The DS1488N is a quad line driver which converts standard TTL input logic levels through one stage of inversion to output levels which meet EIA Standard RS-232D and CCITT Recommendation V.24.
Current limited output: ±10 mA typ.
Power-off source impedance: 300W min
Simple slew rate control with external capacitor
Flexible operating supply range
Inputs are TTL/LS compatible
Datasheet Available:National DS1488N
14 pin DIP. Manufactured by National.