TCA9543A_15 Datasheet, PDF (19/32 Pages) Texas Instruments – TCA9543A Low Voltage 2-Channel I2C Bus Switch With Interrupt Logic And Reset

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Typical Application (continued)
10.2.3 Application Curves
TCA9543A
SCPS206A – MARCH 2014 – REVISED FEBRUARY 2015
5
25
25ºC (Room Temperature)
85ºC
4
-40ºC
20
Standard-mode
Fast-mode
3
15
2
10
1
5
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
V_CC (V)
D007
Space
Space
space_space
space_space
0
0 50 100 150
Standard-mode
(f_SCL= 100 kHz, t_r = 1 µs)
200 250 300 350 400 450
C_b (pF)
D008
Fast-mode
(f_SCL= 400 kHz, t_r= 300 ns)
Figure 17. Pass-Gate Voltage (V_pass) vs Supply Voltage
(V_CC) at Three Temperature Points
Figure 18. Maximum Pull-Up Resistance (R_p(max)) vs Bus
Capacitance (C_b)
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
V_DPUX > 2V
V_DPUX <= 2
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
V_DPUX (V)
D009
V_OL = 0.2*V_DPUX, I_OL = 2 mA when V_DPUX ≤ 2 V
V_OL = 0.4 V, I_OL = 3 mA when V_DPUX > 2 V
Figure 19. Minimum Pull-Up Resistance (R_p(min)) vs Pull-Up Reference Voltage (V_DPUX)
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