TCA9800 Datasheet, PDF (6/36 Pages) Texas Instruments – Level-Translating I2C Bus Buffer/Repeater

TCA9800
SCPS264 – MARCH 2017
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
I_CCA + I_CCB Total quiescent supply current
I_I
Input leakage current
C_IO
I/O Capacitance
SDAA, SCLA
SDAB, SCLB
SDAA, SCLA
SDAB, SCLB
V_CCA = V_CCB = 1.8 V,
SDAA/SCLA = V_CCA,
SDAB/SCLB = V_CCB
V_I = V_CCA, EN = GND
V_I = GND, EN = GND
V_CCB = 0 V, V_I = 3.6 V
V_I = 0 V or 3.3 V, f = 1 MHz
V_CCB = GND, V_I = 0 V, f = 1 MHz
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MIN TYP⁽¹⁾ MAX UNIT
18
µA
±10
±10
µA
±10
2
10
pF
8
7.6 Timing Requirements
PARAMETER
f_SCL(MAX)
Max SCL clock frequency
Port A
t_r ⁽¹⁾
Rise time
t_f ⁽¹⁾
Fall time
Port B; V_CCB = 1.65 V
Port B; V_CCB = 2.5 V
Port B; V_CCB = 3.6 V
Port A
Port B
t_PHL ⁽¹⁾
Port A to Port B
Propagation delay high-to-low
Port B to Port A
t_PLH ⁽¹⁾
Port A to Port B
Propagation delay low-to-high
Port B to Port A
MIN
TYP
MAX
UNIT
100
kHz
57
70
66
110
ns
100
170
144
270
9
30
ns
35
85
75
200
ns
85
250
40
150
ns
100
350
(1) Times are specified with loads of 1.35 kΩ and 50 pF on A-side and 50 pF on B-side. Different load resistance and capacitance alter the
rise and fall times, thereby changing the propagation delay.
7.7 Switching Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
t_startup
t_en
t_dis
Startup time
Enable time
Disable time
MIN
TYP
MAX
UNIT
72
340
µs
280
1000
ns
740
1800
ns
6
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