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PDF DS1489A Data sheet ( Hoja de datos )
| Número de pieza | DS1489A | |
| Descripción | Quad Line Driver | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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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 ex-
ceed the specifications of MC1489/MC1489A and are
pin-for-pin replacements.
Features
n Four separate receivers per package
n Programmable threshold
n Built-in input threshold hysteresis
n “Fail safe” operating mode: high output for open inputs
n Inputs withstand ±30V
Schematic and Connection Diagrams
www.DataSheet4U.com
(1⁄4 of unit shown)
DS1489: RF = 10k
DS1489A: RF = 2k
00577701
Dual-In-Line or Small-Out Line Package
00577702
Top View
Order Number DS1489M, DS1489MX, DS1489N, DS1489AM, DS1489AMX or DS1489AN
See NS Package Number M14A or N14A
© 2002 National Semiconductor Corporation DS005777
www.national.com
1 page  
Typical Application Information
*Optional for noise filtering.
Noise Filter
See Figure 7
www.DataSheet4U.com
Applications Using the Response Control Pin
00577705
Threshold Shift
See Figures 3, 4
Noise Filter and Threshold Shift
See Figures 3, 4, 7
00577713
00577714
Application of DS1488, DS1489A and UART
00577715
00577716
5
www.national.com
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet DS1489A.PDF ] | |
Hoja de datos destacado
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| DS1489A | DS1489/DS1489A Quad Line Receiver (Rev. D) | Texas Instruments |
| DS1489A | Quad Line Driver | National Semiconductor |
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