DESCRIPTION

The HCC40108B (extended temperature range) and HCF40108B (intermediate temperature range) are monolithic integrated circuits, available in 24 lead dualin line plastic or ceramic packageand plastic micropackage.

■ FOUR 4-BIT REGISTERS

■ ONE INPUT AND TWO OUTPUT BUSES

■ UNLIMITED EXPANSION IN BIT AND WORD DIRECTION

■ DATA LINES HAVE LATCHED INPUTS

■ 3-STATE OUTPUTS

■ SEPARATE CONTROL OF EACH BUS,

ALLOWING SIMULTANEOUS INDEPENDET

READING AND ANY OF FOUR REGISTERS

ON BUS A AND BUS B AND INDEPENDENT

WRITING INTO ANY ANY OF THE FOUR REGISTERS

■ 40108B IS PINCOMPATIBLE WITH INDUSTRY TYPE MC14580

■ STANDARDIZED, SYMMETRICAL OUTPUT CHARACTERISTICS

■ QUIESCENT CURRENT SPECIFIED AT 20V FOR HCC DEVICE

■ 5V, 10V AND 15V PARAMETRIC RATINGS

■ INPUT CURRENTOF 100nA AT18VAND 25°C FOR HCC DEVICE

■ 100 TESTED FOR QUIESCENT CURRENT

■ MEETS ALL REQUIREMENTS OF JEDECTENTATIVE

STANDARD No 13a, ”STANDARD

SPECIFICATIONS FOR DESCRIPTION OF B

SERIES CMOS DEVICES”