0
25
50
75
100
125
150
175
200
225
250
275
300
-50 -25 0 25 50 75 100
T
A
– Free-Air Tem perature – °C
V
OH
– Output High Voltage – mV
V
CC
= 5 V, I
OL
= 10 m A
V
CC
= 2.5 V, I
OL
= 10 m A
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Number of I/Os Held Low
I
CC
– Supply Current – µA
T
A
= –40°C
V
CC
= 5 V
T
A
= 25°C
T
A
= 125°C
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
(V
CC
– V
OH
) – V
I
SOURCE
– I/O Source Current – mA
T
A
= –40°C
V
CC
= 5 V
T
A
= 25°C
T
A
= 125°C
0
5
10
15
20
25
30
35
40
45
50
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
(V
CC
– V
OH
) – V
I
SOURCE
– I/O Source Current – mA
T
A
= –40°C
V
CC
= 3.3 V
T
A
= 25°C
T
A
= 125°C
0
25
50
75
100
125
150
175
200
225
250
275
300
-50 -25 0 25 50 75 100
T
A
– Free-Air Tem perature – °C
V
OL
– Output Low Voltage – mV
V
CC
= 5 V, I
SINK
= 10 m A
V
CC
= 2.5 V, I
SINK
= 10 m A
V
CC
= 2.5 V, I
SINK
= 1 m A
V
CC
= 5 V, I
SINK
= 1 m A
0
5
10
15
20
25
30
35
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
(V
CC
– V
OH
) – V
I
SOURCE
– I/O Source Current – mA
T
A
= –40°C
V
CC
= 2.5 V
T
A
= 25°C
T
A
= 125°C
8
PCA9555
ZHCSHU7G –AUGUST 2005–REVISED MARCH 2018
www.ti.com.cn
Copyright © 2005–2018, Texas Instruments Incorporated
Typical Characteristics (continued)
T
A
= 25°C (unless otherwise noted)
Figure 7. I/O Output Low Voltage vs Temperature
Figure 8. I/O Source Current vs Output High Voltage
Figure 9. I/O Source Current vs Output High Voltage
Figure 10. I/O Source Current vs Output High Voltage
Figure 11. I/O High Voltage vs Temperature
Figure 12. Supply Current vs Number Of I/Os Held Low
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