Products > Integrated Circuits (ICs) > PCAL6416APW
  • PCAL6416APW
  • PCAL6416APW 0
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Low-voltage translating 16-bit I�C-bus/SMBus I/O expander with interrupt output, reset, and configuration registers

Manufacturer :
NXP Semiconductor
Package/Case :
Product Categories :
Interfaces ; I2C, SPI, Serial Interface Devices ; I2C General Purpose I/O
RoHs Status:
Lead free / RoHS Compliant

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PCAL6416APW Product Details

The PCAL6416APW is a 16-bit general purpose I/O expander that provides remote I/O expansion for most microcontroller families via the I�C-bus interface. NXP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in battery-powered mobile applications for interfacing to sensors, push buttons, keypad, etc. 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 PCAL6416APW has built-in level shifting feature that makes these devices extremely flexible in mixed signal environments where communication between incompatible I/O voltages is required. Its wide VDD range of 1.65 V to 5.5 V 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.


  • I²C-bus to parallel port expander
  • Operating power supply voltage range of 1.65 V to 5.5 V
  • Allows bidirectional voltage-level translation and GPIO expansion between:
    • 1.8 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V or 5 V Port P
    • 2.5 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V or 5 V Port P
    • 3.3 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V or 5 V Port P
    • 5 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V or 5 V Port P
  • Low standby current consumption:
    • 1.5 μA typical at 5 V VDD
    • 1.0 μA typical at 3.3 V VDD
  • Schmitt trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
    • Vhys = 0.18 V (typical) at 1.8 V
    • Vhys = 0.25 V (typical) at 2.5 V
    • Vhys = 0.33 V (typical) at 3.3 V
    • Vhys = 0.5 V (typical) at 5 V
  • 5 V tolerant I/O ports
  • Active LOW reset input (RESET)
  • Open-drain active LOW interrupt output (INT)
  • 400 kHz Fast-mode I²C-bus
  • Internal power-on reset
  • Power-up with all channels configured as inputs
  • No glitch on power-up
  • Noise filter on SCL/SDA inputs
  • Latched outputs with 25 mA drive maximum capability for directly driving LEDs
  • Latch-up performance exceeds 100 mA per JESD 78, Class II
  • ESD protection exceeds JESD 22
    • 2000 V Human-Body Model (A114-A)
    • 1000 V Charged-Device Model (C101)
  • Packages offered: TSSOP24, HWQFN24, UFBGA24, VFBGA24, XFBGA24, X2QFN24
Agile I/O features
  • Software backward compatible with PCA6416A with interrupts disabled at power-up
  • Pin-to-pin drop-in replacement with PCA6416A
  • Output port configuration: bank selectable push-pull or open-drain output stages
  • Interrupt status: read-only register identifies the source of an interrupt
  • Bit-wise I/O programming features:
    • Output drive strength: four programmable drive strengths to reduce rise and fall times in low-capacitance applications
    • Input latch: Input Port register values changes are kept until the Input Port registeris read
    • Pull-up/pull-down enable: floating input or pull-up/pull-down resistor enable
    • Pull-up/pull-down selection: 100 kΩ pull-up/pull-down resistor selection
    • Interrupt mask: mask prevents the generation of the interrupt when input changesstate to prevent spurious interrupts

PCAL6416APW Block Diagram
(Picture: Diagram)

Technical Parameters

Manufacturer NXP RoHs Status Lead free / RoHS Compliant
Packing Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube Package/Case TSSOP

PCAL6416APW Documents

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  • ****istian Re*****

    schneller Versand - Batterien wie beschrieben gut - Danke !!

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