SN74CBTLV16800DLR

Overview

The SN74CBTLV16800DLR is a low-voltage 20-bit FET bus switch manufactured by Texas Instruments. It provides high-speed switching with a typical on-state resistance of 5 Ω at VCC = 3V and 9 Ω at VCC = 2.5V. The device operates within a supply voltage range of 2.3V to 3.6V and supports an operating temperature from -40°C to 85°C. It features separate output-enable inputs for dual 10-bit switches or one 20-bit switch configuration.

Feature Summary

• Precharged B-port outputs minimize signal distortion during live insertion
• Supports partial-power-down mode operation via Ioff feature
• Low on-state resistance allows connections with minimal propagation delay

Applications

• High-speed bus switching applications
• Partial-power-down systems requiring isolation during power off
• Live insertion scenarios minimizing noise

Procurement Notes

Verify the specific package variant (SSOP, TSSOP, or TVSOP) required for your design, as the DL suffix denotes SSOP. Confirm RoHS compliance and moisture sensitivity level requirements against your assembly process specifications. Ensure control inputs are tied to VCC or GND to maintain proper device operation.

Selection Notes

Select this component when low on-resistance and fast switching speeds are critical for data integrity. Consider the precharged output feature if live insertion noise reduction is necessary. Verify that the 2.3V to 3.6V supply range aligns with your system's voltage rails and that the 48-pin package fits your PCB layout constraints.

Part Context

This device belongs to the Widebus family of Texas Instruments logic products. It is designed for applications requiring multiple bits of bus switching in a single package. The SN74CBTLV16800DLR specifically utilizes the SSOP package format, distinguishing it from other pin-compatible variants like the GR or VR packages.

Replacement Considerations

Direct substitutes include SN74CBTLV16800GR and SN74CBTLV16800VR, which offer identical functionality but differ in package type (TSSOP and TVSOP respectively). Ensure mechanical fit and thermal characteristics match your board design when selecting these alternatives.