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74LS398 Datasheet Quad 2-port Register

Manufacturer: Motorola Semiconductor (now NXP Semiconductors)

Overview: QUAD 2-PORT REGISTER The SN54 / 74LS398 and SN54 / 74LS399 are Quad 2-Port Registers. They are the logical equivalent of a quad 2-input multiplexer followed by a quad 4-bit edge-triggered register. A mon Select input selects between two 4-bit input ports (data sources). The selected data is transferred to the output register on the LOW-to-HIGH transition of the Clock input.

Key Features

  • both Q and Q inputs, while the SN54 / 74LS399 has only Q outputs.
  • Select From Two Data Sources.
  • Fully Positive Edge-Triggered Operation.
  • Both True and Complemented Outputs on SN54 / 74LS398.
  • Input Clamp Diodes Limit High-Speed Termination Effects.

More Datasheets from Motorola Semiconductor (now NXP Semiconductors)

Part Number Description
74LS393 DUAL DECADE COUNTER
74LS395 4-BIT SHIFT REGISTER
74LS399 QUAD 2-PORT REGISTER
74LS322 8-BIT SHIFT REGISTERS
74LS33 QUAD 2-INPUT NOR BUFFER
74LS348 8-INPUT PRIORITY ENCODERS
74LS367 3-STATE HEX BUFFERS
74LS373 OCTAL TRANSPARENT LATCH
74LS374 OCTAL TRANSPARENT LATCH
74LS375 4-BIT D LATCH

74LS398 Distributor