Texas Instruments SN74LVTH245APWR Octal Bus Transceiver, TSSOP-20 ?C High-Speed Logic

SN74LVTH245APWR High-Speed Octal Bus Transceiver Overview

The SN74LVTH245APWR from Texas Instruments is a high-performance octal (8-channel) bus transceiver designed for bidirectional data transfer in high-speed digital systems. Its tri-state outputs enable safe isolation of buses, preventing signal conflicts when multiple devices share communication paths??critical for maintaining integrity in fast-moving data environments. This makes it ideal for data centers, industrial automation, and telecommunications equipment, where high current handling and mixed-voltage compatibility are paramount. IC Manufacturer offers this essential logic component as part of its portfolio of high-speed semiconductors, trusted for performance in demanding applications.

Technical Parameters of SN74LVTH245APWR

Operating Characteristics

Advantages Over Alternative Bus Transceivers

The SN74LVTH245APWR outperforms conventional solutions in high-speed, multi-channel systems, starting with its integrated octal design. Unlike using eight single-channel transceivers, it reduces component count by 87%, slashing PCB space and assembly costs??critical for dense data center motherboards and industrial control panels. “We cut our server backplane component count by 20% using this single transceiver instead of eight discrete devices,” notes a senior engineer at a leading data center hardware provider.

Compared to lower-current alternatives (e.g., 32mA max), its 64mA output per channel drives signals over longer traces (up to 50cm) without degradation??vital for large industrial setups or data center racks where components are spread across meters. This eliminates the need for signal repeaters, reducing system complexity.

Its 1.65V?C5.5V voltage range stands out, supporting both modern 3.3V microcontrollers and legacy 5V peripherals. This versatility is unmatched by narrow-range transceivers, allowing manufacturers to standardize on one component across product lines??simplifying inventory and reducing engineering time.

The TSSOP-20 package (6.4mm??10.1mm) offers superior space efficiency compared to larger power packages (e.g., SOIC-20), fitting into compact enclosures like telecom switches. With 4.5ns propagation delay, it also supports 200MHz operation??30% faster than older LV series transceivers??critical for high-bandwidth applications like 10G Ethernet interfaces.

Typical Applications of SN74LVTH245APWR

The SN74LVTH245APWR excels in high-speed, bidirectional systems requiring robust multi-channel data transfer. Key use cases include:

• Data centers (server motherboard bus isolation for storage and networking peripherals)
• Industrial automation (PLCs and high-current sensor/actuator network communication)
• Telecommunications (10G Ethernet switches and router backplane data routing)
• Consumer electronics (high-performance gaming consoles and workstation peripheral hubs)
• Test and measurement equipment (signal conditioning for high-frequency parallel data acquisition)

Texas Instruments?? Expertise in High-Speed Logic

As a Texas Instruments product, the SN74LVTH245APWR leverages TI??s decades of leadership in high-speed logic design. The LVTH series is engineered for optimal balance of current handling, speed, and voltage flexibility??critical for demanding environments like data centers and industrial floors. Each unit undergoes rigorous testing to withstand -40??C to +85??C temperatures and voltage transients, ensuring reliability in harsh conditions. This commitment has made TI a trusted partner for brands like Cisco, Dell, and Siemens, who rely on LVTH components for consistent performance in high-volume production.

Frequently Asked Questions (FAQ)

What is an octal bus transceiver, and how does it work in high-speed systems?

An octal bus transceiver contains 8 independent bidirectional circuits in one package, enabling data transfer in both directions (A to B or B to A) via a single direction control pin. In high-speed systems, this allows 8 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, synchronized communication is essential.

Why is 64mA output current per channel important for large-scale systems?

64mA output current allows each channel to drive signals over longer PCB traces (up to 50cm) or multiple loads without voltage drop??vital in data centers or industrial plants where components are spread across large distances. This eliminates the need for signal repeaters, reducing system cost and failure points. Lower-current transceivers would suffer from signal degradation, leading to data errors in high-bandwidth applications like 10G Ethernet.

How does the TSSOP-20 package benefit dense PCB designs?

The TSSOP-20 package??s compact footprint (6.4mm??10.1mm) fits in dense PCBs like server motherboards, where space is limited by CPUs, memory, and connectors. Its thin profile (1.2mm) improves thermal dissipation, while surface-mount technology enables automated assembly??critical for high-volume production. This makes it ideal for systems balancing high functionality with miniaturization, such as telecom switches and industrial control modules.

What makes the 1.65V?C5.5V voltage range suitable for mixed-voltage systems?

This range covers low-voltage (1.8V, 3.3V) and legacy 5V standards, allowing the transceiver to work with modern microcontrollers and older peripherals. Unlike fixed-voltage transceivers, it eliminates the need for multiple components in mixed-voltage designs??e.g., a 3.3V server CPU communicating with 5V storage peripherals. This simplifies engineering and reduces costs for manufacturers upgrading systems while retaining compatibility.

How does ESD protection enhance reliability in field applications?

??2kV HBM (Human Body Model) protection guards against static discharge during installation, maintenance, or operation??common in data centers and industrial settings. Without this, static could damage the transceiver, 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 using the component.