8-bit D flip-flop
This document is a technical datasheet for the CD54HC377, CD74HC377, CD54HCT377, and CD74HCT377 integrated circuits. These are high-speed CMOS logic octal D-type flip-flops featuring a buffered common clock (CP) shared by all eight flip-flops. The devices load data simultaneously on the positive edge of the clock when the Data Enable input is Low.
| Propagation Delay (Typical) | 14ns (HC Types), 16 ns (HCT Types) |
|---|---|
| Operating Temperature Range | -55°C to 125°C |
| Supply Voltage (HC Types) | 2V to 6V |
| Supply Voltage (HCT Types) | 4.5V to 5.5V |
| Fanout (Over Temperature Range) | 10 LSTTL Loads |
All flip-flops are loaded simultaneously on the positive edge of the clock when the Data Enable is Low.
The typical propagation delay at Vcc = 5V and Ta = 25°C is 14ns.
Yes, HCT types have direct LSTTL input logic compatibility with a maximum Vit of 0.8V.