SN74CBT3345DBLE

Overview

The SN74CBT3345DBLE is an octal bus switch IC from Texas Instruments, organized as one 8-bit switch bank with dual output-enable inputs. It provides high-speed TTL-compatible bus switching in a standard '245 device pinout using a 20-pin SSOP (QSOP) package. The low on-state resistance allows connections with minimal propagation delay. Recommended operating conditions specify a supply voltage range of 4.5 V to 5.5 V and an operating temperature range of -40°C to 85°C.

Feature Summary

• Provides eight bits of high-speed TTL-compatible bus switching
• Features low on-state resistance for minimal propagation delay
• Organized as one 8-bit switch bank with dual output-enable inputs

Applications

• High-speed data bus routing
• Signal path translation between ports
• System board interconnects requiring bidirectional data transfer

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the exact package type and reel specifications. Confirm that the component status aligns with current production requirements, as availability may vary by region or manufacturing lot. Ensure all unused control inputs are properly terminated during implementation.

Selection Notes

Select this component when an octal bidirectional bus switch with TTL-compatible input levels is required. The device supports a 5-V supply environment and offers a standard '245 pinout for easy integration into existing designs. Consider the thermal impedance and package constraints when designing the PCB layout.

Part Context

This part belongs to the SN74CBT3345 family of digital bus switches manufactured by Texas Instruments. The family includes various package options such as SOIC, TSSOP, and TVSOP. The DBLE designation specifically indicates the SSOP (QSOP) package variant designed for surface-mount applications within the industrial temperature range.

Replacement Considerations

SN74CBT3345DBQR