HD74ALVCH162827 Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HD74ALVCH162827

20-bit Buffers / Drivers with 3-state Outputs

Hitachi -> Renesas Electronics 

HD74ALVCH162827

20-bit Buffers / Drivers with 3-state Outputs

ADE-205-188B (Z)

3rd. Edition

December 1999

Description

The HD74ALVCH162827 is composed of two 10-bit sections with separate output enable signals. For

either 10-bit buffer section, the two output enable (1OE1 and 1OE2 or 2OE1 and 2OE2) inputs must both

be low for the corresponding Y outputs to be active. If either output enable input is high, the outputs of that

10-bit buffer section are in the high impedance state. Active bus hold circuitry is provided to hold unused

or floating data inputs at a valid logic level. All outputs, which are designed to sink up to 12 mA, include

26 Ω resistors to reduce overshoot and undershoot.

Features

• VCC = 2.3 V to 3.6 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 ±12 mA (@VCC = 3.0 V)

• Bus hold on data inputs eliminates the need for external pullup / pulldown resistors

• All outputs have equivalent 26 Ω series resistors, so no external resistors are required.

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