The 74HC/HCT374 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
This document is a product specification datasheet for the Philips 74HC/HCT374 integrated circuit. It describes an octal D-type flip-flop with positive edge-triggering and 3-state outputs designed for bus-oriented applications. The device is pin-compatible with low power Schottky TTL (LSTTL) and complies with JEDEC standard no. 7A.
The datasheet provides detailed information including a quick reference guide, pin descriptions, functional tables, and AC/DC characteristic parameters for both HC and HCT variants. It specifies operating conditions such as propagation delay, clock frequency, and setup/hold times, along with typical application waveforms.
| Product Type | Octal D-type flip-flop; positive edge-trigger; 3-state |
|---|---|
| Output Capability | Bus driver |
| Logic Category | MSI |
| Maximum Clock Frequency (HC) | 77 MHz |
| Propagation Delay (Typical, HC) | 15 ns |
| Propagation Delay (Typical, HCT) | 13 ns |
When OE is LOW, the contents of the flip-flops are available at the outputs. When OE is HIGH, the outputs go to the high impedance OFF-state.
Yes, the 374 is functionally identical to the 534, but it has non-inverting outputs.
The setup time is 60 ns for the 74HC version and 12 ns for the 74HCT version.