PCA9555N datasheet(19/34 Pages) NXP

Part #	PCA9555N

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

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Manufacturer	NXP [NXP Semiconductors]

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19 / 34 page

PCA9555_8

Product data sheet

Rev. 08 — 22 October 2009

19 of 34

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.

(1) IOH = −8mA

(2) IOH = −10 mA

(1) IOH = −8mA

(2) IOH = −10 mA

Fig 20. VOH maximum

Fig 21. VOH minimum

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

2.0

5.0

4.0

3.0

6.0

VOH

(V)

VDD (V)

2.7

5.5

3.6

002aac706

(1)

(2)

2.5

3.5

4.5

VOH

(V)

1.5

VDD (V)

2.3

4.75

3.0

002aac707

(1)

(2)

0

1.2

0.8

0.4

1.6

IDD

(mA)

number of I/Os

002aac705

all 1s

all 0s

one 0

three 0s

(1)

(2)

(3)

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PCA9555N Datasheet(PDF) 19 Page - NXP Semiconductors

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