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IC XPNDR 400KHZ I2C 16TSSOP

9/26/2025 3:58:06 AM

Texas Instruments TCA9534PWR

Part No.:: TCA9534PWR

Manufacturer:: Texas Instruments

Category:: Posts

Datasheet:: TCA9534PWR.pdf

Description:: IC I/O EXPANDER I2C 8B 16TSSOP

Quantity:: RFQ

Payment:

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TCA9534PWR details

The TCA9534PWR is an 8-bit I²C/SMBus GPIO expander developed by Texas Instruments (TI), designed to extend the input/output capabilities of microcontrollers (MCUs) in space-constrained or resource-limited applications.

1. Core Functions & Specifications

Interface:

I²C Bus: Supports standard mode (100kHz) and fast mode (400kHz) communication, enabling bidirectional data transfer over two wires (SCL, SDA).

Addressing: Three hardware pins (A0, A1, A2) allow up to 8 devices to coexist on the same bus with unique addresses (0x20 to 0x27).

I/O Configuration:

8 Bidirectional Pins (P0-P7): Each pin can be independently configured as input or output via registers. Inputs support 5V tolerance, while outputs offer selectable push-pull or open-drain modes (with external pull-up resistors).

Polarity Inversion: A dedicated register allows inversion of input/output logic levels (e.g., convert high-to-low or low-to-high signals).

Power & Efficiency:

Wide Supply Voltage: Operates from 1.65V to 5.5V, compatible with both low-voltage (e.g., 1.8V) and standard (5V) systems.

Low Power Consumption: Quiescent current as low as 1μA (max) in standby mode, ideal for battery-powered or energy-sensitive applications.

Protection Features:

ESD Protection: Exceeds JESD 22 standards (2000V HBM, 1000V CDM) for robust handling.

Overcurrent Protection: Outputs can sink up to 25mA (sourcing) and source 10mA (sinking), suitable for driving LEDs or small relays directly.

2. Key Features

Interrupt Functionality:

INT Pin: Generates a low-active interrupt signal when any input pin's state changes, alerting the MCU without continuous polling. The interrupt remains active until the input register is read.

Debouncing: Optional software debouncing via register configuration to filter noise from mechanical switches or sensors.

Flexible Control:

Registers: Four 8-bit registers (Configuration, Input, Output, Polarity) enable granular control over I/O behavior. All registers are readable and writable via I²C.

Power-On Reset: Initializes all pins to input mode with no glitches during startup.

Thermal & Environmental:

Temperature Range: -40°C to +85°C, meeting industrial-grade requirements for harsh environments.

Package: 16-pin TSSOP (3x4.4mm) with exposed thermal pad for efficient heat dissipation.

3. Typical Applications

Industrial Control: Expanding digital I/O for PLCs, sensors, or actuators in factory automation.

Consumer Electronics: Managing LED indicators, keypad inputs, or motor controls in appliances and IoT devices.

Automotive Systems: Extending GPIO for infotainment systems, climate controls, or sensor interfaces.

Communication Devices: Adding auxiliary I/O to routers, switches, or base stations

Package/Case:
16-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT)
Series:
-
ProductStatus:
Active
NumberofI/O:
8
Interface:
I²C
InterruptOutput:
Yes
Features:
-
OutputType:
Push-Pull
Current-OutputSource/Sink:
-
ClockFrequency:
400 kHz
Voltage-Supply:
1.65V ~ 5.5V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount
Category:
Posts
Datasheet:
TCA9534PWR.pdf

1.How to find the detailed information of TCA9534PWR chips/componets? Including Microchip Technology original factory information, TCA9534PWR pictures, Posts application?

You can use the intelligent search engine of jinftry.com, or filter by Active Filters category, or find it through Microchip Technology page.

2.How does E-BEST INDUSTRIAL (HK) CO.,LTD guarantee that TCA9534PWR is the original manufacturer or agent of Microchip Technology?

We have a very professional business development department to strictly test and verify the qualifications of Microchip Technology original manufacturers and agents. All Microchip Technology suppliers must pass the qualification review before they can publish their TCA9534PWR devices; we pay more attention to the channels and quality of TCA9534PWR products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.

3.Are the TCA9534PWR price and stock displayed on the platform accurate?

The Microchip Technology's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for TCA9534PWR, it is recommended to confirm the order with E-BEST INDUSTRIAL (HK) CO.,LTD salesperson or online customer service before payment.

4.What forms of payment can I use in E-BEST INDUSTRIAL (HK) CO.,LTD?

TT Bank,Wire Transfer, Paypal, Credit Card, Western Union, and Escrow is all acceptable.

5.How is the shipping arranged and track my package?

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Once your order has been processed for shipment, our sales will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, and Registered Mail needs 25-60 days.

6. What is the process for returns or replacement of TCA9534PWR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the TCA9534PWR we delivered, we will accept the replacement or return of the TCA9534PWR only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of TCA9534PWR.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations