PHILIPS 74HC HCT194 4-bit Bidirectional Universal Shift Register Data Sheet Owner's Manual
Summary
The 74HC/HCT194 is a versatile 4-bit bidirectional universal shift register designed for high-speed digital logic applications. It is engineered to handle flexible data movement using both serial and parallel transfer methods, featuring asynchronous master reset capabilities. This comprehensive manual details the device's full operational scope, coverage includes functional mode selection, electrical reference data (timing diagrams), pin definitions, and CMOS specifications. It is essential documentation for electronics engineers prototyping or designing synchronizing logic circuits that require robust and versatile data storage solutions compatible with standard TTL systems.
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INTEGRATED CIRCUITS
DATA SHEET For a complete data sheet, please also download: The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications The IC06 74HC/HCT/HCU/HCMOS Logic Package Information The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT194 4-bit bidirectional universal shift register
Product specification December
File under Integrated Circuits, IC06
Page Summary Contents For PHILIPS 74HC HCT194 4-bit Bidirectional Universal Shift Register Data Sheet Owner's Manual
Manual Details
| Brand | Philips |
|---|---|
| Pages | 10 |
| File Size | 72.58 KB |
| Published | July 04, 2026 |
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Frequently Asked Questions
What is the max clock frequency of the 74HC/HCT194?
The 74HC version has a max frequency of 102 MHz, and the HCT version has 77 MHz.
How do I reset the 74HC/HCT194 register?
Apply a LOW signal to the asynchronous master reset (MR) pin, which forces all Q outputs LOW.
Is the 74HC/HCT194 compatible with LSTTL?
Yes, it is pin compatible with low power Schottky TTL (LSTTL) and meets JEDEC standard no. 7A.
What shift directions does the 74HC/HCT194 support?
It supports shift-left, shift-right, parallel data entry, and a hold mode when both mode select inputs are LOW.