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SN74ABT623TIN/a48avaiOctal Bus Transceivers With 3-State Outputs
SN74ABT623DBRTIN/a616avaiOctal Bus Transceivers With 3-State Outputs
SN74ABT623DWRTIN/a2000avaiOctal Bus Transceivers With 3-State Outputs
SN74ABT623NTIN/a812avaiOctal Bus Transceivers With 3-State Outputs


SN74ABT623DWR ,Octal Bus Transceivers With 3-State Outputsmaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
SN74ABT623N ,Octal Bus Transceivers With 3-State Outputslogic diagram (positive logic)19OEBA1OEAB218A1B1To Seven Other Channels2POST OFFICE BOX 655303 • DA ..
SN74ABT623NSR , OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SN74ABT640DW ,Octal Bus Transceivers With 3-State Outputsmaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
SN74ABT640N ,Octal Bus Transceivers With 3-State Outputslogic diagram (positive logic)19OE1DIR218A1 B1To Seven Other Transceivers2POST OFFICE BOX 655303 • ..
SN74ABT640NSR ,Octal Bus Transceivers With 3-State Outputs SN54ABT640, SN74ABT640 OCTAL BUS TRANSCEIVERSWITH 3-STATE OUTPUTSSCBS104C – FEBRUARY 1991 – REVISE ..
SN74LS156DR2 , DUAL 1-OF-4 DECODER/ DEMULTIPLEXERSN54/74LS155DUAL 1-OF-4 DECODER/SN54/74LS156DEMULTIPLEXERThe SN54/74LS155 and SN54/74LS156 are high ..
SN74LS156N ,DUAL 1-OF-4 DECODER/ DEMULTIPLEXERSN54/74LS155DUAL 1-OF-4 DECODER/SN54/74LS156DEMULTIPLEXERThe SN54/74LS155 and SN54/74LS156 are high ..
SN74LS156NSR ,Dual 2-Line to 4-Line Decoders/Demultiplexers with Open-Collector Outputs
SN74LS157 ,QUAD 2-INPUT MULTIPLEXER
SN74LS157 ,QUAD 2-INPUT MULTIPLEXERSN54/74LS157QUAD 2-INPUT MULTIPLEXERThe LSTTL/ MSI SN54/ 74LS157 is a high speed Quad 2-Input Multi ..
SN74LS157DR ,Quadruple 2-Line To 1-Line Data Selectors/Multiplexers


SN74ABT623-SN74ABT623DBR-SN74ABT623DWR-SN74ABT623N
Octal Bus Transceivers With 3-State Outputs
Latch-Up Performance Exceeds 500 mA PerJEDEC Standard JESD-17 Typical VOLP (Output Ground Bounce) < 1 V
at VCC = 5 V, TA = 25°C
High-Drive Outputs (–32-mA IOH, 64-mA IOL) Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK),
Ceramic Flat (W) Package, and Plastic (N)
and Ceramic (JT) DIPs
description

The SN54ABT623A and SN74ABT623 bus
transceivers are designed for asynchronous
communication between data buses. The
control-function implementation allows for
maximum flexibility in timing. The SN54ABT623A
and SN74ABT623 provide true data at their
outputs.
These devices allow data transmission from the
A bus to the B bus or from the B bus to the A bus,
depending on the logic levels at the output-enable
(OEAB and OEBA) inputs.
The output-enable inputs can be used to disable the device so that the buses are effectively isolated. The
dual-enable configuration gives the transceivers the capability of storing data by simultaneously enabling OEAB
and OEBA. Each output reinforces its input in this configuration. When both OEAB and OEBA are enabled and
all other data sources to the two sets of bus lines are at high impedance, both sets of bus lines (16 total) remain
at their last states.
To ensure the high-impedance state during power up or power down, OEBA 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.
OEAB should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by
the current-sourcing capability of the driver.
The SN54ABT623A is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74ABT623 is characterized for operation from –40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SN54ABT623A... FK PACKAGE
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GNDA1OEABB6OEBA
GND
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