ADuM7440/ADuM7441/ADuM7442 Data Sheet
Rev. D | Page 6 of 20
ELECTRICAL CHARACTERISTICS—MIXED 3.3 V/5 V OPERATION
All typical specifications are at T
A
= 25°C, V
DD1
= 3.3 V, V
DD2
= 5 V. Minimum/maximum specifications apply over the entire recommended
operation range of 3.0 V ≤ V
DD1
≤ 3.6 V, 4.5 V ≤ V
DD2
≤ 5.5 V, and −40°C ≤ T
A
≤ +105°C, unless otherwise noted. Switching specifications
are tested with C
L
= 15 pF and CMOS signal levels, unless otherwise noted.
Table 10.
A Grade C Grade
Parameter Symbol Min Typ Max Min Typ Max Unit Test Conditions/Comments
SWITCHING SPECIFICATIONS
Data Rate 1 25 Mbps Within PWD limit
Propagation Delay t
PHL
, t
PLH
55 80 31 46 60 ns 50% input to 50% output
Pulse Width Distortion PWD 10 25 2 5 ns |t
PLH
− t
PHL
|
Change vs. Temperature 5 3 ps/°C
Pulse Width PW 250 40 ns Within PWD limit
Propagation Delay Skew
1
t
PSK
20 10 ns
Channel Matching
Codirectional t
PSKCD
25 2 5 ns
Opposing-Direction t
PSKOD
30 3 7 ns
Jitter 2 2 ns
1
t
PSK
is the magnitude of the worst-case difference in t
PHL
or t
PLH
that is measured between units at the same operating temperature, supply voltages, and output load
within the recommended operating conditions.
Table 11.
1 Mbps—A, C Grades 25 Mbps—C Grade
Parameter Symbol Min Typ Max Min Typ Max Unit Test Conditions/Comments
SUPPLY CURRENT
ADuM7440 I
DD1
2.7 3.3 18 24
mA
I
DD2
2.5 3.3 5.7 8.0
mA
ADuM7441 I
DD1
2.5 3.3 12 20
mA
I
DD2
3.6 4.6 8.0 11
mA
ADuM7442 I
DD1
2.0 2.4 8.9 13
mA
I
DD2
3.2 4.0 12 15
mA
Table 12. For All Models
DC SPECIFICATIONS
Logic High Input Threshold V
IH
0.7 V
DDx
V
Logic Low Input Threshold V
IL
0.3 V
DDx
V
Logic High Output Voltages V
OH
V
DDx
− 0.1 V
DDx
V I
Ox
= −20 µA, V
Ix
= V
IxH
V
DDx
− 0.4 V
DDx
− 0.2 V I
Ox
= −4 mA, V
Ix
= V
IxH
Logic Low Output Voltages
OL
Ox
Ix
IxL
0.2 0.4 V 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 I
DDI(Q)
0.50 0.60 mA
Quiescent Output Supply Current I
DDO(Q)
0.61 0.73 mA
Dynamic Input Supply Current I
DDI(D)
0.17 mA/Mbps
Dynamic Output Supply Current I
DDO(D)
0.03 mA/Mbps
AC SPECIFICATIONS
Output Rise/Fall Time t
R
/t
F
2.5 ns 10% to 90%
Common-Mode Transient Immunity
1
|CM| 15 20 kV/µs
V
Ix
= V
DDx
, V
CM
= 1000 V,
transient magnitude = 800 V
Refresh Rate f
r
1.1 Mbps
1
|CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining V
O
> 0.8 V
DD
. The common-mode voltage slew rates apply to both
rising and falling common-mode voltage edges.
