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TCA9538 Datasheet(PDF) 1 Page - Texas Instruments |
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TCA9538 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 37 page TCA9538 Peripheral Devices I2C or SMBus Master (e.g. Processor) SDA SCL INT P0 P1 RESET P2 P3 P4 P5 P6 P7 VCC A1 GND A0 • , ENABLE, or control inputs • or status outputs • LEDs RESET INT Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TCA9538 SCPS199C – AUGUST 2014 – REVISED OCTOBER 2015 TCA9538 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Configuration Registers 1 Features 2 Applications 1 • Low Standby Current Consumption • Servers • I2C to Parallel Port Expander • Routers (Telecom Switching Equipment) • Open-Drain Active-Low Interrupt Output • Personal Computers • Active-Low Reset Input • Personal Electronics (e.g. Gaming Consoles) • Operating Power-Supply Voltage Range of 1.65 V • Industrial Automation to 5.5 V • Products With GPIO-Limited Processors • 5-V Tolerant I/O Ports 3 Description • 400-kHz Fast I2C Bus The TCA9538 is a 16-pin device that provides 8 bits • Two Hardware Address Pins Allow up to Four of general purpose parallel input/output (I/O) Devices on the I2C/SMBus expansion for the two-line bidirectional I2C bus (or • Input/Output Configuration Register SMBus) protocol. The device can operate with a • Polarity Inversion Register power supply voltage ranging from 1.65 V to 5.5 V. The device supports both 100-kHz (Standard-mode) • Power-Up With All Channels Configured as Inputs and 400-kHz (Fast-mode) clock frequencies. I/O • No Glitch on Power Up expanders such as the TCA9538 provide a simple • Noise Filter on SCL/SDA Inputs solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, etc. • Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs The features of the TCA9538 include an interrupt that • Latch-Up Performance Exceeds 100 mA Per is generated on the INT pin whenever an input port changes state. The A0 and A1 hardware selectable JESD 78, Class II address pins allow up to four TCA9538 devices on • ESD Protection Exceeds JESD 22 the same I2C bus. The device can also be reset to its – 2000-V Human-Body Model (A114-A) default sate by using the RESET feature or by cycling – 1000-V Charged-Device Model (C101) the power supply and causing a power-on reset. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TSSOP (16) 5.00 mm × 4.40 mm TCA9538 SSOP (16) 6.20 mm × 5.30 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Simplified Block Diagram 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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