The MC74HC27N is a high-speed silicon-gate CMOS device containing three independent 3-input NOR gates. It achieves speeds comparable to equivalent bipolar Schottky TTL circuits while retaining the low power consumption of CMOS. The device operates across a wide voltage range, making it suitable for various applications. The output structures are designed to provide symmetrical drive characteristics, ensuring balanced performance for both HIGH-to-LOW and LOW-to-HIGH transitions.

Applications

• Logic gates
• Digital signal processing
• Control circuits
• Data selection
• Waveform generation

Features

• High Speed: tPD = 11 ns (typ) at VCC = 5V
• Low Power Dissipation: ICC = 1 μA (max) at TA = 25°C
• High Noise Immunity: VNIH = VNIL = 30 % VCC
• Output Drive Capability: 10 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2 V to 6 V
• Low Input Current: 1 μA max

Benefits

• Faster processing speeds improve system responsiveness.
• Reduced power consumption extends battery life in portable devices.
• Improved noise immunity minimizes the risk of errors in noisy environments.
• Seamless integration with various logic families simplifies circuit design.
• Flexible operating voltage allows for compatibility with diverse power supply configurations.

Additional Details

The MC74HC27N is packaged in a 14-pin DIP (Dual In-line Package). It is designed to operate reliably over a wide temperature range, typically from -55°C to +125°C. Each gate within the package operates independently. The outputs can drive up to 10 LSTTL loads, ensuring compatibility with a wide range of downstream devices. The input current is very low, contributing to the overall low power consumption of the device. The symmetrical output drive characteristics contribute to signal integrity and predictable timing behavior.