The MC74HC374A is an octal 3-state non-inverting D flip-flop manufactured using high-performance silicon-gate CMOS technology. It has the same pinout as the LS374 and its inputs are compatible with standard CMOS outputs. Data meeting the setup time is clocked to the outputs with the rising edge of the clock. The Output Enable input does not affect the states of the flip-flops, but when Output Enable is high, the outputs are forced to the high-impedance state. The HC374A is identical in function to the HC574A which has the input pins on the opposite side of the package from the output. This device is similar in function to the HC534A which has inverting outputs.
The MC74HC374A is an octal 3‑state non‑inverting D‑flip‑flop with high‑performance silicon‑gate CMOS technology. It offers compatible input levels for CMOS, NMOS, and TTL families and features a high‑impedance output enable.
The document lists detailed electrical parameters, timing requirements, ordering information, and mechanical drawings for PDIP‑20, SOIC‑20, TSSOP‑20 and other package variants. It also includes maximum ratings, recommended operating conditions, and test circuit diagrams.
| Output Drive Capability | 15 LSTTL Loads |
|---|---|
| Operating Voltage Range | 2.0 to 6.0 V |
| Low Input Current | 1.0 µA |
| Supply Voltage (Voc) Range | -0.5 to +7.0 V |
| Maximum Input Current per Pin | +20 mA |
| Maximum Output Current per Pin | +35 mA |
| Power Dissipation (Plastic DIP) | 750 mW |
| Package Options | PDIP‑20, SOIC‑20, TSSOP‑20, SOEIAJ‑20 |
The device operates from 2.0 V up to 6.0 V.
It can drive up to 15 LSTTL loads.
The part is offered in PDIP‑20, SOIC‑20, TSSOP‑20 and SOEIAJ‑20 packages.