• I
2C 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 1 μA
• 5-V Tolerant I/O ports
• 400-kHz Fast I2C bus
• Hardware address pin allows two TCA6408A
Devices on the same I2C/SMBus bus
• Active-low reset ( RESET) input
• Open-drain active-low interrupt ( INT) output
• Input and 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
• Schmitt-trigger action allows slow input transition
and better switching noise immunity at the SCL
and SDA inputs
• ESD Protection exceeds JESD 22
– 2000-V Human body model (A114-A)
– 1000-V Charged-device model (C101)