SN74CBT3345DBR

Overview

The SN74CBT3345DBR is an octal bus transceiver manufactured by Texas Instruments, designed for high-speed digital signal routing. It features a single 8-bit configuration with independent direction control and active pull-up resistors on all ports. The device operates within a supply voltage range of 2.3V to 3.6V and supports bidirectional data transfer. Key electrical specifications include a maximum propagation delay of 150 ps and a maximum on-resistance of 12 ohms. It functions reliably across an extended temperature range from -40°C to +85°C.

Feature Summary

• Provides bidirectional data transmission through eight independent channels with configurable direction control.
• Integrates active pull-up resistors on all ports to maintain defined logic states during high-impedance conditions.
• Ensures minimal signal distortion with ultra-low propagation delay characteristics suitable for high-speed interfaces.

Applications

• High-speed data routing in portable consumer electronics
• Memory bus expansion and bridging in computing systems
• Signal isolation between different voltage domains

Procurement Notes

Verify the specific package variant, as the DBR suffix denotes SSOP-20 packaging. Confirm that the operating environment remains within the specified 2.3V to 3.6V supply range. Ensure thermal management aligns with the -40°C to +85°C industrial temperature rating. Cross-reference the datasheet for accurate pinout configurations relative to the target PCB layout.

Selection Notes

Select this component when low power consumption and high switching speed are critical requirements. The integrated active pull-ups simplify circuit design by eliminating external resistor networks. Verify compatibility with the system's logic voltage levels before integration. Consider the SSOP-20 footprint constraints during mechanical design phases.

Part Context

This part belongs to the SN74CBT3345C series of octal bus switches. It serves as a high-performance alternative to standard logic buffers, offering superior switching speeds and lower power dissipation. The device is engineered for applications requiring efficient data flow management between microprocessors and peripheral devices.

Replacement Considerations

SN74CBT3245DBR