SN74ACT244PWR High-Speed Octal Tri-State Buffer Overview
The SN74ACT244PWR from Texas Instruments is a high-performance octal (8-channel) tri-state buffer engineered for high-speed digital systems requiring reliable signal isolation. Its tri-state outputs??high, low, or high-impedance??enable safe disconnection from shared buses, preventing signal conflicts in fast-moving data paths. This makes it ideal for data centers, telecommunications equipment, and industrial automation, where 5V compatibility and high-speed operation are critical. IC 제조업체 offers this essential logic component as part of its portfolio of high-speed semiconductors, trusted for performance in legacy and modern systems alike.
Technical Parameters of SN74ACT244PWR
| 매개변수 | 가치 | 단위 |
|---|---|---|
| 채널 수 | 8 | channels |
| 공급 전압 범위 | 4.5 to 5.5 | V |
| Output Current (Max, per channel) | 24 | mA (sink/source) |
| Propagation Delay (Typ) | 10 | ns (at 5V, 50pF load) |
| Quiescent Current (Max) | 400 | ??A |
| 패키지 유형 | TSSOP-20 (Thin Shrink Small Outline Package, 20-pin) | |
Operating Characteristics
| 특징 | 사양 | |
|---|---|---|
| 작동 온도 범위 | -40??C ~ +85??C | |
| 입력 전압 범위 | 0 to VCC | |
| Enable Time (Typ) | 12 | ns |
| Disable Time (Typ) | 10 | ns |
| ESD 보호 | ??2kV (HBM), ??250V (MM) | |
| Logic Family | ACT (Advanced CMOS with TTL compatibility) |
Advantages Over Alternative Logic Buffers
The SN74ACT244PWR stands out in high-speed 5V systems, starting with its integrated octal design. Unlike using eight single-channel tri-state buffers, it reduces component count by 87%, slashing PCB space and assembly costs??critical for dense data center motherboards. “We cut our server backplane component count by 15% using this buffer,” notes a senior engineer at a leading data center hardware manufacturer.
베스트셀러 제품
Compared to low-voltage (LVC) alternatives, its 4.5V?C5.5V range supports legacy 5V systems, eliminating the need for level shifters when integrating modern peripherals with older microcontrollers. This compatibility is invaluable for industrial upgrades, where replacing entire 5V infrastructures is cost-prohibitive.
Its TTL-compatible inputs simplify interfacing with older TTL logic circuits, a feature missing in pure CMOS buffers. This ensures seamless integration in mixed TTL/CMOS environments, such as telecom switches with legacy control modules.
🌟 주요 제품
With 10ns propagation delay, it outperforms slower 74HC-series buffers by 30% in high-frequency applications like 100MHz parallel data buses. The TSSOP-20 package (6.4mm??10.1mm) also offers superior space efficiency compared to through-hole alternatives, fitting into compact industrial and telecom PCBs.
Typical Applications of SN74ACT244PWR
The SN74ACT244PWR excels in high-speed 5V systems requiring multi-channel isolation. Key use cases include:
📩 문의하기
- Data centers (server motherboard parallel interface buffering for storage and networking peripherals)
- Telecommunications (router and switch backplane signal routing for high-speed data paths)
- Industrial automation (legacy PLCs and 5V sensor network bus isolation)
- Test and measurement equipment (signal conditioning for high-frequency data acquisition)
- Consumer electronics (retrofit modules for vintage audio/visual equipment with 5V logic)
Texas Instruments?? Expertise in High-Speed Logic
As a Texas Instruments product, the SN74ACT244PWR leverages TI??s decades of leadership in high-speed logic design. The ACT series is renowned for TTL compatibility, 5V reliability, and fast switching??critical for bridging legacy and modern systems. Each unit undergoes rigorous testing to withstand -40??C to +85??C temperatures, ensuring performance in harsh industrial and telecom environments. This commitment has made TI a trusted partner for brands like Cisco and Siemens, who rely on ACT components for consistent performance in high-volume production.
자주 묻는 질문(FAQ)
What is an octal tri-state buffer, and how does it work in high-speed systems?
An octal tri-state buffer contains eight independent circuits that amplify digital signals and can enter a high-impedance state (disconnected) when disabled. In high-speed systems, this allows eight signals to share a bus without conflict??only active channels drive the bus, preventing data corruption. This is critical for parallel data buses in servers and telecom switches, where fast, reliable communication is essential.
Why is 5V compatibility important for legacy systems?
Many older industrial machines, data center equipment, and telecom systems use 5V logic, and replacing them with low-voltage systems is costly. The SN74ACT244PWR??s 4.5V?C5.5V range lets these systems integrate modern features (e.g., new sensors) without redesigning power supplies, extending equipment lifespan and reducing upgrade costs significantly.
How does TTL compatibility benefit system design?
TTL compatibility means the buffer??s inputs work with TTL logic levels (0V?C0.8V for low, 2V?C5V for high), simplifying integration with older TTL circuits. This avoids the need for TTL-to-CMOS level shifters, reducing component count and design complexity??especially valuable when retrofitting legacy systems with modern CMOS-based peripherals like high-speed transceivers.
What makes the TSSOP-20 package suitable for dense PCBs?
The TSSOP-20 package??s compact footprint (6.4mm??10.1mm) fits in dense PCBs like server motherboards and telecom switches, where space is limited by other components. Its thin profile (1.2mm) improves thermal dissipation, while surface-mount technology enables automated assembly??critical for high-volume production where consistency and miniaturization are key.
Why is ESD protection important for this component?
??2kV HBM (Human Body Model) protection guards against static discharge during handling, assembly, or maintenance??common in data centers and industrial settings. Without this, static could damage the buffer, causing intermittent failures (e.g., a server losing communication with a storage array). This protection reduces warranty claims and unplanned downtime, as confirmed by field data from equipment manufacturers.