Philips Semiconductors

Product data sheet

PCA9551

2004 Oct 01

13

AC SPECIFICATIONS

SYMBOL

PARAMETER

STANDARD MODE

FAST MODE

UNITS

MIN

MAX

MIN

MAX

Operating frequency

0

100

0

400

kHz

Bus free time between STOP and START conditions

4.7

—

1.3

—

µs

Hold time after (repeated) START condition

4.0

—

0.6

—

µs

Repeated START condition set-up time

4.7

—

0.6

—

µs

Set-up time for STOP condition

4.0

—

0.6

—

µs

Data in hold time

0

—

0

—

ns

—

600

—

600

ns

—

600

—

600

ns

—

1500

—

600

ns

Data set-up time

250

—

100

—

ns

Clock LOW period

4.7

—

1.3

—

µs

Clock HIGH period

4.0

—

0.6

—

µs

Clock/Data fall time

—

300

300

ns

Clock/Data rise time

—

1000

300

ns

Pulse width of spikes that must be suppressed by the

input filters

—

50

—

50

ns

Port Timing

Output data valid

—

200

—

200

ns

Input data set-up time

100

—

100

—

ns

Input data hold time

1

—

1

—

µs

Reset

Reset pulse width

6

—

6

—

ns

Reset recovery time

0

—

0

—

ns

Time to reset

400

—

400

—

ns

NOTES:

4. Resetting the device while actively communicating on the bus may cause glitches or errant STOP conditions.