Fairchild VHC/VHCT Logic Family Introduction Handbook

This document introduces the Very High-speed CMOS (VHC) logic family from Fairchild Semiconductor, which is an upgrade from HCMOS with higher performance and lower power consumption

Brand: Fairchild
Category: Other Electronics
Document type: Product Leaflet
Language: English
Pages: 1
File format: PDF
File size: 10 KB
Published: 01 August, 2012
Updated: 30 September, 2023
MD5 checksum: 4FACFA38C89AC6EF13684D6012F367F3
PDF: Fairchild VHC/VHCT Logic Family Introduction Handbook PDF

About this manual

Fairchild Semiconductor's Very High-speed CMOS (VHC) logic family offers a technology upgrade from older HCMOS families. It delivers nearly three times the speed of comparable HCMOS functions at twice the output current drive while maintaining power consumption and noise levels similar to HC. VHC is specified over a 2.0V to 5.5V operating range, with guaranteed 3.3V specifications for low-voltage designs.

What's inside

Introduction
Features and Benefits
VHCT Options
Package Options
VHC vs HC Specifications

Specifications

Operating Voltage Range (Voc)	2.0V to 5.5V
Input Over-voltage Protection	7.0V
TTL Supply Range (VHCT)	4.5V to 5.5V
TTL Input High Voltage (Vih)	2.0V
Output Current Drive	+8 mA

Frequently asked questions

What is the main benefit of VHC over HCMOS?

VHC provides nearly three times the speed and twice the output current drive compared to HCMOS.

Can VHCT be interfaced directly with TTL parts?

Yes, VHCT versions have adjusted input thresholds allowing direct interface with TTL parts and sub-systems.

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