Order this document by MC1489/D
MC1489, A
Quad Line Receivers
The MC1489 monolithic quad line receivers are designed to interface data
terminal equipment with data communications equipment in conformance
with the specifications of EIA Standard No. EIA–232D.
• Input Resistance – 3.0 k to 7.0 kΩ
•
•
•
QUAD MDTL
LINE RECEIVERS
EIA–232D
Input Signal Range – ± 30 V
Input Threshold Hysteresis Built In
Response Control
a) Logic Threshold Shifting
b) Input Noise Filtering
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 646
ORDERING INFORMATION
Operating
Temperature Range
Device
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
Package
MC1489P, AP
Plastic
TA = 0 to + 75°C
MC1489D, AD
SO–14
PIN CONNECTIONS
Input A
Interconnecting
Cable
12 Response
Control D
4
11 Output D
5
10 Input C
6
9
Response
Control C
Ground
MDTL Logic Output
3
Output B
MDTL Logic Input
13 Input D
Output A
Line Receiver
MC1489
2
Response
Control B
Interconnecting
Cable
14 VCC
Input B
Line Driver
MC1488
1
Response
Control A
Simplified Application
7
8
Output C
Representative Schematic Diagram
(1/4 of Circuit Shown)
14
VCC
9.0 k
5.0 k
1.7 k
RF
Response Control 2
3 Output
3.8 k
Input 1
MC1489
RF
MC1489A
6.7 kΩ
10 k
1.6 kΩ
7 GND
© Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
Rev 5
1
