SN74CB3T3383DGVR

Overview

The SN74CB3T3383DGVR is a high-speed TTL-compatible FET bus-exchange switch manufactured by Texas Instruments. It operates within a VCC supply range of 2.3 V to 3.6 V and supports mixed-mode signal operation on all data I/O ports with voltage translation tracking VCC. The device features bidirectional data flow, low ON-state resistance (ron) of 5 Ω typical, and low input/output capacitance of 8 pF typical. It includes undershoot clamp diodes for data and control inputs, ensuring compatibility with 0-V to 5-V signaling levels. Packaged in a 24-pin TVSOP (DGV) format, it supports partial-power-down applications via the Ioff feature.

Feature Summary

• Supports mixed-mode signal operation with voltage translation that tracks VCC
• Provides bidirectional data flow with near-zero propagation delay
• Features low ON-state resistance and low input/output capacitance to minimize loading
• Includes Ioff support for partial-power-down mode to prevent backflow current

Applications

• Level translation between different logic families
• Memory interleaving in digital systems
• Bus isolation for signal integrity

Procurement Notes

Verify the specific ordering suffix DGVR corresponds to the TVSOP package and tape-and-reel quantity when sourcing. Confirm RoHS compliance and lead finish details against the latest manufacturer documentation. Ensure the operating temperature range meets system requirements. Cross-reference the part number with official distributors to validate authenticity and availability status before procurement.

Selection Notes

Select this component for designs requiring low-voltage operation with 5-V tolerant I/O capabilities. The bus-exchange functionality allows flexible routing between multiple signal ports using the BE and BX control inputs. Consider the low power consumption and high ESD performance for portable equipment applications where signal integrity and power efficiency are critical constraints.

Part Context

This device belongs to the SN74CB3T3383 series of high-speed FET bus switches. It is designed to interface systems using 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS standards. The series emphasizes low power consumption and fast switching speeds, making it suitable for modern digital applications requiring efficient data routing across mixed-voltage domains.

Replacement Considerations

SN74CB3T3383DBQR is a confirmed substitute part number available in an SSOP package.