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HD74LV245A - Octal Bus Transceivers with 3-state Outputs

Description

The HD74LV245A has eight buffers with three-state outputs in a 20-pin package.

When DIR is high, data is transferred from the A inputs to the B outputs, and when DIR is low, data is transferred from the B inputs to the A outputs.

Features

  • VCC = 2.0 V to 5.5 V operation All inputs VIH (Max. ) = 5.5 V (@VCC = 0 V to 5.5 V) All outputs VO (Max. ) = 5.5 V (@VCC = 0 V) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C) Output current ±8 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V) Function Table Inputs OE L L H Note: H: High level L: Low level X: Immaterial DIR L H X Operation B data to A bus A dat.

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Part Number Description
HD74LV240A Octal Buffers / Drivers with 3-state Outputs
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Full PDF Text Transcription

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HD74LV245A Octal Bus Transceivers with 3-state Outputs ADE-205-247 (Z) 1st Edition March 1999 Description The HD74LV245A has eight buffers with three-state outputs in a 20-pin package. When DIR is high, data is transferred from the A inputs to the B outputs, and when DIR is low, data is transferred from the B inputs to the A outputs. The A and B buses are separated by making the enable input (OE) high level. Lowvoltage operation is suitable for battery-powered products (e.g., notebook computers), and the low power consumption extends the battery life. Features • • • • • • VCC = 2.0 V to 5.5 V operation All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) All outputs VO (Max.) = 5.5 V (@VCC = 0 V) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.
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