The CD74HC374 is an octal D-type flip-flop with three-state outputs from Harris, which can drive 15 LSTTL loads. The input interface of the trigger has buffer function, the output interface has three-state output enable control, and can output high impedance state on the output pin.
The CD74HC374, CD74HCT374, CD74HC574 and CD74HCT574 are octal D‑type flip‑flops featuring three‑state outputs and the ability to drive up to 15 LSTTL loads. They operate with buffered inputs and provide balanced propagation delay and transition times across a wide temperature range.
The devices are supplied in PDIP and SOIC packages, support supply voltages from 2 V to 6 V (HC) or 4.5 V to 5.5 V (HCT), and are rated for operation from –55 °C to 125 °C. Detailed electrical specifications, switching characteristics, and test circuit waveforms are provided for design reference.
| Typical Propagation Delay (Clock to Q) | 15 ns |
|---|---|
| Operating Temperature Range | -55 °C to 125 °C |
| Clock Pulse Width (typical) | 120 ns |
The typical propagation delay from clock to Q is 15 ns.
They are rated for operation from –55 °C to 125 °C.