74AC174/74ACT174 is a high-speed hex D-type flip-flop that can be used as a 6-bit edge-triggered storage register. The information is transferred to storage during the LOW-to-HIGH clock transition from the D inputs. The device has a Master Reset to simultaneously clear all flip-flops.
The Fairchild 74AC174 and 74ACT174 are high‑speed hex D‑type flip‑flops with a common master reset. Data on the D inputs is transferred to the outputs on a low‑to‑high clock transition, and all outputs can be cleared simultaneously by the reset input.
The document provides ordering codes for various packages, pin descriptions, functional and truth‑table information, absolute maximum ratings, DC and AC electrical characteristics, timing parameters, and detailed mechanical dimensions for SOIC, SOP, TSSOP and PDIP packages.
| Output source/sink current | 24 mA |
|---|---|
| Input compatibility (ACT174) | TTL‑compatible |
| Recommended operating supply voltage | 2.0 V to 6.0 V |
| Maximum clock frequency (AC version) | up to 100 MHz |
| Setup time (high or low) | 33 ns (typical) |
Each output can source or sink up to 24 mA.
The recommended operating voltage is 2.0 V to 6.0 V.
Yes, the ACT174 version has TTL‑compatible inputs.
The device can operate at clock frequencies up to about 100 MHz.