PI4IOE5V6416

Description

The PI4IOE5V6416 is a 16-bit general-purpose I/O expander that provides remote I/O expansion for most microcontroller families via the I²C-bus interface.

It provides 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.

It can operate from 1.65V to 5.5V on the GPIO-port side and 1.65V to 5.5V on the SDA/SCL side. This allows the PI4IOE5V6416 to interface with next generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power.

The bidirectional voltage-level translation in the PI4IOE5V6416 is provided through V_{DD(I2C_bus)}. V_{DD(I2C_bus)} should be connected to the VDD of the external SCL/SDA lines. The voltage level on the GPIO-port of the PI4IOE5V6416 is determined by V_DD(P).

At power on, the I/Os are configured as inputs; however, the system master can enable the I/Os as either inputs or outputs by writing to the I/O direction bits. The data for each input or output is kept in the corresponding Input or Output register. All registers can be read by the system master.

PI4IOE5V6416 has open-drain interrupt INT output pin that goes LOW when the input state of a GPIO-port changes from the input-state default register value. The device also has an interrupt masking feature by which the user can mask the interrupt from an individual GPIO-port.

Feature(s)

 Operation power supply voltage from 1.65V to 5.5V

• Allows bidirectional voltage-level translation and GPIO expansion between:
  • 8/2.5/3.3/5V SCL/SDA and 1.8/2.5/3.3/5V Port
• Low standby current consumption:
  • 5μA typical at 5V V_DD
  • 1μA typical at 3.3V V_DD
• 400kHz I²C-bus interface
• Compliant with the I²C-bus Fast and Standard modes
• Programmable Push-pull/Open-drain output stages
• Programmable output drive strength and pull-up/down resistor
• Power-on reset
• Active LOW open-drain interrupt output
• Active LOW reset input
• Latch-up tested (exceeds 100mA)
• Packaging (Pb-free & Green):
  • 24-Pin, TQFN (ZD24)
  • 24-Pin, TSSOP (L24)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• Server/Storage/Networking