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USER MANUAL SN74HCT273N TEXAS INSTRUMENTS

SNx4HCT273 Octal D-Type Flip-Flops With Clear

1 Features

  • Operating voltage range of 4.5 V to 5.5 V
    • Outputs can drive up to 10 LSTTL loads
  • Low power consumption, 80 μA maximum I cc
    • Typical t _pd = 12 ns
  • ±4 mA output drive at 5 V
  • Low input current of 1 A maximum
  • Inputs are TTL-voltage compatible
  • Contain eight D-type flip-flops
  • Direct clear input

2 Applications

• Buffer or storage registers
- Shift registers
- Pattern generators

3 Description

These devices are positive-edge-triggered D-type flip-flops with a common enable input. The 'HCT273 devices are similar to the 'HCT377 devices, but feature a common clear enable (CLR) input instead of a latched clock.

Device Information ^(1)

PART NUMBERPACKAGE BODY SIZE (NOM)
SN74HCT273DW SOC (20) 12.80 mm × 7.50 mm
SN74HCT273DB SSOP(20) 7.20 mm × 5.30 mm
SN74HCT273N PDIP(20) 25.40 mm × 6.35 mm
SN74HCT273NS SO(20) 15.00 mm × 5.30 mm
SN74HCT273PWTSSOP (20)6.50 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at the end of the data sheet.

TEXAS INSTRUMENTS SN74HCT273N - Description - 1
Logic Diagram, Each Flip Flop (positive logic)

Table of Contents

1 Features....1
2 Applications....1
3 Description....1
4 Revision History....2
5 Pin Configuration and Functions....3
6 Specifications....4
6.1 Absolute Maximum Ratings.... 4
6.2 Recommended Operating Conditions ^(1) 4
6.3 Thermal Information....4
6.4 Electrical Characteristics....5
6.5 Timing Requirements....5
6.6 Switching Characteristics....6
6.7 Switching Characteristics....6
6.8 Operating Characteristics.... 6
7 Parameter Measurement Information.... 7

8 Detailed Description....8
8.1 Overview....8
8.2 Functional Block Diagram.... 8
8.3 Device Functional Modes......8
9 Power Supply Recommendations....9
10 Layout....9
10.1 Layout Guidelines....9
11 Device and Documentation Support....10
11.1 Receiving Notification of Documentation Updates.. 10
11.2 Support Resources.... 10
11.3 Trademarks.... 10
11.4 Electrostatic Discharge Caution.... 10
11.5 Glossary.... 10
12 Mechanical, Packaging, and Orderable Information....10

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision E (August 2003) to Revision F (February 2022) Page

- Updated the numbering, formatting, tables, figures, and cross-references throughout the document to reflect modern data sheet standards....1

5 Pin Configuration and Functions
TEXAS INSTRUMENTS SN74HCT273N - Changes from Revision E (August 2003) to Revision F (February 2022) Page - 1

text_image CLR 1 ○ 1Q 2 1D 3 2D 4 2Q 5 3Q 6 3D 7 3Q 8 3D 9 GND 10 20 Vcc 19 8Q 18 8D 17 7D 16 7Q 15 6Q 14 6D 13 5D 12 5Q 11 CLK

DB, DW, N, NS, or PW package 20-Pin SSOP, SOIC, PDIP, SO, or TSSOP (Top View)

TEXAS INSTRUMENTS SN74HCT273N - Changes from Revision E (August 2003) to Revision F (February 2022) Page - 2

text_image 1D 1Q CLR Vcc 8Q 2D 3 2 1 20 19 8D 2Q 4 5 17 7D 3Q 6 16 7Q 3D 7 15 6Q 4D 8 14 6D 4Q 9 10 11 12 13 GND CLK 5Q 5D

FK package 20-Pin LCCC (Top View)

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) ^(1)

MIN MAX UNIT
V_CC Supply voltage range -0.5 7 V
I_IK Input clamp current(2) V_I < 0 or V_I > V_CC ±20mA
I_OK Output clamp current(2) V_O < 0 or V_O > V_CC ±20mA
I_O Continuous output current Vo = 0 to V_CC ±25mA
Continuous current through V_CC or GND ±50 mA
T_J Junction temperature 150 °C
T_stg Storage temperature range -65 150 °C

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.

