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TCA9554APWR Datasheet(PDF) 7 Page - Texas Instruments

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Part # TCA9554APWR
Description  Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers
PDF  39 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TCA9554APWR Datasheet(HTML) 7 Page - Texas Instruments

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TCA9554A
www.ti.com
SCPS196D – DECEMBER 2010 – REVISED AUGUST 2015
6.6 I
2C Interface Timing Requirements
over operating free-air temperature range (unless otherwise noted) (see Figure 10)
STANDARD MODE
FAST MODE
I2C BUS
I2C BUS
UNIT
MIN
MAX
MIN
MAX
fscl
0
100
0
400
kHz
I2C clock frequency
tsch
4
0.6
µs
I2C clock high time
tscl
4.7
1.3
µs
I2C clock low time
tsp
50
50
ns
I2C spike time
tsds
250
100
ns
I2C serial-data setup time
tsdh
0
0
ns
I2C serial-data hold time
ticr
1000
20
300
ns
I2C input rise time
ticf
300
20 × (VDD / 5.5 V)
300
ns
I2C input fall time
tocf
10-pF to 400-pF bus
300
20 × (VDD / 5.5 V)
300
ns
I2C output fall time
tbuf
4.7
1.3
µs
I2C bus free time between stop and start
tsts
4.7
0.6
µs
I2C start or repeated start condition setup
tsth
4
0.6
µs
I2C start or repeated start condition hold
tsps
4
0.6
µs
I2C stop condition setup
tvd(data)
Valid data time
SCL low to SDA output valid
3.45
0.9
ns
Valid data time of
ACK signal from SCL low to
tvd(ack)
3.45
0.9
µs
ACK condition
SDA (out) low
Cb
400
400
pF
I2C bus capacitive load
6.7 Switching Characteristics
over operating free-air temperature range (unless otherwise noted) (see Figure 11 and Figure 12)
STANDARD MODE
FAST MODE
FROM
TO
I2C BUS
I2C BUS
PARAMETER
UNIT
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
tiv
Interrupt valid time
P port
INT
4
4
µs
tir
Interrupt reset delay time
SCL
INT
4
4
µs
tpv
Output data valid
SCL
P7–P0
350
350
ns
tps
Input data setup time
P port
SCL
100
100
ns
tph
Input data hold time
P port
SCL
1
1
μs
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