TCA9554A Datasheet, PDF (16/33 Pages) Texas Instruments – LOW VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER

TCA9554A
SCPS196 – DECEMBER 2010
www.ti.com
TYPICAL CHARACTERISTICS - ADD RELEVANT INFO AT VCC = 1.65 V TO PLOTS
SUPPLY CURRENT
vs
TEMPERATURE
QUIESCENT SUPPLY CURRENT
vs
TEMPERATURE
55
50
V_CC = 5 V
45
40
35
f_SCL = 400 kHz
I/Os unloaded
30
25
V_CC = 3.3 V
20
15
V_CC = 2.5 V
10
5
0
-40
-15
10
35
60
85
T_A – Free-Air Temperature – °C
35
30
25
V_CC = 3.3 V
20
V_CC = 5 V
15
V_CC = 2.5 V
10
5
0
-40
SCL = V_CC
-15
10
35
60
85
T_A – Free-Air Temperature – °C
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
70
f_SCL = 400 kHz
I/Os unloaded
60
50
40
30
20
10
0
2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
V_CC – Supply Voltage – V
SUPPLY CURRENT
vs
NUMBER OF I/Os HELD LOW
600
550 VCC = 5 V
500
450
400
T_A = –40°C
350
300
250
T_A = 25°C
200
150
T_A = 85°C
100
50
0
0 12 3 45 67 8
Number of I/Os Held Low
16
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