SN54HCT273(2)SN74HCT273UNIT
MIN NOM MAX MINNOMMAX
V_CC Supply voltage4.555.54.555.5V
V_IH High-level input voltage V_CC=4.5V to 5.5V 22V
V_IL Low-level input voltage V_CC=4.5V to 5.5V 0.80.8V
V_I Input voltage0 V_CC 0 V_CC V
V_O Output voltage0 V_CC 0 V_CC V
t/ v Input transition rise or fall rate500500ns/V
T_A Operating free-air temperature-55125-4085°C

(1) All unused inputs of the device must be held at V CC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

(2) Product Preview

6.3 Thermal Information

THERMAL METRICDW (SOIC)DB (SSOP)N (PDIP)NS (SO)PW (TSSOP)UNIT
20 PINS20 PINS20 PINS20 PINS20 PINS
R_ JA Junction-to-ambient thermal resistance(1)5870696083°C/W

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC package thermal metrics application report.

6.4 Electrical Characteristics

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETERTEST CONDITIONS Vcc T_A=25°C SN54HCT273 (1) SN74HCT273UNIT
MIN TYP MAX MIN MAX MIN MAX
V_OH V_I=V_IH or V_IL I_OH=-20 μA 4.5 V 4.4 4.499 4.4 4.4V
I_OH=-4 mA 4.5 V 3.98 4.30 3.7 3.84
V_OL V_I=V_IH or V_IL I_OL=20 μA 4.5 V0.0010.10.10.1V
I_OL=4 mA 4.5 V0.170.260.40.33
I_I V_I=V_CC or 0 5.5 V±0.1±100±1000±1000nA
I_CC V_I=V_CC or 0, I O=0 5.5 V8160 80 μA
I_CC^(2) One input at 0.5 V or 2.4 V,Other inputs at 0 or V_CC 5.5 V1.42.432.9mA
C_i 4.5 V to 5 V3101010 pF

(1) Product Preview
(2) This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or V_CC .

6.5 Timing Requirements

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETER V_cc T_A=25°C SN54HCT273(1)SN74HCT273UNIT
MINMAXMINMAXMINMAX
f_clock Clock frequency4.5 V251620MHz
5.5 V281923
t_w Pulse durationCLK high or low4.5 V203025ns
5.5 V182522
low4.5 V162420
5.5 V142017
t_su Setup time before CLK↑Data4.5 V203025ns
5.5 V172521
inactive4.5 V203025
5.5 V172521
t_h Hold time, data after CLK↑4.5 V000ns
5.5 V000

(1) Product Preview

6.6 Switching Characteristics

over recommended operating free-air temperature range, V_CC = 5 V ± 0.5 V (unless otherwise noted) (see Parameter Measurement Information)

PARAMETERFROM(INPUT)TO(OUTPUT) V_cc SN54HCT273(1)UNITT
A=25°C MIN MAX
MIN TYP MAX
f_max 4.5 V 25 31 16MHz
5.5 V 28 37 19
t_pd CLR Any4.5 V 15 34 50ns
5.5 V 12 29 42
t_PHL CLR Any4.5 V 17 15 50ns
5.5 V 15 34 42
t_t Any4.5 V 8 18 22ns
5.5 V 7 19 21

(1) Product Preview

6.7 Switching Characteristics

over recommended operating free-air temperature range, V_CC = 5 V ± 0.5 V (unless otherwise noted) (see Parameter Measurement Information)

PARAMETERFROM(INPUT)TO(OUTPUT) V_cc SN74HCT273UNITT
A=25°C MIN MAX
MIN TYP MAX
f_max 4.5 V 25 31 20MHz
5.5 V 28 37 23
t_pd CLR Any4.5 V 15 34 42ns
5.5 V 12 29 36
t_PHL CLR Any4.5 V 17 34 42ns
5.5 V 15 29 36
t_t Any4.5 V 8 15 19ns
5.5 V 7 14 17

6.8 Operating Characteristics

$$ V _ {C C} = 5 \mathrm{V}, T _ {\mathrm{A}} = 2 5 ^ {\circ} \mathrm{C} $$

PARAMETER TEST CONDITIONS TYP UNIT
C_pd Power dissipation capacitanceNo load30pF

7 Parameter Measurement Information

Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z_O = 50 , t_t < 6 ns.

