CAHCT164QWBQARQ1

Shift Registers Overview

The CAHCT164QWBQARQ1 is an automotive-grade 8-bit serial-in, parallel-out shift register manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and utilizes CMOS technology. The device features two serial data inputs (A and B) and a clock input, enabling efficient serial-to-parallel data conversion. Designed for robust performance in automotive environments, it supports a wide operating temperature range from -40°C to +125°C. The component is housed in a WQFN-14 package, suitable for surface-mount applications requiring compact footprints.

Shift Registers Feature Summary

• Automotive qualification ensuring reliability in vehicle electronic systems
• Serial-to-parallel data conversion capability with dual serial inputs
• CMOS logic technology providing low power consumption and high noise immunity
• Wide operating temperature range suitable for harsh automotive environments

Shift Registers Applications

• Automotive infotainment system data interfaces
• Instrument cluster display drivers
• Body control module signal expansion
• Telematics unit peripheral interfacing

Shift Registers Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to ensure correct automotive grade and packaging specifications. Confirm RoHS compliance status and specific tape-and-reel quantities required for production integration. Cross-reference datasheet revisions to validate electrical characteristics match current design requirements before finalizing procurement orders.

Shift Registers Selection Notes

Select this component when designing automotive circuits requiring reliable serial-to-parallel conversion under strict voltage constraints. Ensure the system operates strictly within the 4.5 V to 5.5 V supply range to maintain logical integrity. Consider the WQFN-14 package dimensions for PCB layout compatibility. Verify thermal management capabilities align with the specified -40°C to +125°C operating range for the intended application environment.

Shift Registers Part Context

This device belongs to the SN74AHC164-Q1 family of automotive shift registers. It provides eight parallel outputs driven by a single serial input stream. The Q1 designation indicates adherence to automotive quality standards. The WQFN package offers a small footprint compared to traditional through-hole alternatives, facilitating dense board layouts in modern automotive electronics where space is limited.

Shift Registers FAQ

What is the function of the A and B inputs?

The A and B inputs serve as dual serial data inputs that are internally ANDed together. Data is shifted into the register only when both inputs are high, allowing for flexible serial data gating.

Is this component suitable for high-temperature automotive engines?

Yes, the device is rated for an operating temperature range up to +125°C, making it suitable for various under-the-hood and cabin automotive applications.