54F322中文资料美国国家半导体数据手册PDF规格书

General Description

The ’F322 is an 8-bit shift register with provision for either serial or parallel loading and with TRI-STATEÉ parallel outputs plus a bi-state serial output. Parallel data inputs and parallel outputs are multiplexed to minimize pin count. State changes are initiated by the rising edge of the clock. Four synchronous modes of operation are possible: hold (store), shift right with serial entry, shift right with sign extend and parallel load. An asynchronous Master Reset (MR) input overrides clocked operation and clears the register.

特性 Features

Multiplexed parallel I/O ports

Separate serial input and output

Sign extend function

TRI-STATE outputs for bus applications