Quad Line Driver
DS1489/DS1489A Quad Line Receiver
July 2002
DS1489/DS1489A Quad Line Receiver
General Description
The DS1489/DS1489A a...
Description
DS1489/DS1489A Quad Line Receiver
July 2002
DS1489/DS1489A Quad Line Receiver
General Description
The DS1489/DS1489A are quad line receivers designed to interface data terminal equipment with data communications equipment. They are constructed on a single monolithic silicon chip. These devices satisfy the specifications of EIA Standard RS-232D. The DS1489/DS1489A meet and exceed the specifications of MC1489/MC1489A and are pin-for-pin replacements.
Features
n n n n n Four separate receivers per package Programmable threshold Built-in input threshold hysteresis “Fail safe” operating mode: high output for open inputs Inputs withstand ± 30V
Schematic and Connection Diagrams
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(1⁄4 of unit shown) DS1489: RF = 10k DS1489A: RF = 2k
Dual-In-Line or Small-Out Line Package
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Top View Order Number DS1489M, DS1489MX, DS1489N, DS1489AM, DS1489AMX or DS1489AN See NS Package Number M14A or N14A
© 2002 National Semiconductor Corporation
DS005777
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DS1489/DS1489A
AC Test Circuit and Voltage Waveforms
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FIGURE 1.
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2
DS1489/DS1489A
Absolute Maximum Ratings
(Note 2)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage Input Voltage Range Output Load Current Power Dissipation (Note 3) Operating Temperature Range Storage Temperature Range 10V Maxim...
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