HCF4021BEY

◇ 产品简介 ◇

The HCF4021B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages.This device is an 8-stage parallel or serial input/serial output reg-ister having common CLOCK and PARALLEL/SERIAL CONTROL inputs, a single SERIAL data input, and individual parallel "JAM"inputs to each register stage. Each register stage is a D-type, master-slave flip-flop in addition to an output from stage 8, "Q" outputs are also available from stages 6 and 7. Serial entry is synchronous with the clock but parallel entry is asynchronousIn this device, entry is co-ntrolled by thePARALLEL/SERIAL CONTROL input. When the PARALLEL/SERIAL CONTROL input is low, data is serially shifted into the 8-stage register synchr-onously with the positive transition of he clock li-ne. When the PARALLEL/SERIAL CONTROL input is high, data is jammed into the 8-stage register via the parallel input lines and sync-ronous with the positive transition of theclock line, the CLOCK input of the internal stage is"forced" when asyn-chronous parallel entry is made. Register expansion using multiple package is permitted.

◇ 功能特性 ◇

●MEDIUM SPEED OPERATION : 12 MHz(Typ.) CLOCK RATE AT VDD - VSS = 10V
●FULLY STATIC OPERATION
●8 MASTER-SLAVE FLIP-FLOPS PLUS OUTPUT BUFFERING AND CONTROL GATING
●QUIESCENT CURRENT SPECIFIED UP TO 20V
●5V, 10V AND 15V PARAMETRIC RATINGS
●INPUT LEAKAGE CURRENT II = 100nA (MAX) AT VDD = 18V TA = 25°C
●100% TESTED FOR QUIESCENT CURRENT
●MEETS ALL REQUIREMENTS OF JEDEC JESD13B " STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES CMOS DEVICES"