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Partno Mfg Dc Qty AvailableDescript
SN75138TIN/a1500avaiQuadruple Bus Transceiver
SN75138NTIN/a1500avaiQuadruple Bus Transceiver
SN75138NSRTIN/a1221avaiQuadruple Bus Transceiver


SN75138 ,Quadruple Bus Transceivermaximum ratings over operating free-air temperature (unless otherwise noted)Supply voltage, V (see ..
SN75138N ,Quadruple Bus Transceivermaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
SN75138NSR ,Quadruple Bus Transceivermaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
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SN75140P ,Dual Line Receivermaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
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SN75138-SN75138N-SN75138NSR
Quadruple Bus Transceiver
TTL-Compatible Driver and Strobe InputsWith Clamp Diodes High-Speed Operation 100-mA Open-Collector Driver Outputs Four Independent Channels TTL-Compatible Receiver Output

description

The SN55138 and SN75138 quadruple bus
transceivers are designed for two-way data
communication over single-ended transmission
lines. Each of the four identical channels consists
of a driver with TTL inputs and a receiver with a
TTL output. The driver open-collector output is
designed to handle loads up to 100-mA open
collector. The receiver input is internally
connected to the driver output, and has a high
impedance to minimize loading of the
transmission line. Because of the high driver-
output current and the high receiver-input
impedance, a very large number (typically
hundreds) of transceivers may be connected to a
single data bus.
The receiver design also features a threshold of 2.3 V (typical), providing a wider noise margin than would be
possible with a receiver having the usual TTL threshold. A strobe turns off all drivers (high impedance) but does
not affect receiver operation. These circuits are designed for operation from a single 5-V supply and include a
provision to minimize loading of the data bus when the power-supply voltage is zero.
The SN55138 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN75138 is characterized for operation from 0°C to 70°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.
SN55138... FK PACKAGE
(TOP VIEW)
GNDNC3R
GND
NC – No internal connection
GND
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