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TCA7408

Texas Instruments
Part Number TCA7408
Manufacturer Texas Instruments
Description Low-Voltage 8-Bit I2C and SMBus I/O Expander
Published Oct 3, 2019
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community TCA7408 SCPS235D – NOVEMBER 2011 ...
Datasheet PDF File TCA7408 PDF File

TCA7408
TCA7408

Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community TCA7408 SCPS235D – NOVEMBER 2011 – REVISED APRIL 2018 TCA7408 Low-Voltage 8-Bit I2C and SMBus I/O Expander With Interrupt Output, RESET Input, I/O Direction Registers, and Programmable Pull-Up/Pull-Down 1 Features •1 Operating Power-Supply Voltage Range of 1.
65 to 3.
6 V • Allows Bidirectional Voltage-Level Translation and GPIO Expansion Between 1.
8-V, 2.
5-V, 3.
3-V GPIO Port and – 1.
8-V SCL/SDA – 2.
5-V SCL/SDA – 3.
3-V SCL/SDA – 5-V SCL/SDA • Standby Current Consumption of < 2 µA at 1.
8 V • Active Current Consumption of: – < 2 µA at 1.
8-V 100-kHz Clock – < 5 µA at 1.
8-V 400-kHz Clock • 100-kHz, 400-kHz Fast Mode • Internal Power-on-Reset and Watchdog Timer • Fail Safe I2C, INT, and RESET lines • Noise Filter on SCL/SDA and Inputs • Active-Low Reset (RESET) Input • Open-Drain Active-Low Interrupt (INT) Output • Programmable Pull-up/Pull-down Resistors for GPIO Inputs • Programmable Edge Detection for Generating Interrupts • Interrupt Latching • Software Reset • Input/Output Direction Register • Power Up With All Channels Configured as 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) – 1000-V Charged-Device Model (C101) • Package: µCSP 16 Ball (4 x 4), 2.
0 mm x 2.
0 mm, 0.
5-mm pitch, 0.
55-mm height 3 Description TCA7408 is an 8-bit I/O expander for the two-line bidirectional bus (I2C) and is designed to provide general-purpose remote I/O expansion through the I2C interface.
The major benefit of this device is its wide VCC range.
It can operate from 1.
65 V to 3.
6 V on the GPIO-port side and 1.
65 V to 5.
5 V on the SDA/SCL side.
This allows the TCA7408 to interface with next-generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power.
The bidirectional ...


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