STMicroelectronics HCF4021M013TR

HCF4021 ROHS3Compliant Tape & Reel (TR) e4 shift register 120ns 1.65mm 3V -55C~125C

Shift Register Single 8-Bit Serial/Parallel to Parallel 16-Pin SOP T/R

ASYNCHRONOUS PARALLEL IN OR SYNCHRONOUS SERIAL IN / SERIAL OUT 8-STAGE STATIC SHIFT REGISTER Parallel In Serial Out, 4000/14000/40000 Series, 8-Bit, Right Direction, True Output, CMOS, PDSO16

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 register having common CLOCK andPARALLEL/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 asynchronous. In this device, entry is controlled by thePARALLEL/SERIAL CONTROL input. When the PARALLEL/SERIAL CONTROL input is low, datais serially shifted into the 8-stage register synchronously with the positive transition of heclock line. When the PARALLEL/SERIAL CONTROL input is high, data is jammed into the8-stage register via the parallel input lines and synchronous with the positive transition of the clock line, the CLOCK input of the internal stage is "forced" when asynchronous parallel entry is made. Register expansion using multiple package is permitted.