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ADM2490E Datasheet(PDF) 3 Page - Analog Devices

Part No. ADM2490E
Description  High Speed, ESD-Protected, Full-Duplex, iCoupler, Isolated RS-485 Transceiver
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

ADM2490E Datasheet(HTML) 3 Page - Analog Devices

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ADM2490E
Rev. 0 | Page 3 of 16
SPECIFICATIONS
All voltages are relative to their respective ground; 2.7 ≤ VDD1 ≤ 5.5 V, 4.5 V ≤ VDD2 ≤ 5.5 V. All minimum/maximum specifications apply
over the entire recommended operation range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = VDD2 = 5.0 V,
unless otherwise noted.
Table 1.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions
SUPPLY CURRENT
Power-Supply Current, Logic Side
TxD/RxD Data Rate < 2 Mbps
IDD1
3.0
mA
2.7 V ≤ VDD1 ≤ 5.5 V, unloaded
TxD/RxD Data Rate = 16 Mbps
IDD1
6
mA
100 Ω load between Y and Z
Power-Supply Current, Bus Side
TxD/RxD Data Rate < 2 Mbps
IDD2
4.0
mA
2.7 V ≤ VDD1 ≤ 5.5 V, unloaded
TxD/RxD Data Rate = 16 Mbps
IDD2
60
mA
100 Ω load between Y and Z
DRIVER
Differential Outputs
Differential Output Voltage, Loaded
|VOD2|
2.0
5.0
V
RL = 50 Ω (RS-422),
see Figure 3
1.5
5.0
V
RL = 27 Ω (RS-485),
see Figure 3
|VOD4|
1.5
5.0
V
−7 V ≤ VTEST1 ≤ +12 V,
see Figure 4
∆|VOD| for Complementary Output States
∆|VOD|
0.2
V
RL = 54 Ω or 100 Ω,
see Figure 3
Common-Mode Output Voltage
VOC
3.0
V
RL = 54 Ω or 100 Ω,
see Figure 3
∆|VOC| for Complementary Output States
∆|VOC|
0.2
V
RL = 54 Ω or 100 Ω,
see Figure 3
Short-Circuit Output Current
IOS
200
mA
Logic Inputs
Input Threshold Low
VILTxD
0.25 × VDD1
V
Input Threshold High
VIHTRxD
0.7 × VDD1
V
TxD Input Current
ITxD
−10
+0.01
+10
μA
RECEIVER
Differential Inputs
Differential Input Threshold Voltage
VTH
−0.2
+0.2
V
Input Voltage Hysteresis
VHYS
70
mV
VOC = 0 V
Input Current (A, B)
II
1.0
mA
VOC = 12 V
−0.8
mA
VOC = −7 V
Line Input Resistance
RIN
12
Logic Outputs
Output Voltage Low
VOLRxD
0.2
0.4
V
IORxD = 1.5 mA, VA − VB = −0.2 V
Output Voltage High
VOHRxD
VDD1 − 0.3
VDD1 − 0.2
V
IORxD = −1.5 mA, VA − VB = 0.2 V
Short Circuit Current
100
mA
COMMON-MODE TRANSIENT IMMUNITY1
25
kV/μs
VCM = 1 kV, transient
magnitude = 800 V
1 CM 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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