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HD74HC444 - (HD74HC442 - HD74HC444) Quad. Tridirectional Bus Transceiver(with noninverted/inverted 3-state outputs)

Download the HD74HC444 datasheet PDF. This datasheet also covers the HD74HC442 variant, as both devices belong to the same (hd74hc442 - hd74hc444) quad. tridirectional bus transceiver(with noninverted/inverted 3-state outputs) family and are provided as variant models within a single manufacturer datasheet.

Description

These bus transceivers are designed for a synchronous three-way communication between four-line data buses.

They give the designer a choice of selecting inverting, noninverting or a combination of inverting and noninverting data paths with 3-state outputs.

Features

  • High Speed Operation High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) HD74HC442/HD74HC443HD74HC444 Function Table Inputs CS H X X X X X L L L L L L L L L S1 X H X L L H L L H L L H L L H S0 X H X L H L L H L L H L L H L GA X X H X H H X L L X H L X L H GB X X H H X H L X L L X H H X L GC X X H H H X L L X H L X L H X.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (HD74HC442_HitachiSemiconductor.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
HD74HC444 Quad Tridirectional Bus Transceiver Renesas
HD74HC442 Quad. Tridirectional Bus Transceiver Renesas
HD74HC443 Quad. Tridirectional Bus Transceiver Renesas
HD74HC4017 Decade Counter / Divider Renesas
HD74HC4020 14-stage Binary Counter Renesas

Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
HD74HC442 Quad. Tridirectional Bus Transceiver
HD74HC443 Quad. Tridirectional Bus Transceiver
HD74HC4017 Decade Counter/Divider
HD74HC4020 14-stage Binary Counter
HD74HC4022 Octal Counters/Dividers

Full PDF Text Transcription

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HD74HC442/HD74HC443/HC74HC444 Quad. Tridirectional Bus Transceiver (with noninverted 3-state outputs) Quad. Tridirectional Bus Transceiver (with inverted 3-state outputs) Quad Tridirectional Bus Transceiver (with noninverted/inverted 3-state outputs) Description These bus transceivers are designed for a synchronous three-way communication between four-line data buses. They give the designer a choice of selecting inverting, noninverting or a combination of inverting and noninverting data paths with 3-state outputs. The S 0 and S1 inputs select the bus from which data are to be transferred. The G inputs enable the bus or buses to which data are to be transferred. The port for any bus selected for input and any other bus not enabled for output will be at high impedance.
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