SN54ABT16861, SN74ABT16861
20-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS

SCBS455 - OCTOBER 1992

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) < 1 V at V_CC = 5 V, T_A = 25°C
• Distributed V_CC and GND Pin Configuration Minimizes High-Speed Switching Noise
• Flow-Through Architecture Optimizes PCB Layout
• High-Drive Outputs (-32-mA I_OH, 64-mA I_OL)
• Packaged in Plastic 300-mil Shrink Small-Outline Packages (DL) and 380-mil Fine-Pitch Ceramic Flat Packages (WD) Using 25-mil Center-to-Center Spacings

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

description

The 'ABT18861 is a 20-bit transceiver designed for asynchronous communication between data buses. The control function implementation allows for maximum flexibility in timing.

The 'ABT16861 can be used as two 10-bit transceivers or one 20-bit transceiver. It allows data transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic levels at the output-enable ( and ) inputs.

To ensure the high-impedance state during power up or power down, 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.

The SN74ABT16861 is packaged in TI's shrink small-outline package (DL), which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area.

The SN54ABT16861 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT16861 is characterized for operation from -40°C to 85°C.