SN54LS299, SN54S299, SN74LS299, SN74S299 8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS

PRODUCTION DATA documents contain information current as of publicationdate. Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily include testingof all parameters.

features

• Multiplexed Inputs/Outputs Provide Improved Bit Density
• Four Modes of Operations:
  • Hold (Store)
  • Shift Left
  • Shift Right
  • Load Data
• Operates with Outputs Enabled or at High Z
• 3-State Outputs Drive Bus Lines Directly
• Can Be Cascaded for N-Bit Word Lengths
• SN54LS323 and SN74LS323 Are Similar But Have Synchronous Clear
• Applications:
  • Stacked or Push-Down Registers Buffer Storage, and Accumulator Registers

description

These Schottky TTL eight-bit universal registers feature multiplexed inputs/outputsto achieve full eight-bit data handling in a single 20-pin package. Two function-selectinputs and two output-control inputs can be used to choose the modes of operationlisted in the function table.

Synchronous parallel loading is accomplished by taking both function-selectlines, S0 and S1, high. This places the three-state outputs in a high-impedancestate, which permits data that is applied on the input/output lines to beclocked into the register. Reading out of the register can be accomplishedwhile the outputs are enabled in any mode. A direct overriding input is providedto clear the register whether the outputs are enabled or off.

View more information about generic part numbers:SN54LS299, SN54S299, SN74LS299, SN74S299

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(c) Copyright 1998 Texas Instruments Incorporated. All rights reserved.
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