QUADRUPLE FUTUREBUS TRANSCEIVER
SLLS034B – JANUARY 1988 – REVISED MAY 1995
D High-Speed Quadruple Transceiver
D Meets or Exceeds Requirements of IEEE
Std. 896.1 – 1987
D Drives Load Impedances as Low as 10 Ω
D High-Speed Advanced Low-Power Schottky
20 BG GND
19 BUS GND
D Low Power Dissipation . . . 81 mW Max per
D High-Impedance PNP Inputs
D BTL™ Logic Level 1-V Bus Swing Reduces
D Low Bus-Port Capacitance
16 BUS GND
13 BUS GND
D Power-Up/Power-Down Protection
D Open-Collector Driver Outputs Allows
D Multiple Bus Channel Ground Returns to
Reduce Channel Noise Interference
D Designed to be a Faster, Lower Power
Functional Equivalent of the National
3 2 1 20 19
The SN75ALS053 is a four-channel, monolithic,
9 10 11 12 13
high-speed, advanced low-power Schottky de-
vice designed for two-way data communication
in a densely populated backplane. The
SN75ALS053 has independent driver input (Dn)
and receiver output (Rn) pins and separate driver
and receiver disables. This transceiver is designed for use in high-speed bus systems and is similar to the
SN75ALS057 transceiver except that the trapezoidal feature has been eliminated to speed up the propagation
These transceivers feature open-collector driver outputs, each with a series Schottky diode to reduce capacitive
loading to the bus. By using a 2-V pullup on the bus, the output signal swing will be approximately 1 V, which
reduces the power necessary to drive the bus load capacitance. The driver outputs are capable of driving an
equivalent dc load of as low as 10 Ω.
The receivers have a precision threshold set by an internal bandgap reference to give accurate input thresholds
over VCC and temperature variations.
These transceivers are compatible with Backplane Transceiver Logic (BTL™) technology at significantly
reduced power dissipation per channel.
The SN75ALS053 is characterized for operation from 0° 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.
BTL and DS3893 are trademarks of National Semiconductor Corporation.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1995, Texas Instruments Incorporated
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