Description
DS1489/DS1489A Quad Line Receiver July 2002 DS1489/DS1489A Quad Line Receiver General .
The DS1489/DS1489A are quad line receivers designed to interface data terminal equipment with data communications equipment.
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 =
Applications
* Using the Response Control Pin Noise Filter See Figure 7 Threshold Shift See Figures 3, 4 Noise Filter and Threshold Shift See Figures 3, 4, 7
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Application of DS1488, DS1489A and UART
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DS1489/DS1489A
Physical Dimensions