TCA6408ARGTR

The TCA6408A is a 16-pin device that provides 8-
bits of general purpose parallel input/output (I/O)
expansion for the two-line bidirectional I2C bus (or
SMBus) protocol. This device can operate with a
power supply voltage ranging from 1.65 V to 5.5 V
on both the I2C bus side (VCCI) and on the P-port side
(VCCP). This allows the TCA6408A to interface with
next-generation microprocessors and microcontrollers
on the SDA/SCL side, where supply levels are
dropping down to conserve power. In contrast to
the dropping power supplies of microprocessors and
microcontrollers, some PCB components such as
LEDs remain at a 5-V power supply.
The device supports both 100-kHz (Standard-mode)
and 400-kHz (Fast-mode) clock frequencies. I/O
expanders such as the TCA6408A provide a simple
solution when additional I/Os are needed for switches,
sensors, push-buttons, LEDs, fans, and so forth.

Categories: I/O Expanders, Networks and Interfaces

Download Details PDF

Notice:

In stock will ship in 2 days. Real-time inventory pls confirm with us.

INQUIRY ONLINE

SPECIFICATION

• 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 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)