TMUXHS221LVNKGR

Overview

The TMUXHS221LVNKGR is a high-speed bidirectional analog passive switch configured as a 2:1 or 1:2 multiplexer/demultiplexer. It operates on a 1.8 V supply voltage with control logic inputs compatible with 1.2 V or 1.8 V levels. The device supports differential and single-ended CMOS signals within a voltage range of −0.3 V to 3.6 V, accommodating data rates up to 3 Gbps. Key electrical parameters include a typical channel ON resistance (RON) of 3 Ω at VI/O = 0 V, a –3 dB bandwidth of 3.3 GHz, and a propagation delay of 80 ps. It features low insertion loss of –0.4 dB and return loss of –22 dB at 240 MHz. The component is housed in a 10-pin UQFN package measuring 1.8 mm × 1.4 mm and supports an extended industrial operating temperature range from –40°C to +125°C.

Feature Summary

• Optimized for USB 2.0 and eUSB2 LS, FS, and HS physical layers with minimal signal eye attenuation.
• Supports differential signals up to 3 Gbps and most CMOS signals up to 3.3 V with 5 V tolerant data pins.
• Provides ultra-low power consumption with active current of 17 µA and shutdown current of 3 µA.
• Features matched data-paths for optimal intra-pair skew performance and low added jitter.

Applications

• Routing debug interface signals to USB ports in PCs, notebooks, and mobile devices.
• Switching USB ports between handheld portable devices and docking stations.
• Multiplexing PCIe clock signals with low added jitter.
• Implementing DisplayPort Alternate mode via USB Type-C SBU cross-muxing.

Procurement Notes

Verify the specific ordering suffix NKGR confirms the UQFN-10 package and large tape-and-reel carrier configuration. Ensure the design accounts for the 1.8 V supply requirement and 1.2/1.8 V control logic compatibility. Confirm that external biasing is provided for all channels to prevent floating states, as the device lacks internal biasing mechanisms.

Selection Notes

Select this component when designing systems requiring high-speed switching for USB 2.0 or eUSB2 interfaces up to 3 Gbps. It is suitable for applications demanding low insertion loss and minimal signal degradation. Consider the 1.8 V supply constraint and the need for external AC coupling capacitors if used in series with transmitters and receivers.

Part Context

This part belongs to the Texas Instruments TMUXHS221LV family of high-speed analog switches. The NKG suffix specifically denotes the 10-pin UQFN package variant. The device is designed to replace discrete switching solutions by integrating multiple channels into a compact form factor while maintaining signal integrity for high-frequency digital interfaces.

Replacement Considerations

The datasheet indicates pin-to-pin and BOM-to-BOM compatibility with multiple sources. Verify functional equivalence regarding RON, bandwidth, and thermal characteristics before substitution.

FAQ

Does the TMUXHS221LV support polarity inversion?

The device can tolerate polarity inversions, but polarity consistency must be maintained for all signals. It cannot change polarity from input to output.

What is the maximum data rate supported by this switch?

The TMUXHS221LV is optimized for interfaces up to 3 Gbps, including USB 2.0 HS and eUSB2 HS signaling.

How should the device be biased during operation?

The TMUXHS221LV does not contain internal biasing. All channels must be externally biased from either side to avoid floating channels.