(Hong Kong)
Product Summary
The LTC490IS8#TR is a low power differential bus/line transceiver designed for multipoint data transmission standard RS485 applications with extended common-mode range (12V to –7V). The LTC490IS8#TR also meets the requirements of RS422. The CMOS design offers significant power savings over its bipolar counterpart without sacrificing ruggedness against overload or ESD damage. 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 applications of the LTC490IS8#TR are (1)low power RS485/RS422 receivers; (2)level translator.
Parametrics
LTC490IS8#TR absolute maximum ratings: (1)Supply Voltage (VCC): 12V; (2)Driver Input Currents: –25mA to 25mA; (3)Driver Input Voltages: –0.5V to VCC +0.5V; (4)Driver Output Voltages: ±14V; (5)Receiver Input Voltages: ±14V; (6)Receiver Output Voltages: –0.5V to VCC +0.5V; (7)Operating Temperature Range: 0°C to 70°C; (8)Storage Temperature Range: –65°C to 150°C; (9)Lead Temperature (Soldering, 10 sec): 300°C.
Features
LTC490IS8#TR features: (1)Low Power: ICC = 300mA Typical; (2)Designed for RS485 or RS422 Applications; (3)Single 5V Supply; (4)–7V to 12V Bus Common-Mode Range Permits ±7V Ground Difference BetweeDevices othe Bus; (5)Thermal ShutdowProtection; (6)Power-Up/DowGlitch-Free Driver Outputs Permit Live Insertioor Removal of Package; (7)Driver Maintains High Impedance with the Power Off; (8)Combined Impedance of a Driver Output and Receiver Allows up to 32 Transceivers othe Bus; (9)70mV Typical Input Hysteresis; (10)28ns Typical Driver PropagatioDelays with 5ns Skew; (11)PiCompatible with the SN75179.
Diagrams
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 LTC490IS8#TR |
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IC TXRX RS485 LOW POWER 8SOIC |
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LTC490IS8#TRPBF |
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IC TXRX RS485 LOW POWER 8-SOIC |
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