TCA6424 Datasheet, PDF (17/29 Pages) Texas Instruments – LOW-VOLTAGE 24-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

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TCA6424
LOW-VOLTAGE 24-BIT I²C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
SCPS175 – NOVEMBER 2007
TYPICAL CHARACTERISTICS
T_A = 25°C (unless otherwise noted)
SUPPLY CURRENT
vs
TEMPERATURE
100
f_SCL = 400 kHz
90 _{All I/Os unloaded}
80
70
V_CC = 5 V
60
50
V_CC = 3.3 V
40
30
V_CC = 2.5 V
20
10
V_CC = 1.8 V
0
-40 -15
10
35
60 85
Temperature, T_A (°C)
I/O SINK CURRENT
vs
OUTPUT LOW VOLTAGE
20
18 ^{VCC = 1.8 V}
16
T_A = –40°C
14
T_A = 25°C
12
10
8
6
4
T_A = 85°C
2
0
0 0.1 0.2 0.3 0.4 0.5 0.6
Output Low Voltage, V_OL (V)
STANDBY SUPPLY CURRENT
vs
TEMPERATURE
9
SCL = V_CC
8 _{All I/Os unloaded}
7
V_CC = 5 V
6
V_CC = 3.3 V
5 _{VCC = 2.5 V}
4
3
2
1
V_CC = 1.8 V
0
–40 –15 10
35
60 85
Temperature, T_A (°C)
I/O SINK CURRENT
vs
OUTPUT LOW VOLTAGE
24
22 ^{VCC = 2.5 V}
20
T_A = –40°C
18
16
T_A = 25°C
14
12
10
8
6
T_A = 85°C
4
2
0
0 0.1 0.2 0.3 0.4 0.5 0.6
Output Low Voltage, V_OL (V)
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
100
90
f_SCL = 400 kHz
All I/Os unloaded
80
70
60
50
40
30
20
10
0
1.65 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Supply Voltage, V_CC (V)
I/O SINK CURRENT
vs
OUTPUT LOW VOLTAGE
50
V_CC = 3.3 V
45
T_A = –40°C
40
35
T_A = 25°C
30
25
20
15
T_A = 85°C
10
5
0
0 0.1 0.2 0.3 0.4 0.5 0.6
Output Low Voltage, V_OL (V)
I/O SINK CURRENT
vs
OUTPUT LOW VOLTAGE
50
V_CC = 5 V
45
40
T_A = –40°C
35
T_A = 25°C
30
25
20
15
10
T = 85°C
A
5
0
0
0.1 0.2 0.3 0.4 0.5
Output Low Voltage, V_OL (V)
I/O LOW VOLTAGE
vs
TEMPERATURE
400
350
V_CC = 5 V, I_SINK = 10 mA
300
250
200
150
V_CC = 1.8 V, I_SINK = 10 mA
100
V_CC = 5 V, I_SINK = 1 mA
50 ^VCC ^{= 1.8 V, I}SINK ^{= 1 mA}
0
−40 −15 10
35
60 85
Temperature, T_A (°C)
I/O SOURCE CURRENT
vs
OUTPUT HIGH VOLTAGE
20
V_CC = 1.8 V
16
T_A = –40°C
T_A = 25°C
12
8
T_A = 85°C
4
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
V_CC – V_OH (V)
Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): TCA6424
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