For clock inputs, f_max is measured when the input duty cycle is 50%.

The outputs are measured one at a time with one input transition per measurement.

TEXAS INSTRUMENTS SN74HCT273N - Parameter Measurement Information - 1

text_image Test Point1 From Output Under Test C_L^(1)

(1) C_L includes probe and test-fixture capacitance.

Figure 7-1. Load Circuit for Push-Pull Outputs
TEXAS INSTRUMENTS SN74HCT273N - Parameter Measurement Information - 2

text_image Input 1.3V 1.3V tw 3V 0 V

Figure 7-2. Voltage Waveforms, TTL-Compatible CMOS Inputs Pulse Duration

TEXAS INSTRUMENTS SN74HCT273N - Parameter Measurement Information - 3

text_image Clock Input 1.3V 3V 0 V tsu tn Data Input 1.3V 1.3V 3V 0 V

Figure 7-3. Voltage Waveforms, TTL-Compatible CMOS Inputs Setup and Hold Times

TEXAS INSTRUMENTS SN74HCT273N - Parameter Measurement Information - 4

other | Waveform | Input (V) | Output Waveform 1 (%) | Output Waveform 2 (%) | |-----------|-----------|------------------------|------------------------| | 0 | 0 | - | - | | 1.3 | 1.3 | 50% | 50% | | 3 | 3 | - | - |

(1) The greater between t_PLH and t_PHL is the same as t_pd .

Figure 7-4. Voltage Waveforms, Propagation Delays for TTL-Compatible Inputs

8 Detailed Description

8.1 Overview

These devices are positive-edge-triggered D-type flip-flops with a common enable input. The 'HCT273 devices are similar to the 'HCT377 devices, but feature a common clear enable (CLR) input instead of a latched clock.

Information at the data (D) inputs meeting the setup time requirements is transferred to the Q outputs on the positive-going edge of the clock (CLK) pulse. Clock triggering occurs at a particular voltage level and is not directly related to the positive-going pulse. When CLK is at either the high or low level, the D input has no effect at the output. The circuits are designed to prevent false clocking by transitions at CLR.

8.2 Functional Block Diagram

TEXAS INSTRUMENTS SN74HCT273N - Functional Block Diagram - 1

flowchart
graph LR
    CLK["CLK 11"] --> A["1D C1 R"]
    CLR["CLR 1"] --> B["1D C1 R"]
    A --> C["1D C1 R"]
    B --> D["1D C1 R"]
    C --> E["1D C1 R"]
    D --> F["1D C1 R"]
    E --> G["1D C1 R"]
    F --> H["1D C1 R"]
    G --> I["1D C1 R"]
    H --> J["1D C1 R"]
    I --> K["1D C1 R"]
    J --> L["1D C1 R"]
    K --> M["8D 18"]
    L --> N["8D 18"]
    M --> O["8D 18"]
    N --> P["8D 18"]
    O --> Q["8D 18"]
    P --> R["8D 18"]
    Q --> S["8Q 19"]
    R --> T["8Q 19"]
    S --> U["8Q 19"]

Figure 8-1. Logic Diagram (positive logic)

TEXAS INSTRUMENTS SN74HCT273N - Functional Block Diagram - 2

flowchart
graph TD
    D --> TG1["TG"]
    TG1 --> C1["C"]
    C1 --> TG2["AND"]
    TG2 --> C2["C"]
    C2 --> TG3["TG"]
    TG3 --> C3["C"]
    C3 --> TG4["AND"]
    TG4 --> C4["C"]
    C4 --> TG5["TG"]
    TG5 --> C5["C"]
    C5 --> TG6["AND"]
    TG6 --> C6["C"]
    C6 --> TG7["TG"]
    TG7 --> C7["C"]
    C7 --> TG8["AND"]
    TG8 --> C8["C"]
    C8 --> TG9["TG"]
    TG9 --> C9["C"]
    C9 --> TG10["AND"]
    TG10 --> Q
    CLK(I) --> INV1["NOT"]
    INV1 --> INV2["NOT"]
    INV2 --> INV3["NOT"]
    INV3 --> INV4["NOT"]
    INV4 --> INV5["NOT"]
    INV5 --> INV6["NOT"]
    INV6 --> INV7["NOT"]
    INV7 --> INV8["NOT"]
    INV8 --> INV9["NOT"]
    INV9 --> INV10["NOT"]

