SN54ABT16623, SN74ABT16623 16-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SCBS211B - FEBRUARY 1991 - REVISED JANUARY 1997

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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)
Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings

Widebus and EPIC-IIB are trademarks of Texas Instruments

description

The 'ABT16623 are 16-bit transceivers designed for asynchronouscommunication between data buses. The control-function implementationallows for maximum flexibility in timing. The 'ABT16623 provide truedata at the outputs.

These devices can be used as two 8-bit transceivers or one 16-bittransceiver. They allow data transmission from the A bus to the B busor from the B bus to the A bus, depending on the logic levels at theoutput-enable (OEAB and )inputs. The output-enable inputs can be used to disable the device sothat the buses are effectively isolated. The dual-enableconfiguration gives the transceivers the capability of storing databy simultaneously enabling OEAB and . Each output reinforces its input in thisconfiguration. When both OEAB and are enabled and all other data sources to the two setsof bus lines are at high impedance, both sets of bus lines (32 total)remain at their last states.

To ensure the high-impedance state during power up or power down, should be tiedto V_CC through a pullup resistor; the minimum value of theresistor is determined by the current-sinking capability of thedriver. OEAB should be tied to GND through a pulldown resistor; theminimum value of the resistor is determined by the current-sourcingcapability of the driver.

The SN54ABT16623 is characterized for operation over the fullmilitary temperature range of -55°C to 125°C. TheSN74ABT16623 is characterized for operation from -40°C to85°C.

Title: 16-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
Product Family: STANDARD TRANSCEIVERS
Device Functionality: 16-BIT BUS TRANSCEIVER
Orderable Devices: SN74ABT16623DGGR, SN74ABT16623DL, SN74ABT16623DLR

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View more information about generic part numbers:SN74ABT16623

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