SN74CB3T16211GQLR

Overview

The SN74CB3T16211GQLR is a high-speed TTL-compatible FET bus switch from the Widebus family, organized as two independent 12-bit switches within a single VFBGA package. It operates on a supply voltage (VCC) ranging from 2.3 V to 3.6 V and supports bidirectional data flow with near-zero propagation delay. The device features low ON-state resistance (ron = 5 Ω typ) and low input/output capacitance (Cio(OFF) = 5 pF typ). It provides mixed-mode signal operation by translating voltages that track VCC, allowing 5-V tolerant I/Os even when powered down.

Feature Summary

• Supports mixed-mode signal operation with voltage translation tracking VCC
• Features 5-V tolerant I/Os for compatibility across different logic levels
• Enables partial-power-down mode via Ioff isolation during power-off states

Applications

• Level translation between 5-V and 3.3-V systems
• PCI interface connections
• Bus isolation in digital applications

Procurement Notes

Verify the specific GQL suffix indicates the VFBGA package configuration. Confirm RoHS compliance and lead finish details against the latest Package Option Addendum. Ensure design-in requirements match the -40°C to 85°C operating temperature range and the 2.3 V to 3.6 V supply voltage specifications provided in the datasheet.

Selection Notes

Select this component for designs requiring low propagation delay and minimal loading on high-speed buses. 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 system can accommodate the specific VFBGA footprint and thermal characteristics of the GQL package.

Part Context

This device belongs to Texas Instruments' Widebus family of high-performance bus switches. It is designed to replace older discrete switching solutions by integrating multiple channels into a compact form factor. The SN74CB3T16211 series offers flexibility in configuring 12-bit or 24-bit wide buses depending on the application's pin count and bandwidth requirements.

Replacement Considerations

Check for SN74CB3T16211DGGR or SN74CB3T16211DLR if alternative packages like TSSOP or SSOP are required. Verify functional equivalence regarding voltage translation and pinout compatibility before substitution.