SN74CBTLVR16292LR

Overview

The SN74CBTLVR16292LR is a low-voltage 12-bit 1-of-2 high-speed FET multiplexer/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 3.6 V and supports an operating temperature range from -40°C to 85°C. The device features rail-to-rail switching on data I/O ports, internal 500-Ω pulldown resistors to ground, and input/output ports with equivalent 25-Ω series resistors. It includes Ioff support for partial-power-down mode operation and make-before-break functionality. The component is housed in a 56-pin SSOP (DL) package.

Feature Summary

• Supports partial-power-down applications using Ioff feature to prevent damaging backflow current when powered down
• Rail-to-rail switching capability on data I/O ports
• Make-before-break feature ensures continuous connection during port transitions
• Input/output ports include equivalent 25-Ω series resistors to reduce overshoot and undershoot

Applications

• Partial-power-down mode operations
• High-speed signal routing
• Data bus multiplexing

Procurement Notes

Verify the specific ordering suffix 'LR' corresponds to the tape and reel packaging format as documented in the manufacturer's ordering information. Confirm that the DL package designation matches the required SSOP physical dimensions and pinout for your PCB layout. Ensure compatibility with the specified 2.3 V to 3.6 V supply voltage range for your target application environment.

Selection Notes

Select this component for designs requiring low-voltage operation between 2.3 V and 3.6 V. Consider the 56-pin SSOP package if space constraints align with its dimensions. Evaluate the need for internal pulldown resistors and series resistance characteristics for signal integrity requirements. Verify that the make-before-break timing meets system transition specifications.

Part Context

This device belongs to the Widebus family of logic components from Texas Instruments. It is part of the SN74CBTLV series, which focuses on low-voltage, high-speed switching applications. The LR suffix indicates a specific tape and reel packaging variant within the broader SN74CBTLVR16292 product line.

Replacement Considerations

SN74CBTLVR16292DL

FAQ

How does the Ioff feature function?

The Ioff feature ensures that damaging current will not backflow through the device when it is powered down, providing isolation during power-off states.

What is the purpose of the internal 500-Ω pulldown resistors?

The internal 500-Ω pulldown resistors connect to ground to help define the state of unused or floating inputs/outputs without requiring external components.