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Data Sheet
ADuM1280/ADuM1281/ADuM1285/ADuM1286
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—5 V OPERATION (ALL GRADES)
All typical specifications are at T A = 25°C, V DD1 = V DD2 = 5 V. Minimum/maximum specifications apply over the entire recommended
operation range: 4.5 V ≤ V DD1 ≤ 5.5 V, 4.5 V ≤ V DD2 ≤ 5.5 V, ?40°C ≤ T A ≤ 125°C, unless otherwise noted. Switching specifications are
tested with C L = 15 pF and CMOS signal levels, unless otherwise noted.
Table 1.
A, WA Grades
B, WB Grades
C, WC Grades
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
SWITCHING SPECIFICATIONS
Pulse Width
Data Rate
PW
1000
1
40
25
10
100
ns
Mbps
Within PWD limit
Within PWD limit
Propagation Delay
Pulse Width Distortion
t PHL , t PLH
PWD
50
10
35
3
13
18
24
2
ns
ns
50% input to 50% output
|t PLH ? t PHL |
Change vs. Temperature
7
3
1.5
ps/°C
Propagation Delay Skew
t PSK
38
12
9
ns
Between any two units at
same operating conditions
Channel Matching
Codirectional
Opposing Direction
Jitter
t PSKCD
t PSKOD
2
5
10
2
3
6
1
2
5
ns
ns
ns
Table 2.
1 Mbps–A, B, C,WA, WB,
WC Grades
25 Mbps–B, C, WB,
WC Grades
100 Mbps–C, WC
Grades
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
SUPPLY CURRENT
No load
ADuM1280 / ADuM1285
ADuM1281 / ADuM1286
I DD1
I DD2
I DD1
I DD2
1.1
2.7
2.1
2.3
1.6
4.5
2.6
2.9
6.2
4.8
4.9
4.7
7.0
7.0
6.0
6.4
20
9.5
15
15.6
25
15
19
19
mA
mA
mA
mA
Table 3. For All Models
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions
DC SPECIFICATIONS
Logic High Input Threshold
Logic Low Input Threshold
V IH
V IL
0.7 V DDx
0.3 V DDx
V
V
Logic High Output Voltages
V OH
V DDx ? 0.1
V DDx ? 0.4
5.0
4.8
V
V
I Ox = ?20 μA, V Ix = V IxH
I Ox = ?4 mA, V Ix = V IxH
Logic Low Output Voltages
V OL
0.0
0.2
0.1
0.4
V
V
I Ox = 20 μA, V Ix = V IxL
I Ox = 4 mA, V Ix = V IxL
Input Current per Channel
I I
?10
+0.01
+10
μA
0 V ≤ V Ix ≤ V DDx
Supply Current per Channel
Quiescent Input Supply Current
Quiescent Output Supply Current
Dynamic Input Supply Current
Dynamic Output Supply Current
I DDI(Q)
I DDO(Q)
I DDI(D)
I DDO(D)
0.54
1.6
0.09
0.04
0.8
2.0
mA
mA
mA/Mbps
mA/Mbps
Undervoltage Lockout
Positive V DDx Threshold
Negative V DDx Threshold
V DDx Hysteresis
V DDXUV+
V DDXUV-
V DDXUVH
2.6
2.4
0.2
V
V
V
AC SPECIFICATIONS
Output Rise/Fall Time
t R /t F
2.5
ns
10% to 90%
Common-Mode Transient Immunity 1
|CM|
25
35
kV/μs
V Ix = V DDx , V CM = 1000 V,
transient magnitude = 800 V
Refresh Period
t r
1.6
μs
1
|CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining V o > 0.8 V DDx . The common-mode voltage slew rates apply to both
rising and falling common-mode voltage edges.
Rev. B | Page 3 of 20
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