HD74LVCR2245A Datasheet, PDF (1/13 Pages) Hitachi Semiconductor – Octal Bidirectional Transceivers with 3-state Outputs

HD74LVCR2245A
Octal Bidirectional Transceivers with 3–state Outputs
ADE-205-235A (Z)
Preliminary
2nd. Edition
January 1999
Description
The HD74LVCR2245A has eight buffers with three state outputs in a 20 pin package. When (T / R) is
high, data flows from the A inputs to the B outputs, and when (T / R) is low, data flows from the B inputs
to the A outputs. A and B bus are separated by making enable input (OE) high level.
All outputs, which are designed to sink up to 12 mA, include equivalent 26 Ω resistors to reduce overshoot
and undreshoot.
When V_CC is between 0 and 1.5 V, the device is in the high impedance state during power up or power
down.
Low voltage and high speed operation is suitable at battery drive product (note type personal computer) and
low power consumption extends the life of a battery for long time operation.
Features
• V_CC = 1.65 to 5.5 V
• All inputs V_IH (Max) = 5.5 V (@V_CC = 0 to 5.5 V)
• All inputs / outputs V_{I / O} (Max) = 5.5 V (@V_CC = 0 V or output off state)
• Typical V_OL ground bounce < 0.8 V (@V_CC = 3.3 V, Ta = 25°C)
• Typical V_OH undershoot > 2.0 V (@V_CC = 3.3 V, Ta = 25°C)
• High output current ±12 mA (@V_CC = 3.0 to 5.5 V)
• All outputs have equivalent 26 Ω series resistors, so no external resistors are required