SN74CBTH16211DGGR

Overview

The SN74CBTH16211DGGR is a 24-bit FET bus switch manufactured by Texas Instruments, housed in a 56-pin TSSOP package. It operates on a single supply voltage ranging from 4 V to 5.5 V and supports an operating temperature range of -40°C to 85°C. The device features TTL-compatible input levels and includes active bus-hold circuitry on data inputs/outputs to maintain valid logic states without external pullup or pulldown resistors. It is organized as dual 12-bit bus switches with separate output-enable (OE) inputs.

Feature Summary

• Provides 24 bits of high-speed bus switching with low on-state resistance for minimal propagation delay.
• Features active bus-hold circuitry that eliminates the need for external pullup or pulldown resistors.
• Supports TTL-compatible input levels for direct interfacing with standard logic families.

Applications

• High-speed data routing between ports
• Bus exchange applications requiring isolated signal paths
• System architectures needing floating port management

Procurement Notes

Verify the specific ordering suffix against current TI documentation to confirm package type and availability status. Confirm RoHS compliance and moisture sensitivity level ratings prior to procurement. Ensure design compatibility with the specified 4 V to 5.5 V supply voltage range and -40°C to 85°C operating temperature limits.

Selection Notes

Select this component when designing systems requiring 24-bit bidirectional data transfer with independent control over two 12-bit segments. The integrated bus hold feature simplifies board layout by removing passive components typically required for unused lines. Ensure OE pins are tied to VCC during power-up to guarantee a high-impedance state.

Part Context

This part belongs to the SN74CBT series of FET bus switches designed for high-speed digital applications. It serves as a bridge between different system blocks, allowing flexible configuration of data pathways while maintaining signal integrity through low on-resistance characteristics.

Replacement Considerations

Public confirmed substitute part numbers: SN74CBT16211ADGGR, SN74CBT16211CDGGR, SN74CBTD16211DGGR, SN74CBTS16211DGGR, FST16211MTDX.

FAQ

How does the bus hold feature function?

Active bus-hold circuitry holds unused or floating A and B ports at a valid logic level, eliminating the need for external pullup or pulldown resistors.

What is the recommended OE pin configuration during power-up?

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor.