CD74HCT299M - Electronic component TEXAS INSTRUMENTS - Free user manual and instructions
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| Product Type | 8-Bit Universal Shift/Storage Register with 3-State Outputs |
| Brand | Texas Instruments |
| Model | CD74HCT299M |
| Logic Family | HCT (High-Speed CMOS, TTL-Compatible) |
| Supply Voltage (VCC) | 4.5V to 5.5V |
| Input Logic Levels | TTL Compatible (VIL ≤ 0.8V, VIH ≥ 2.0V) |
| Output Drive Capability | ±4 mA at 5V |
| Operating Temperature Range | -55°C to +125°C |
| Package Type | SOIC-20 (Small Outline Integrated Circuit) |
| Package Dimensions (Approx.) | 12.8 mm × 7.5 mm × 2.65 mm |
| Weight (Approx.) | 0.5 g |
| Function | 8-bit bidirectional universal shift register with parallel load, hold, shift left/right, and 3-state outputs |
| Fan-Out (HCT Family) | 10 LSTTL loads |
| ESD Protection | 2 kV HBM (Human Body Model) |
| Mounting Type | Surface Mount |
| RoHS Compliant | Yes |
| Maintenance & Cleaning | Not required; avoid contamination as it may affect performance. |
| Safety Precautions | ESD sensitive – use proper grounding when handling. |
| Spare Parts & Repairability | Not applicable; the component is not user-serviceable. |
| General Information | Standard high-speed CMOS logic IC for general-purpose shift register applications. |
Frequently Asked Questions - CD74HCT299M TEXAS INSTRUMENTS
What is the operating voltage range of the CD74HCT299M?
The CD74HCT299M operates with a supply voltage (VCC) from 4.5V to 5.5V. It is designed for 5V TTL-compatible systems.
What is the logic family of this IC?
It belongs to the HCT (High-Speed CMOS with TTL-compatible inputs) family. This means it provides the low power of CMOS while being directly compatible with TTL logic levels.
What package does the CD74HCT299M come in?
The device is offered in a SOIC-20 (Small Outline Integrated Circuit) package, which is suitable for surface mount assembly.
What is the function of the CD74HCT299M?
It is an 8-bit universal shift/storage register with 3-state outputs. It can perform parallel load, hold, shift left, and shift right operations.
What is the output drive capability?
The outputs can drive up to ±4 mA at 5V, which is sufficient to drive up to 10 LSTTL loads.
What is the temperature range for this IC?
The operating temperature range is from -55°C to +125°C, making it suitable for industrial and automotive applications.
Is the CD74HCT299M RoHS compliant?
Yes, the CD74HCT299M is RoHS compliant and free from hazardous substances like lead.
How should I handle this IC to avoid damage?
This device is ESD sensitive. Always use grounded workstations and anti-static wrist straps when handling. Store in anti-static packaging.
Can I use this IC in a 3.3V system?
No, the CD74HCT299M is designed for 5V operation. For 3.3V systems, consider the 74LVC or 74AHC families.
What are the 3-state output conditions?
The outputs can be in one of three states: low, high, or high impedance (Z). The high-impedance state is enabled via the output enable (OE) pins, allowing multiple devices to share a bus.
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