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DM54LS469

Part Number	DM54LS469
Manufacturer	National Semiconductor
Description	DM54LS469/DM74LS469 8-Bit Up/Down Counter
Published	Apr 1, 2005
Detailed Description	DM54LS469 DM74LS469 8-Bit Up Down Counter July 1989 DM54LS469 DM74LS469 8-Bit Up Down Counter General Description The ...
Datasheet	DM54LS469 PDF File

Overview

DM54LS469 DM74LS469 8-Bit Up Down Counter July 1989 DM54LS469 DM74LS469 8-Bit Up Down Counter General Description 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 (Q7 – Q0) The HOLD operation holds the previous value regardless of clock transitions The INCREMENT operation adds one to the output register when the carry-in input is TRUE (CBI e LOW) otherwise the operation is a HOLD The carry-out (CBO) is TRUE (CBO e LOW) when the output register (Q7 – Q0) is all HIGHs otherwise FALSE (CBO e HIGH) The DECREMENT operation subtracts one from the output register when the borrow-in input is TRUE (CBI e LOW) otherwise the operation is a HOLD The borrow-out (CBO) is TRUE (CBO e LOW) when the output register (Q7 – Q0) is all LOWs otherwise FALSE (CBO ...

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