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PCA9555

16-bit I2C-bus and SMBus I/O port with interrupt

NXP Semiconductors. 

NXP Semiconductors

PCA9555

16-bit I2C-bus and SMBus I/O port with interrupt

[2] Each I/O must be externally limited to a maximum of 25 mA and each octal (IO0_0 to IO0_7 and IO1_0 to IO1_7) must be limited to a

maximum current of 100 mA for a device total of 200 mA.

[3] The total current sourced by all I/Os must be limited to 160 mA.

6.0

VOH

(V)

5.0

002aac706

4.0

3.0

2.0

2.7

(1)

(2)

3.6

(1) IOH = −8 mA

(2) IOH = −10 mA

Fig 20. VOH maximum

5.5

VDD (V)

1.6

IDD

(mA)

1.2

0.8

4.5

VOH

(V)

3.5

2.5

1.5

2.3

3.0

(1) IOH = −8 mA

(2) IOH = −10 mA

Fig 21. VOH minimum

002aac705

(1)

(2)

(3)

0.4

0

all 1s

one 0

VDD = 5.5 V; VI/O = 5.5 V; A2, A1, A0 set to logic 0.

(1) Tamb = −40 °C

(2) Tamb = +25 °C

(3) Tamb = +85 °C

Fig 22. IDD versus number of I/Os held LOW

three 0s

all 0s

number of I/Os

002aac707

(1)

(2)

4.75

VDD (V)

PCA9555_8

Product data sheet

Rev. 08 — 22 October 2009

© NXP B.V. 2009. All rights reserved.

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