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Si8402AB-B-IS Datasheet(PDF) 6 Page - Silicon Laboratories

Part # Si8402AB-B-IS
Description  BIDIRECTIONAL I2C ISOLATORS WITH UNIDIRECTIONAL DIGITAL CHANNELS
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Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

Si8402AB-B-IS Datasheet(HTML) 6 Page - Silicon Laboratories

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Si840x
6
Rev. 1.6
Timing Specifications (Measured at 1.40 V Unless Otherwise Specified)
Maximum I2C bus Frequency
Fmax
1.7
MHz
Propagation Delay
5 V Operation
Side A to side B rising5
Side A to side B falling5
Side B to side A rising
Side B to side A falling
3.3 V Operation
Side A to side B rising5
Side A to side B falling5
Side B to side A rising
Side B to side A falling
Tphab
Tplab
Tphba
Tplba
Tphab
Tplab
Tphba
Tplba
No bus capacitance,
R1 = 1400,
R2 = 499,
See Figure 2
R1 = 806
R2 = 499
25
15
20
9.0
28
13
20
10
29
22
30
12
35
18
40
15
ns
ns
ns
ns
ns
ns
ns
ns
Pulse width distortion
5V
Side A low to Side B low5
Side B low to Side A low
3.3 V
Side A low to Side B low5
Side B low to Side A low
PWDAB
PWDBA
PWDAB
PWDBA
No bus capacitance,
R1 = 1400,
R2 = 499,
See Figure 2
R1 = 806,
R2 = 499
9.0
11
15
11
15
20
22
30
ns
ns
ns
ns
Table 3. Si8400/01/02/05 Electrical Characteristics for Bidirectional I2C Channels1 (Continued)
3.0 V < VDD < 5.5 V. TA = –40 to +125 °C. Typical specs at 25 °C unless otherwise noted.
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Notes:
1.
All voltages are relative to respective ground.
2.
VIL < 0.450 V, VIH > 0.780 V.
3.
Logic low output voltages are 910 mV max from –10 to 125 °C at 3.0 mA.
Logic low output voltages are 955 mV max from –40 to 125 °C at 3.0 mA.
Logic low output voltages are 825 mV max from –10 to 125 °C at 0.5 mA.
Logic low output voltages are 875 mV max from –40 to 125 °C at 0.5 mA.
See “AN375: Design Considerations for Isolating an I2C Bus or SMBus” for additional information.
4.
I2C
V (Side A) = I2CVOL (Side A) – I2CVT (Side A). To ensure no latch-up on a given bus, I2CV (Side A) is the
minimum difference between the output logic low level of the driving device and the input logic threshold.
5.
Side A measured at 0.6 V.


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