adm1486 Analog Devices, Inc., adm1486 Datasheet
adm1486
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adm1486 Summary of contents
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... Available in standard 8-lead SOIC package APPLICATIONS Industrial field equipment GENERAL DESCRIPTION The ADM1486 is a differential line transceiver suitable for high speed bidirectional data communication on multipoint bus transmission lines designed for balanced data transmission, complies with EIA Standards RS-485 and RS-422, and is recom- mended for PROFIBUS applications ...
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... ADM1486 TABLE OF CONTENTS Specifications..................................................................................... 3 Timing Specifications....................................................................... 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Test Circuits....................................................................................... 7 Switching Characteristics ................................................................ 8 Typical Performance Characteristics ............................................. 9 REVISION HISTORY 3/05—Rev Rev. A Updated Format..................................................................Universal Added PROFIBUS Logo .................................................................. 1 Updated Outline Dimensions ....................................................... 15 Changes to Ordering Guide .......................................................... 15 11/02—Revision 0: Initial Version Applications Information ...
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... V CM kΩ −7 V ≤ V ≤ − µ +4.0 mA OUT −4.0 mA OUT GND or V OUT CC µA 0.4 V ≤ V ≤ 2.4 V OUT mA Outputs unloaded, digital inputs = GND Outputs unloaded, digital inputs = GND or V ADM1486 CC CC ...
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... ADM1486 TIMING SPECIFICATIONS ±5%. All specifications MIN Table 2. Parameter DRIVER Propagation Delay Input to Output t PLH Driver O/P to O/P t SKEW Driver Rise/Fall Time Driver Enable to Output Valid Driver Disable Timing Matched Enable Switching | t − − ...
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... CC − +14 V affect device reliability. − +14 V −0 0 450 mW 170°C/W −40°C to +85°C −65°C to +150°C 300°C 215°C 220°C Rev Page ADM1486 ...
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... X Z Table 6. Receiving RE A–B Input 0 ≥ +0 ≤ −0 Inputs open ADM1486 TOP VIEW 6 (Not to Scale) DI GND 4 5 Figure 2. Pin Configuration A Output Output Rev Page ...
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... Figure 5. Driver Propagation Delay TST Rev Page OUT Figure 6. Driver Enable/Disable A V OUT Figure 7. Receiver Propagation Delay +1. –1. OUT RE IN Figure 8. Receiver Enable/Disable ADM1486 ...
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... ADM1486 SWITCHING CHARACTERISTICS 3V 1. PLH B 1/2VO – t SKEW PLH PHL 90% POINT VO 0V 10% POINT – Figure 9. Driver Propagation Delay, Rise/Fall Timing Figure 10. Driver Enable/Disable Timing 1.5V t PHL A–B | 90% POINT RO 10% POINT 1. +0. ...
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... Figure 16. Receiver Output Low Voltage vs. Temperature ( mA –10 0 0.5 1.0 1.5 2.0 2.5 3.0 OUTPUT VOLTAGE (V) Figure 17. Output Current vs. Driver Differential Output Voltage 3.00 2.95 2.90 2.85 2.80 2.75 2.70 2.65 2.60 –50 – TEMPERATURE (°C) Figure 18. Driver Differential Output Voltage vs. Temperature (R = 53.6 Ω) LDIFF ADM1486 100 125 3.5 4.0 4.5 100 125 ...
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... ADM1486 0.5 1.0 1.5 2.0 OUTPUT VOLTAGE (V) Figure 19. Output Current vs. Driver Output Low Voltage 0 –10 –20 –30 –40 –50 –60 –70 –80 0 0.5 1.0 1.5 2.0 2.5 3.0 OUTPUT VOLTAGE (V) Figure 20. Output Current vs. Driver Output High Voltage 1.30 1.25 1.20 DRIVER ENABLED 1.15 1.10 1.05 1.00 0.95 0.90 DRIVER DISABLED 0.85 0.80 –50 – TEMPERATURE (°C) Figure 21 ...
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... Diff = 54 Ω 100 pF CH1 1.00VΩ CH2 1.00VΩ M10.0ns CH1 Figure 29. Unloaded Driver Outputs at 15 Mbps CH1 1.00VΩ CH2 1.00VΩ M4.00ns CH1 Figure 30. Unloaded Driver Outputs at 30 Mbps ADM1486 1.72V A B 3.40V A B 3.40V ...
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... ADM1486 1, 2 CH1 1.00VΩ CH2 1.00VΩ M4.00ns Figure 31. Loaded Driver Outputs at 15 Mbps ( Ω 100 pF) LDIFF CH1 3.40V Rev Page CH1 1.00VΩ CH2 1.00VΩ M4.00ns CH1 Figure 32. Loaded Driver Outputs at 30 Mbps ( Ω ...
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... As the device cools, the drivers are re-enabled at 140°C. PROPAGATION DELAY The ADM1486 features very low propagation delay, ensuring maximum baud rate operation. The well-balanced driver ensures distortion-free transmission. Another important specification is a measure of the skew between the complementary outputs ...
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... ADM1486 Table 7. Comparison of RS-422, RS-485, and PROFIBUS Interface Standards Specification Transmission Type Maximum Cable Length Minimum Driver Output Voltage Driver Load Impedance Receiver Input Resistance Receiver Input Sensitivity Receiver Input Voltage Range No. of Drivers/Receivers per Line RS-422 RS-485 Differential Differential 4,000 ft. ...
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... Temperature Range ADM1486AR −40°C to +85°C ADM1486AR-REEL −40°C to +85°C ADM1486AR-REEL7 −40°C to +85°C 1 ADM1486ARZ −40°C to +85°C 1 ADM1486ARZ-REEL −40°C to +85°C 1 ADM1486ARZ-REEL7 −40°C to +85° Pb-free part. 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 4.00 (0.1574) 5.80 (0.2284) 3.80 (0.1497 ...
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... ADM1486 NOTES © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C02603-0-3/05(A) Rev Page ...