Key facts
- Brand
- SGS-THOMSON
- Model
- M54
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-06
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SGS-THOMSON M54 /74HC90/691M54/74HC692/693 handbook
This document is a technical datasheet for the SGS-THOMSON M54/74HC690/691/692/693 series of microelectronics components. These devices are high-speed CMOS counters and registers fabricated in silicon gate CMOS technology, offering low power consumption combined with LSTTL speed performance.
The datasheet details the internal circuitry, which includes a synchronous counter, four-bit D-type register, and quadruple two-line to one-line multiplexers with three-state outputs. It provides comprehensive information on pin connections, logic symbols, truth tables, timing charts for various modes (HC690/691 vs HC692/693), equivalent circuits, and mechanical data for the PLCC20 package.
SGS-THOMSON M54 specifications
| Max Supply Current | 4 mA |
|---|---|
| Noise Immunity Voltage | 28 % Voc |
| Operating Voltage Range | 2 V to 6 V |
All SGS-THOMSON M54 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How does the R/C input select between counter and register modes?
The internal counter is selected when the R/C input is low, and the register is selected when it is high.
What are the output drive capabilities for Qa to Qp?
The outputs can drive 15 LSTTL loads if in a plastic package and 10 LSTTL loads if in a ceramic package.
What is the typical maximum operating frequency of the device?
The flip‑flop can operate up to 77 MHz typical at a 5 V supply.
From: SGS-THOMSON M54/74HC374 and M54/74HC534 Octal D-Type Flip-Flop Datasheet
How many outputs does the flip‑flop have and are they three‑state?
It has eight outputs, all of which can be placed in a high‑impedance three‑state condition.
From: SGS-THOMSON M54/74HC374 and M54/74HC534 Octal D-Type Flip-Flop Datasheet