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TCAL9538RSVR

The Texas Instruments TCAL9538RSVR is an 8-bit I2C-bus/SMBus I/O expander. It features interrupt and reset capabilities, supporting a wide operating voltage range.

✓ Total Stock: 166 pcs

$ Price Range: $0.68

TCAL9538RSVR Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
MW.FEP S.p.A. ✓ Non-Authorised Inventory information	166 pcs On Request	166 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

TCAL9538RSVR Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments

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TCAL9538RSVR Description

Short technical summary and product information.

The TCAL9538RSVR from Texas Instruments is a low-voltage, 8-bit I2C-bus and SMBus compatible I/O expander. It is designed to provide flexible I/O expansion for various applications.

Key electrical specifications include an operating power-supply voltage range of 1.08V to 3.6V and a maximum I2C bus frequency of 1 MHz (Fast Mode Plus). The device offers a low standby current consumption of typically 1 µA at 1.8V. It includes features such as an active-low reset input and an open-drain active-low interrupt output.

The TCAL9538RSVR supports agile I/O configuration, allowing input or output configuration, polarity inversion, and configurable I/O drive strength. It also features pull-up and pull-down resistor configuration registers and an internal power-on reset. The outputs are latched with high-current drive capability, suitable for directly driving LEDs.

Available in UQFN, TSSOP, and X2QFN packages, this I/O expander is designed for surface mount applications. It offers robust ESD protection, exceeding 4000V for the Human Body Model and 1000V for the Charged Device Model, and latch-up performance exceeding 100mA.

TCAL9538RSVR Quick Information

Product Type: IO Expander

Series: I2C & SPI general-purpose I/Os (GPIOs)

Canonical Name: TCAL9538RSVR 8-Bit I2C-bus/SMBus I/O Expander

Subcategory: I2C, SMBus

TCAL9538RSVR Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

TCAL9538RSVR Estimated Pricing

Qty	Low	High
1+	$0.68	$0.68

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

TCAL9538RSVR Features

8-bit I2C-bus/SMBus I/O expander.
Operating voltage from 1.08V to 3.6V.
1MHz maximum I2C bus frequency.
Active-low interrupt and reset pins.
High-current drive capability for LEDs.

TCAL9538RSVR Applications

Provides additional digital I/O pins.
Suitable for low-voltage applications.
Interface expansion for microcontrollers.
LED driving and control.

TCAL9538RSVR FAQs

7 frequently asked questions generated from this part’s specifications.

What is the operating voltage range of the TCAL9538RSVR?

The operating power-supply voltage range is 1.08V to 3.6V.

How many I/O pins does the TCAL9538RSVR provide?

It provides 8 I/O pins.

What is the maximum I2C bus speed supported?

1 MHz Fast Mode Plus.

What is the operating temperature range?

-40°C to 125°C.

What packages are available for the TCAL9538RSVR?

It is available in UQFN (RSV), TSSOP (PW), and X2QFN (DTU) packages.

Does the TCAL9538RSVR have ESD protection?

Yes, it has 4000V Human Body Model and 1000V Charged Device Model ESD protection.

What is the standby current consumption?

1 µA typical at 1.8V.