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TCA7408ZSZR The Texas Instruments TCA7408ZSZR is an 8-bit I2C and SMBus I/O expander. It operates with a supply voltage range of 1.65V to 3.6V and supports clock frequencies up to 400kHz.
Mfr Part #:

TCA7408ZSZR

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TCA7408ZSZR is an 8-bit I2C and SMBus I/O expander. It operates with a supply voltage range of 1.65V to 3.6V and supports clock frequencies up to 400kHz.
✓ Total Stock: 45,258 pcs
$ Price Range: $1.15

TCA7408ZSZR Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
43,048 pcs
On Request
43048 pcs On Request 1 On Request On Request On Request On Request On Request
Braun Electronic Components ✓
Non-Authorised Inventory information
2,110 pcs
On Request
2110 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
100 pcs
On Request
100 pcs On Request 1 On Request On Request 14+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

TCA7408ZSZR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Frequency
Current
ESD Protection
Features
Interface
Interrupt Output
Lead Spacing
Mounting Type
Number of I
Operating Temperature
Output Type
Supplier Device Package
Voltage
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TCA7408ZSZR Description

Short technical summary and product information.

The Texas Instruments TCA7408ZSZR is a low-voltage, 8-bit I2C and SMBus I/O expander designed for general-purpose remote I/O expansion. It features a wide operating power-supply voltage range of 1.65V to 3.6V, allowing bidirectional voltage-level translation between different GPIO ports. This device supports fast mode communication up to 400kHz.

 

Key electrical characteristics include an active current consumption of less than 2 µA at 1.8V with a 100kHz clock and less than 5 µA at 1.8V with a 400kHz clock. It also offers an active-low reset input and an open-drain active-low interrupt output. The TCA7408ZSZR provides 8 I/O pins and operates with a current rating of 10mA.

 

Packaged in a compact 16-UCSP (2x2) format, this I/O expander is suitable for surface mount applications. Its features include programmable pull-up/pull-down resistors for GPIO inputs and programmable edge detection for generating interrupts. The device also includes internal power-on reset and a watchdog timer for enhanced reliability.

 

Applications for the TCA7408ZSZR include personal electronics such as smartphones and gaming consoles, as well as servers, routers, and industrial automation systems, particularly those with GPIO-limited processors.

TCA7408ZSZR Quick Information

Product Type: IO Expander
Canonical Name: 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
Subcategory: I2C/SMBus

TCA7408ZSZR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TCA7408ZSZR Estimated Pricing

Qty Low High
1+ $1.15 $1.15

Estimated market price range - modelled values for guidance only, not live distributor offers.

TCA7408ZSZR Features

  • 8-bit I2C and SMBus I/O expander.
  • Wide 1.65V to 3.6V operating voltage.
  • Supports 400kHz fast mode communication.
  • Active-low reset and interrupt outputs.
  • Compact 16-UCSP package for surface mounting.

TCA7408ZSZR Applications

  • Ideal for personal electronics.
  • Suitable for servers and routers.
  • Used in industrial automation.
  • Applications with limited GPIOs.

TCA7408ZSZR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the TCA7408ZSZR?

The operating voltage range is 1.65V to 3.6V.

What is the maximum clock frequency supported by the TCA7408ZSZR?

The TCA7408ZSZR supports a maximum clock frequency of 400 kHz.

What interface protocols does the TCA7408ZSZR support?

The TCA7408ZSZR supports I2C and SMBus protocols.

What is the package type for the TCA7408ZSZR?

The TCA7408ZSZR is available in a 16-UCSP (2x2) package.

What is the operating temperature range of the TCA7408ZSZR?

The operating temperature range is -40°C to 85°C.

Does the TCA7408ZSZR have an interrupt output?

Yes, the TCA7408ZSZR features an open-drain active-low interrupt output.

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