LT1780CSW#PBF

LT1780CSW#PBF is a dual RS232 driver/receiver pairs with integral charge pump to generate RS232 voltage levels from a single 5V supply. 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 ±15KV air gap and ±8kV contact ESD tests per IEC 1000-4-2, eliminating the need for costly TransZorbs® on the RS232 line pins. This device is fully compliant with EIA RS232 standards. Driver outputs are protected from overload, and can be shorted to ground or up to ±30V without damage. During SHUTDOWN or power-off conditions, driver and receiver outputs are in a high impedance state, allowing line sharing. It is used in applications such as portable computers, battery-powered systems, power supply generator, terminals, modems.

• Operates from a single 5V supply, rugged bipolar design
• Outputs assume a high impedance state when off or powered down
• Meets all RS232 specifications, absolutely no latch-up
• Slew rate is 15V/µs typical at (RL = 3K, CL = 51pF)
• Propagation delay is 0.6µs typical at (output transition tHL high-to-low)
• Oscillator frequency is 130KHz typical
• Supply current (VCC) is 8mA typical at (TA = 25°C)
• Output leakage current is 10µA typical at (SHUTDOWN VOUT = ±30V)
• Operating temperature range from 0°C to 70°C
• 18-lead plastic SO package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party