ADM1487EARZ Analog Devices Inc, ADM1487EARZ Datasheet
ADM1487EARZ
Specifications of ADM1487EARZ
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ADM1487EARZ Summary of contents
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FEATURES TIA/EIA RS-485/RS-422 compliant ESD protection on RS-485 I/O pins ±15 kV human body model (HBM) Data rates ADM487E: 250 kbps ADM485E/ADM1487E: 2.5 Mbps Half-duplex Reduced slew rates for low EMI Common-mode input range: − +12 V Thermal ...
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ADM485E/ADM487E/ADM1487E TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications .................................................................. 4 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. ...
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SPECIFICATIONS ± 10 unless otherwise noted MIN MAX Table 2. ADM485E/ADM487E/ADM1487E Parameter DRIVER Differential Outputs Differential Output Voltage (No Load) Differential Output Voltage (with Load) Δ ...
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ADM485E/ADM487E/ADM1487E TIMING SPECIFICATIONS ± 10 unless otherwise noted MIN MAX Table 3. ADM485E/ADM1487E Parameter DRIVER Driver Propagation Delay Input to Output, Low to High Driver Propagation Delay Input ...
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± 10 unless otherwise noted MIN MAX Table 4. ADM487E Parameter DRIVER Driver Propagation Delay Input to Output, Low to High Driver Propagation Delay Input to Output, High ...
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ADM485E/ADM487E/ADM1487E ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 5. Parameter V to GND CC Digital I/O Voltage (DE, RE) Driver Input Voltage (DI) Receiver Output Voltage (RO) Driver Output/Receiver Input Voltage (A, B) Operating Temperature Range ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 6. Pin Function Descriptions Pin No. Mnemonic Description 1 RO Receiver Output. When enabled > 200 mV, then RO = high < 200 mV, then RO ...
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ADM485E/ADM487E/ADM1487E TYPICAL PERFORMANCE CHARACTERISTICS 0.5 1.0 1.5 OUTPUT LOW VOLTAGE (V) Figure 3. Output Current vs. Receiver Output Low Voltage –30 –25 –20 –15 –10 –5 0 1.5 ...
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OUTPUT LOW VOLTAGE (V) Figure 9. Output Current vs. Driver Output Low Voltage –140 –120 –100 –80 –60 –40 –20 0 –8 –6 –4 –2 0 OUTPUT ...
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ADM485E/ADM487E/ADM1487E CH1 5.00V CH2 500mV M200ns CH3 500mV T 60.80% Figure 15. ADM487E Receiver t Driven by External RS-485 Device RPLH CH1 5.00V CH2 ...
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TEST CIRCUITS AND SWITCHING CHARACTERISTICS Figure 18. Driver DC Test Load Figure 19. Driver Timing Test Circuit DPLH ...
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ADM485E/ADM487E/ADM1487E RZH, RZH(SHDN CLOSED S3 = +1.5V RE +1.5V +0.5V RO +1.5V S3 1kΩ –1. 15pF GENERATOR 50Ω S1 OPEN S2 CLOSED S3 = +1.5V + ...
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THEORY OF OPERATION The ADM485E/ADM487E/ADM1487E are ruggedized RS-485 transceivers that operate from a single 5 V supply. They contain protection against high levels of electrostatic discharge and are ideally suited for operation in electrically harsh environments or where cables can ...
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ADM485E/ADM487E/ADM1487E ESD Testing Two coupling methods are used for ESD testing: contact discharge and air-gap discharge. Contact discharge calls for a direct connection to the unit being tested; air-gap discharge uses a higher test voltage but does not make direct ...
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APPLICATIONS INFORMATION DIFFERENTIAL DATA TRANSMISSION Differential data transmission is used to reliably transmit data at high rates over long distances and through noisy environ- ments. Differential transmission nullifies the effects of ground shifts and noise signals that appear as common-mode ...
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... ADM487EWARZ –40°C to +85°C ADM487EWARZ-REEL7 –40°C to +85°C ADM1487EARZ –40°C to +85°C ADM1487EARZ-REEL7 –40°C to +85° RoHS Compliant Part Qualified for Automotive Applications. AUTOMOTIVE PRODUCTS The ADM487EW models are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. Note that these automotive models may have specifications that differ from the commercial models ...