74HC164D

General description

The 74HC164; 74HCT164 are high-speed Si-gate CMOS devices and are pin compatible

with Low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC

standard no. 7A.

The 74HC164; 74HCT164 are 8-bit edge-triggered shift registers with serial data entry

and an output from each of the eight stages. Data is entered serially through one of two

inputs (DSA or DSB); either input can be used as an active HIGH enable for data entry

through the other input. Both inputs must be connected together or an unused input must

be tied HIGH.

Data shifts one place to the right on each LOW-to-HIGH transition of the clock (CP) input

and enters into Q0, which is the logical AND of the two data inputs (DSA and DSB) that

existed one set-up time prior to the rising clock edge.

A LOW level on the master reset (MR) input overrides all other inputs and clears the

register asynchronously, forcing all outputs LOW.

74HC164D

Features

„ Input levels:

‹ For 74HC164: CMOS level

‹ For 74HCT164: TTL level

„ Gated serial data inputs

„ Asynchronous master reset

„ Complies with JEDEC standard no. 7A

„ ESD protection:

‹ HBM JESD22-A114F exceeds 2000 V ‹ MM JESD22-A115-A exceeds 200 V.

„ Multiple package options

„ Specified from −40 °C to +85 °C and −40 °C to +125 °C.

74HC164D

74HC164D

74HC164D

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