TMUXHS221LVNKGT

Overview

The TMUXHS221LVNKGT is a high-speed bidirectional analog passive switch configured as a 2:1 multiplexer or 1:2 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 signals up to 3 Gbps and single-ended CMOS signaling within a voltage range of −0.3 V to 3.6 V. 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.
• Provides ultra-low channel ON resistance and high bandwidth to maintain signal integrity at data rates up to 3 Gbps.
• Features failsafe leakage current protection and allows data pins to tolerate voltages up to 5.5 V.
• Supports flexible switching configurations via SEL and OEn control pins with negligible 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 clocks with low added jitter for system synchronization.
• Implementing DisplayPort Alternate mode cross-muxing via USB Type-C SBU signals.

Procurement Notes

Verify the specific ordering suffix NKGT indicates a small tape-and-reel carrier containing 250 units, distinct from the large reel variant. Confirm that the RoHS compliance status and lead finish (NIPDAU) align with manufacturing requirements. Ensure the moisture sensitivity level (MSL 1) and peak reflow temperature limits are accounted for during assembly processing.

Selection Notes

Select this component when designing systems requiring a passive switch for USB 2.0 or eUSB2 signals up to 3 Gbps. It is suitable for applications needing low insertion loss and high off-isolation. Verify that the external biasing requirements for the data lines are met, as the device lacks internal biasing. Ensure the control logic voltage levels match the 1.2 V or 1.8 V input specifications.

Part Context

This part belongs to the Texas Instruments TMUXHS221LV family of high-speed multiplexer switches. It is designed specifically for high-frequency signal routing where signal integrity is critical. The NKG package designation refers to the 10-pin Ultra Quad Flat No-lead configuration, providing a compact footprint for space-constrained PCB layouts.

Replacement Considerations

The datasheet notes pin-to-pin and BOM-to-BOM compatibility with multiple sources. Verify specific substitute part numbers against the manufacturer's official cross-reference documentation before implementation.