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參數資料
| 型號： | 522982D |
| 英文描述： | IC-OFFLINE SWITCHING REGULATOR |
| 中文描述： | 集成電路離線開關穩壓器 |
| 文件頁數： | 1/8頁 |
| 文件大?。?/td> | 216K |
| 代理商： | 522982D |
1
LTC1483
Ultra-Low Power RS485 Low EMI
Transceiver with Shutdown
S
FEATURE
D
U
ESCRIPTIO
The LTC
1483 is an ultra-low power differential line trans-
ceiver designed for data transmission standard RS485
applications with extended common-mode range (–7V to
12V). It will also meet the requirements of RS422. The
LTC1483 features output drivers with controlled slew rate,
decreasing the EMI radiated from the RS485 lines, and
improving signal fidelity with misterminated lines. 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
μ
A while operating and less than 1
μ
A 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. I/O pins are protected against multiple
ESD strikes of over
±
10kV.
The LTC1483 is fully specified over the commercial and
extended industrial temperature range and is available in
8-pin DIP and SO packages.
I
Low Power: I
CC
= 120
μ
A Max with Driver Disabled
I
I
CC
= 500
μ
A Max with Driver Enabled, No Load
I
1
μ
A Quiescent Current in Shutdown Mode
I
Controlled Slew Rate Driver for Reduced EMI
I
Single 5V Supply
I
Drivers/Receivers Have
±
10kV ESD Protection
I
–7V to 12V Common-Mode Range Permits
±
7V
Ground Difference Between Devices on the Data Line
I
Thermal Shutdown Protection
I
Power Up/Down Glitch-Free Driver Outputs Permit
Live Insertion or Removal of Transceiver
I
Driver Maintains High Impedance in Three-State
or with the Power Off
I
Up to 32 Transceivers on the Bus
I
Pin Compatible with the LTC485
I
Battery-Powered RS485/RS422 Applications
I
Low Power RS485/RS422 Transceiver
I
Level Translator
U
S
A
O
PPLICATI
U
A
O
PPLICATI
TYPICAL
V
CC1
GND1
R
RO1
RE1
DE1
DI1
D
V
CC2
GND2
R
RO2
RE2
DE2
DI2
D
R
TERM
R
TERM
LTC1483 TA01
RO
A – B
DI
1483 TA02
, LTC and LT are registered trademarks of Linear Technology Corporation.
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