參數(shù)資料
型號(hào)： ST491A
廠(chǎng)商： 意法半導(dǎo)體
英文描述： LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER
中文描述： 低電源高速RS-485/RS-422收發(fā)器
文件頁(yè)數(shù)： 1/12頁(yè)
文件大?。?/td> 269K
代理商： ST491A
1/12
July 2003
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LOW SUPPLY CURRENT: 5mA MAX
DESIGNED FOR RS485 INTERFACE
APPLICATIONS
-7 TO 12 COMMON MODE INPUT VOLTAGE
RANGE
70mV TYPICAL INPUT HYSTERESIS
DESIGNED FOR 25Mbps OPERATION
OPERATE FROM SINGLE 5 SUPPLY
±4kV ESD PROTECTION
CURRENT LIMITING AND THERMAL
SHUTDOWN FOR DRIVER OVERLOAD
PROTECTION
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DESCRIPTION
The ST491A is a low power transceiver for
RS-485 and RS-422 communications. The device
contains one driver and one receiver in full duplex
configuration. The ST491A draws 5mA (typ.) of
supply current when unloaded and operates from
a single 5V supply.
Driver is short-circuit current limited and is
protected against excessive power dissipation by
thermal shutdown circuitry that place the driver
outputs into a high-impedance state. The receiver
input has a fail-safe feature that guarantees a
logic high output if both inputs are open circuit.
ORDERING CODES
Type
Temperature
Range
Package
Comments
ST491ACN
ST491ABN
ST491ACD
ST491ABD
ST491ACDR
ST491ABDR
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
DIP-14
DIP-14
SO-14 (Tube)
SO-14 (Tube)
SO-14 (Tape & Reel)
SO-14 (Tape & Reel)
25parts per tube / 40tube per box
25parts per tube / 40tube per box
50parts per tube / 20tube per box
50parts per tube / 20tube per box
2500 parts per reel
2500 parts per reel
ST491A
LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER
DIP
SOP
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST491A_07 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Low power high speed RS-485/RS-422 transceiver
ST491AB 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:LOW POWER HIGH SPEED RS-485/RS422 TRANSCEIVER
ST491ABD 功能描述:總線(xiàn)收發(fā)器 Hi-Spd Lo Pwr Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類(lèi)型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類(lèi)型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
ST491ABDR 功能描述:總線(xiàn)收發(fā)器 Hi-Spd Lo Pwr Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類(lèi)型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類(lèi)型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
ST491ABN 功能描述:總線(xiàn)收發(fā)器 Hi-Spd Lo Pwr Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類(lèi)型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類(lèi)型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
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