SN74CBTS3384DW

Overview

The SN74CBTS3384DW is a 10-bit FET bus switch manufactured by Texas Instruments, housed in a 24-pin SOIC (DW) package. It provides high-speed TTL-compatible bus switching with Schottky diode clamping on the I/Os to prevent undershoot. The device is organized as two independent 5-bit bus switches, each featuring a separate output-enable (OE) input. When OE is low, Port A connects to Port B; when OE is high, the ports enter a high-impedance state. Recommended operating conditions specify a supply voltage range of 4 V to 5.5 V and an operating temperature range of -40°C to 85°C.

Feature Summary

• Features integrated Schottky diodes on all I/O lines to clamp negative undershoot voltages.
• Provides high-speed bus switching with low on-state resistance for minimal propagation delay.
• Organized into two independent 5-bit channels with separate control inputs.

Applications

• High-speed data bus routing
• TTL-to-CMOS level translation interfaces
• Portable equipment requiring fast signal switching

Procurement Notes

Verify that the specific orderable part number matches the required package type, as the SN74CBTS3384 family includes variants such as DWR, DBR, and PW. Confirm the status of the DW tube variant against current production lists, as availability may vary compared to tape-and-reel options. Ensure compatibility with standard SOIC footprint guidelines provided in TI documentation.

Selection Notes

Select this component when designing circuits requiring ten bits of bidirectional switching with TTL-compatible logic levels. The inclusion of Schottky diodes makes it suitable for applications where signal undershoot protection is necessary. Verify that the system operates within the 4 V to 5.5 V supply range and that the thermal characteristics of the SOIC package meet the design's heat dissipation requirements.

Part Context

This device belongs to the SN74CBTS series of high-speed bus switches from Texas Instruments. It is designed to replace slower mechanical relays or older semiconductor switches in digital systems. The DW suffix specifically denotes the standard 24-pin Small Outline Integrated Circuit package, distinguishing it from SSOP, TSSOP, or TVSOP variations within the same functional family.

Replacement Considerations

Direct substitutes include other SN74CBTS3384 variants such as SN74CBTS3384DWR (tape and reel), SN74CBTS3384DBR (SSOP), and SN74CBTS3384PW (TSSOP). These parts share identical electrical specifications but differ in physical packaging and shipping quantities.