1 Features

• I2C 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, 2.5-V, 3.3-V, and

5-V I2C Bus and P-ports

• Low standby current consumption of 3 μA

• 5-V Tolerant I/O ports

• 400-kHz Fast I2C bus

• Hardware address pin allows two TCA6416A

devices on the same I2C/SMBus bus

• Active-low reset input ( RESET)

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

• Input/output configuration register

• Polarity inversion register

• Internal power-on reset

• Power-up with all channels configured as inputs

• No glitch on power up

• Noise filter on SCL and SDA inputs

• Latched outputs with high-current 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)

– 200-V Machine model (A115-A)

– 1000-V Charged-device model (C101)

2 Applications

. Servers

. Routers (telecom switching equipment)

. Personal computers

. Personal electronics (for example, gaming

consoles)

. Industrial automation

. Products with GPIO-limited processors

3 Description

The TCA6416A is a 24-pin device that provides 16-

bits of 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 1.65 V to 5.5 V on

the I2C bus side (VCCI) and a power supply voltage

ranging from 1.65 V to 5.5 V on the P-port side

(VCCP).

The device supports both 100-kHz (Standard-mode)

and 400-kHz (Fast-mode) clock frequencies. I/O

expanders such as the TCA6416A provide a simple

solution when additional I/Os are needed for switches,

sensors, push-buttons, LEDs, fans, and so forth.