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SN74HC27D
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SN74HC27D Description
SN74HC27D Description
The SN74HC27D from Texas Instruments is a high-performance triple 3-input NOR gate integrated circuit housed in a 14-pin SOIC package. Operating within a 2V to 6V supply voltage range, this logic gate is part of the 74HC series, renowned for its low power consumption and high noise immunity. With a maximum propagation delay of 15ns at 6V and 50pF load, it ensures fast signal processing, making it suitable for high-speed digital applications. The device features 3 independent NOR gates, each accepting 3 inputs, and delivers a balanced output current of 5.2mA (both high and low). Its quiescent current is exceptionally low (2µA max), enhancing energy efficiency.
SN74HC27D Features
- Logic Type: Triple 3-input NOR gate with high-speed operation (15ns propagation delay).
- Wide Voltage Range: Supports 2V to 6V, compatible with TTL and CMOS logic levels.
- Low Power Consumption: Quiescent current of just 2µA ensures minimal standby power draw.
- Robust Output Drive: Capable of sourcing/sinking 5.2mA, enabling direct interfacing with LEDs or small relays.
- High Noise Immunity: Improved signal integrity in electrically noisy environments.
- Surface-Mount Design: 14-SOIC package for compact PCB layouts.
- Environmental Compliance: RoHS3 compliant and REACH unaffected, meeting global environmental standards.
SN74HC27D Applications
- Digital Logic Systems: Used in combinational logic circuits, arithmetic units, and multiplexers.
- Signal Conditioning: Ideal for noise filtering and signal inversion in communication systems.
- Industrial Control: Suitable for PLC interfaces and safety interlocks due to reliable NOR logic.
- Embedded Systems: Efficiently integrates into microcontroller-based designs for logic-level conversion.
- Automotive Electronics: Operates reliably in 12V/24V systems with proper voltage regulation.
Conclusion of SN74HC27D
The SN74HC27D stands out as a versatile, low-power NOR gate IC with high-speed performance and robust output drive. Its wide voltage compatibility and minimal power consumption make it ideal for battery-operated devices, industrial automation, and high-frequency digital circuits. Compared to similar models, its balanced current drive and enhanced noise immunity ensure reliable operation in demanding environments. For engineers seeking a cost-effective, high-performance logic solution, the SN74HC27D is an excellent choice.
FAQ
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.87120 | $0.87 |
| 10+ | $0.62568 | $6.26 |
| 50+ | $0.52730 | $26.36 |
| 100+ | $0.49702 | $49.70 |
| 337+ | $0.78320 | $263.94 |



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