DM74LS469 8-Bit Up/Down Counter

DM74LS469 8-Bit Up/Down Counter

The ’LS469 is an 8-bit synchronous up/down counter with parallel load and hold capability. Three function-select inputs (LD, UD, CBI) provide one of four operations which occur synchronously on the rising edge of the clock (CK). The LOAD operation loads the inputs (D7–D0) into the output register (Q.

Features

Benefits n 8-bit up/down counter for microprogram-counter, DMA controller and general-purpose counting applications n 8 bits matches byte boundaries n Bus-structured pinout n 24-pin SKINNYDIP saves space n 3-STATE outputs drive bus lines n Low current PNP inputs reduce loading n Expandable in 8-bit increments Connection Diagram Top View Standard Test Load DS008333-3 DS008333-1 Order Number DM54LS469J, DM74LS469J or DM74LS469N See Package Number J24F or N24C © 1998 Fairchild Semiconductor Corporation DS008333 www.fairchildsemi.com Function Table OE H L L L L L CK X ↑ ↑ ↑ ↑ ↑ LD X L H .