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PCA9515APWR

Name: PCA9515APWR
Rating: 4.7 (12 reviews)

IC REDRIVER I2C 1CH 8TSSOP

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Mfr。パート #PCA9515APWR
パッケージ 8-TSSOP (0.173, 4.40mm Width)
データシート PCA9515APWR DataSheet
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仕様

Supplier	Texas Instruments
Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Not For New Designs
Type	Buffer, ReDriver
Applications	I²C
Input	2-Wire Bus
Output	2-Wire Bus
DataRate(Max)	400kHz
NumberofChannels	1
Capacitance-Input	7 pF
Voltage-Supply	2.3V ~ 3.6V
Current-Supply	500µA
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	8-TSSOP (0.173, 4.40mm Width)

概要

Description

PCA9515APWR is NXP’s dual bidirectional I2C-bus repeater. It sits between two I2C bus segments and buffers SDA and SCL, allowing you to extend I2C distances or connect buses running at different voltages without violating I2C timing. Each side can be powered from its own supply rail (VCCA and VCCB), enabling level shifting between voltages (within the device’s supported ranges). Signals transfer in both directions, and each side typically has its own pull-ups, so the two segments stay isolated from one another while communicating.
Key points:
- Two independent I2C channels with bidirectional buffering
- Separate supplies on each side for level shifting/isolation
- Supports standard/fast-mode I2C (and SMBus timing); typical bus capacitance up to ~400 pF per side
- Pb-free / RoHS-compliant (APWR package)
Typical use cases: long I2C runs, noise isolation, interfacing a microcontroller at one voltage to sensors/peripherals at another. To use, place the device between master and slave buses, with pull-ups on both sides.

Features

PCA9515APWR features (concise):
- Two bidirectional I2C-bus repeater/buffers (two channels) with a common enable input
- Level shifting between two I2C domains (VCCA and VCCB) for mixed-voltage systems
- SMBus/I2C compatibility; supports standard (100 kHz) and fast modes (up to 400 kHz)
- Enables isolation of bus segments when EN is deasserted; reduces capacitive loading and ground/bounce issues
- Extends I2C bus length and improves noise immunity and fault containment
- Low quiescent current with protección features; ESD protection on SDA/SCL
- Small 8-pin package; RoHS-compliant; automotive/industrial variants available (APWR suffix)
- Suitable for cascaded networks and multi-board systems requiring voltage translation and buffering
Note: Check the specific APWR variant datasheet for exact voltage ranges, temperature rating, and speed support.

Package

PCA9515APWR is in an 8-pin TSSOP (plastic, RoHS-compliant) package.

Pinout

- Pin count: 16 pins (PWR package).
- Function: Dual bidirectional I2C-bus buffer/repeater with separate supply rails (SDA1/SCL1 and SDA2/SCL2; VCCA, VCCB) used to level-shift and buffer two I2C buses, enabling extension or isolation of I2C segments.

Manufacturer

Manufacturer: NXP Semiconductors (PCA9515APWR).
What kind of company: NXP is a Dutch multinational semiconductor manufacturer that designs and supplies integrated circuits and system-level solutions for automotive, industrial, IoT, mobile, and secure identification markets.

Application

PCA9515APWR is a dual bidirectional I2C buffer/level shifter. Applications: connect I2C devices across different supply voltages (3.3V↔5V) for level translation; extend and segment long or high-capacitance I2C buses; isolate subsystems and reduce noise in embedded, automotive, and industrial systems; bridge multiple boards/modules while preserving timing; SMBus-compatible I2C buffering.

Equivalent

Equivalents (functional substitutes) for PCA9515APWR include: NXP PCA9515 / PCA9515A (same family), TI TCA9517 (I2C bus repeater), NXP PCA9615 (differential I2C transceiver for long runs) and P82B96 (I2C bus extender). Always verify pinout, voltage range and timing before replacing.