SN74CBTS3384DBQR

Overview

The SN74CBTS3384DBQR is a 10-bit FET bus switch manufactured by Texas Instruments, housed in a 24-pin SSOP (QSOP) package. It features Schottky diode clamping on the I/Os to prevent undershoot. The device operates with a supply voltage range of 4 V to 5.5 V and an operating temperature range of -40°C to 85°C. It consists of two independent 5-bit bus switches, each controlled by separate output-enable inputs. Electrical characteristics include a maximum on-state resistance of 20 Ω at VCC = 4 V and propagation delays as low as 0.25 ns at VCC = 5 V.

Feature Summary

• Provides ten bits of high-speed TTL-compatible bus switching capability
• Integrates Schottky diodes on I/Os to clamp signal undershoot
• Organized as two independent 5-bit bus switches with separate control

Applications

• High-speed data bus routing
• Portable equipment signal switching
• Consumer electronics bus management

Procurement Notes

Verify the specific ordering suffix 'DBQR' corresponds to the tape and reel packaging format and the SSOP (QSOP) physical outline. Confirm that the component status aligns with current production requirements, as datasheet revisions may impact availability or lifecycle status. Ensure compatibility with standard surface-mount assembly processes for the specified package type.

Selection Notes

Select this component when designing circuits requiring 10-bit parallel data path switching with minimal propagation delay. The inclusion of Schottky diodes makes it suitable for applications where signal integrity protection against undershoot is necessary. Verify that the required supply voltage falls within the 4 V to 5.5 V range and that the thermal performance of the SSOP package meets the system's dissipation needs.

Part Context

This part belongs to the SN74CBTS3384 family of 10-bit FET bus switches. The 'DBQR' suffix specifically denotes the SSOP (QSOP) package variant supplied in tape and reel form. This distinguishes it from other variants such as the DW (SOIC), PW (TSSOP), or DGV (TVSOP) packages, which share the same internal logic but differ in physical dimensions and mounting styles.

Replacement Considerations

Direct pin-to-pin replacements must match the 24-pin SSOP/QSOP footprint and the 10-bit switching architecture. Verify that any substitute component supports the same 4 V to 5.5 V supply range and offers comparable on-state resistance and propagation delay specifications.