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SN74BCT25244NT , 25-ohm OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
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SN74BCT25244DW
Octal 25-Ohm Buffers/Drivers With 3-State Outputs
R = 0) Designed to Facilitate Incident-Wave
Switching for Line Impedances of 25 W
or Greater Distributed VCC and GND Pins Minimize
Noise Generated by the Simultaneous
Switching of Outputs Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK) and Flatpacks (W), and
Standard Plastic and Ceramic 300-mil DIPs
(JT, NT)
descriptionThese 25-W octal buffers and line drivers are
designed specifically to improve both the
performance and density of 3-state memory
address drivers, clock drivers, and bus-oriented
receivers and transmitters.
These buffers are capable of sinking 188-mA IOL,
which facilitates switching 25-W transmission
lines on the incident wave. The distributed VCCand GND pins minimize switching noise for more
reliable system operation.
When the output-enable (1OE and 2OE) inputs
are low, the device transmits data from the
A inputs to the Y outputs. When 1OE and 2OE are
high, the outputs are in the high-impedance state.
The SN54BCT25244 is characterized for
operation over the full military temperature range
of –55°C to 125°C. The SN74BCT25244 is
characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each buffer/driver)1Y2
1Y3
GND
1Y4
2Y1
GND
2Y2
2Y3
GND
2Y4
1A2
VCC
1A3
1A4
2A1
2A2
VCC
2A3
2A4
2OE
2OE
2Y4
GND
2Y3
2Y2
GND
1A3
VCC
1A2
1A1
1OE
1Y1
GND
1Y21Y3
GND
1Y42Y1
1A42A12A2NC
2A32A4
SN54BCT25244... FK PACKAGE
(TOP VIEW)NC – No internal connection
