Texas Instruments PCA9543APWR

PCA9543APWR variants from Texas Instruments

PCA9543APWR Datasheet

Variants

Mfr

Texas Instruments

Lifecycle

Active

PCA9543APWR Overview

What changes between part numbers, and what to check before you lock the BOM — Connectors.

Key Features

Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.

Target Applications

Connectors — design-in and field replacement
BOM scrub where only the base prefix is known but suffix is TBD
Second-source checks when the original MPN is constrained

Ordering Variants

Compare 2 PCA9543APWR part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.

Part Number	Description	Manufacturer	Lifecycle	RoHS	Availability	Action
PCA9543APWR	2-channel 2.3- to 5.5-V I2C/SMBus switch with interrupt, reset & voltage translation 14-TSSOP -40 to 85	Texas Instruments	Active	Compliant	In Stock	RFQ
PCA9543APWRG4	Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-TSSOP -40 to 85	Texas Instruments	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on PCA9543APWR map to package, grade, and reel options.

How to Choose the Right PCA9543APWR Connectors

📦

Match the footprint first

Pull the exact package drawing for your MPN — base-number swaps fail most often at the footprint, not the schematic.

⚡

Electrical headroom

Compare voltage and current columns in the variant table. For PCA9543APWR, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.

🌡️

Temp grade letter matters

Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.

🔢

Copy the full MPN

Do not BOM only "PCA9543APWR" — include the full suffix (e.g. G4). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for PCA9543APWR product family

Identity

Base Model

PCA9543APWR

Manufacturer

Texas Instruments

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source PCA9543APWR with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 2 ordering variants from Texas Instruments. Our team supports active, EOL, and hard-to-find component sourcing.

Original manufacturer parts with traceability options
BOM upload and multi-line RFQ support
Package, grade, and compliance verification

Request Quote View Texas Instruments Browse all base models →

Frequently Asked Questions

Common technical questions about the PCA9543APWR product family.

Is PCA9543APWR a single part I can order, or a family prefix?

PCA9543APWR is a base / family code from Texas Instruments. You order a full MPN such as PCA9543APWR, PCA9543APWRG4. The variant table lists 2 orderable lines with different suffixes.

What do the suffix letters on PCA9543APWR part numbers mean?

Listed suffix fragments include: G4. Typically they encode package (see Package column), temperature grade, and tape/reel option. Always decode on the Texas Instruments datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of PCA9543APWR variants?

Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.

What should I send for an RFQ on PCA9543APWR?

Full manufacturer MPN (not just PCA9543APWR), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.

Where is the PCA9543APWR datasheet?

Use the datasheet link in the page header. Cross-check electrical curves (SOA, saturation voltage, etc.) against your operating point — the table summarizes order codes, not every graph in the PDF.