The SN54ABT16540 and SN74ABT16540A are inverting 16-bit
buffers/drivers composed of two 8-bit sections with separate
output-enable gates. These buffers and bus drivers provide a
high-performance bus interface for wide data paths.
The 3-state control gate is a 2-input AND gate with active-low
inputs so that if either output-enable ( or ) input is high, all corresponding
outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down,
should be tied
to VCC through a pullup resistor; the minimum value of the
resistor is determined by the current-sinking capability of the
The SN54ABT16540 is characterized for operation over the full
military temperature range of -55°C to 125°C. The
SN74ABT16540A is characterized for operation from -40°C to
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