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ADM2483BRWZ-REEL データシート(PDF) 3 Page - Analog Devices |
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ADM2483BRWZ-REEL データシート(HTML) 3 Page - Analog Devices |
3 / 20 page ADM2483 Rev. B | Page 3 of 20 SPECIFICATIONS 2.7 ≤ VDD1 ≤ 5.5 V, 4.75 V ≤ VDD2 ≤ 5.25 V, TA = TMIN to TMAX, unless otherwise noted. Table 1. Parameter Min Typ Max Unit Test Conditions/Comments DRIVER Differential Outputs Differential Output Voltage, VOD 5 V R = ∞, see Figure 3 2.0 5 V R = 50 Ω (RS-422), see Figure 3 1.5 5 V R = 27 Ω (RS-485), see Figure 3 1.5 5 V VTST = −7 V to +12 V, VDD1 ≥ 4.75, see Figure 4 ∆ |VOD| for Complementary Output States 0.2 V R = 27 Ω or 50 Ω, see Figure 3 Common-Mode Output Voltage, VOC 3 V R = 27 Ω or 50 Ω, see Figure 3 ∆ |VOC| for Complementary Output States 0.2 V R = 27 Ω or 50 Ω, see Figure 3 Output Short-Circuit Current, VOUT = High −250 +250 mA −7 V ≤ VOUT ≤ +12 V Output Short-Circuit Current, VOUT = Low −250 +250 mA −7 V ≤ VOUT ≤ +12 V Logic Inputs Input High Voltage 0.7 VDD1 V TxD, DE, RE, PV Input Low Voltage 0.25 VDD1 V TxD, DE, RE, PV CMOS Logic Input Current (TxD, DE, RE, PV) −10 +0.01 +10 µA TxD, DE, RE, PV = VDD1 or 0 V RECEIVER Differential Inputs Differential Input Threshold Voltage, VTH −200 −125 −30 mV −7 V ≤ VCM ≤ +12 V Input Hysteresis 20 mV −7 V ≤ VCM ≤ +12 V Input Resistance (A, B) 96 150 kΩ −7 V ≤ VCM ≤ +12 V Input Current (A, B) 0.125 mA VIN = +12 V −0.1 mA VIN = −7 V RxD Logic Output Output High Voltage VDD1 − 0.1 V IOUT = 20 µA, VA − VB = 0.2 V VDD1 − 0.4 VDD1 − 0.2 V IOUT = 4 mA, VA − VB = 0.2 V Output Low Voltage 0.1 V IOUT = −20 µA, VA − VB = −0.2 V 0.4 V IOUT = −4 mA, VA − VB = −0.2 V Output Short-Circuit Current 7 85 mA VOUT = GND or VCC Three-State Output Leakage Current ±1 µA 0.4 V ≤ VOUT ≤ 2.4 V POWER SUPPLY CURRENT Logic Side 2.5 mA 4.5 V ≤ VDD1 ≤ 5.5 V, outputs unloaded, RE = 0 V 1.3 mA 2.7 V ≤ VDD1 ≤ 3.3 V, outputs unloaded, RE = 0 V Bus Side 2.0 mA Outputs unloaded, DE = 5 V 1.7 mA Outputs unloaded, DE = 0 V COMMON-MODE TRANSIENT IMMUNITY1 25 kV/µs TxD = VDD1 or 0 V, VCM = 1 kV, transient magnitude = 800 V 1 Common-mode transient immunity is the maximum common-mode voltage slew rate that can be sustained while maintaining specification-compliant operation. VCM is the common-mode potential difference between the logic and bus sides. The transient magnitude is the range over which the common mode is slewed. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges. |
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