74F164ASJ

Overview

The Fairchild Semiconductor 74F164ASJ is an 8-bit serial-in parallel-out shift register belonging to the F/FAST logic series. It operates with a positive-edge triggered clock and features gated serial inputs for data control. The device includes an asynchronous clear function that resets all flip-flops independently of the clock signal. Packaged in a 16-lead Small Outline Package (SOP), it supports synchronous data entry while allowing input changes during clock high or low states, provided setup and hold times are met.

Feature Summary

• Gated serial inputs allow complete control over incoming data by inhibiting entry when either input is low
• Asynchronous clear function resets all flip-flops to low level regardless of clock state
• Fully buffered clock and serial inputs minimize transmission-line effects through diode clamping

Applications

• Serial-to-parallel data conversion in digital systems
• Parallel output generation from serial data streams
• Data storage and buffering applications requiring asynchronous reset capability

Procurement Notes

Verify the specific suffix ASJ against official Fairchild documentation to confirm package type and pinout compatibility. Ensure the component meets required operating temperature ranges and voltage specifications for the target application. Cross-reference datasheet revision dates to confirm feature consistency. Confirm RoHS compliance status if environmental regulations apply to the end product.

Selection Notes

Select this component when an 8-bit shift register with separate serial enable controls is required. The F/FAST series offers higher speed performance compared to standard 74LS equivalents. Consider the asynchronous clear feature for system initialization needs. Verify that the SOP package fits the available PCB footprint constraints and that the positive-edge triggering aligns with the system clock polarity.

Part Context

The 74F164ASJ is part of the broader 74F164 family of 8-bit shift registers manufactured by Fairchild Semiconductor. It shares functional similarities with other devices in the 74F series but is distinguished by its specific package configuration and electrical characteristics. This component serves as a fundamental building block for sequential logic circuits requiring serial data processing.