PCA9518PW

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PCA9518PW

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IC INTERFACE SPECIALIZED 20TSSOP

365 Дни гарантии качества

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Спецификации

Атрибут Ценность
Supplier Texas Instruments
Package Tube
ProductStatus Active
Applications Buffer
Interface I²C
Voltage-Supply 3V ~ 3.6V
Package/Case 20-TSSOP (0.173, 4.40mm Width)
SupplierDevicePackage 20-TSSOP

Обзор

Description

PCA9518PW is an I2C-bus buffer/repeater from NXP. It sits between two I2C segments (master side and remote side) and provides bidirectional buffering and level shifting, allowing different supply rails on each side, higher bus capacitance, and longer interconnects without violating I2C timing or reliability.
Key points:
- Buffers two I2C segments to extend distance and reduce loading/noise.
- Enables level shifting between different Vcc rails on each side.
- Supports standard/fast I2C modes and preserves bus arbitration.
- Often used to isolate noisy devices or separate subsystems in multi-board or automotive/industrial apps.
- Packaged in a PW variant (plastic package); check the datasheet for exact pinout, channel count, and electrical specs.
For precise capabilities (channels, voltage ranges, speed, protections), consult the PCA9518PW datasheet.

Equivalent

PCA9518PW is NXP’s 8‑bit I2C-bus buffer/repeater. Direct cross‑references are limited, but:
- NXP PCA9518 (same device, different package) — direct alternative.
- TI TCA9517A / TCA9518A — similar I2C bus repeater/buffers (not always 1:1 pin compatible).
For exact pinout/voltage compatibility, check distributor cross-reference databases.

Features

PCA9518PW is an I2C-bus buffer/repeater with level shifting. Key features:
- Bidirectional buffering between two I2C buses, enabling longer cables and higher load without degrading signals.
- Level translation between two supply domains, allowing interfacing devices at different voltages (e.g., 3.3V and 5V).
- I2C/SMBus compatible, supports standard-mode and fast-mode (FM) I2C operation (and related SMBus features).
- Enable input to isolate the two buses when needed (power/save/diagnostics).
- Low power consumption in both active and idle states.
- Protection features on SDA/SCL lines (ESD/over-voltage protection typical for I2C interfaces).
- Operating temperature range suitable for general and industrial environments.
- Available in PW package (plastic package) for convenient PCB mounting.

Pinout

- Pin count: 18 pins (PCA9518PW in an 18‑lead package).
- Function: An 8‑channel I2C bus buffer/repeater. It provides eight bidirectional SDA/SCL buffers to couple and isolate multiple I2C bus segments (useful for extending range, noise isolation, or level shifting between buses).

Manufacturer

- Manufacturer: NXP Semiconductors.
- Company type: A Dutch multinational semiconductor company (originating from Philips Semiconductors) that designs and manufactures silicon for automotive, industrial, consumer electronics, and security applications.

Application

PCA9518PW is an I2C/SMBus bus buffer/repeater with level shifting. Common applications include:
- Level shifting between voltage domains (e.g., 3.3V and 5V I2C).
- Extending and fanning out I2C buses with buffering to reduce loading.
- Isolating noisy devices or sections to improve EMI/noise immunity.
- Segmenting buses for long-distance or multi-subsystem automotive/industrial applications.
- SMBus-compatible systems requiring translation or isolation (MCUs, sensors, EEPROMs, memories, DAC/ADC).

Package

PCA9518PW is in an 8-pin plastic small-outline package (SO-8), i.e., the Plastic Wide SOIC (PW) package.

Продукты, связанные с PCA9518PW

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