Figure 8-2. Logic Diagram, each flip-flop (potitive logic)

8.3 Device Functional Modes

Table 8-1. Function Table (Each Flip-Flop)

INPUTSOUTPUTQ
CLR CLK D
LXXL
H↑HH
H↑LL
HLXQ0

9 Power Supply Recommendations

The power supply can be any voltage between the minimum and maximum supply voltage rating located in the Recommended Operating Conditions. Each V_CC terminal should have a good bypass capacitor to prevent power disturbance. A 0.1- F capacitor is recommended for this device. It is acceptable to parallel multiple bypass caps to reject different frequencies of noise. The 0.1- F and 1- F capacitors are commonly used in parallel. The bypass capacitor should be installed as close to the power terminal as possible for best results.

10 Layout

10.1 Layout Guidelines

When using multiple-input and multiple-channel logic devices inputs must not ever be left floating. In many cases, functions or parts of functions of digital logic devices are unused; for example, when only two inputs of a triple-input AND gate are used or only 3 of the 4 buffer gates are used. Such unused input pins must not be left unconnected because the undefined voltages at the outside connections result in undefined operational states. All unused inputs of digital logic devices must be connected to a logic high or logic low voltage, as defined by the input voltage specifications, to prevent them from floating. The logic level that must be applied to any particular unused input depends on the function of the device. Generally, the inputs are tied to GND or V CC, whichever makes more sense for the logic function or is more convenient.

11 Device and Documentation Support

TI offers an extensive line of development tools. Tools and software to evaluate the performance of the device, generate code, and develop solutions are listed below.

11.1 Receiving Notification of Documentation Updates

To receive notification of documentation updates, navigate to the device product folder on ti.com. Click on Subscribe to updates to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document.

11.2 Support Resources

TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight from the experts. Search existing answers or ask your own question to get the quick design help you need.

Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use.

11.3 Trademarks

TI E2E ^TM is a trademark of Texas Instruments.

All trademarks are the property of their respective owners.

11.4 Electrostatic Discharge Caution

TEXAS INSTRUMENTS SN74HCT273N - Electrostatic Discharge Caution - 1

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

11.5 Glossary

TI Glossary This glossary lists and explains terms, acronyms, and definitions.

12 Mechanical, Packaging, and Orderable Information

The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation.

PACKAGING INFORMATION

Orderable Device Status(1)Package TypePackage DrawingPinsPackage QtyEco Plan(2)Lead finish/ Ball material(6)MSL Peak Temp(3)Op Temp (°C)Device Marking(4-5)Samples
SN74HCT273DBR ACTIVE SSOP DB 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HT273Samples
SN74HCT273DWACTIVESOICDW2025RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HCT273Samples
SN74HCT273DWE4ACTIVESOICDW2025RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HCT273Samples
SN74HCT273DWG4ACTIVESOICDW2025RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HCT273Samples
SN74HCT273DWRACTIVESOICDW202000RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HCT273Samples
SN74HCT273DWRG4ACTIVESOICDW202000RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HCT273Samples
SN74HCT273NACTIVEPDIPN2020RoHS & GreenNIPDAUN / A for Pkg Type-40 to 85SN74HCT273NSamples
SN74HCT273NSRACTIVESONS202000RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HCT273Samples
SN74HCT273PWACTIVETSSOPPW2070RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HT273Samples
SN74HCT273PWE4ACTIVETSSOPPW2070RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HT273Samples
SN74HCT273PWRACTIVETSSOPPW202000RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HT273Samples
SN74HCT273PWTACTIVETSSOPPW20250RoHS & GreenNIPDAULevel-1-260C-UNLIM-40 to 85HT273Samples

(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement.

