PCA9554

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4

Symbol

Parameter

Units

Min

Max

Min

Max

Clock Frequency

100

400

kHz

START Condition Hold Time

4

0.6

ms

Low Period of SCL Clock

4.7

1.3

ms

High Period of SCL Clock

4

0.6

ms

START Condition Setup Time

4.7

0.6

ms

Data In Hold Time

0

0

ms

Data In Setup Time

250

100

ns

SDA and SCL Rise Time

1000

300

ns

SDA and SCL Fall Time

300

300

ns

STOP Condition Setup Time

4

0.6

ms

Bus Free Time Between STOP and START

4.7

1.3

ms

SCL Low to Data Out Valid

3.5

0.9

ms

Data Out Hold Time

100

50

ns

Noise Pulse Filtered at SCL and SDA Inputs

100

100

ns

Symbol

Parameter

Min

Max

Units

PORT TIMING

Output Data Valid

200

ns

Input Data Setup Time

100

ns

Input Data Hold Time

1

ms

INTERRUPT TIMING

Interrupt Valid

4

ms

Interrupt Reset

4

ms

8. Test conditions according to “AC Test Conditions” table.

9. This parameter is characterized initially and after a design or process change that affects the parameter. Not 100% tested.

Table 6. A.C. TEST CONDITIONS

Input Rise and Fall time

≤ 10 ns

CMOS Input Voltages

CMOS Input Reference Voltages

TTL Input Voltages

0.4 V to 2.4 V

TTL Input Reference Voltages

0.8 V, 2.0 V

Output Reference Voltages

Output Load: SDA, INT

Output Load: I/Os