74HC174D

74HC 系列触发器和闩锁，NXP74HC 系列 CMOS 逻辑 IC 的一系列 NXP 触发器和闩锁。 74HC 系列使用硅门 CMOS 技术，实现与 LSTTL 系列类似的工作速度，但标准 CMOS 集成电路功耗降低。### 74HC 系列

General description

The 74HC174; 74HCT174 are hex positive edge-triggered D-type flip-flops with individual data inputs Dn and outputs Qn. The common clock CP and master reset MR inputs load and reset all flip-flops simultaneously. The D-input that meets the set-up and hold time requirements on the LOW-to-HIGH clock transition is stored in the flip-flop and appears at the Q output. A LOW on MR causes the flip-flops and outputs to be reset LOW. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

Input levels:

  For 74HC174: CMOS level

  For 74HCT174: TTL level

Six edge-triggered D-type flip-flops

Asynchronous master reset

Complies with JEDEC standard no. 7A

ESD protection:

  HBM JESD22-A114F exceeds 2000 V

  MM JESD22-A115-A exceeds 200 V.

Specified from -40℃ to +85℃ and from -40℃ to +125℃