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HD74LVC138 - 3-to-8-line Decoder / Demultiplexer

Description

The HD74LVC138 has three binary select inputs in a 16 pin package.

If the device is enabled these inputs determine which one of the eight normally high outputs will go low.

Two active low and one active high enables are provided to ease the cascading of decoders.

Features

  • VCC = 2.0 V to 5.5 V All inputs VIH (Max. ) = 5.5 V (@VCC = 0 V to 5.5 V) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C) High output current ±24 mA (@VCC = 3.0 V to 5.5 V) HD74LVC138 Function Table Inputs Enable G1 X X L H H H H H H H H H: L: X: G2A X H X L L L L L L L L G2B H X X L L L L L L L L Select C X X X L L L L H H H H B X X X L L H H L L H H A X X X L H L H L H L H Y0.

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Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
HD74LVC139 Dual 2-to-4-line Decoders / Demultiplexers
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Full PDF Text Transcription

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HD74LVC138 3-to-8-line Decoder / Demultiplexer ADE-205-068B(Z) Rev.2 September 1995 Description The HD74LVC138 has three binary select inputs in a 16 pin package. If the device is enabled these inputs determine which one of the eight normally high outputs will go low. Two active low and one active high enables are provided to ease the cascading of decoders. Low voltage and high speed operation is suitable at the battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation. Features • • • • • VCC = 2.0 V to 5.5 V All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C) High output current ±24 mA (@VCC = 3.
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