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MC145706DW

Description
5 Volt Only Driver/Receiver with an Integrated Standby Mode
File Size117KB,12 Pages
ManufacturerMotorola ( NXP )
Websitehttps://www.nxp.com
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MC145706DW Overview

5 Volt Only Driver/Receiver with an Integrated Standby Mode

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MC145705/D
MC145705
Product Preview
5 Volt Only
Driver/Receiver with an
Integrated Standby Mode
MC145706
MC145707
EIA–232–E and CCITT V.28
20
P SUFFIX
PLASTIC DIP
CASE 738
1
The MC145705/06/07 are a series of silicon–gate CMOS transceiver ICs that
fulfill the electrical specifications of EIA–232–E and CCITT V.28 while operating
from a single + 5 V power supply. These transceiver series are high
performance and low power consumption devices that are equipped with
standby and output enable function.
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 MC145705 is composed of two drivers and three receivers, the
MC145706 has three drivers and two receivers, and the MC145707 has three
drivers and three receivers. These drivers and receivers are virtually identical to
those of the MC145407.
Available Driver/Receiver Combinations
Device
MC145705
MC145706
MC145707
Drivers
2
3
3
Receivers
3
2
3
No. of Pins
20
1
DW SUFFIX
SOG PACKAGE
CASE 751D
24
1
P SUFFIX
PLASTIC DIP
CASE 724
24
20
20
24
DW SUFFIX
SOG PACKAGE
CASE 751E
1
ORDERING INFORMATION
MC145705P
MC145706P
MC145707P
MC145705DW
MC145706DW
MC145707DW
Plastic DIP
Plastic DIP
Plastic DIP
SOG Package
SOG Package
SOG Package
Drivers:
• ±
7.5 Output Swing
300
Power–Off Impedance
Output Current Limiting
TTL and CMOS Compatible Inputs
Three–State Outputs During Standby Mode
Hold Output OFF (MARK) State by TxEN Pin
Receivers:
• ±
25 V Input Range
3 to 7 kΩ Input Impedance
0.8 V Hysteresis for Enhanced Noise Immunity
Three–State Outputs During Standby Mode
Charge Pumps:
+ 5 to
±
10 V Dual Charge Pump Architecture
Supply Outputs Capable of Driving Three Drivers on the MC145403/06
Simultaneously
Requires Four Inexpensive Electrolytic Capacitors
On–Chip 20 kHz Oscillators
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
REV 1
8/95
©
Motorola, Inc. 1995
MOTOROLA
MC145705•MC145706•MC145707
1

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