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Diodes Incorporated PI3DBS16215ZBBEX
- Part No.:
- PI3DBS16215ZBBEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Analog Switches - Special Purpose
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
PI3DBS16215ZBBEX.pdf
- Description:
- PCIE SWITCH V-QFN2545-20
- Quantity:
- Payment:
- Shipping:
Inventory:3,095
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Product details
Overview
PI3DBS16215ZBBEX from Diodes Incorporated is a 3.3V, bidirectional 2:1 differential mux/demux switch for high-speed serial interfaces, supporting up to 20Gbps data rates with 14GHz bandwidth, <1ps bit-to-bit skew, and -1.3dB insertion loss at 5GHz/8GHz. It routes USB3.1 Gen 2, Thunderbolt 3, SAS3, and PCIe 4.0 differential lanes in compact TQFN-20 packaging.
For engineers reviewing the PI3DBS16215ZBBEX datasheet, PI3DBS16215ZBBEX pinout, PI3DBS16215ZBBEX application, or PI3DBS16215ZBBEX equivalent, key selection criteria include differential channel count (2), signal integrity metrics (7ps channel-to-channel skew, -21dB return loss @5GHz), industrial temperature range (-40°C to +85°C), and RoHS 3/Green compliance.
Technical Context
The PI3DBS16215 operates as a single-lane, dual-differential-channel analog switch with two independent 2:1 mux/demux paths (A0+/A0−/A1+/A1− → C0+/C0−; B0+/B0−/B1+/B1− → C1+/C1−), controlled by SEL and PD pins. Its architecture minimizes impedance discontinuity to preserve signal integrity across 20Gbps NRZ signals.
It supports bidirectional operation without direction control, features low-power shutdown (300µA typ active, <1µA in power-down), and is optimized for PCB layouts targeting USB3.1/Thunderbolt 3 routing constraints - including matched trace lengths and minimized crosstalk via internal channel isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 20Gbps - supports USB3.1 Gen 2 (10Gbps per lane), Thunderbolt 3 (20Gbps per lane), and SAS3 (12Gbps) full-rate operation. |
| 3dB Bandwidth | 14GHz - ensures minimal amplitude distortion for high-frequency NRZ/PAM-4 eye diagrams up to 20Gbps. |
| Insertion Loss | -1.3dB @ 5GHz & 8GHz; -2dB @ 10GHz - maintains sufficient signal margin for receiver sensitivity in 10–20Gbps links. |
| Return Loss | -21dB @ 5GHz, -13dB @ 8GHz, -9dB @ 10GHz - indicates good impedance matching to 100Ω differential traces, reducing reflections. |
| Skew | 1ps bit-to-bit typ; 7ps channel-to-channel typ - preserves eye alignment critical for multi-lane timing convergence. |
| Supply Voltage | 3.3V ±10% - compatible with standard I/O rails in host controllers and retimers without level-shifting. |
| Operating Temp | -40°C to +85°C - validated for industrial-grade embedded systems and docking station environments. |
Pinout & Package
Package: ZBB - 20-contact, 2.5mm × 4.5mm Very-Thin Quad-Flat No-Lead (TQFN), RoHS 3 and Halogen/Antimony-free "Green" compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0+, A0− | Differential Input Pair 0 | First source differential lane for mux path to C0+/C0−; matched length required for skew control. |
| A1+, A1− | Differential Input Pair 1 | Second source differential lane selectable to C0+/C0− via SEL; identical electrical characteristics to A0 pair. |
| B0+, B0− | Differential Input Pair 2 | First source differential lane for second mux path to C1+/C1−; electrically isolated from A-path. |
| B1+, B1− | Differential Input Pair 3 | Second source differential lane selectable to C1+/C1−; enables dual independent 2:1 switching functions. |
| C0+, C0− | Differential Output Pair 0 | Mux output for A0/A1 selection; routed to host controller or connector per layout. |
| C1+, C1− | Differential Output Pair 1 | Mux output for B0/B1 selection; supports independent signal routing (e.g., alternate port or alternate protocol). |
| SEL | Channel Select Control | Logic-level input selecting A0/A1 (SEL=0) or B0/B1 (SEL=1); no pull-up/down required. |
| PD | Power-Down Enable | Active-low control disabling all channels and reducing supply current to <1µA; used for dynamic power gating. |
Key Features
| Feature | Design Value |
|---|---|
| 20Gbps Signal Support | Validated for USB3.1 Gen 2, Thunderbolt 3, and SAS3 protocols without equalization or retiming. |
| Ultra-Low Skew | 1ps bit-to-bit and 7ps channel-to-channel skew enable tight timing budgets in multi-source docking applications. |
| Optimized Impedance Matching | Minimized insertion loss and return loss across 5–10GHz ensure >12dB eye height margin at 20Gbps. |
