TCA9800 Datasheet, PDF (22/36 Pages) Texas Instruments – Level-Translating I2C Bus Buffer/Repeater

TCA9800
SCPS264 – MARCH 2017
www.ti.com
10.2.1.3 Application Curves
The application curves can be used to select the appropriate part for a given design requirement, or to estimate
the rise-time.
400
TCA9803 (1.65 V)
400
TCA9803 (1.65 V)
300
TCA9801 (1.65 V)
TCA9803 (3.6 V)
200
TCA9802 (1.65 V)
TCA9800 (1.65 V)
TCA9802 (3.6 V)
100
TCA9801 (3.6 V)
0
TCA9800 (3.6 V)
0 30 60 90 120 150 180 210 240 270 300
t_r - Rise Time (ns)
D001
Figure 22. Maximum Load Capacitance vs Rise Time (400-
kHz I²C)
300
TCA9801 (1.65 V)
TCA9803 (3.6 V)
200
TCA9802 (1.65 V)
TCA9800 (1.65 V)
TCA9802 (3.6 V)
100
TCA9801 (3.6 V)
0
TCA9800 (3.6 V)
0 30 60 90 120 150 180 210 240 270 300
t_r - Rise Time (ns)
D001
Figure 23. Maximum Load Capacitance vs Rise Time (100-
kHz I²C)
400
TCA9800
TCA9801
TCA9802
300
TCA9803
V_CCB = 1.65 V
200
400
TCA9800
TCA9801
TCA9802
300
TCA9803
V_CCB = 1.8 V
200
100
100
0
0
50
100
150
200
250
300
t_r - Rise Time (ns)
D001
Figure 24. Maximum Load Capacitance vs Rise Time (400-
kHz I²C, V_CCB = 1.65 V)
400
TCA9800
TCA9801
TCA9802
300
TCA9803
V_CCB = 2.5 V
200
0
0
50
100
150
200
250
300
t_r - Rise Time (ns)
D001
Figure 25. Maximum Load Capacitance vs Rise Time (400-
kHz I²C, V_CCB = 1.8 V)
400
TCA9800
TCA9801
TCA9802
300
TCA9803
V_CCB = 3.3 V
200
100
100
0
0
50
100
150
200
250
300
t_r - Rise Time (ns)
D001
Figure 26. Maximum Load Capacitance vs Rise Time (400-
kHz I²C, V_CCB = 2.5 V)
0
0
50
100
150
200
250
300
t_r - Rise Time (ns)
D001
Figure 27. Maximum Load Capacitance vs Rise Time (400-
kHz I²C, V_CCB = 3.3 V)
22
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