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TCA9554A Datasheet(PDF) 1 Page - Texas Instruments |
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TCA9554A Datasheet(HTML) 1 Page - Texas Instruments |
1 / 39 page TCA9554A Peripheral Devices I2C or SMBus Master (e.g. Processor) SDA SCL INT P0 P1 P2 P3 P4 P5 P6 P7 VCC A1 GND A0 • , ENABLE, or control inputs • or status outputs • LEDs RESET INT A2 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TCA9554A SCPS196D – DECEMBER 2010 – REVISED AUGUST 2015 TCA9554A Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers 1 Features 3 Description The TCA9554A is a 16-pin device that provides 8 bits 1 • I2C to Parallel Port Expander of general purpose parallel input/output (I/O) • Open-Drain Active-Low Interrupt Output expansion for the two-line bidirectional I2C bus (or • Operating Power-Supply Voltage Range of 1.65 V SMBus) protocol. The device can operate with a to 5.5 V power supply voltage ranging from 1.65 V to 5.5 V. The device supports both 100-kHz (Standard-mode) • 5-V Tolerant I/O Ports and 400-kHz (Fast-mode) clock frequencies. I/O • 400-kHz Fast I2C Bus expanders such as the TCA9554A provide a simple • Three Hardware Address Pins Allow up to Eight solution when additional I/Os are needed for Devices on the I2C/SMBus switches, sensors, push-buttons, LEDs, fans, and other similar devices. • Input/Output Configuration Register • Polarity Inversion Register The features of the TCA9554A include an interrupt that is generated on the INT pin whenever an input • Internal Power-On Reset port changes state. The A0, A1, and A2 hardware • Low Standby Current Consumption selectable address pins allow up to eight TCA9554A • Power-Up With All Channels Configured as Inputs devices on the same I2C bus. The device can also be reset to its default sate by cycling the power supply • No Glitch on Power Up and causing a power-on reset. • Noise Filter on SCL/SDA Inputs • Latched Outputs With High-Current Drive Device Information(1) Maximum Capability for Directly Driving LEDs PART NUMBER PACKAGE BODY SIZE (NOM) • Latch-Up Performance Exceeds 100 mA Per TSSOP (16) 5.00 mm × 4.40 mm JESD 78, Class II TCA9554A SSOP (16) 4.90 mm × 3.90 mm • ESD Protection Exceeds JESD 22 SSOP (16) 6.20 mm × 5.30 mm – 2000-V Human-Body Model (A114-A) (1) For all available packages, see the orderable addendum at the end of the datasheet. – 1000-V Charged-Device Model (C101) 2 Applications • Servers • Routers (Telecom Switching Equipment) • Personal Computers • Personal Electronics (e.g. Gaming Consoles) • Industrial Automation • Products With GPIO-Limited Processors 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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