TCA9538 Datasheet, PDF (7/37 Pages) Texas Instruments – Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander

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6.7 RESET Timing Requirements
over operating free-air temperature range (unless otherwise noted)
PARAMETER
t_w
t_REC
t_RESET
Reset pulse duration
Reset recovery time
Time to reset; V_CC = 2.3 - 5.5 V
Time to reset; V_CC = 1.65 - 2.3 V
TCA9538
SCPS199C – AUGUST 2014 – REVISED OCTOBER 2015
STANDARD MODE
I²C BUS
MIN
MAX
4
0
400
550
FAST MODE
I²C BUS
MIN
MAX
4
0
400
550
UNIT
ns
ns
ns
6.8 Switching Characteristics
over operating free-air temperature range (unless otherwise noted) (see Figure 10 and Figure 11)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
STANDARD MODE
I²C BUS
MIN
MAX
t_iv
Interrupt valid time
t_ir
Interrupt reset delay time
t_pv
Output data valid; V_CC = 2.3 - 5.5 V
Output data valid; V_CC = 1.65 - 2.3 V
t_ps
Input data setup time
t_ph
Input data hold time
P port
SCL
SCL
P port
P port
INT
INT
P7–P0
SCL
SCL
4
4
200
300
100
1
FAST MODE
I²C BUS
MIN MAX
4
4
200
300
100
1
UNIT
μs
μs
ns
ns
μs
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