0
ACTIVE
Supply voltage (min) (V) |
4.5 |
Supply voltage (max) (V) |
5.5 |
Number of channels |
8 |
IOL (max) (mA) |
64 |
IOH (max) (mA) |
-32 |
Input type |
TTL |
Output type |
TTL |
Features |
Over-voltage tolerant inputs, Partial power down (Ioff), Very high speed (tpd 5-10ns) |
Technology family |
ABT |
Rating |
Catalog |
Operating temperature range (°C) |
-40 to 85 |
PDIP (N)-20-228.702 mm² 24.33 x 9.4
EPIC-IIB is a trademark of Texas Instruments Incorporated.
The 'ABT640 bus transceivers are designed for asynchronous
communication between data buses. These devices transmit inverted
data from the A bus to the B bus or from the B bus to the A bus,
depending on the level at the direction-control (DIR) input. The
output-enable (
) input can be
used to disable the device so that the buses are effectively
isolated.
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
driver.
The SN54ABT640 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT640 is characterized for operation from -40°C to 85°C.
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