SN74CB3Q3125DGVR

Overview

The SN74CB3Q3125DGVR is a quadruple FET bus switch from the Texas Instruments CB3Q family, designed for high-bandwidth data paths up to 500MHz. It operates on a single supply voltage ranging from 2.3V to 3.6V and features 5V tolerant I/Os that function with the device powered up or down. The device utilizes a charge pump to maintain low and flat ON-state resistance (ron) characteristics over the operating range. It supports rail-to-rail switching on data ports and provides bidirectional data flow with near-zero propagation delay.

Feature Summary

• High-bandwidth data path supporting frequencies up to 500MHz
• 5V tolerant I/Os compatible with various signaling levels including 0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V
• Low and flat ON-state resistance (ron) characteristics ensuring minimal signal distortion
• Rail-to-rail switching capability on data input/output ports

Applications

• USB interface connections
• Differential signal interfaces
• Bus isolation circuits
• Low-distortion signal gating applications

Procurement Notes

Verify the specific package type and suffix against the manufacturer's current orderable addendum to ensure compatibility with your PCB footprint and reflow profile requirements. Confirm RoHS compliance status and moisture sensitivity level ratings prior to integration into production assemblies.

Selection Notes

Select this component when designing systems requiring high-speed data switching with low insertion loss. Ensure control inputs are driven by TTL, 5V, or 3.3V CMOS outputs as specified. Verify that the application environment stays within the recommended operating temperature range of -40°C to 85°C.

Part Context

This part belongs to the SN74CB3Q series, which represents Texas Instruments' high-performance signal switching solutions. The CB3Q family is engineered for broadband communications and networking applications where signal integrity and low power consumption are critical design constraints.

Replacement Considerations

SN74CB3Q3125PWR

FAQ

How does the device handle partial-power-down scenarios?

The SN74CB3Q3125DGVR includes an Ioff circuit that prevents damaging current backflow through the device when it is powered down, allowing for safe partial-power-down mode operation.

What is the maximum switching frequency for the control input?

The maximum switching frequency for the OE control input is 20MHz under specified test conditions.