DM74LS469 Datasheet (Fairchild Semiconductor)

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 reg

DM74LS469 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