(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "\~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two lines if the finish value exceeds the maximum column width.

Important Information and Disclaimer: The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

TAPE AND REEL INFORMATION
TEXAS INSTRUMENTS SN74HCT273N - Mechanical, Packaging, and Orderable Information - 1

*All dimensions are nominal

Device PackageTypePackage DrawingPinsSPQ ReelDiameter (mm)Reel Width W1 (mm)A0 (mm)B0 (mm)K0 (mm)P1 (mm)W (mm)Pin1 Quadrant
SN74HCT273DBR SSOP DB 202000 330.016.48.2 7.5 2.512.0 16.0Q1
SN74HCT273DWR SCIC DW 202000 330.024.410.9 13.32.7 12.0 24.0Q1
SN74HCT273NSR SONS 20 2000330.0 24.48.413.0 2.52.0 24.0Q1
SN74HCT273PWR TSSOP PW 202000 330.0164 6.95 7.01.4 8.0 16.0Q1
SN74HCT273PWT TSSOP PW20250 330.0 16.46.95 7.1 1.68.0 16.0Q1

TEXAS INSTRUMENTS SN74HCT273N - Mechanical, Packaging, and Orderable Information - 2

text_image TAPE AND REEL BOX DIMENSIONS W L

*All dimensions are nominal

DevicePackage TypePackage DrawingPinsSPQLength (mm)Width (mm)Height (mm)
SN74HCT273DBR SSOPDB 20 2000 853.0449.0 35.0
SN74HCT273DWR SOC DW 20 2000 367.0367.0 45.0
SN74HCT273NSR SONS 20 2000 367.0367.0 45.0
SN74HCT273PWRTSSOPPW202000853.0449.035.0
SN74HCT273PWTTSSOPPW20250853.0449.035.0

TUBE

TEXAS INSTRUMENTS SN74HCT273N - TUBE - 1

text_image T - Tube height L - Tube length W - Tube width B - Alignment groove width

*All dimensions are nominal

DevicePackage NamePackage TypePinsSPQL (mm)W (mm)T (μm)B (mm)
SN74HCT273DW DWSOIC 20 25 507 12.83 5080 6.6
SN74HCT273DWE4 DWSOIC 20 25 507 12.83 5080 6.6
SN74HCT273DWG4 DWSOIC 20 25 507 12.83 5080 6.6
SN74HCT273NNPDIP202050613.97112304.32
SN74HCT273PW PWTSSOP 20 70 53010.2 36003.5
SN74HCT273PWE4PWTSSOP207053010.236003.5

SMALL OUTLINE PACKAGE

TEXAS INSTRUMENTS SN74HCT273N - TUBE - 2

text_image A 8.2 7.4 TYP PIN 1 INDEX AREA 1 20 18X 0.65 7.5 6.9 NOTE 3 2X 5.85 10 11 20X 0.38 0.22 B 5.6 5.0 NOTE 4 ⊕ 0.1@ A B

TEXAS INSTRUMENTS SN74HCT273N - TUBE - 3

text_image C 0.1 C SEATING PLANE

TEXAS INSTRUMENTS SN74HCT273N - TUBE - 4

text_image SEE DETAIL A (0.15) TYP

TEXAS INSTRUMENTS SN74HCT273N - TUBE - 5

text_image GAGE PLANE 0.25 0° -8° 0.95 0.55 2 MAX 0.05 MIN

DETAIL A TYPICAL

4214851/B 08/2019

NOTES:

  1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M.
  2. This drawing is subject to change without notice.
  3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side.
  4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side.
  5. Reference JEDEC registration MO-150.

