National Semiconductor 54AC / 74AC378 Parallel D Register with Enable
Summary
This comprehensive manual details the 54AC/74AC378, a high-speed 6-bit parallel D-type register designed for advanced digital logic applications. It provides electronics engineers and hardware designers with critical specifications, including functional truth tables, electrical characteristics (min/max ratings), pin assignments, and operational guidelines necessary for reliable system integration. Use this guide to verify performance parameters for developing robust digital circuits requiring common clock and enable control.
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54AC/74AC378 Parallel Register with Enable General Description Features
The ’AC378 is 6-bit register with buffered common En- 6-bit high-speed parallel register
able. This device is similar to the ’AC174, but with common Positive edge-triggered D-type inputs Enable rather than common Master Reset. Fully buffered common clock and enable inputs
Input clamp diodes limit high-speed termination effects Standard Military Drawing (SMD) ’AC378: 5962-91605
Logic Symbols Connection Diagrams
Pin Assignment for Pin Assignment DIP, SOIC and Flatpak for LCC
TL/F/10231–1
TL/F/10231–3
IEEE/IEC
TL/F/10231–2
TL/F/10231–4
Pin Names Description
Enable Input (Active LOW)
D0–D5 Data Inputs CP Clock Pulse Input (Active Rising Edge) Q0–Q5 Outputs
FACTTM is trademark of National Semiconductor Corporation.
C1995 National Semiconductor Corporation TL/F/10231 RRD-B30M75/Printed in U. S. A.
Page Summary Contents For National Semiconductor 54AC / 74AC378 Parallel D Register with Enable
Manual Details
| Brand | National |
|---|---|
| Pages | 8 |
| File Size | 166.01 KB |
| Published | May 30, 2026 |
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