SN74CB3T3383DWR

Overview

The SN74CB3T3383DWR is a high-speed TTL-compatible FET bus-exchange switch in a 24-pin SOIC (DW) package. It operates with a supply voltage range of 2.3 V to 3.6 V and supports data I/O voltages from 0 V to 5.5 V. The device features bidirectional data flow with near-zero propagation delay, low ON-state resistance (typical 5 Ω), and low input/output capacitance (typical 8 pF). It includes an enable (BE) input for bus-exchange functionality and supports mixed-mode signal operation.

Feature Summary

• Supports mixed-mode signal operation by providing voltage translation that tracks VCC
• Features 5-V-tolerant I/Os allowing operation when the device is powered up or down
• Includes Ioff support to prevent damaging backflow current during partial-power-down mode
• Provides bidirectional data flow with low ON-state resistance and minimal loading

Applications

• Level translation between different logic families
• Memory interleaving systems
• Bus isolation applications

Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the tape-and-reel packaging format rather than tube packaging. Confirm the manufacturer part number matches Texas Instruments documentation. Ensure the component meets RoHS compliance requirements as specified in the official datasheet before finalizing procurement orders.

Selection Notes

Select this component for designs requiring low-voltage operation between 2.3 V and 3.6 V with 5-V tolerant interfaces. The bus-exchange capability via the BE and BX inputs allows flexible routing between four signal ports. Ensure control inputs are driven by compatible TTL or CMOS levels within the specified voltage ranges for proper switching behavior.

Part Context

This device belongs to the SN74CB3T3383 family of digital bus switches manufactured by Texas Instruments. It is designed for low-power portable equipment and high-speed data transfer applications. The DW package variant specifically denotes the SOIC surface-mount configuration suitable for automated assembly processes.

Replacement Considerations

SN74CB3T3383DW serves as the tube-packaged equivalent of this part number.