SN74CBT3384CDWR

Overview

The SN74CBT3384CDWR is a high-speed TTL-compatible FET bus switch manufactured by Texas Instruments. It features two independent 5-bit bus switches housed in a 24-pin SOIC (DW) package. The device operates within a supply voltage range of 4 V to 5.5 V and supports bidirectional data flow with near-zero propagation delay. Key electrical characteristics include a typical ON-state resistance of 3 Ω, low input/output capacitance of 5 pF, and maximum supply current of 3 µA. It provides active undershoot protection up to -2 V on A and B ports.

Feature Summary

• Active undershoot-protection circuitry ensures proper OFF state during undershoot events up to -2 V
• Supports partial-power-down mode operation via Ioff feature to prevent backflow current
• Control inputs are compatible with TTL or 5-V/3.3-V CMOS outputs
• Data I/Os support signaling levels from 0 V to 5 V

Applications

• PCI interface applications
• Memory interleaving systems
• Bus isolation circuits
• Low-distortion signal gating

Procurement Notes

Verify the specific ordering suffix 'R' corresponds to the tape-and-reel packaging configuration. Confirm that the component meets RoHS standards and Lead finish specifications as listed in the manufacturer's latest package addendum. Ensure compatibility with the required operating temperature range of -40°C to 85°C for your specific application environment.

Selection Notes

Select this component when designing systems requiring high-speed bidirectional switching with minimal signal distortion. The low ON-state resistance and capacitance make it suitable for maintaining signal integrity in high-frequency digital buses. Ensure control inputs are properly biased to maintain the high-impedance state during power-up or power-down sequences.

Part Context

This part belongs to the SN74CBT3384C series of high-speed FET bus switches. It is functionally similar to other devices in the family but distinguished by its specific pinout and packaging. The 'CDWR' designation indicates the SOIC package type and tape-and-reel shipping format, differentiating it from tube-packaged variants like the CDW.

Replacement Considerations

SN74CBTD3384CDWR