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MC145407 Dataheets PDF



Part Number MC145407
Manufacturers Motorola
Logo Motorola
Description 5 Volt Only Driver / Recevier
Datasheet MC145407 DatasheetMC145407 Datasheet (PDF)

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–board 20 kHz oscillator and four inexpen.

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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–board 20 kHz oscillator and four inexpensive external electrolytic capacitors. The three drivers and three receivers of the MC145407 are virtually identical to those of the MC145406. Therefore, for applications requiring more than three drivers and/or three receivers, an MC145406 can be powered from an MC145407, since the MC145407 charge pumps have been designed to guarantee ± 5 V at the output of up to six drivers. Thus, the MC145407 provides a high–performance, low–power, stand–alone solution or, with the MC145406, a + 5 V only, high–performance two–chip solution. Drivers • ± 7.5 V Output Swing • 300 Ω Power–Off Impedance • Output Current Limiting • TTL and CMOS Compatible Inputs • Slew Rate Range Limited from 4 V/µs to 30 V/µs Receivers • + 25 V Input Range • 3 to 7 kΩ Input Impedance • 0.8 V Hysteresis for Enhanced Noise Immunity Charge Pumps • + 5 V to ± 10 V Dual Charge Pump Architecture • Supply Outputs Capable of Driving Three On–Chip Drivers and Three Drivers on the MC145406 Simultaneously • Requires Four Inexpensive Electrolytic Capacitors • On–Chip 20 kHz Oscillator 20 1 P SUFFIX PLASTIC DIP CASE 738 20 1 DW SUFFIX SOG PACKAGE CASE 751D ORDERING INFORMATION MC145407P MC145407DW Plastic DIP SOG Package PIN ASSIGNMENT C2+ GND C2– VSS Rx1 Tx1 Rx2 Tx2 Rx3 Tx3 1 2 3 4 5 6 7 8 9 10 20 C1+ 19 18 17 16 VCC C1– VDD DO1 R D 15 DI1 R 14 DO2 D 13 DI2 R 12 DO3 D 11 DI3 D = DRIVER R = RECEIVER This document contains information on a new product. Specifications and information herein are subject to change without notice. REV 1 10/95 © Motorola, Inc. 1995 MOTOROLA MC145407 1 FUNCTION DIAGRAM CHARGE PUMPS OSC VCC C3 + VDD C1 + C1 – C1 + RECEIVER VDD * Rx 5.4 k VSS 15 kΩ + – 1.0 V VDD VCC DO Tx 300 Ω + C2 + C2 – C2 VOLTAGE DOUBLER VOLTAGE INVERTER GND + C4 VSS DRIVER VDD VCC LEVEL SHIFT + – DI 1.4 V * Proctection circuit 1.8 V VSS MC145407 2 MOTOROLA MAXIMUM RATINGS (Voltage polarities referenced to GND) Rating DC Supply Voltages Input Voltage Range Rx1 – Rx3 Inputs DI1 – DI3 Inputs DC Current per Pin Power Dissipation Operating Temperature Range Storage Temperature Range I PD TA Tstg Symbol VCC VIR VSS – 15 to VDD + 15 – 0.5 to (VCC + 0.5) ± 100 1 – 40 to + 85 – 85 to + 150 mA W °C °C Value – 0.5 to + 6.0 Unit V V This device contains protection circuitry to protect the inputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit. For proper operation, it is recommended that the voltages at the DI and DO pins be constrained to the range GND ≤ VDI ≤ VCC and GND ≤ VDO ≤ V CC. Also, the voltage at the Rx pin should be constrained to (VSS – 15 V) ≤ VRx1 – Rx3 ≤ (VDD + 15 V), and Tx should be constrained to VSS ≤ VTx1 – Tx3 ≤ VDD. Unused inputs must always be tied to appropriate logic voltage level (e.g., GND or VCC for DI, and GND for Rx). DC ELECTRICAL CHARACTERISTICS (All polarities referenced to GND = 0 V; C1, C2, C3, C4 = 10 µF; TA = – 40 to + 85°C) Parameter DC Supply Voltage Quiescent Supply Current (Outputs unloaded, inputs low) Output Voltage Iload = 0 mA Iload = 5 mA Iload = 10 mA Iload = 0 mA Iload = 5 mA Iload = 10 mA Symbol VCC ICC VDD Min 4.5 — 8.5 7.5 6 – 8.5 – 7.5 –6 Typ 5 1.2 10 9.5 9 – 10 – 9.2 – 8.6 Max 5.5 3.0 11 — — –11 — — Unit V mA V VSS RECEIVER ELECTRICAL SPECIFICATIONS (Voltage polarities referenced to GND = 0 V; VCC = + 5 V ± 10%; C1, C2, C3, C4 = 10 µF; TA = – 40 to + 85°C) Characteristic Input Turn–on Threshold VDO1 – DO3 = VOL Input Turn–off Threshold VDO1 – DO3 = VOH Input Threshold Hysteresis (Von – Voff) Input Resistance High–Level Output Voltage VRx1 – Rx3 = – 3 V to – 25 V IOH = – 20 µA IOH = – 1 mA Low–Level Output Voltage VRx1 – Rx3 = + 3 V to + 25 V IOL = + 20 µA IOL = + 1.6 mA Rx1 – Rx3 Rx1 – Rx3 Rx1 – Rx3 Rx1 – Rx3 DO1 – DO3 Symbol Von Voff Vhys Rin VOH VCC – 0.1 VCC – 0.7 DO1 – DO3 VOL — — 0.01 0.5 0.1 0.7 — 4.3 — — V Min 1.35 0.75 0.6 3.0 Typ 1.8 1.0 0.8 5.4 Max 2.35 1.25 — 7.0 Unit V V V kΩ V MOTOROLA MC145407 3 DRIVER ELECTRICAL SPECIFICATIONS (Voltage polarities referenced to GND = 0 V: VCC = +5 V ± 10%; C1, C2, C3, C4 = 10 µF; TA = –40 to +85°C) Characteristic Digital Input Voltage Logic 0 Logic 1 Input Current GND ≤ VDI1 – DI3 ≤ VCC Output High Voltage VDI1 – DI3 = Logic 0, RL = 3.0 kΩ Output Low Voltage VDI1 – DI3 = Logic 1, RL = 3.0 kΩ Off Source Impedance (Figure 1) Output Short–Circuit Current VCC = + 5.5 V DI1 – DI3 VIL .


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