LT1281ACN#PBF

LT1281A is a dual RS232 driver/receiver pair with integral charge pump to generate RS232 voltage levels from a single 5V supply. This circuit features rugged bipolar design to provide operating fault tolerance and ESD protection unmatched by competing CMOS designs. Using only 0.1µF external capacitors, this circuit consume only 40mW of power, and can operate to 120Kbaud even while driving heavy capacitive loads. New ESD structures on the chip allow the device to survive multiple ±10KV strikes, eliminating the need for costly TransZorbs® on the RS232 line pins. It is fully compliant with EIA RS232 standards. Driver outputs are protected from overload, and can be shorted to ground or upto ±30V without damage. During shutdown or power-off conditions, driver and receiver outputs are in a high impedance state, allowing line sharing. It is widely used in application such as portable computers, battery-powered systems, power supply generator, terminals, modems etc.

• Supply current is 8mA typical at (TA = 25°C)
• Outputs withstand ±30V without damage
• Rugged bipolar design
• Outputs assume a high impedance state when off or powered down
• Meets all RS232 specifications
• Available with or without shutdown
• Absolutely no latch-up
• Oscillator frequency is 130KHz typical
• Slew rate is 15V/µs typical at ( RL = 3K, CL = 51pF)
• Operating temperature is 0°C to 70°C, package style is 18-lead plastic WSOIC

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