General Description

This Schottky TTL eight-bit universal register features multiplexed inputs/outputs to achieve full eight bit data handling in a single 20-pin package. Two function-select inputs and two output-control inputs can be used to choose the modes of operation listed in the function table.

Features

■ Multiplexed inputs/outputs provide improved bit density

■ Four modes of operation:

Hold (Store) Shift Left

Shift Right Load Data

■ 3-STATE outputs drive bus lines directly

■ Can be cascaded for N-bit word lengths

■ Operates with outputs enabled or at high Z

■ Guaranteed shift (clock) frequency 50 MHz

■ Typical power dissipation 700 mW