74F164ASCX

Overview

The onsemi 74F164ASCX is an 8-bit serial-in, parallel-out shift register from the 74F logic family. It operates within a supply voltage range of +4.5V to +5.5V and features tri-state outputs in a 14-lead SOIC package. The device supports a typical shift frequency of 90 MHz with a maximum clock frequency up to 120 MHz at +25°C. Key electrical characteristics include a propagation delay of 3.0 ns (min) to 7.5 ns (max) and a power supply current of 35 mA (typical). It functions reliably across an ambient temperature range of 0°C to +70°C.

Feature Summary

• Features asynchronous Master Reset functionality that clears all outputs independent of the clock signal.
• Incorporates a gated serial data input via a 2-input AND gate for synchronous data entry.
• Provides fully synchronous data transfers triggered by the LOW-to-HIGH transition of the clock pulse.

Applications

• High-speed serial-to-parallel data conversion circuits
• Digital display driver interfaces requiring rapid data shifting
• Parallel output generation from serial data streams

Procurement Notes

Verify the specific ordering suffix 'X' indicates tape and reel packaging as documented in the datasheet. Confirm the manufacturer origin, noting historical Fairchild Semiconductor branding may appear on older documentation. Ensure the component meets the required 14-lead SOIC physical dimensions and JEDEC MS-120 standards for your PCB layout.

Selection Notes

Select this component when high-speed performance is critical, as it offers significantly faster switching than standard 74F variants. Consider the tri-state output capability if bus sharing is required in the design. Verify that the 4.5V to 5.5V operating voltage aligns with the system power rails and that the 0°C to +70°C commercial temperature range suffices for the application environment.

Part Context

This part belongs to the 74F series of logic integrated circuits, known for high-speed operation compared to standard TTL equivalents. The 74F164A designation identifies it specifically as an 8-bit shift register variant. The 'ASC' prefix denotes the specific package type and speed grade, while the 'X' suffix confirms the reel packaging format for automated assembly processes.

Replacement Considerations

The 74F164 is referenced as a slower version of the 74F164A; however, direct pin-compatible substitutes are not explicitly listed in the provided documentation. Verify functional equivalence and timing parameters before considering alternative manufacturers or series replacements.