ADM488 Analog Devices, ADM488 Datasheet
ADM488
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ADM488 Summary of contents
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... Data Concentration Data Multiplexers Integrated Services Digital Network (ISDN) GENERAL DESCRIPTION The ADM488 and ADM489 are low power differential line transceiver suitable for communication on multipoint bus trans- mission lines. They are intended for balanced data transmission and comply with both EIA Standards RS-485 and RS-422. Both products contains a single differential line driver and a single differential line receiver making them suitable for full duplex data transfer ...
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... ADM488/ADM489–SPECIFICATIONS Parameter DRIVER Differential Output Voltage for Complementary Output States OD Common-Mode Output Voltage for Complementary Output States OC Output Short Circuit Current (V = High) OUT Output Short Circuit Current (V = Low) OUT CMOS Input Logic Threshold Low, V CMOS Input Logic Threshold High, V ...
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... Exposure to absolute maximum ratings for extended periods of time may affect device reliability. ORDERING GUIDE Package Description 8-Lead Narrow Body (SOIC) 8-Lead Plastic DIP 14-Lead Plastic DIP (Narrow) 14-Lead Narrow Body (SOIC) 16-Lead Thin Shrink Small Outline Package (TSSOP) –3– ADM488/ADM489 Package Option SO-8 N-8 N-14 R-14 RU-16 ...
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... ADM488/ADM489 ADM488 PIN FUNCTION DESCRIPTIONS Pin Mnemonic Function 1 V Power Supply Receiver Output. When A > 200 mV high < 200 mV low Driver Input. A logic Low on DI forces Y low and Z high while a logic High on DI forces Y high and Z low ...
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... Figure 3. Driver Voltage Measurement Test Circuit 2 +1.5V V TST –1.5V Figure 4. Receiver Enable/Disable Test Circuit + DIFF –5– ADM488/ADM489 OUT OUT RE IN ...
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... ADM488/ADM489 Switching Characteristics 3V 1.5V T PLH 0V B 1/2VO SKEW +VO 90% POINT 0V 10% POINT – Figure 6. Driver Propagation Delay, Rise/Fall Timing 0V A–B T PLH RO 1.5V Figure 7. Receiver Propagation Delay 1. PHL SKEW 90% POINT A, B 10% POINT T F Figure 8. Driver Enable/Disable Timing RE 0V ...
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... OUTPUT VOLTAGE – Volts Figure 14. Driver Differential Output Voltage vs. Output Current 5MHz 30 FREQUENCY – MHz Figure 17. Radiated Emissions –7– ADM488/ADM489 0.5 1.0 1.5 4.8 5.0 OUTPUT VOLTAGE – Volts Figure 12. Driver Output Low Voltage vs. Output Current ...
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... EIA Standards RS-485 and RS-422. It con- tains a differential line driver and a differential line receiver, and is suitable for full duplex data transmission. The input impedance on the ADM488/ADM489 allowing transceivers on the differential bus. The ADM488/ADM489 operates from a single +5 V power supply ...
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... Temporary degradation or loss of function or performance that requires operator intervention or system reset. 4. Degradation or loss of function that is not recoverable due to damage. The ADM488/ADM489 has been tested under worst case con- t ditions using unshielded cables, and meets Classification 2 at severity Level 4. Data transmission during the transient condi- ...
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... Stabilizing Network) and a spectrum analyzer. The test setup is illustrated in Figure 23. The spectrum analyzer is set to scan the spectrum from 0 MHz to 30 MHz. Figure 24 shows that the level of conducted emissions from the ADM488/ ADM489 are well below the allowable limits. DUT Figure 23. Conducted Emissions Test Setup ...
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... The ADM488/ADM489 is designed for bidirectional data com- munications on multipoint transmission lines. A typical applica- tion showing a multipoint transmission network is illustrated in Figure 25 ...
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... ADM488/ADM489 8-Lead Narrow Body (SOIC) (SO-8) 0.1968 (5.00) 0.1890 (4.80 0.1574 (4.00) 0.2440 (6.20 0.1497 (3.80) 0.2284 (5.80) PIN 1 0.0688 (1.75) 0.0098 (0.25) 0.0532 (1.35) 0.0040 (0.10) 0.0500 0.0192 (0.49) SEATING 0.0098 (0.25) (1.27) 0.0138 (0.35) PLANE BSC 0.0075 (0.19) 8-Lead Plastic DIP (N-8) 0.430 (10.92) 0.348 (8.84 0.280 (7.11) 0.240 (6.10 0.060 (1.52) PIN 1 0.015 (0.38) 0.210 (5.33) MAX 0.130 (3 ...