(Hong Kong)
Product Summary
The LT1781CS#TR is dual RS232 driver/receiver with integral charge pump to generate RS232 voltage levels from a single 5V supply. New ESD structures on the chip allow the LT1781CS#TR to survive ±15kV air gap and ±8kV contact ESD tests per IEC 1000-4-2, eliminating the need for costly TransZorbs on the RS232 line pins.Applications of the LT1781CS#TR include: Portable Computers, Battery-Powered Systems, Power Supply Generator, Terminals, Modems.
Parametrics
LT1781CS#TR absolute maximum ratings: (1) Supply Voltage (V cc) : 6V; (2) V+: 13.2V; (3) V-: -13.2V; (4) Input Voltage: Driver: V+ to V-, Receiver: -30V to 30V, ON/OFF: -0.3V to 12V; (5) Output Voltage: Driver: V+ - 30V to V- +30V, Receiver: -0.3V to Vcc +0.3V; (6) Short-Circuit Duration: V+: 30 sec, v-: 30 sec; (7) Driver Output: Indefinite; (8) Receiver Output: Indefinite; (9) Operating Temperature Range: 0°C to 70°C; (10) Storage Temperature Range: -65°C to 150°C; (11) Lead Temperature (Soldering, 10 sec) : 300°C.
Features
LT1781CS#TR features: (1) 10mA Max Supply Current; (2) ESD Protection to IEC 1000-4-2 Level 4 ±15kV Air Gap, ±8kV Contact; (3) Uses Small Capacitors: 0.1μF; (4) 120kBaud Operation for Rl=3k, Cl=2500pF; (5) 250kBaud Operation for Rl=3k, Cl=1000pF; (6) Outputs Withstand ±30V Without Damage; (7) CMOS Comparable Low Power: 40mW; (8) Operates from a Single 5V Supply; (9) Rugged Bipolar Design; (10) Outputs Assume a High Impedance State When Off or Powered Down; (11) Meets All RS232 Specifications; (12) Available With or Without Shutdown; (13) Absolutely No Latch-up.
Diagrams
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 LT1781CS#TR |
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IC TXRX 5V RS232 DUAL LP 16SOIC |
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LT1781CS#TRPBF |
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IC DVR/RCVR 5V RS232 DUAL 16SOIC |
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