SN74CB3Q16211DGG

Overview

The SN74CB3Q16211DGG is a 24-bit FET bus switch from the Widebus family, organized as two independent 12-bit switches. It operates on a single supply voltage (VCC) ranging from 2.3 V to 3.6 V and supports bidirectional data flow with near-zero propagation delay. The device utilizes a charge pump to achieve low and flat ON-state resistance (ron), enabling rail-to-rail switching on data I/O ports. It features 5-V tolerant I/Os regardless of power state, low input/output capacitance to minimize signal distortion, and integrated undershoot clamp diodes for data and control inputs.

Feature Summary

• High-bandwidth data path supporting up to 500 MHz
• Rail-to-rail switching capability across supported voltage levels
• Integrated Ioff circuitry for partial-power-down mode operation
• Robust latch-up performance exceeding 100 mA per JESD 78 Class II

Applications

• PCI interface systems
• Differential signal interfaces
• Memory interleaving architectures
• Bus isolation circuits
• Low-distortion signal gating

Procurement Notes

Verify that the ordering suffix 'DGG' corresponds specifically to the 56-pin TSSOP package variant. Confirm the active production status via the manufacturer's official product folder or latest orderable addendum. Ensure compatibility with the required operating temperature range of -40°C to 85°C. Validate that the specific batch meets RoHS compliance standards as indicated in current documentation.

Selection Notes

Select this component when designing broadband communications or data-intensive computing systems requiring high-bandwidth signal routing. It is suitable for applications needing simultaneous support for multiple signaling levels including 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V. Consider its low power consumption and fast switching frequency characteristics for portable or embedded audio and video equipment.

Part Context

This device belongs to the Texas Instruments Widebus family, designed for optimized interface solutions in networking and computing. It serves as a high-performance alternative to standard logic switches by providing superior signal integrity through low capacitance and flat resistance profiles. The SN74CB3Q16211 is part of the CB3Q series, which is qualified for automotive and industrial environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided datasheet text. Designers should consult the manufacturer's official replacement guide or cross-reference tools for verified equivalents.