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ISO1540 Datasheet(PDF) 12 Page - Texas Instruments

Part # ISO1540
Description  ISO154x Low-Power Bidirectional I2C Isolators
PDF  37 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

ISO1540 Datasheet(HTML) 12 Page - Texas Instruments

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6.12 Switching Characteristics
over recommended operating conditions, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
3 V ≤ VCC1, VCC2 ≤ 3.6 V
tf1
Output Signal Fall Time
(SDA1, SCL1)
See Figure 7-1
R1 = 953 Ω,
C1 = 40 pF
0.7 × VCC1 to 0.3 × VCC1
8
17
29
ns
0.9 × VCC1 to 900 mV
16
29
48
tf2
Output Signal Fall Time
(SDA2, SCL2)
See Figure 7-1
R2 = 95.3 Ω,
C2 = 400 pF
0.7 × VCC2 to 0.3 × VCC2
14
23
47
ns
0.9 × VCC2 to 400 mV
35
50
100
tpLH1-2
Low-to-High Propagation
Delay, Side 1 to Side 2
See Figure 7-1
R1 = 953 Ω,
R2 = 95.3 Ω,
C1, C2 = 10 pF
0.55 V to 0.7 × VCC2
33
65
ns
tPHL1-2
High-to-Low Propagation
Delay, Side 1 to Side 2
0.7 V to 0.4 V
90
181
ns
PWD1-2
Pulse Width Distortion
|tpHL1-2 – tpLH1-2|
55
123
ns
tPLH2-1 (1)
Low-to-High Propagation
Delay, Side 2 to Side 1
0.4 × VCC2 to 0.7 × VCC1
47
68
ns
tPHL2-1 (1)
High-to-Low Propagation
Delay, Side 2 to Side 1
0.4 × VCC2 to 0.9 V
67
109
ns
PWD2-1 (1)
Pulse Width Distortion
|tpHL2-1 – tpLH2-1|
20
49
ns
tLOOP1 (1)
Round-trip propagation
delay on Side 1
See Figure 7-2;
R1 = 953 Ω, C1 = 40 pF
R2 = 95.3 Ω, C2 = 400 pF
0.4 V to 0.3 × VCC1
100
165
ns
4.5 V ≤ VCC1, VCC2 ≤ 5.5 V
tf1
Output Signal Fall Time
(SDA1, SCL1)
See Figure 7-1
R1 = 1430 Ω,
C1 = 40 pF
0.7 × VCC1 to 0.3 × VCC1
6
11
22
ns
0.9 × VCC1 to 900 mV
13
21
48
tf2
Output Signal Fall Time
(SDA2, SCL2)
See Figure 7-1
R2 = 143 Ω,
C2 = 400 pF
0.7 × VCC2 to 0.3 × VCC2
10
18
35
ns
0.9 × VCC2 to 400 mV
28
41
76
tpLH1-2
Low-to-High Propagation
Delay, Side 1 to Side 2
See Figure 7-1
R1 = 1430 Ω,
R2 = 143 Ω,
C1,2 = 10 pF
0.55 V to 0.7 × VCC2
31
62
ns
tPHL1-2
High-to-Low Propagation
Delay, Side 1 to Side 2
0.7 V to 0.4 V
70
139
ns
PWD1-2
Pulse Width Distortion
|tpHL1-2 – tpLH1-2|
38
80
ns
tPLH2-1 (1)
Low-to-high propagation
delay, side 2 to side 1
0.4 × VCC2 to 0.7 × VCC1
55
80
ns
tPHL2-1 (1)
High-to-low propagation
delay, Side 2 to side 1
0.4 × VCC2 to 0.9 V
47
85
ns
PWD2-1 (1)
Pulse Width Distortion
|tpHL2-1 – tpLH2-1|
8
34
ns
tLOOP1 (1)
Round-trip propagation
delay on side 1
See Figure 7-2;
R1 = 1430 Ω, C1 = 40 pF
R2 = 143 Ω, C2 = 400 pF
0.4 V to 0.3 × VCC1
110
180
ns
(1)
This parameter does not apply to the ISO1541 SCL1 line as it is unidirectional.
ISO1540, ISO1541
SLLSEB6F – JULY 2012 – REVISED DECEMBER 2022
www.ti.com
12
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Product Folder Links: ISO1540 ISO1541



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