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ADM3485EARZ-REEL Scheda tecnica(PDF) 3 Page - Analog Devices

Il numero della parte ADM3485EARZ-REEL
Spiegazioni elettronici  짹15 kV ESD-Protected, 3.3 V,12 Mbps, EIA RS-485/RS-422 Transceiver
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

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ADM3485E
Rev. D | Page 3 of 16
SPECIFICATIONS
VCC = +3.3 V ± 0.3 V. All specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Differential Outputs
Differential Output Voltage
VOD
2.0
V
RL = 100 Ω (RS-422) (see Figure 3)
1.5
V
RL = 54 Ω (RS-485) (see Figure 3)
1.5
V
RL = 60 Ω (RS-485) (see Figure 4)
∆|VOD| for Complementary Output States1
∆VOD
0.2
V
RL = 54 Ω or 100 Ω (see Figure 3)
Common-Mode Output Voltage
VOC
3
V
RL = 54 Ω or 100 Ω ( see Figure 3)
∆|VOC| for Complementary Output States1
∆VOC
0.2
V
RL = 54 Ω or 100 Ω (see Figure 3)
Short-Circuit Output Current
IOSD
–250
mA
VOUT = –7 V
250
mA
VOUT = 12 V
Logic Inputs
Input Low Voltage
VIL
0.8
V
DE, DI, RE
Input High Voltage
VIH
2.0
V
DE, DI, RE
Logic Input Current
IIN1
±2
µA
DE, DI, RE
RECEIVER
Differential Inputs
Differential Input Threshold Voltage
VTH
–0.2
+0.2
V
–7 V < VCM < +12 V
Input Voltage Hysteresis
∆VTH
50
mV
VCM = 0 V
Input Resistance (A, B)
RIN
12
kΩ
–7 V < VCM < +12 V
Input Current (A, B)
IIN2
1.0
mA
DE = 0 V, VCC = 0 V or 3.6 V, VIN = 12 V
–0.8
mA
DE = 0 V, VCC = 0 V or 3.6 V, VIN = –7 V
RO Logic Output
Output Voltage High
VOH
VCC – 0.4 V
V
IOUT = –1.5 mA, VID = 200 mV (see Figure 5)
Output Voltage Low
VOL
0.4
V
IOUT = 2.5 mA, VID = 200 mV (see Figure 5)
Short-Circuit Output Current
IOSR
±8
±60
mA
0 V < VRO < VCC
Tristate Output Leakage Current
IOZR
±1
µA
VCC = 3.6 V, 0 V < VOUT < VCC
POWER SUPPLY CURRENT
Voltage Range
VCC
3.0
3.6
V
Supply Current
ICC
1.1
2.2
mA
No load, DI = 0 V or VCC, DE = VCC,
RE = 0 V or VCC
0.95
1.9
mA
No load, DI = 0 V or VCC, DE = 0 V,
RE = 0 V
Shutdown Current
ISHDN
0.002
1
µA
DE = 0 V, RE = VCC, DI = 0 V or VCC
ESD PROTECTION
A, B Pins
±15
kV
Human body model
All Pins Except A, B
±4
kV
Human body model
1
Δ|VOD| and Δ|VOC| are the changes in VOD and VOC, respectively, when DI input changes state.


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