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SN74LS170 - 4 x 4 REGISTER FILE OPEN-COLLECTOR

Download the SN74LS170 datasheet PDF. This datasheet also covers the SN74LS170D variant, as both devices belong to the same 4 x 4 register file open-collector family and are provided as variant models within a single manufacturer datasheet.

Features

  • 3-state outputs.
  • Simultaneous Read/ Write Operation.
  • Expandable to 512 Words of n-Bits.
  • Typical Access Time of 20 ns.
  • Low Leakage Open-Collector Outputs for Expansion.
  • Typical Power Dissipation of 125 mW.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SN74LS170D_MotorolaInc.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
SN74LS171 QUADRUPLE D-TYPE FLIP-FLOPS Texas Instruments
SN74LS173A 4-BIT D-TYPE REGISTERS Texas Instruments
SN74LS174 Hex D Flip-Flop ON Semiconductor
SN74LS174 HEX/QUADRUPLE D-TYPE FLIP-FLOPS Texas Instruments
SN74LS175 Quad D Flip-Flop ON Semiconductor

Other Datasheets by Motorola Semiconductor (now NXP Semiconductors)

Part Number Description
SN74LS173A 4-BIT D-TYPE REGISTER
SN74LS174 HEX D FLIP-FLOP
SN74LS175 QUAD D FLIP-FLOP
SN74LS10 TRIPLE 3-INPUT NAND GATE
SN74LS107A DUAL JK NEGATIVE EDGE-TRIGGERED FLIP-FLOP

Full PDF Text Transcription

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4 x 4 REGISTER FILE OPEN-COLLECTOR The TTL / MSI SN54 / 74LS170 is a high-speed, low-power 4 x 4 Register File organized as four words by four bits. Separate read and write inputs, both address and enable, allow simultaneous read and write operation. Open-collector outputs make it possible to connect up to 128 outputs in a wired-AND configuration to increase the word capacity up to 512 words. Any number of these devices can be operated in parallel to generate an n-bit length. The SN54 / 74LS670 provides a similar function to this device but it features 3-state outputs.
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