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ST485C データシート(PDF) 1 Page - STMicroelectronics

部品番号 ST485C
部品情報  Low power RS-485/RS-422 transceiver
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST485C データシート(HTML) 1 Page - STMicroelectronics

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February 2008
Rev 15
1/19
19
ST485B
ST485C
Low power RS-485/RS-422 transceiver
Features
Low quiescent current: 300 µA
Designed for RS-485 interface application
-7 V to 12 V common mode input voltage range
Driver maintains high impedance in 3-state or
with the power OFF
70 mV typical input hysteresis
30 ns propagation delay, 5 ns skew
Operate from a single 5 V supply
Current limiting and thermal shutdown for
driver overload protection
Allows up to 64 transceivers on the bus
Description
The ST485 is al low power transceiver for RS-485
and RS-422 communication. Each part contains
one driver and one receiver.
This transceiver draw 300 µA (typ.) of supply
current when unloaded or fully loaded with
disabled drivers.
It operates from a single 5 V supply.
Driver is short-circuit current limited and is
protected against excessive power dissipation by
thermal shutdown circuitry that placed the driver
outputs into a high-impedance state.
The ST485 is designed for bi-directional data
communications on multipoint bus transmission
line (half-duplex applications).
The ST485 is available in three temperature
range: commercial (0 °C to 70 °C), industrial (-40
°C to 85 °C) and automotive (-55 °C to 125 °C).
DIP-8
SO-8
Table 1.
Device summary
Order code
Temperature range
Package
Packaging
ST485CN
0 to 70 °C
DIP-8
50 parts per tube / 40 tube per box
ST485BN
-40 to 85 °C
DIP-8
50 parts per tube / 40 tube per box
ST485CDR
0 to 70 °C
SO-8 (tape and reel)
2500 parts per reel
ST485BDR
-40 to 85 °C
SO-8 (tape and reel)
2500 parts per reel
www.st.com


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