
Philips Semiconductors
Product data
PCA9556
Octal SMBus and I2C registered interface
2002 Mar 28
11
AC SPECIFICATIONS
SYMBOL
PARAMETER
LIMITS
UNITS
SYMBOL
PARAMETER
MIN
MAX
UNITS
fSBM
SMB operating frequency
10
100
KHz
tBUF
Bus free time between stop and start conditions
4.7
—
s
tHO:STA
Hold time after (repeated) start condition
4.0
—
s
tSU:STA
Repeated start condition setup time
4.7
—
s
tHO:DAT
Data hold time
300
—
ns
tSU:DAT
Data setup time
250
—
ns
tLOW
Clock LOW period
4.7
—
s
tHIGH
Clock HIGH period
4.0
—
s
tF
Clock/Data fall time
—
300
ns
tR
Clock/Data rise time
—
1000
ns
Port Timing
tPV
Output data valid
—
4
s
tPS
Input data setup time
0
—
s
tPH
Input data hold time
4
—
s
Reset
tW
Reset pulse width
2
—
ns