SN54ABT32245, SN74ABT32245 36-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SCBS228C - JUNE 1992 - APRIL 1995

features

• Members of the Texas Instruments Widebus+^TM Family
• State-of-the-Art EPIC-IIB^TM BiCMOS Design Significantly Reduces Power Dissipation
• Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
• Typical V_OLP (Output Ground Bounce) < 0.8 V at V_CC = 5 V, T_A = 25°C
• Distributed V_CC and GND Pin Configuration Minimizes High-Speed Switching Noise
• High-Drive Outputs (-32-mA I_OH, 64-mA I_OL)
• Bus-Hold Inputs Eliminate the Need for External Pullup Resistors
• Packaged in 100-Pin Plastic Thin Quad Flat (PZ) Package With 14 × 14-mm Body Using 0.5-mm Lead Pitch

  Widebus+ and EPIC-IIB are trademarks of Texas Instruments Incorporated.

description

The ŽABT32245 are 36-bit (quad 9-bit) noninverting 3-state transceivers designed for synchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements.

These devices can be used as four 9-bit transceivers, two18-bit transceivers, or one 36-bit transceiver. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) inputs. The output-enable (OE\) inputs 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, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry holds unused or floating data inputs at a valid logic level.

The SN54ABT32245 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT32245 is characterized for operation from -40°C to 85°C.

View more information about generic part numbers:SN54ABT32245, SN74ABT32245

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