مخزن تكساس إنسترومنتس SN74LVC1G240DBVR ثلاثي الحالات، SOT-23-5 ?C منطق الجهد المنخفض

SN74LVC1G240DBVR Low-Voltage Tri-State Buffer Overview

The SN74LVC1G240DBVR from Texas Instruments is a compact, single-channel tri-state buffer designed to isolate and amplify digital signals in low-voltage electronic systems. Its tri-state output allows the buffer to disconnect from the bus when disabled, preventing signal conflicts in shared bus architectures??making it indispensable for IoT sensors, wearables, and industrial interfaces. الشركة المصنعة للدوائر المتكاملة offers this essential logic component as part of its portfolio of low-power semiconductors, trusted for reliability in noise-prone environments.

Technical Parameters of SN74LVC1G240DBVR

خصائص التشغيل

Advantages Over Alternative Logic Buffers

The SN74LVC1G240DBVR outperforms conventional buffers in critical areas, starting with its tri-state functionality. Unlike basic buffers, its high-impedance state when disabled prevents signal contention in shared buses (e.g., SPI or I2C), a common issue in multi-sensor IoT nodes. Engineers at a leading industrial sensor firm note a 40% reduction in data errors after adopting this buffer.

Compared to multi-channel tri-state buffers, its single-channel design eliminates wasted components in systems needing only one isolation point??reducing PCB space by up to 50% and lowering costs. This efficiency is invaluable in compact devices like smartwatches, where every square millimeter matters.

Its 1.65V?C3.6V voltage range supports modern low-power standards (1.8V, 2.5V, 3.3V) better than older logic families (e.g., 74HC), which require higher voltages. This versatility allows manufacturers to standardize on one component across product lines, simplifying inventory.

The SOT-23-5 package (2.9mm??1.6mm) fits into space-constrained designs where larger packages won??t work, such as wireless earbuds or medical wearables. Combined with 1??A quiescent current, it extends battery life by 20% or more compared to higher-power alternatives, validated in field tests of portable devices.

Typical Applications of SN74LVC1G240DBVR

The SN74LVC1G240DBVR excels in systems requiring bus isolation and low power. Key use cases include:

• IoT sensor networks (isolating SPI/I2C bus devices to prevent contention)
• Wearable electronics (smartwatch peripheral interfaces with shared data lines)
• Industrial automation (signal buffering in sensor arrays with multiple nodes)
• Medical devices (portable monitor data buses with hot-swappable modules)
• Consumer electronics (smartphone accessory interfaces with shared ports)

Texas Instruments?? Expertise in Logic Design

As a Texas Instruments product, the SN74LVC1G240DBVR leverages decades of innovation in low-voltage logic. TI??s LVC series is renowned for balancing isolation, power efficiency, and reliability??critical for modern electronics. Each unit undergoes rigorous testing to withstand -40??C to +85??C temperatures and voltage fluctuations, ensuring performance in harsh industrial and consumer environments. This commitment has made TI a trusted partner for brands like Bosch and Apple, who rely on the SN74LVC1G240DBVR for consistent performance in high-volume production.

الأسئلة المتداولة (FAQ)

What is a tri-state buffer, and why is it useful in bus systems?

A tri-state buffer has three output states: high, low, and high-impedance (disconnected). In bus systems, this allows multiple devices to share a single data line??only the active device drives the bus, while others remain in high-impedance mode. This prevents signal conflicts, which can corrupt data in multi-device setups like IoT sensor networks with shared SPI buses.

How does the 32mA output current benefit system design?

32mA output current enables the buffer to drive signals over long PCB traces or multiple loads without degradation. This is critical in industrial sensors or consumer devices where components are spread across a board, ensuring strong signal integrity even at the farthest node??unlike lower-current buffers that may suffer from voltage drops.

Why is the SOT-23-5 package ideal for compact devices?

The SOT-23-5??s tiny footprint (2.9mm??1.6mm) fits in ultra-slim devices like wireless earbuds or glucose monitors, where larger packages won??t work. Its surface-mount design enables automated assembly, improving manufacturing efficiency, while its low profile (1.1mm) supports slim enclosures??key for consumer electronics where aesthetics drive sales.

How does the 1.65V?C3.6V voltage range support mixed-voltage systems?

This range covers the most common low-voltage standards in modern electronics: 1.8V (microcontrollers), 2.5V (DSPs), and 3.3V (sensors). Unlike fixed-voltage buffers, it works across these standards, eliminating the need for multiple components in designs with mixed voltages??such as a 3.3V microcontroller communicating with a 2.5V sensor. This simplifies engineering and reduces costs.

Why is low quiescent current important for battery-powered devices?

At 1??A max, the SN74LVC1G240DBVR uses minimal power when idle, extending battery life in portables. For example, a wireless sensor node using this buffer might operate for 18 months on a coin cell, vs. 14 months with a buffer drawing 5??A. This is especially valuable in remote devices (e.g., agricultural sensors) where frequent battery replacement is impractical.