ADM1487 AD [Analog Devices], ADM1487 Datasheet
ADM1487
Available stocks
Related parts for ADM1487
ADM1487 Summary of contents
Page 1
... Ultra-Low Power RS-485/RS-422 Transceiver with Low EMI and +/-10kV ESD Protection GENERAL DESCRIPTION The ADM1487 is an ultra-low power RS-485/RS-422 transceiver consisting of one driver and one receiver per package. Quiescent operating current is typically 80µA and 1µA in shutdown mode. The driver and receiver both have three-state outputs ...
Page 2
... PRELIMINARY TECHNICAL DATA ADM1487 ADM1487 SPECIFICATIONS DC ELECTRICAL CHARACTERISTICS Parameter Differential Driver Output Voltage,V Differential Driver Output Voltage, V Change in Magnitude of Driver Differential Output Voltage for Complementary Output States, VOD Driver Common-Mode Output Voltage Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States, ...
Page 3
... PRELIMINARY TECHNICAL DATA ADM1487 SPECIFICATIONS (continued) ELECTRICAL CHARACTERISTICS Parameter Differential Driver Output Voltage, V Differential Driver Output Voltage, V Driver Common-Mode Output Voltage Differential Input Threshold Voltage for Receiver Receiver Input Hysteresis Supply Current Supply Current in Shutdown Mode, I SHDN ...
Page 4
... All typicals are given for Vcc = 5V and Tp = 25°C. 4 The ADM1487 is not tested and is not quality-assurance sampled at -40°C and at 85°C. These specifications are guaranteed by design, correlation, andlor inference from 0°C, 25°C and/or 70°C tests. ABSOLUTE MAXIMUM RATINGS Supply Voltage (Vcc 12V Control Input Voltage . . . . . . . . . . . – ...
Page 5
... PRELIMINARY TECHNICAL DATA ADM1487 TEST CIRCUITS AND TIMING Figure 1. Driver DC Load Test Circuit OD2 DIFF Figure 2. Driver/Receiver Timing Test Circuit # # DPLH DIFF 90 DIFF ...
Page 6
... PRELIMINARY TECHNICAL DATA ADM1487 ADM1487 TYPICAL PERFORMANCE CHARACTERISTICS TPC1. No-load Supply Current vs. Tem- perature TPC4. Receiver Output High Voltage vs. Temperature PIN FUNCTION DESCRIPTION Pin Mnemonic Description Receiver Output. When RE is low and When RE is low and Receiver Output Enable. Take RE low to enable RO high impedance when RE is high. ...
Page 7
... THREE-STATE BUS CONNECTION The ADM1487 has a Driver Enable pin (DE) that enables the driver outputs when taken high or puts the driver out- puts into a high-impedance state when taken low. This al- lows several driver outputs to be connected to an RS-422/ RS-485 bus ...
Page 8
... V prevent the N-channel's parasitic diode from conducting when the output voltage falls below ground. SLEW RATE CONTROL The driver output stage of the ADM1487 has a controlled slew rate to minmize signal reflections on incorrectly termi- nated lines and to reduce electromagnetic interference (EMI). RECEIVER ...