Overview

The 74FCT621T is an octal transceiver with non-inverting open-drain bus compatible outputs in both send and receive directions. The B bus outputs are capable of sinking 64mA, providing very good capacitive drive characteristics. The 74FCT621A is designed for asynchronous two-way communication between data buses. The device operates at -40 °C to +85 °C.

74FCT621T - Block Diagram
74FCT621T - Block Diagram
  • Standard and A speeds
  • Low input and output leakage ≤1µA (max.)
  • CMOS power levels
  • True TTL input and output compatibility: VOH = 3.3V (typ.); VOL = 0.3V (typ.)
  • Meets or exceeds JEDEC standard 18 specifications
  • Power off disable outputs permit "live insertion"
  • Available in a 20-pin SOIC package

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    74FCT621ATSOG
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    Samples Available
    		 SOIC 20 C Yes Tube 1 1.488 Get Samples,
    74FCT621ATSOG8
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    		SOIC 20 C Yes Reel 1
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