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ADM1487EARZ 数据表(PDF) 3 Page - Analog Devices |
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ADM1487EARZ 数据表(HTML) 3 Page - Analog Devices |
3 / 16 page ADM485E/ADM487E/ADM1487E Rev. 0 | Page 3 of 16 SPECIFICATIONS VCC = 5 V ± 5%, TA = TMIN to TMAX, unless otherwise noted. Table 2. ADM485E/ADM487E/ADM1487E Parameter Symbol Min Typ Max Unit Test Conditions/Comments DRIVER Differential Outputs Differential Output Voltage (no Load) VOD1 5 V VOD2 2 V RL = 50 Ω (RS-422) Differential Output Voltage (with Load) 1.5 5 V RL = 27 Ω (RS-485) (see Figure 18) Δ |VOD| for Complementary Output States 0.2 V RL = 27 Ω or 50 Ω (see Figure 18) Common-Mode Output Voltage VOC 3 V RL = 27 Ω or 50 Ω (see Figure 18) Δ |VOC| for Complementary Output States 0.2 V RL = 27 Ω or 50 Ω (see Figure 18) Logic Inputs Input High Voltage VIH 2.0 V DE, DI, RE Input Low Voltage VIL 0.8 V DE, DI, RE Logic Input Current IIN1 ±2 μA DE, DI, RE RECEIVER IIN2 1.0 mA DE = 0 V, VIN = 12 V −0.8 mA VCC = 0 V or +5.25 V, VIN = −7 V (ADM485E) 0.25 mA DE = 0 V, VIN = 12 V Input Current (A, B) −0.2 mA VCC = 0 V or +5.25 V, VIN = −7 V (ADM487E/ADM1487E) Differential Inputs Differential Input Threshold Voltage VTH −0.2 +0.2 V −7 V < VCM < +12 V Input Hysteresis ΔVTH 70 mV VCM = 0 V Receiver Output Logic Output Voltage High VOH 3.5 V IOUT = −4 mA, VID = +200 mV Output Voltage Low VOL 0.4 V IOUT = +4 mA, VID = −200 mV Three-State Output Leakage Current IOZR ±1 μA 0.4 V < VO < 2.4 V RIN 12 kΩ −7 V < VCM < +12 V (ADM485E) Receiver Input Resistance 48 kΩ −7 V< VCM < +12 V (ADM487E/ADM1487E) POWER SUPPLY ICC 500 900 μA RE = 0 V or VCC, DE = VCC (ADM485E) 300 500 μA RE = 0 V or VCC, DE = 0 V (ADM485E) 300 500 μA RE = 0 V or VCC, DE = VCC (ADM1487E) 230 400 μA RE = 0 V or VCC, DE = 0 V (ADM1487E) 250 400 μA RE = 0 V or VCC, DE = VCC (ADM487E) No Load Supply Current 120 250 μA RE = 0 V, DE = 0 V (ADM487E) Supply Current in Shutdown ISHDN 0.5 10 μA DE = 0 V, RE = VCC (ADM487E) Driver Short-Circuit Current, VO High IOSD1 35 250 mA −7 V ≤ VO ≤ +12 V, applies to peak current Driver Short-Circuit Current, VO Low IOSD2 35 250 −7 V ≤ VO ≤ +12 V, applies to peak current Receiver Short-Circuit Current IOSR 7 95 mA 0 V ≤ VO ≤ VCC ESD PROTECTION A, B Pins ±15 kV Human body model |
类似零件编号 - ADM1487EARZ |
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类似说明 - ADM1487EARZ |
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