SN74CBT3244DW

Overview

The SN74CBT3244DW is an octal FET bus switch manufactured by Texas Instruments, designed for high-speed data routing applications. It operates within a supply voltage range of 4.5 V to 5.5 V and supports bidirectional signal transmission across eight independent channels. The device features low on-resistance and low leakage current, ensuring minimal signal degradation during active states. It is housed in a 20-pin SOIC package and functions reliably within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent bidirectional bus switching channels
• Low on-resistance characteristic for efficient signal transmission with minimal loss
• Low leakage current performance to maintain signal integrity when inactive
• Compatible with standard TTL logic levels for straightforward control interface

Applications

• High-speed data routing in consumer electronics
• Signal switching in portable equipment
• Bus expansion in computing systems

Procurement Notes

Verify the specific suffix 'DW' corresponds to the 20-pin SOIC package and industrial temperature grade (-40°C to +85°C). Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Ensure the ordering part number matches the exact manufacturer designation to avoid pinout or electrical parameter mismatches.

Selection Notes

Select this component for designs requiring multiple bidirectional switches within a single package. It is suitable for 5V logic systems needing low insertion loss. Consider the SOIC-20 footprint constraints and thermal dissipation capabilities. Evaluate if the 4.5V minimum operating voltage aligns with the system power rail stability.

Part Context

This device belongs to the Texas Instruments SN74CBT series of bus switches. It serves as a digital alternative to mechanical relays, offering faster switching speeds and higher reliability. The octal architecture consolidates multiple switching functions, reducing board space compared to using individual single-channel switches.

Replacement Considerations

SN74CBT3244DGVR: Octal FET Bus Switch in 20-TVSOP package.