74CB3T3383DBQRG4

Signal Switches, Multiplexers, Decoders Overview

The SN74CB3T3383DBQRG4 is a high-speed TTL-compatible FET bus-exchange switch manufactured by Texas Instruments. It operates within a VCC 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 provides 5-V-tolerant I/Os, bidirectional data flow, and low ON-state resistance (ron = 5 Ω typical). It features low input/output capacitance (Cio(OFF) = 8 pF typical), undershoot clamp diodes, and low power consumption (ICC = 20 µA max). Packaged in a 24-pin SSOP (DBQ) format, it supports partial-power-down applications using the Ioff feature.

Signal Switches, Multiplexers, Decoders Feature Summary

• Supports mixed-mode signal operation with output voltage translation that tracks VCC
• Provides 5-V-tolerant I/Os for compatibility with various signaling levels
• Enables partial-power-down mode operation via the Ioff feature to prevent backflow current
• Features bidirectional data flow with near-zero propagation delay

Signal Switches, Multiplexers, Decoders Applications

• Level translation between different logic families
• Memory interleaving systems
• Bus isolation in digital circuits

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the component status as obsolete before procurement planning. Confirm the package type matches the DBQ drawing specifications. Ensure design-in includes pullup resistors on the BE pin for proper high-impedance state during power cycles. Check RoHS compliance documentation for lead-free soldering requirements.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a 10-bit bus switch or 5-bit bus-exchange function is required with 5-V tolerance. It is suitable for portable equipment due to low power consumption. Ensure control inputs are driven by TTL or 5-V/3.3-V CMOS outputs. Verify that the operating temperature range meets system requirements.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74CB3T3383 series of low-voltage bus switches. It is designed for high-speed data exchange with minimal loading effects. The device integrates FET switches with control logic for precise data path management. It is commonly used in systems requiring flexible bus architecture and voltage level shifting.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Public confirmed substitute: SN74CBTLV3383DBQR.