SMALL OUTLINE PACKAGE

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 1

text_image 20X (1.85) SYMM (0.45) 1 20X 18X (0.65) 10 (7) R0.05 TYP 20 SYMM 11

LAND PATTERN EXAMPLE
EXPOSED METAL SHOWN SCALE: 10X

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 2

text_image SOLDER MASK OPENING METAL EXPOSED METAL 0.07 MAX ALL AROUND

NON-SOLDER MASK DEFINED (PREFERRED)

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 3

text_image METAL UNDER SOLDER MASK SOLDER MASK OPENING EXPOSED METAL 0.07 MIN ALL AROUND

SOLDER MASK DETAILS

4214851/B 08/2019

NOTES: (continued)

  1. Publication IPC-7351 may have alternate designs.
  2. Solder mask tolerances between and around signal pads can vary based on board fabrication site.

SMALL OUTLINE PACKAGE

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 4

text_image 20X (1.85) 1 20X (0.45) SYMM (7) 18X (0.65) 10 (R0.05) TYP 20 SYMM 11

SOLDER PASTE EXAMPLE
BASED ON 0.125 mm THICK STENCIL
SCALE: 10X

4214851/B 08/2019

NOTES: (continued)

  1. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations.
  2. Board assembly site may have different recommendations for stencil design.

MECHANICAL DATA

NS (R-PDSO-G\*\*)

PLASTIC SMALL-OUTLINE PACKAGE

14-PINS SHOWN

TEXAS INSTRUMENTS SN74HCT273N - PLASTIC SMALL-OUTLINE PACKAGE - 1

text_image 1,27 14 0,51 0,35 Ø 0,25① 8 5,60 5,00 8,20 7,40 1 7 A

TEXAS INSTRUMENTS SN74HCT273N - PLASTIC SMALL-OUTLINE PACKAGE - 2

text_image 0,15 NOM Gage Plane 0,25 0°-10° 1,05 0,55

TEXAS INSTRUMENTS SN74HCT273N - PLASTIC SMALL-OUTLINE PACKAGE - 3

text_image 2,00 MAX 0,15 0,05

TEXAS INSTRUMENTS SN74HCT273N - PLASTIC SMALL-OUTLINE PACKAGE - 4

text_image Seating Plane 0.10
DIM\PINS **14162024
A MAX10,5010,5012,9015,30
A MIN9,909,9012,3014,70

4040062/C 03/03

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion, not to exceed 0,15.

N (R-PDIP-T\*\*)

16 PINS SHOWN

PLASTIC DUAL-IN-LINE PACKAGE

TEXAS INSTRUMENTS SN74HCT273N - PLASTIC DUAL-IN-LINE PACKAGE - 1

text_image A 16 9 0.260 (6,60) 0.240 (6,10) 1 8 0.070 (1,78) 0.045 (1,14)

C

DIM\PINS **14161820
A MAX0.775(19,69)0.775(19,69)0.920(23,37)1.060(26,92)
A MIN0.745(18,92)0.745(18,92)0.850(21,59)0.940(23,88)
MS-001VARIATIONAABBACAD

TEXAS INSTRUMENTS SN74HCT273N - PLASTIC DUAL-IN-LINE PACKAGE - 2

text_image 0.045 (1,14) 0.030 (0,76) D 0.020 (0,51) MIN 0.200 (5,08) MAX Seating Plane 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) ⊕ 0.010 (0,25) M 14/18 Pin Only 20 Pin vendor opt

TEXAS INSTRUMENTS SN74HCT273N - PLASTIC DUAL-IN-LINE PACKAGE - 3

text_image 0.325 (8,26) 0.300 (7,62) 0.015 (0,38) Gauge Plane 0.010 (0,25) NOM 0.430 (10,92) MAX

4040049/E 12/2002

NOTES: A. All linear dimensions are in inches (millimeters).

B. This drawing is subject to change without notice.

C Falls within JEDEC MS-001, except 18 and 20 pin minimum body length (Dim A).

The 20 pin end lead shoulder width is a vendor option, either half or full width.

SOIC

TEXAS INSTRUMENTS SN74HCT273N - PLASTIC DUAL-IN-LINE PACKAGE - 4

4220724/A 05/2016

NOTES:

  1. All linear dimensions are in millimeters. Dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M.
  2. This drawing is subject to change without notice.
  3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side.
  4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.43 mm per side.
  5. Reference JEDEC registration MS-013.

