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Switching Characteristics

PCA9554A

WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS

SCPS127A – SEPTEMBER 2006 – REVISED FEBRUARY 2007

over operating free-air temperature range (unless otherwise noted) (see Figure 10)

STANDARD MODE

FAST MODE

UNIT

MIN

MAX

MIN

MAX

0

100

0

400

kHz

4

0.6

µs

4.7

1.3

µs

50

50

ns

250

100

ns

0

0

ns

1000

300

ns

300

300

ns

10-pF to 400-pF bus

300

300

ns

4.7

1.3

µs

stop and start

4.7

0.6

µs

condition setup

4

0.6

µs

condition hold

4

0.6

µs

SCL low to SDA output valid

300

50

ns

ACK signal from SCL low to

0.3

3.45

0.1

0.9

µs

SDA (out) low

400

400

ns

(1)

over operating free-air temperature range (unless otherwise noted) (see Figure 11 and Figure 12)

STANDARD MODE

FAST MODE

FROM

TO

PARAMETER

UNIT

(INPUT)

(OUTPUT)

MIN

MAX

MIN

MAX

Interrupt valid time

P port

INT

4

4

µs

Interrupt reset delay time

SCL

INT

4

4

µs

Output data valid

SCL

P7–P0

200

200

ns

Input data setup time

P port

SCL

100

100

ns

Input data hold time

P port

SCL

1

1

µs

13

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