The MM74HC74A is a dual D-type flip-flop with preset and clear, manufactured by Fairchild Semiconductor Corporation. It has high noise immunity and low power consumption, and can drive 10 LS-TTL loads.
The MM74HC74A is a dual D‑type flip‑flop with independent preset and clear inputs. It uses advanced silicon‑gate CMOS technology, offers low power consumption, and can drive up to 10 LS‑TTL loads. The device is pin‑compatible with the standard 74LS family and includes protection diodes on all inputs.
The document provides detailed electrical characteristics, absolute maximum ratings, mechanical dimensions for various package types, and ordering information. It also contains a life‑support policy disclaimer stating the part is not authorized for critical life‑support applications.
| Typical propagation delay | 20 ns |
|---|---|
| Power supply range | 2‑6 V |
| Quiescent current (max) | 40 µA |
| Input current (max) | 1 µA |
| Fanout (LS‑TTL loads) | 10 |
The typical propagation delay is 20 ns.
The device operates over a wide supply range of 2 V to 6 V.
It can drive up to 10 LS‑TTL loads.
No, Fairchild does not authorize its use in life‑support systems without explicit written approval.