MC145406

Philips Semiconductors Linear Products Product specification EIA-232-D/V.28 driver/receiver MC145406 DESCRIPTION The MC145406 is a silicon-gate CMOS IC that combines 3 drivers and 3 receivers to fulfill the electrical specifications of standards EIA-232-D and CCITT V.28. The drivers feature true TTL input compatibility, slew-rate limited output, 300Ω power-off source impedance, and output typically switching to within 25% of the supply rails. The receivers can handle up to +25V while presenting 3 to 7kΩ impedance. Hysteresis in the receiver aids reception of noisy signals. By combining both drivers and receivers in a single CMOS chip, the MC145406 provides efficient, low-power solutions for EIA-232-D and V.28 applications. PIN CONFIGURATION D and N Packages VDD RX1 TX1 RX2 TX2 RX3 TX3 1 2 3 4 5 6 7 8 R D R D R D 16 15 14 13 12 11 10 9 VCC DO1 DI1 DO2 DI2 DO3 DI3 GND APPLICATIONS Modem interface Voice/data telephone interface Lap-top computers UART interface FEATURES VSS NOTE: D = Driver R = Receiver Drivers +5 to +12V supply range 300Ω power-off source impedance Output current limiting TTL compatible ORDERING INFORMATION DESCRIPTION 16-Pin Plastic Dual In-Line (DIP) Package 16-Pin Small Outline Large (SOL) Package Maximum slew rate = 30V/µs Receivers +25V input voltage range over the full supply range 3 to 7kΩ input impedance Hysteresis on input switchpoint General Very low supply currents for long battery life Operation is indepen...