SN74LVC1G125DCKR Low-Voltage Single Bus Buffer Overview
The SN74LVC1G125DCKR from Texas Instruments is a compact, low-voltage CMOS bus buffer designed to isolate and amplify digital signals in crowded electronic systems. This single-channel device features a tri-state output, enabling it to disconnect from the bus when not in use??critical for preventing signal contention in multi-master setups like sensor networks and communication interfaces. IC 製造商 offers this essential logic component as part of its portfolio of low-power semiconductors, trusted for reliability in diverse electronic designs.
Technical Parameters of SN74LVC1G125DCKR
| 參數 | 價值 | 單位 |
|---|---|---|
| 供應電壓範圍 | 1.65 至 3.6 | V |
| Output Current (Max) | 32 | mA (沉/源) |
| 傳輸延遲（典型值） | 5.5 | ns (at 3.3V, 50pF load) |
| 靜態電流（最大值） | 1 | ??A |
| 包裝類型 | SOT-23-5 (Small Outline Transistor, 5-pin) | |
操作特性
| 特性 | 規格 | |
|---|---|---|
| 操作溫度範圍 | -40°C 至 +85°C | |
| 輸入電壓範圍 | 0 至 VCC | |
| 啟用時間 (Typ) | 7 | ns |
| 停用時間 (Typ) | 6 | ns |
| ESD 保護 | 2kV (HBM)、250V (MM) |
Advantages Over Alternative Bus Buffers
The SN74LVC1G125DCKR outperforms conventional bus buffers in critical areas, particularly for compact, low-power designs. Unlike multi-channel buffers, its single-channel configuration eliminates wasted components in systems needing only one isolation point??reducing PCB space and cost by up to 40% in applications like sensor interfaces and small IoT devices.
暢銷產品
Compared to non-LVC logic families (e.g., HC/HCT), its 1.65V to 3.6V voltage range offers superior compatibility with modern 3.3V and 2.5V systems, while maintaining backward compatibility with 1.8V designs. This versatility eliminates the need for separate buffer models across product lines, simplifying inventory and design workflows.
Its tri-state output is a standout feature, allowing the buffer to disconnect from the bus when disabled??preventing signal contention in multi-master systems (e.g., I2C or SPI buses with multiple sensors). This is a critical advantage over basic buffers without isolation, which can cause data corruption when multiple devices try to drive the bus simultaneously.
精選產品
The SOT-23-5 package (2.9mm x 1.6mm) is significantly smaller than through-hole or larger surface-mount alternatives, fitting into space-constrained devices like smartwatch PCBs and wireless sensor nodes. Combined with 1??A max quiescent current, it??s ideal for battery-powered equipment where energy efficiency and size directly impact usability.
Typical Applications of SN74LVC1G125DCKR
The SN74LVC1G125DCKR excels in systems requiring signal isolation and bus protection. Key use cases include:
聯絡我們
- IoT sensor networks (isolating SPI/I2C bus devices)
- Wearable electronics (smartwatch sensor interfaces)
- Portable medical devices (patient monitor data buses)
- Automotive infotainment subsystems (low-voltage signal routing)
- Consumer electronics (smartphone peripheral interfaces)
Texas Instruments?? Expertise in Logic Components
As a Texas Instruments product, the SN74LVC1G125DCKR benefits from decades of leadership in logic IC design. TI??s 74LVC series is renowned for balancing performance and power efficiency, with rigorous testing ensuring reliability across temperature extremes and voltage variations??critical for industrial and automotive environments. This commitment has made TI a trusted supplier for electronics manufacturers, with the SN74LVC1G125DCKR earning praise for its consistency in high-volume production, as noted by engineers at leading IoT module makers.
常見問題 (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). This allows it to isolate devices on a shared bus, preventing signal conflicts when multiple devices communicate. In systems like SPI or I2C networks, this ensures only one device drives the bus at a time, eliminating data corruption.
How does the 1.65V to 3.6V voltage range benefit modern electronics?
This range supports the most common low-voltage standards in today??s devices: 1.8V (microcontrollers), 2.5V (DSPs), and 3.3V (sensors). Unlike fixed-voltage buffers, it works across these standards, reducing the need for multiple components and simplifying design in mixed-voltage systems??common in IoT and portable electronics.
What advantages does the SOT-23-5 package offer for compact designs?
The SOT-23-5??s tiny footprint (2.9mm x 1.6mm) saves critical space in miniaturized devices like fitness trackers and wireless sensors. Its surface-mount design enables automated assembly, improving manufacturing efficiency, while its low profile fits in slim enclosures where height is constrained??key for wearable technology.
Why is low quiescent current important for battery-powered devices?
At 1??A max, the SN74LVC1G125DCKR minimizes standby power draw, extending battery life in portable equipment. This is far lower than older logic families (e.g., LS) that draw 100x more current, making it ideal for applications like remote sensors or smartwatches, where long battery life is a key user requirement.
How does ESD protection enhance reliability in consumer devices?
??2kV HBM (Human Body Model) protection guards against static discharge during handling and use??common in consumer electronics. Without this, static could damage the buffer or cause intermittent failures, reducing product lifespan. This protection is particularly valuable for devices like smartphones, which are frequently touched by users.