Philips Semiconductors

Product data sheet

PCA9517

2004 Oct 05

8

AC ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

Propagation delay, B to A side

Waveform 3; Note 3

100

170

250

ns

Propagation delay, B to A side

30

110

ns

10

66

300

ns

Transition time, A side

Waveform 2

10

20

30

ns

Transition time, A side

1

105

ns

20

70

175

ns

Propagation delay, A to B side

Waveform 2; Note 2

25

53

110

ns

Propagation delay, A to B side

Waveform 2; Note 2

60

79

230

ns

Transition time, B side

Waveform 1

120

140

170

ns

Transition time, B side

Waveform 1

30

48

90

ns

Enable HIGH before Start condition

Note 6

100

–

–

ns

Enable HIGH after Stop condition

Note 6

100

–

–

ns

NOTES:

1. Times are specified with loads of 1.35 k

Ω pull-up resistance and 57 pF load capacitance on the B side and 167 Ω pull-up and 57 pF load

capacitance on the A side. Different load resistnace and capacitance will alter the RC time constant, thereby changing the propagation delay

and transition times.

6. The enable pin, EN, should only change state when the global bus and the repeater port are in an idle state.

AC WAVEFORMS

3.3 V

0.1 V

1.5 V

1.5 V

INPUT

OUTPUT

1.2 V

80%

20%

0.6 V

0.6 V

80%

20%

SW02169

Waveform 1.

INPUT

OUTPUT

3.3 V

80%

20%

1.5 V

1.5 V

80%

20%

SW02170

Waveform 2.

0.5 V

INPUT

SDAB, SCLB

OUTPUT

SCLA, SDAA

SW02341

Waveform 3.