SOIC

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 1

text_image 20X (2) 1 20X (0.6) 18X (1.27) (R0.05) TYP 10 SYMM 20 SYMM 11 (9.3)

LAND PATTERN EXAMPLE SCALE:6X

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 2

text_image SOLDER MASK OPENING METAL 0.07 MAX ALL AROUND

NON SOLDER MASK DEFINED

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 3

text_image METAL UNDER SOLDER MASK SOLDER MASK OPENING 0.07 MIN ALL AROUND

SOLDER MASK DEFINED
SOLDER MASK DETAILS

4220724/A 05/2016

NOTES: (continued)

  1. Publication IPC-7351 may have alternate designs.
  2. Solder mask tolerances between and around signal pads can vary based on board fabrication site.

SOIC

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 4

text_image 20X (2) 1 20X (0.6) 18X (1.27) SYMM 20 SYMM 10 (9.3) 11

SOLDER PASTE EXAMPLE
BASED ON 0.125 mm THICK STENCIL
SCALE:6X

4220724/A 05/2016

NOTES: (continued)

  1. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations.
  2. Board assembly site may have different recommendations for stencil design.

SMALL OUTLINE PACKAGE

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 5

text_image A 6.6 TYP 6.2 PIN 1 INDEX AREA 1 20 18X 0.65 6.6 6.4 NOTE 3 2X 5.85 10 11 20X 0.30 0.19 B 4.5 4.3 NOTE 4 ⊕ 0.1@ A B

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 6

text_image C SEATING PLANE 0.1 C 1.2 MAX

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 7

text_image SEE DETAIL A (0.15) TYP

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 8

text_image GAGE PLANE 0.25 0.15 0.05 0°-8° 0.75 0.50 DETAIL A TYPICAL

4220206/A 02/2017

NOTES:

  1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M.
  2. This drawing is subject to change without notice.
  3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side.
  4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side.
  5. Reference JEDEC registration MO-153.

SMALL OUTLINE PACKAGE

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 1

text_image 20X (1.5) 1 20X (0.45) 18X (0.65) 10 (5.8) SYMM (R0.05) TYP 20 SYMM 11

LAND PATTERN EXAMPLE
EXPOSED METAL SHOWN SCALE: 10X

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 2

text_image SOLDER MASK OPENING METAL EXPOSED METAL 0.05 MAX ALL AROUND

NON-SOLDER MASK DEFINED (PREFERRED)

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 3

text_image METAL UNDER SOLDER MASK SOLDER MASK OPENING EXPOSED METAL 0.05 MIN ALL AROUND

SOLDER MASK DETAILS

4220206/A 02/2017

NOTES: (continued)

  1. Publication IPC-7351 may have alternate designs.
  2. Solder mask tolerances between and around signal pads can vary based on board fabrication site.

SMALL OUTLINE PACKAGE

TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 4

text_image 20X (1.5) 1 20X (0.45) SYMM (R0.05) TYP 20 18X (0.65) SYMM 10 (5.8) 11

SOLDER PASTE EXAMPLE
BASED ON 0.125 mm THICK STENCIL
SCALE: 10X

4220206/A 02/2017

NOTES: (continued)

  1. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations.
  2. Board assembly site may have different recommendations for stencil design.

PW (R-PDSO-G20)

Example Board Layout
TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 5

text_image 18x0,65 5,6 Example Non Soldermask Defined Pad Example Solder Mask Opening (See Note E) 0,3 1,6 0,07 Pad Geometry All Around

Based on a stencil thickness of .127mm (.005inch).
TEXAS INSTRUMENTS SN74HCT273N - NOTES: - 6

text_image 20x0,25 1,55 5,6 18x0,65

4211284-5/G 08/15

NOTES:

A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Publication IPC-7351 is recommended for alternate design.
D. Laser cutting apertures with trapezoidal walls and also rounding corners will offer better paste release. Customers should contact their board assembly site for stencil design recommendations. Refer to IPC-7525 for other stencil recommendations.
E. Customers should contact their board fabrication site for solder mask tolerances between and around signal pads.

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Brand : TEXAS INSTRUMENTS

Model : SN74HCT273N

Category : Electronic component