Diodes Incorporated PI3DBS12212AXUAEX

Overview

PI3DBS12212AXUAEX from Diodes Incorporated is a 2-channel, 2:1 bidirectional differential multiplexer/demultiplexer switch optimized for high-speed serial interfaces. It supports data rates up to 12 Gbps, delivers 10.6 GHz 3 dB bandwidth, achieves 7 ps typical channel-to-channel skew, and is packaged in an 18-contact, 2×2 mm X2QFN (XUA18) for USB3.1, Thunderbolt, and SAS3.0 routing applications.

For engineers reviewing the PI3DBS12212AXUAEX datasheet, PI3DBS12212AXUAEX pinout, PI3DBS12212AXUAEX application, or PI3DBS12212AXUAEX equivalent, key selection criteria include insertion loss (-1.5 dB @ 5 GHz), return loss (-19.6 dB @ 5 GHz), crosstalk (-30.5 dB @ 6 GHz), supply voltage (3.3 V), and industrial temperature range (-40°C to +85°C).

Technical Context

The PI3DBS12212AXUAEX implements a passive analog switch architecture with matched differential paths and controlled impedance layout targeting USB3.1 Gen 2 and SAS3.0 compliance. Its design minimizes bit-to-bit skew (1 ps typ) and channel-to-channel skew (7 ps typ) through symmetrical trace routing and low-parasitic terminal placement.

It operates bi-directionally with no internal termination or active equalization-relying on external AC coupling and host-side signal conditioning. The 3.3 V supply powers only control logic (200 µA typ); signal path conduction is fully passive, preserving signal integrity up to 12 Gbps without DC bias dependency.

Key Specifications

Pinout & Package

Package: 18-contact, 2×2 mm X2QFN (XUA18), exposed thermal pad, RoHS-compliant and halogen-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TS3USB30E, PI3DBS12212AXUAEX enables next-generation 12 Gbps protocols; compared with PI3DBS12212AZBEX, it trades package size for compactness while retaining identical electrical performance and thermal derating at 85°C ambient.

Availability

PI3DBS12212AXUAEX is available at Aetrix Electronics and suitable for USB3.1 Gen 2 docking stations, Thunderbolt 3 port replicators, and SAS3.0 enterprise storage subsystems requiring stable component supply and long-term production continuity.

Supply support for PI3DBS12212AXUAEX 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 manufacturing in China, Taiwan, and the U.S.

The PI3DBS series targets high-speed interface signal routing, specifically engineered for USB, Thunderbolt, SAS, and 10GbE applications where passive, low-skew, and low-loss switching is mandatory.

FAQ

What is the maximum supported data rate for PI3DBS12212AXUAEX?

The PI3DBS12212AXUAEX supports data rates up to 12 Gbps, validated per USB3.1 Gen 2, SAS3.0, and Thunderbolt 3 specifications. This is confirmed by its 10.6 GHz 3 dB bandwidth and measured insertion loss of -1.5 dB at 5 GHz, which meets the channel loss budget for 12 Gbps NRZ signaling.

Does PI3DBS12212AXUAEX require external termination resistors?

No. The PI3DBS12212AXUAEX does not integrate on-die termination; external 100 Ω differential AC-coupling capacitors and host-side termination (typically at the controller or PHY) are required. Its design assumes standard 100 Ω differential trace impedance and relies on system-level matching for optimal return loss.

Can PI3DBS12212AXUAEX operate with 1.8 V control logic?

No. The SEL and PD inputs are specified for 3.3 V CMOS logic levels only, with VIH(min) = 2.0 V and VIL(max) = 0.8 V. Driving these pins with 1.8 V logic may result in undefined switching behavior or failure to latch state, as confirmed in the DC Electrical Characteristics table of the official datasheet.

Is the XUA18 package lead-free and RoHS-compliant?

Yes. The PI3DBS12212AXUAEX carries the "E" suffix indicating full compliance with EU RoHS directives 2002/95/EC, 2011/65/EU, and 2015/863/EU. It is also halogen- and antimony-free ("Green"), with bromine and chlorine content below 900 ppm each and antimony below 1000 ppm, as verified by Diodes Incorporated's material declarations.