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Product Detailed Parameters
- Description：IC SW DPST, SPDTX4 8OHM 42WQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：DPST, SPDT
- Multiplexer/Demultiplexer Circuit：1:2, 2:1
- On-State Resistance (Max)：8Ohm
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：1.71V ~ 1.91V, 3V ~ 3.6V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：130ns, 100ns
- -3db Bandwidth：13GHz
- Charge Injection：-
- Channel Capacitance (CS(off), CD(off))：-
- Current - Leakage (IS(off)) (Max)：-
- Crosstalk：-54dB @ 10GHz
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：42-WFQFN Exposed Pad
- Supplier Device Package：42-WQFN (3.5x9)
- Number of Circuits：4
- Grade：-
- Qualification：-
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Overview
The TMUXHS4412RUAT is a high-speed multiplexer/demultiplexer IC from Texas Instruments, featuring four differential channels with a 2:1 or 1:2 configuration. It supports data rates up to 20 Gbps and offers a -3dB differential bandwidth of 13 GHz. The device operates on a single supply voltage ranging from 1.71 V to 3.6 V, typically 1.8 V or 3.3 V. Key electrical parameters include a maximum on-resistance of 8.4 Ohms, typical off-isolation of -57 dB, and propagation delay of 50 ps. Switching times are limited to 100 ns for both rise and fall periods. It is housed in a WQFN-42 package.
Feature Summary
- Provides bidirectional passive switching for four differential signal paths
- Supports high-speed interfaces including PCIe 4.0, USB 3.2/4.0, and Thunderbolt 3.0
- Features adaptive common-mode voltage tracking for flexible signal levels
- Delivers excellent dynamic characteristics with low insertion loss and return loss
Applications
- PC and notebook computers
- Gaming, home theater, entertainment, and TV systems
- Data center and enterprise computing infrastructure
- Medical equipment and test/measurement instruments
- Factory automation and aerospace/defense applications
Procurement Notes
Verify the specific suffix RUAT indicates the tape-and-reel packaging format distinct from other variants. Confirm the industrial temperature grade (-40°C to +85°C) matches system requirements. Ensure ESD handling protocols are followed due to moisture sensitivity classification. Cross-reference the datasheet revision date to confirm parameter stability before finalizing procurement specifications.
Selection Notes
Select this component when differential signaling at speeds up to 20 Gbps is required. It is suitable for replacing linear redrivers like the DS160PR421 in pin-to-pin designs. Consider the 1.8 V or 3.3 V single-supply operation for power efficiency. The WQFN-42 package is appropriate for space-constrained PCB layouts requiring high channel density.
Part Context
This part belongs to the TMUXHS4412 series of high-speed mux/demux devices. It shares functional similarities with the TMUXHS4412IRUAT but may differ in temperature range or packaging quantity. The series is designed to support modern high-bandwidth interfaces such as PCIe 4.0 and USB 4.0, offering a compact alternative to discrete switching solutions.
Replacement Considerations
The DS160PR421 and DS160PR412 are confirmed pin-to-pin compatible alternatives within the same family. Verify that substitute parts maintain the same 2:1/1:2 configuration and differential channel count. Check if the replacement meets the specific 13 GHz bandwidth requirement.
