
16-bit I2C-bus I/O expander in 24-TSSOP, listed by NXP for 2026 last-time buy.
PCAL6408AEX1Z is a Interface - I/O Expanders from NXP Semiconductors in 16-X2QFN packaging. It is commonly reviewed for Active low-voltage translating 8-bit I2C/SMBus GPIO expander used as NXP functional replacement. This page lists current TrustCompo stock, tier pricing, package data, datasheet access, compliance attributes, Hong Kong warehouse shipping options, payment confirmation, and RFQ options for buyers verifying this exact ordering code.

PCAL6408AEX1Z
TCE000097716
16-X2QFN
PCAL6408A
1
Active low-voltage translating 8-bit I2C/SMBus GPIO expander used as NXP functional replacement.
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RFQ checklist
Confirm the core buying details for PCAL6408AEX1Z before RFQ, PO release, and shipment planning.
Use the exact part number, manufacturer, package, and approval constraints in the RFQ.
Verify live availability, MOQ, lead time, final unit price, and tax terms before PO release.
Confirm datasheet, CoC, traceability, lifecycle notes, and inspection scope when required.
Release the PO and align DHL, FedEx, UPS, or buyer forwarder shipment from Hong Kong.
Before PO release
Product overview
Review the sourcing context for PCAL6408AEX1Z from NXP Semiconductors, including product identity, application fit, package notes, and purchasing considerations.
PCAL6408AEX1Z is an active NXP low-voltage translating 8-bit I2C and SMBus GPIO expander in 16-X2QFN. NXP names it as the recommended replacement for multiple 2026 EOL PCA8574, PCA9554, PCA9557, PCA9574, and PCA9674 package variants. It should be treated as a functional migration target because package, reset behavior, voltage domains, and register details may differ from legacy boards.
Technical parameters
Compare grouped PCAL6408AEX1Z parameters from NXP Semiconductors, including package, series, key attributes, and technical values used for engineering and sourcing review.
Product Parameter
Function
8-bit low-voltage translating GPIO expander
Product Attribute
Number Of I/O
8
Product Attribute
Lifecycle Status
Active
Product Attribute
Clock Frequency
400 kHz
Product Attribute
Manufacturer
NXP USA Inc.
Product Attribute
Interface
I2C / SMBus
| Parameter | Value |
|---|---|
Function Specifies the logical or operational function of the component, such as switching, amplification, or regulation. This attribute helps identify the device's role in a circuit. Verify the function against the datasheet to ensure it matches your application requirements. | 8-bit low-voltage translating GPIO expander |
| Parameter | Value |
|---|---|
Number Of I/O Total number of input/output pins or channels available on the device. Determines connectivity and interface capability. Verify against your system requirements and datasheet to ensure sufficient I/O for your application. | 8 |
Lifecycle Status Current stage in the product's lifecycle, such as Active, Obsolete, or End of Life. This indicates availability and long-term supply risk. Check this before designing in a part to ensure it will be available for your product's production lifetime. | Active |
Clock Frequency Operating frequency of the clock signal that drives the device. Determines processing speed and timing accuracy. Compare with your system's required clock rate and check the datasheet for maximum and typical values. | 400 kHz |
Manufacturer Identifies the company that designed and produced the component. Buyers often filter by manufacturer to ensure brand reliability, quality standards, and supply chain consistency. Verify the manufacturer against the datasheet and official packaging to avoid counterfeit parts. | NXP USA Inc. |
Interface Specifies the communication protocol or interface type used by the component, such as I2C, SPI, UART, or USB. This determines how the device connects to a microcontroller or system. Verify compatibility with your host controller and bus voltage levels before design-in. | I2C / SMBus |
Supply Voltage Specifies the nominal operating voltage that must be applied to the component for proper function. Verify this value against your system's power rail and the datasheet's absolute maximum ratings to ensure reliable operation and avoid damage. | 1.65 V to 5.5 V |
Package / Case Physical package or case type of the component, defining its dimensions, mounting style, and thermal characteristics. Common types include SMD, through-hole, BGA, and QFN. Choose the package that fits your PCB layout and assembly process. Verify the exact package code in the datasheet for footprint compatibility. | 16-X2QFN |
Datasheet preview
Preview the PCAL6408AEX1Z datasheet from NXP Semiconductors to check package, electrical characteristics, application notes, and document evidence before RFQ.
Notice documents
No public product notice document is currently displayed for PCAL6408AEX1Z. Confirm PCN, PDN, EOL, date code, and lifecycle status during RFQ before production purchase.
Cross-reference and alternatives
Review mapped alternatives for PCAL6408AEX1Z from NXP Semiconductors. Compare replacement type, package, lifecycle status, stock, datasheet availability, and sourcing context before RFQ or engineering approval.
Related sourcing options
Explore related Interface - I/O Expanders products to compare fit, stock status, datasheets, and sourcing options.

16-bit I2C-bus I/O expander in 24-TSSOP, listed by NXP for 2026 last-time buy.

8-bit I2C-bus I/O expander in 16-SOIC, listed by NXP for 2026 last-time buy.

16-bit I2C-bus I/O expander in 24-SSOP, listed by NXP for 2026 last-time buy.

8-bit I2C-bus I/O expander in 16-TSSOP, listed by NXP for 2026 last-time buy.

8-bit I2C/SMBus I/O expander in 16-SSOP, listed by NXP for 2026 last-time buy.

16-bit low-voltage translating I2C/SMBus GPIO expander used as NXP functional replacement.
Common questions
Targeted answers for buyers verifying the exact PCAL6408AEX1Z ordering code, packaging, stock, datasheet, and replacement path.
PCAL6408AEX1Z is the exact ordering code listed for a Interface - I/O Expanders component from NXP Semiconductors. The current package reference is 16-X2QFN, with listed context including Active low-voltage translating 8-bit I2C/SMBus GPIO expander used as NXP functional replacement.. Buyers should use the full code when requesting stock, price, datasheet, or compliance confirmation.
Treat PCAL6408AEX1Z as the full ordering code during RFQ and engineering review. Confirm the listed 16-X2QFN package, manufacturer documentation from NXP Semiconductors, datasheet ordering table, reel or packing details, and any customer approval constraints before substitution or PO release.
PCAL6408AEX1Z is currently listed with package reference 16-X2QFN from NXP Semiconductors. Buyers should confirm the manufacturer package drawing, footprint, pinout, tape-and-reel details, and receiving requirements before approval.
PCAL6408AEX1Z is currently marked with stock availability on this page. Before ordering, confirm the package (16-X2QFN), listed stock (30000), available quantity (20000), required quantity, lead time, final price, compliance needs, and exact ordering code match through RFQ.
Use the PCAL6408AEX1Z cross-reference page to compare mapped alternatives, replacement type, package, lifecycle, stock, and pin-to-pin replacement notes before RFQ or engineering approval.