Diodes Incorporated PI3DBS16413ZHEX

Overview

PI3DBS16413ZHEX from Diodes Incorporated is a 12-to-4 differential channel, bi-directional 3:1 multiplexer/demultiplexer switch optimized for USB3.1 Gen 2 (10 Gbps), Thunderbolt 3 (20 Gbps), SAS3.0 (12 Gbps), and PCIe 4.0 signal routing. It supports up to 20 Gbps data rate, features 12 GHz 3dB bandwidth, and delivers low insertion loss (−1.1 dB @ 5 GHz) and 10 ps typical channel-to-channel skew in a 42-pin TQFN package.

For engineers reviewing the PI3DBS16413ZHEX datasheet, PI3DBS16413ZHEX pinout, PI3DBS16413ZHEX application, or PI3DBS16413ZHEX equivalent, key selection criteria include differential impedance matching (100 Ω), sub-10 ps skew tolerance, insertion loss profile across 2.5–10 GHz, and compatibility with high-speed PCB layout constraints for USB3.1/Thunderbolt 3 channel routing.

Technical Context

The PI3DBS16413ZHEX implements a fully differential, 3:1 Mux/DeMux architecture with two independent 3-input/1-output differential lanes (A/B/C → D), each supporting bidirectional signal flow. Its internal switch matrix uses low-capacitance, matched-path CMOS design to maintain 100 Ω differential impedance and minimize reflection-induced jitter.

Control logic accepts two binary select lines (SEL1A/SEL2A and SEL1B/SEL2B) per lane to route any of three differential input pairs to the common output pair. The device operates exclusively at 3.3 V supply and draws only 300 µA quiescent current, enabling integration into power-sensitive high-speed interconnects without thermal derating.

Key Specifications

Pinout & Package

Package: 42-contact, 3.5 mm × 9.0 mm, 0.5 mm pitch, Very Thin Quad Flat No-Lead (TQFN-ZH42), RoHS 3 and halogen-free compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed differential multiplexer applications.

Compared with TS3USB30EVMRTER and MAX4947ETJ+, the PI3DBS16413ZHEX uniquely supports 20 Gbps bidirectional 3:1 switching with <10 ps skew-critical for Thunderbolt 3 and SAS3.0 system-level timing closure where alternatives require retimers or compromise on lane count.

Availability

PI3DBS16413ZHEX is available at Aetrix Electronics and suitable for USB-C docking stations, enterprise NVMe backplanes, Thunderbolt 3 add-in cards, and high-speed test fixtures requiring stable component supply and long-term production continuity.

Supply support for PI3DBS16413ZHEX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and Europe, serving industrial, computing, and communications markets.

The PI3DBS16413ZHEX belongs to Diodes' Pericom high-speed signal-switching product line, engineered specifically for USB3.1 Gen 2, Thunderbolt 3, and SAS3.0 interconnect applications demanding minimal insertion loss and sub-10 ps skew.

FAQ

Does PI3DBS16413ZHEX require external termination resistors?

No. The device integrates on-die 100 Ω differential termination matching industry-standard USB3.1 and Thunderbolt 3 channel impedance. External resistors are not needed and would degrade signal integrity due to added parasitics. Layout must maintain controlled 100 Ω differential trace impedance from connector through switch to host PHY.

Can PI3DBS16413ZHEX operate with 1.8 V or 2.5 V supply?

No. The PI3DBS16413ZHEX is specified only for 3.3 V ±5% operation. Its internal switch transistors and level-shifted control logic are designed for 3.3 V rail compatibility. Using lower voltages causes undefined switching behavior, increased insertion loss, and failure to meet 20 Gbps timing specifications.

Is PI3DBS16413ZHEX pin-compatible with earlier Pericom muxes like PI3DBS12412?

No. The PI3DBS16413ZHEX uses a 42-pin TQFN package with unique pin mapping for dual-lane 3:1 operation, while PI3DBS12412 is a 32-pin device supporting only single-lane 4:1 switching. PCB redesign and layout revalidation are required for replacement.

What is the maximum recommended trace length between PI3DBS16413ZHEX and host controller?

For 20 Gbps operation, Diodes recommends ≤15 mm of 100 Ω differential microstrip between the switch output (D0+/D0−) and host controller RX pins. Longer traces increase insertion loss and skew; simulation using the provided S-parameter model (.s4p) is required beyond this length to verify eye height >12 mUI.