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ST3293BDR Datasheet

  • ST3293BDR

  • RS-422 HIGH SPEED TRANSCEIVER WITH DIGITAL EMPHASIS

  • 11頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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ST3293
RS-422 HIGH SPEED TRANSCEIVER
WITH DIGITAL EMPHASIS
s
s
s
s
s
FULL DUPLEX COMMUNICATIONS DEVICE
RS-422
PROGRAMMABLE EMPHASIS INCREASES
THE DISTANCE AND DATA RATE
HIGH SPEED: DATA RATE UP TO 25Mbps
-7V TO 7V COMON-MODE INPUT VOLTAGE
RANGE
LVTTL LOGIC INPUT THRESHOLDS
SOP
DESCRIPTION
The ST3293 is a high-speed RS-422 transceiver
with an emphasis circuitry on the driver which
allows reliable long distance communication at
high data rate by reducing inter symbolic
interference. The differential amplitude of the
ST3293 is digitally programmable in 7 steps
through 3 control pins. The emphasis reduces the
inter symbolic interference by increasing the
signal amplitude under the micro control and
counteracting the effects of the cable with the
varying data stream. The ST3293 is a full duplex
device that operates from a single +5V supply. It
ORDERING CODES
Type
ST3293BD
ST3293BDR
Temperature
Range
-40 to 85 擄C
-40 to 85 擄C
Package
features driver output short circuit current limiting
and an open circuit fail-safe receiver input. The PE
input can be used as an emphasis enable. The PE
held LOW disable the emphasis instead set to
HIGH enable the emphasis with the configuration
on C0, C1 and C2 when DI change logic level. The
DI input can direct drive the outputs with a fixed
emphasis or without emphasis as shown in the
timing diagram.
Comments
50 parts per tube / 20 tube per box
2500 parts per reel
SO-14 (Tube)
SO-14 (Tape & Reel)
January 2003
1/11

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