MC145407 Datasheet (Motorola) - 5 Volt Only Driver / Recevier

MC145407, 5 Volt Only Driver / Recevier

17 19 VDD VCC 15 DI1 Tx1 6 VCC Digital Power Supply (Pin 19) The digital supply pin, which is connected to the logic power supply.

This pin should have a 0.33 µ F capacitor to ground.

GND Ground (Pin 2) 13 DI2 Tx2 8 Vin = ± 2 V 11 DI3 Tx3 10 Ground return pin is typically connected to the

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC145407/D MC145407 Advance Information 5 Volt Only Driver/Receiver EIA 232 E and CCITT V.28 The MC145407 is a silicon gate CMOS IC that combines three drivers and three receivers to fulfill the electrical specifications of EIA 232 E and CCITT V.28 while operating from a single + 5 V power supply.

A voltage doubler and inverter convert the + 5 V to ± 10 V.

This is accomplished through an on<

MC145407 Features

* A logic 1 at a DI input causes the corresponding Tx output to swing toward VSS. A logic 0 causes the output to swing toward VDD. The actual levels and slew rate achieved will depend on the output loading (RL ø CL). Figure 3. Slew Rate Characterization MOTOROLA MC145407 5 APPLICATIONS INFORMATIO