NXP Semiconductors

PCA9537

4-bit I2C-bus and SMBus low power I/O port with interrupt and reset

VDD = 2.3 V to 5.5 V; VSS = 0 V; Tamb = -40 °C to +85 °C; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VOL = 0.5 V

VDD = 2.3 V

[2] 8

10

-

mA

VDD = 3.0 V

[2] 8

14

-

mA

VDD = 4.5 V

[2] 8

17

-

mA

VOL = 0.7 V

VDD = 2.3 V

[2] 10

13

-

mA

VDD = 3.0 V

[2] 10

19

-

mA

IOL

LOW-level output current

VDD = 4.5 V

[2] 10

24

-

mA

IOH = -8 mA

VDD = 2.3 V

[3] 1.8

-

-

V

VDD = 3.0 V

[3] 2.6

-

-

V

VDD = 4.5 V

[3] 4.1

-

-

V

IOH = -10 mA

VDD = 2.3 V

[3] 1.7

-

-

V

VDD = 3.0 V

[3] 2.5

-

-

V

VOH

HIGH-level output voltage

VDD = 4.5 V

[3] 4.0

-

-

V

IL

leakage current

VI = VDD = VSS

-1

-

+1

μA

Ci

input capacitance

-

5

10

pF

Interrupt INT

IOL

LOW-level output current

VOL = 0.4 V

3

13

-

mA

IOH

HIGH-level output current

VOL = 0.4 V

-1

-

+1

μA

Select input RESET

VIL

LOW-level input voltage

-0.5

-

+0.8

V

VIH

HIGH-level input voltage

2.0

-

5.5

V

IL

leakage current

VI = VDD = VSS

-1

-

+1

μA

Table 10. Static characteristics...continued

[1]

VDD must be lowered to 0.2 V in order to reset part.

[2]

Each I/O must be externally limited to a maximum of 25 mA and the device must be limited to a maximum current of 100 mA.

[3]

The total current sourced by all I/Os must be limited to 85 mA.

10 Dynamic characteristics

Standard-

mode I2C-bus

Fast-mode I2C-bus

Symbol Parameter

Conditions

Min

Max

Min

Max

Unit

fSCL

SCL clock frequency

0

100

0

400

kHz

tBUF

bus free time between a STOP and

START condition

4.7

-

1.3

-

μs

Table 11. Dynamic characteristics

PCA9537

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© NXP B.V. 2021. All rights reserved.

Product data sheet

Rev. 7 — 8 September 2021

COMPANY PUBLIC

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