# CD54AC164/3A & CD54ACT164/3A - 8-Bit Serial-In/Parallel-Out Shift Registers

## Description
️· 8-bit serial-in/parallel-out shift registers utilizing Harris Advanced CMOS Logic technology.
️· Includes asynchronous reset.
️· Data shifted on the positive edge of the clock (CP).
️· Two Serial Data inputs (DS1 and DS2) which can also be used as Data Enable controls.
️· Supplied in 14-lead dual-in-line ceramic packages (F suffix).

## Features
️· Positive-edge clock triggering.
️· Asynchronous reset functionality (MR pin resets the register and outputs to LOW).

## Absolute Maximum Ratings
️· DC Supply Voltage (VCC): -0.5V to +6V
️· Operating Temperature Range: -55°C to +125°C
️· Storage Temperature: -65°C to +150°C
️· Power Dissipation: Up to 500mW (depending on temperature range)

## Recommended Operating Conditions

️· Supply Voltage Range:
- CD54AC Types: 1.5V to 5.5V
- CD54ACT Types: 4.5V to 5.5V
️· Operating Temperature Range: -55°C to +125°C

## Input/Output Characteristics
️· Input Rise and Fall Slew Rate:
- AC Types (1.5V to 3V): 0ns/V to 50ns/V
- AC Types (3.6V to 5.5V): 0ns/V to 20ns/V
- AC Types (4.5V to 5.5V): 0ns/V to 10ns/V
️· Input/Output Voltage: 0V to VCC

## Electrical Specifications
️· ACT Input Load:
- DS1, DS2: 0.5
- MR: 0.74
- CP: 0.71