会社ブログについて Supply ON Logic Product:Bus Switches,Level Translators,I/O Expanders

Supply ON Logic Product:Bus Switches,Level Translators,I/O Expanders

Shenzhen Mingjiada Electronics Co., Ltd., as a leading supplier in the electronic components sector, has specialised in distribution for many years. We are committed to ensuring genuine products, prompt delivery, technical support and comprehensive services, providing our customers with high-quality electronic components across a comprehensive range.

[Key Supply Advantages]

Genuine Product Guarantee

We collaborate directly with manufacturers’ authorised channels and maintain a stock of standard models, ensuring no refurbished or loose new items are supplied. Each batch of products is accompanied by the manufacturer’s original COC batch documentation and warranty commitment.

Extensive Stock and Ultra-Fast Dispatch

We operate dual warehouses in Shenzhen and Hong Kong, holding over 2 million SKUs and tens of millions of items in stock, covering mainstream, niche, discontinued and hard-to-find components.

Standard orders are dispatched within 24–48 hours; urgent orders are responded to within 4 hours and delivered within 1–3 days, with global delivery services available.

Highly Competitive Pricing and Controllable Costs

Bulk Purchasing + Global Channels: Price advantages based on purchase volume; global sourcing of scarce components; price stability.

Integrated Buy-Back Service: Our unique buy-back system helps clear inventory, reduce procurement costs and manage obsolete stock.

Flexible transaction methods suitable for a variety of scenarios

Small batches/samples: We support PCB-level disassembly and procurement of individual components, ideal for R&D and pilot production.

Multi-currency/cross-border: We support global settlement and logistics services.

I. Bus Switches

Product Overview

ON Semiconductor’s high-speed bus switches are passive CMOS signal path devices, essentially functioning as controllable bidirectional analogue switches. They are used for digital bus multiplexing, module power domain isolation, and time-division multiplexing of memory and peripherals. The devices feature extremely low on-resistance, with signal pass-through exhibiting virtually no propagation delay and introducing no signal distortion, making them the preferred solution for on-board signal multiplexing.

Key Technical Features

Ultra-low on-resistance (typically 4–6 Ω), with virtually no ground bounce noise in pass-through mode;

Comprehensive range of multi-channel configurations: 2-bit, 4-bit, 8-bit and 10-bit channels available, with independent enable control;

Minimal static power consumption, with standby current as low as 0.1 μA, suitable for battery-powered, low-power devices;

Ioff power-off protection circuit, supporting partial power-down modes to prevent reverse leakage current from damaging the host controller;

Built-in ESD protection, with latch performance compliant with the JESD78 industrial standard;

Compatible with TTL/CMOS signals, supporting a wide voltage range of 1.2 V to 5.5 V.

Representative Models

FST Series General-Purpose Bus Switches: FST3384 (10-bit, dual 5-channel, independently enabled);

A new-generation low-voltage bus switch, suitable for interconnecting 1.0V low-voltage MCUs.

Typical Application Scenarios

Time-division switching of motherboard peripherals, multi-path selection for memory card/display signals, sensor bus switching for humanoid robots, channel isolation for industrial data acquisition modules, and signal routing for laptop expansion interfaces.

II. Level Translator

Product Overview

With the emergence of multi-voltage-domain architectures in systems (1.0V core MCUs, 1.8V sensors, 3.3V communication chips, 5V peripherals), devices operating at different voltage levels cannot communicate directly. ON Semiconductor’s level translators are categorised into auto-sensing bidirectional types, transceiver types and I²C-specific open-drain types, enabling bidirectional conversion of logic signals between two independent power rails and resolving the challenges of cross-voltage-domain communication.

Key Technical Features

Dual independent power rail design: VCCA and VCCB are mutually independent, with a conversion range covering 0.9V to 5.5V; supports conversion between any high and low logic levels;

Automatic direction-sensing architecture: no external direction control pins required, significantly simplifying the peripheral circuitry;

Two main product lines:

Push-pull compatible: suitable for SPI, UART and high-speed parallel buses, supporting up to 400Mbps;

Open-drain dedicated type: Suitable for bidirectional buses such as I²C, SMBus and PMBus (FXMAR2104, NLSX0102);

Non-priority power-up mechanism: Power can be applied to either side in any order, preventing damage to the chip from inrush current; automatic transition to high-impedance state upon power loss on one side;

Some models integrate a 10 kΩ pull-up resistor, reducing the number of external passive components;

Automotive-grade models are AEC-Q100 certified, with a wide operating temperature range of –40°C to 125°C, designed for in-vehicle control systems.

Representative models

NLSX series general-purpose bidirectional converters: NLSX0102 (2-bit), NLSX4378A (4-bit, I²C preferred);

FXMAR Series I²C-specific level converters: FXMAR2104;

74LVX245 Series 8-bit dual-supply converter transceivers;

New additions to the Treo platform: the T30LMXT3V245 Series high-speed converters, supporting high-speed SPI transmission without clock feedback.

Typical Application Scenarios

Interconnection between the main controller and servo sensors in humanoid robots; multi-module communication in industrial PLCs; in-vehicle sensor gateways; communication between IoT modules and MCUs; camera image sensor interfaces; and cross-voltage signal conversion for LEO satellite onboard boards.

III. I/O Expanders

Product Overview

As the number of native GPIO pins on an MCU is limited, port resources are often insufficient when connecting external buttons, LEDs, relays and multiple sensors. ON Semiconductor’s I/O expanders are primarily based on the I²C serial bus, utilising only two GPIO pins (SDA/SCL) on the host controller to expand multiple general-purpose GPIO channels. They support input detection, output driving and interrupt alerts, providing a low-cost port expansion solution.

Key Technical Features

Mainstream channel specifications: 8-bit (FXL6408), 16-bit (NLA9535);

Each I/O channel can be independently configured via registers: input mode / output mode; supports pull-up/pull-down configuration;

Built-in interrupt output pins: actively notifies the MCU of peripheral status changes, eliminating the need for polling and reducing the host’s power consumption;

Optional software or hardware power-on reset (POR) to enhance system power-up stability;

Multi-address hardware selection pins allow multiple expanders to be daisy-chained on a single I²C bus, expanding I/O to dozens of channels;

Wide operating voltage range of 1.65 V to 5.5 V, with a complete range of consumer-grade, industrial-grade and automotive-grade models; some models integrate PWM dimming, suitable for LED array control.

Representative Models

FXL6408: 8-bit I²C I/O expander with low quiescent current of 1.5 μA;

NLA9535: 16-bit industrial-grade I/O expander with multi-channel addressing;

MAX7315AUE: 8-channel expander with independent PWM dimming;

LC709004A: 16-bit parallel I/O expander with synchronous serial interface.

Typical Applications

Button and indicator arrays on industrial control panels; multiple external limit switches on humanoid robots; smart home panels; ambient lighting in vehicle cockpits; and multi-channel signal acquisition for instruments and meters.