PCA9549_1

© Koninklijke Philips Electronics N.V. 2006. All rights reserved.

Product data sheet

Rev. 01 — 11 July 2006

7 of 24

Philips Semiconductors

PCA9549

Figure 7 shows the voltage characteristics of the pass gate transistors (note that the

PCA9549 is only tested at the points specified in Section 9 “Static characteristics”). In

or lower than the lowest bus voltage. For example, if the main bus was running at 5 V, and

(maximum) will be at 2.7 V when the PCA9549 supply voltage is 3.5 V or lower so the

PCA9549 supply voltage could be set to 3.3 V. Pull-up resistors can then be used to bring

the bus voltages to their appropriate levels (see Figure 16).

(1) maximum

(2) typical

(3) minimum

Fig 7.

2.0

5.5

4.5

3.0

4.0

002aaa964

3.0

2.0

4.0

5.0

(V)

1.0

3.5

5.0

2.5

(1)

(2)

(3)