(Hong Kong)
Product Summary
The LTC491IS#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). It also meets the requirements of RS422. The LTC491IS#TR design offers significant power savings over its bipolar counterpart without sacrificing ruggedness against overload or ESD damage. 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 applications of the LTC491IS#TR are (1)low power RS485/RS422 receivers; (2)level translator.
Parametrics
LTC491IS#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
LTC491IS#TR features: (1)Low Power: ICC = 300μA Typical; (2)Designed for RS485 or RS422 Applications; (3)Single +5V Supply; (4)–7V to +12V Bus CommoMode 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 iThree-State or 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 SN75180.
Diagrams
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IC TXRX RS485 LOW POWER 14-SOIC |
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LTC491IS#TRPBF |
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IC TXRX RS485 LOW POWER 14-SOIC |
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