0
ACTIVE
Supply voltage (min) (V) |
4.5 |
Supply voltage (max) (V) |
5.5 |
Number of channels |
16 |
IOL (max) (mA) |
64 |
IOH (max) (mA) |
-32 |
Input type |
TTL |
Output type |
TTL |
Features |
Over-voltage tolerant inputs, Partial power down (Ioff), Power up 3-state, Very high speed (tpd 5-10ns) |
Technology family |
ABT |
Rating |
Catalog |
Operating temperature range (°C) |
-40 to 85 |
SSOP (DL)-56-190.647 mm² 18.42 x 10.35
Widebus and EPIC-IIB are trademarks of Texas Instruments Incorporated.
The 'ABT16543 16-bit registered transceivers contain two sets of
D-type latches for temporary storage of data flowing in either
direction. The 'ABT16543 can be used as two 8-bit transceivers or one
16-bit transceiver. Separate latch-enable (
or
) and output-enable (
or 
) inputs are
provided for each register to permit independent control in either
direction of data flow.
The A-to-B enable (
)
input must be low to enter data from A or to output data from B. If
is low and is low, the A-to-B latches are
transparent; a subsequent low-to-high transition of puts the A latches in the storage
mode. With and both low, the 3-state B outputs are
active and reflect the data present at the output of the A latches.
Data flow from B to A is similar but requires using the
,, and inputs.
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 SN54ABT16543 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT16543 is characterized for operation from -40°C to 85°C.
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