NXP PCAL6408APWJ PCAL6408APWJ I/O Expander 8bit 400 kHz I2C 1.65 V 5.5 Tssop

The PCAL6408APWJ is an 8-bit I/O Expander that provides remote I/O expansion for most microcontroller families via the I²C-bus interface. The NXP I/O expander provides a simple solution when additional I/Os are needed while keeping interconnections to a minimum. In addition to providing a flexible set of GPIOs, it simplifies interconnection of a processor running at one voltage level to I/O devices operating at a different (usually higher) voltage level. The PCAL6408A has built-in level shifting feature that makes this device extremely flexible in mixed signal environments where communication between incompatible I/O voltages is required. Its wide VDD range of 1.65 to 5.5V on the dual power rail allows seamless communications with next-generation low voltage microprocessors and microcontrollers on the interface side (SDA/SCL) and peripherals at a higher voltage on the port side.

• Low standby current consumption
• Schmitt-trigger action allows slow input transition and better switching noise immunity
• Open-drain active LOW interrupt output (INT)\
• Internal power-ON reset
• Power-up with all channels configured as inputs
• No glitch on power-up
• Latched outputs with 25mA drive maximum capability for directly driving LEDs
• Latch-up performance exceeds 100 mA per JESD 78, class II
• Bank selectable push-pull or open-drain output stages
• Read-only register identifies the source of an interrupt

• Input port register values changes are kept until the input port register is read
• Floating input or pull-up/pull-down resistor enable
• Mask prevents the generation of the interrupt when input changes state
• 100kR Pull-up/down resistor

Applications

Communications & Networking

Warnings Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Other details

Brand	NXP
Part Number	PCAL6408APWJ
Quantity	Each (Supplied on Cut Tape)
Technical Data Sheet EN

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