ML145406

www.DataSheet4U.com ML145406 Driver/Receiver EIA 232–E and CCITT V.28 (Formerly RS–232–D) Legacy Device: Motorola MC145406 The ML145406 is a silicon–gate CMOS IC that combines three drivers and three receivers to fulfill the electrical specifications of standards EIA 232–E and CCITT V .28. The drivers feature true TTL input compatibility, slew–rate–limited output, 300–Ω power–off source impedance, and output typically switching to within 25% of the supply rails. The receivers can handle up to ±25 V while presenting 3 to 7 kΩ impedance. Hysteresis in the receivers aids reception of noisy signals. By combining both drivers and receivers in a single CMOS chip, the ML145406 provides efficient, low–power solutions for EIA 232–E and V .28 applications. This device offers the following performance features: Operating Temperature Range = TA –40° to +85°C Drivers ± 5 V to ±12 V Supply Range 300–Ω Power–Off Source Impedance Output Current Limiting TTL Compatible Maximum Slew Rate = 30 V/µs Receivers ± 25 V Input Voltage Range When VDD = 12 V , VSS = – 12 V 3 to 7 kΩ Input Impedance Hysteresis on Input Switchpoint BLOCK DIAGRAM VDD RECEIVER VDD VCC 15 k + – VSS 1.0 V Rx2 1.8 V HYSTERESIS VDD Rx3 DRIVER VCC 300 Tx LEVEL SHIFT + – 1.4 V DI Tx3 VSS 7 D 10 DI3 GND 6 R 11 DO3 Tx2 DO VCC VDD Rx1 Tx1 1 2 3 4 5 R D R D 16 15 14 13 12 VCC DO1 DI1 DO2 DI2 P DIP 16 = EP PLASTIC CASE 648 16 1 16 1 SO 16W = -5P SOG CASE 751G CROSS REFERENCE/ORDERING INFORMATION LANSDALE PACKA...