74FST3245Q

Overview

The 74FST3245Q is an octal bus switch manufactured by IDT, Integrated Device Technology Inc. It features eight independent 1:1 bidirectional bus switches implemented in high-performance, low-power CMOS technology. The device operates on a single supply voltage and is designed for applications requiring high-speed data transfer with TTL-compatible logic levels. It is housed in a 20-SSOP package with a width of 3.90mm (0.154 inches). The component supports an operating temperature range from -40°C to 85°C and complies with RoHS standards.

Feature Summary

• Octal configuration providing eight independent bidirectional bus switching channels
• High-performance low-power CMOS construction ensuring efficient operation
• TTL-compatible input and output logic levels for broad interface compatibility
• RoHS compliant manufacturing process supporting environmental regulations

Applications

• High-speed data bus isolation and routing
• Bidirectional level shifting between different logic families
• System board signal distribution networks
• Portable electronic devices requiring low power consumption

Procurement Notes

Verify the manufacturer designation as IDT or Renesas Electronics, noting that IDT has been acquired by Renesas. Confirm the specific package variant matches the 20-QSOP/20-SSOP specification. Ensure the part status is active if long-term availability is required. Cross-reference the datasheet to confirm pinout compatibility with standard 74FCT245 or 74F245 footprints if substituting into existing designs.

Selection Notes

Select this component when an octal bidirectional bus switch is required for systems utilizing TTL-compatible logic. The choice is driven by the need for low power consumption combined with high-speed performance characteristics inherent to FST technology. Consider the 20-SSOP package constraints for PCB layout. Verify that the single supply voltage requirement aligns with the system's power rails before finalizing the design integration.

Part Context

This component belongs to the 74FST series of high-speed CMOS logic devices. It serves as a functional equivalent to other octal bus transceivers like the 74FCT245 and 74F245, offering pinout compatibility while leveraging advanced FST technology for improved speed and power efficiency. The Q suffix typically denotes industrial temperature range compliance in many semiconductor naming conventions.

Replacement Considerations

Publicly confirmed substitutes include the QS3245, which offers pinout compatibility with 74FCT245, 74F245, and 74ALS/AS/LS245 devices. Designers should verify electrical parameter alignment and package dimensions before swapping components to ensure mechanical and functional compatibility within the target circuit.