TCA9538 Texas instruments

TCA9538

Уточнить цену

TCA9538

Уточнить цену

СРАВНИТЬ

В СРАВНЕНИИ

Уточнить цену

Описание

The TCA9538 is a 16-pin device that provides 8 bits of general purpose parallel input and 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. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA9538 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, etc. The features of the TCA9538 include an interrupt that is generated on the INT pin whenever an input port changes state. The A0 and A1 hardware selectable address pins allow up to four TCA9538 devices on the same I2C bus. The device can also be reset to its default sate by using the RESET feature or by cycling the power supply and causing a power-on reset.

Low Standby Current Consumption
I²C to Parallel Port Expander
Open-Drain Active-Low Interrupt Output
Active-Low Reset Input
Operating Power-Supply Voltage Range of 1.65 V to 5.5 V
5-V Tolerant I/O Ports
400-kHz Fast I²C Bus
Two Hardware Address Pins Allow up to Four Devices on the I²C/SMBus
Input and Output Configuration Register
Polarity Inversion Register
Power-Up With All Channels Configured as Inputs
No Glitch on Power Up
Noise Filter on SCL/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)
- 1000-V Charged-Device Model (C101)

Number of I/Os	8
Features	Configuration registers, Interrupt pin, Reset pin
Supply voltage (min) (V)	1.65
Supply voltage (max) (V)	5.5
Addresses	4
Rating	Catalog
Frequency (max) (MHz)	0.4
Operating temperature range (°C)	-40 to 85