HD74LVC2244A Datasheet, PDF (1/14 Pages) Hitachi Semiconductor – Octal Buffers / Line Drivers with 3-state Outputs

HD74LVC2244A
Octal Buffers / Line Drivers with 3–state Outputs
ADE-205-234 (Z)
Preliminary
1st. Edition
December 1998
Description
The HD74LVC2244A has eight line drivers with three state outputs in a 20 pin package. This device is a
noninverting buffer and has two active low enables (1G and 2G). Each enable independently controls four
buffers.
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 outputs V_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