ON Semiconductor MC74HCT74ADG: Dual D-Type Positive Edge-Triggered Flip-Flop

The MC74HCT74ADG from ON Semiconductor is a high-performance, dual D-type positive edge-triggered flip-flop integrated circuit that is designed to operate as a versatile memory element in a wide array of digital applications. This IC is part of the high-speed CMOS HCT family and is fabricated with silicon gate CMOS technology which ensures that it has the high noise immunity and low power consumption characteristic of CMOS integrated circuits, along with speeds similar to LSTTL (Low-Power Schottky Transistor-Transistor Logic).

This flip-flop device features two independent D-type flip-flops with individual clear and preset inputs for each flip-flop. The logic level present at the 'D' input is transferred to the Q output during the positive-going transition of the clock pulse. The clear and preset inputs are asynchronous to the clock; when asserted, they override the clock and data inputs, allowing the flip-flops to be immediately set or cleared on demand.

Key specifications of the MC74HCT74ADG include:

• Supply Voltage Range: 4.5V to 5.5V
• Output Drive Capability: 10 LSTTL Loads
• High Noise Immunity Characteristic of CMOS Devices
• Low Power Consumption: 20 µA Max ICC
• Low Input Current of 1 µA Max
• Functionally Compatible with the LS74
• Operating Temperature Range: -55°C to +125°C

The device is packaged in a SOIC-14 (Small Outline Integrated Circuit) package, making it suitable for space-constrained applications. Its compatibility with LSTTL outputs, along with the ability to drive 10 LSTTL loads, allows for easy integration into mixed-technology systems.

Applications for the MC74HCT74ADG are diverse and include memory registers, counters, and toggle circuits. Its robust design also makes it suitable for implementing logic functions such as sequence generation and waveform shaping. With its precise edge-triggering and reliable clear and preset functions, this IC is an excellent choice for designers looking for a dependable flip-flop component in their digital logic systems.

ON Semiconductor's commitment to quality ensures that the MC74HCT74ADG meets the stringent requirements for high-performance digital circuitry, making it a go-to choice for engineers and designers alike.