PCAL6408A Datasheet, PDF(26/48 Page) NXP Semiconductors – Low-voltage translating, 8-bit I2C-bus/SMBus I/O expander with interrupt output, reset, and configuration registers

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PCAL6408A Datasheet, PDF (26/48 Pages) NXP Semiconductors – Low-voltage translating, 8-bit I2C-bus/SMBus I/O expander with interrupt output, reset, and configuration registers

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NXP Semiconductors

PCAL6408A

Low-voltage translating, 8-bit I2C-bus/SMBus I/O expander

Table 23. Static characteristics â¦continued

Tamb = ï40 ï°C to +85 ï°C; VDD(I2C-bus) = 1.65 V to 5.5 V; unless otherwise specified.

Symbol Parameter

Conditions

ïIDD

additional quiescent

supply current[6]

SCL, SDA, RESET;

one input at VDD(I2C-bus) ï 0.6 V,

other inputs at VDD(I2C-bus) or VSS;

VDD(P) = 1.65 V to 5.5 V

input capacitance

P port, ADDR;

one input at VDD(P) ï 0.6 V,

other inputs at VDD(P) or VSS;

VDD(P) = 1.65 V to 5.5 V

SCL; VI = VDD(I2C-bus) or VSS;

VDD(P) = 1.65 V to 5.5 V

Cio

input/output capacitance SDA; VI/O = VDD(I2C-bus) or VSS;

VDD(P) = 1.65 V to 5.5 V

P port; VI/O = VDD(P) or VSS;

VDD(P) = 1.65 V to 5.5 V

Rpu(int) internal pull-up resistance input/output

Rpd(int)

internal pull-down

resistance

input/output

Min Typ[1] Max Unit

25 ïA

80 ïA

7.5 8.5 pF

50 100 150 kï

[1] All typical values are at nominal supply voltage (1.8 V, 2.5 V, 3.3 V or 5 V VDD) and Tamb = 25 ï°C.

[2] When power (from 0 V) is applied to VDD(P), an internal power-on reset holds the PCAL6408A in a reset condition until VDD(P) has

reached VPOR. At that time, the reset condition is released, and the PCAL6408A registers and I2C-bus/SMBus state machine initialize to

their default states. After that, VDD(P) must be lowered to below 0.2 V and back up to the operating voltage for a power-reset cycle.

[3] The total current sourced by all I/Os must be limited to 80 mA.

[4] Each I/O must be externally limited to a maximum of 25 mA, for a device total of 200 mA.

[5] Typical value for Tamb = 25 ï°C. VOL = 0.4 V and VDD = 3.3 V. Typical value for VDD < 2.5 V, VOL = 0.6 V.

[6] Internal pull-up/pull-down resistor disabled.

PCAL6408A

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 2 â 6 December 2012

26 of 48

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