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LTC1481IN8 Datasheet

  • LTC1481IN8

  • Ultra-Low Power RS485 Transceiver with Shutdown

  • 8頁

  • LINER

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LTC1481
Ultra-Low Power
RS485 Transceiver
with Shutdown
FEATURES
s
s
s
s
s
s
s
DESCRIPTIO
s
s
s
s
s
s
Low Power: I
CC
= 120碌A(chǔ) Max with Driver Disabled
I
CC
= 500碌A(chǔ) Max with Driver Enabled, No Load
Drivers/Receivers Have
鹵10kV
ESD Protection
1碌A(chǔ) Quiescent Current in Shutdown Mode
High Speed: Up to 2.5Mbits/s Data Rate
Single 5V Supply
鈥?7V to 12V Common-Mode Range Permits
鹵7V
Ground Difference Between Devices on the Data Line
Thermal Shutdown Protection
Power Up/Down Glitch-Free Driver Outputs Permit
Live Insertion or Removal of Transceiver
Driver Maintains High Impedance in Three-State
or with the Power Off
Up to 32 Transceivers on the Bus
30ns Typical Driver Propagation Delays
with 5ns Skew
Pin Compatible with the LTC485
The LTC
廬
1481 is an ultra-low power differential line trans-
ceiver designed for data transmission standard RS485
applications. It will also meet the requirements of RS422.
The CMOS design offers significant power savings over its
bipolar counterparts without sacrificing ruggedness against
overload or ESD damage. Typical quiescent current is only
80碌A(chǔ) while operating and less than 1碌A(chǔ) in shutdown.
The driver and receiver feature three-state outputs, with
the driver outputs maintaining high impedance over the
entire common-mode range. Excessive power dissipation
caused by bus contention or faults is prevented by a
thermal shutdown circuit which forces the driver outputs
into a high impedance state. The receiver has a fail-safe
feature which guarantees a high output state when the
inputs are left open.
The LTC1481 is fully specified over the commercial and
extended industrial temperature range and is available in
8-pin DIP and SO packages.
APPLICATI
s
s
s
S
Battery-Powered RS485/RS422 Applications
Low Power RS485/RS422 Transceiver
Level Translator
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATI
RO1
RE1
DE1
DI1
D
R
Supply Current vs Temperature
350
V
CC1
SUPPLY CURRENT (碌A(chǔ))
300
Rt
GND1
250
DRIVER ENABLED
200
150
100
50
DRIVER DISABLED
Rt
RO2
RE2
DE2
DI2
D
GND2
LTC1481 鈥?TA01
R
V
CC2
0
鈥?0 鈥?5
U
THERMAL SHUTDOWN
WITH DRIVER ENABLED
0
25 50 75 100 125 150 175
TEMPERATURE (擄C)
1481 TA02
UO
UO
1

LTC1481IN8 產(chǎn)品屬性

  • LTC1481

  • 50

  • 集成電路 (IC)

  • 接口 - 驅(qū)動器，接收器，收發(fā)器

  • -

  • 收發(fā)器

  • 1/1

  • RS422，RS485

  • 4.75 V ~ 5.25 V

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 8-PDIP

  • 管件

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