TMUXHS4412IRUAR

Overview

The TMUXHS4412IRUAR is a high-speed bidirectional passive analog multiplexer and demultiplexer switch manufactured by Texas Instruments. It provides four differential channels supporting data rates up to 20Gbps, including PCIe 4.0 signaling at 16Gbps. The device operates on a single supply voltage of either 1.8V or 3.3V, with an active current consumption of 320µA and standby current of 0.1µA. It features a -3dB differential bandwidth of 13GHz and accommodates common-mode voltages from 0V to 1.8V. The component is housed in a 42-pin WQFN package measuring 9mm x 3.5mm and supports an industrial temperature range of -40°C to +105°C.

Feature Summary

• Provides bidirectional passive switching for four differential channels in 2:1 mux or 1:2 demux configurations
• Supports high-speed interfaces up to 20Gbps with adaptive common-mode voltage tracking
• Features ultra-low power consumption with distinct active and standby modes
• Optimized silicon design ensures minimal signal attenuation and low intra-pair skew

Applications

• PCI Express lane switching between slots in PC and server motherboards
• Routing signals for USB 3.2, USB 4.0, Thunderbolt 3.0, and DisplayPort 2.0
• Data center and enterprise computing infrastructure interconnects
• Medical applications and test and measurement equipment
• Factory automation, control systems, and aerospace defense electronics

Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +105°C) compared to the commercial variant. Confirm the 'RUA' suffix corresponds to the 42-pin WQFN package format. Ensure the ordering code matches the required supply voltage mode and that AC coupling capacitors are selected according to the specific interface specifications during procurement planning.

Selection Notes

Select this component when designing systems requiring passive routing of high-speed differential signals without active signal conditioning. Ensure the electrical channel maintains sufficient signal integrity margins as the device does not amplify signals. Verify that the common-mode voltage requirements of the connected devices fall within the 0V to 1.8V range supported by the 3.3V supply mode. Consider pin-to-pin redriver alternatives if excessive board loss is anticipated.

Part Context

This part belongs to the TMUXHS4412 series of high-speed multiplexer switches. It is designed specifically for demanding digital interfaces requiring low insertion loss and high isolation. The device serves as a critical interconnect solution for managing multiple high-speed lanes in compact form factors, enabling flexible system architectures in modern computing and communication hardware.

Replacement Considerations

The DS160PR421 and DS160PR412 are confirmed pin-to-pin compatible alternatives. These devices offer integrated linear redriver functionality for signal conditioning while maintaining the same physical footprint and pinout configuration.