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”