Si840x
Table 4. Electrical Characteristics for Unidirectional Non-I 2 C Digital Channels (Si8402/05)
3.0 V < VDD < 5.5 V. TA = –40 to +125 °C. Typical specs at 25 °C
Output Impedance
Parameter
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
Low Level Output Voltage
Input Leakage Current
1
Symbol
V IH
V IL
V OH
V OL
I L
Z O
Test Condition
loh = –4 mA
lol = 4 mA
Min
2.0
AVDD, BVDD
–0.4
Typ
4.8
0.2
85
Max
0.8
0.4
±10
Unit
V
V
V
V
μA
?
Timing Characteristics
Maximum Data Rate
Minimum Pulse Width
0
10
40
Mbps
ns
Propagation Delay
Pulse Width Distortion
t PHL , t PLH
PWD
See Figure 1
See Figure 1
20
12
ns
ns
|t PLH - t PHL |
Propagation Delay Skew 2
Channel-Channel Skew
t PSK(P-P)
t PSK
20
10
ns
ns
Output Rise Time
t r
C 3 = 15 pF
See Figure 1 and
4.0
6.0
ns
Figure 2
Output Fall Time
t f
C 3 = 15 pF
See Figure 1 and
3.0
4.3
ns
Figure 2
Notes:
1. The nominal output impedance of a non-I 2 C isolator driver channel is approximately 85 ? , ±40%, which is a
combination of the value of the on-chip series termination resistor and channel resistance of the output driver FET.
When driving loads where transmission line effects will be a factor, output pins should be appropriately terminated with
controlled impedance PCB traces.
2. t PSK(P-P) is the magnitude of the difference in propagation delay times measured between different units operating at
the same supply voltages, load, and ambient temperature.
Rev. 1.6
7
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