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ADM487E датащи(PDF) 3 Page - Analog Devices

номер детали ADM487E
подробное описание детали  5 V, 짹15 kV ESD Protected Half-Duplex, RS-485/RS-422 Transceivers
PDF  16 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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ADM487E датащи(HTML) 3 Page - Analog Devices

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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



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