1 Features

• Operating power-supply voltage range of 1.08V to

3.6V

• Allows bidirectional voltage-level translation and

GPIO expansion between 1.2V, 1.8V, 2.5V, and

3.3V I2C bus and p-ports

• Low standby current consumption of 1μA typical at

1.8V

• 1-MHz fast mode plus I2C bus

• Hardware address pin allows two devices on the

same I2C, SMBus bus

• Active-low reset input (RESET )

• Open-drain active-low interrupt output (INT )

• Input or output configuration register

• Polarity inversion register

• Configurable I/O drive strength register

• Pull-up and pull-down resistor configuration

register

• Internal power-on reset

• Noise filter on SCL or SDA inputs

• Latched outputs with high-current drive maximum

capability for directly driving LEDs

• Latch-up performance exceeds 100mA per JESD

78, class II

• ESD protection exceeds JESD 22

– 4000V Human-body model (A114A)

– 1000V Charged-device model (C101)

2 Applications

• Servers

• Routers (telecom switching equipment)

• Personal computers

• Personal electronics

• Industrial automation

• Gaming consoles

• Products with GPIO-limited processors

3 Description

The TCAL6416 device provides general purpose

parallel input/output (I/O) expansion for the two-line

bidirectional I2C bus (or SMBus) protocol. The device

can operate with a power supply voltage ranging from

1.08V to 3.6V on the I2C bus side (VCCI) and a power

supply voltage ranging from 1.08V to 3.6V on the Pport

side (VCCP).

The device supports 100kHz (Standard-mode),

400kHz (Fast-mode), and 1MHz (fast-mode-plus)

I2C clock frequencies. I/O expanders such as the

TCAL6416 provide a simple solution when additional

I/Os are needed for switches, sensors, push-buttons,

LEDs, fans, etc.

The TCAL6416 has Agile I/O ports which include

additional features designed to enhance the I/O

performance in terms of speed, power consumption

and EMI. The additional features are: programmable

output drive strength, programmable pull-up and pulldown

resistors, latchable inputs, maskable interrupt,

interrupt status register, and programmable opendrain

or push-pull outputs.