| Bidirectional Operation | No direction pin or voltage polarity dependency - simplifies PCB routing and firmware control logic. |
| Low-Power Shutdown | Sub-1µA quiescent current in PD mode reduces system standby power in portable dock designs. |
Applications
| USB3.1 Gen 2 Docking Station | Thunderbolt 3 Add-in Card |
|---|---|
Use Scenario: Switching between two upstream USB3.1 sources (host CPU and external controller) to a single downstream Type-C port. IC Role / Device Role / Timing Role: Dual 2:1 mux routing differential lanes while preserving eye diagram integrity and minimizing inter-pair skew. Use Value: Enables seamless source arbitration without signal degradation, meeting USB-IF compliance for 10Gbps link training and LTSSM timing. | Use Scenario: Multiplexing two Thunderbolt 3 host controllers (e.g., CPU + PCH) to one physical connector on a PCIe expansion card. IC Role / Device Role / Timing Role: Bidirectional 20Gbps lane selector with sub-1ps skew, maintaining TB3 PHY layer timing alignment. Use Value: Eliminates need for discrete retimers or FPGA-based switching, reducing BOM cost and board area in add-in cards. |
| SAS3 Enterprise Storage Backplane | PCIe 4.0 Switching Hub |
Use Scenario: Selecting between two SAS3 initiators (dual-controller RAID array) to a shared expander or drive backplane. IC Role / Device Role / Timing Role: Low-loss, low-crosstalk 12Gbps differential switch ensuring SAS-3.0 specification compliance for link training and error recovery. Use Value: Maintains BER <10⁻¹² over 30cm FR4 traces, avoiding costly rework due to signal integrity failure during qualification. | Use Scenario: Dynamic PCIe 4.0 x4 lane allocation between GPU and NVMe SSD in embedded edge server platforms. IC Role / Device Role / Timing Role: High-fidelity 16Gbps differential mux enabling hot-plug-aware lane reallocation without PHY reset. Use Value: Supports PCIe 4.0 L0s/L1 power state transitions with <5ns added latency, preserving link stability during runtime reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed differential mux/demux applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3DV642RHAR | 64-channel, 3.3V, 6Gbps max; lower bandwidth (6.5GHz), higher insertion loss (-2.5dB @ 3GHz) | Targeted for HDMI 2.0/DisplayPort 1.2, not validated for 20Gbps protocols | Use only for ≤6Gbps video/audio switching where skew tolerance >10ps is acceptable. |
| MAX4945ATA+ | Single 2:1 mux, 10Gbps max, 8GHz bandwidth, -1.8dB IL @ 5GHz, requires external biasing | Designed for SATA/SAS2 (6Gbps) and PCIe 3.0 (8Gbps), lacks 20Gbps validation | Select when thermal budget limits 20Gbps operation or when single-lane simplicity outweighs bandwidth headroom. |
Compared with TS3DV642RHAR and MAX4945ATA+, the PI3DBS16215ZBBEX delivers 3.3× higher bandwidth and 10dB better return loss at 10GHz, making it the only option qualified for Thunderbolt 3 and USB3.1 Gen 2 full-rate operation in production docking hardware.
Availability
PI3DBS16215ZBBEX is available at Aetrix Electronics and suitable for USB3.1 Gen 2 docking stations, Thunderbolt 3 add-in cards, and SAS3 enterprise storage backplanes requiring stable component supply and long-term industrial lifecycle support.
Supply support for PI3DBS16215ZBBEX 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 integrated circuits, specializing in high-performance analog, logic, and interface solutions for industrial, computing, and communications markets.
The PI3DBS16215 belongs to Diodes' high-speed signal integrity product line, engineered specifically for USB, Thunderbolt, SAS, and PCIe protocol-aware switching in space-constrained, thermally demanding docking and storage systems.
FAQ
What is the maximum supported data rate for PI3DBS16215ZBBEX?
The PI3DBS16215ZBBEX is characterized and specified for operation up to 20Gbps (NRZ), validated with USB3.1 Gen 2, Thunderbolt 3, and SAS3.0 compliance test patterns. Its 14GHz bandwidth and low-skew design ensure full-rate operation without equalization or retiming in typical FR4 PCB environments.
Does PI3DBS16215ZBBEX require external termination resistors?
No. The PI3DBS16215ZBBEX integrates on-die 100Ω differential termination and is designed for direct connection to 100Ω transmission lines. External termination is neither required nor recommended, as it would degrade return loss and increase insertion loss beyond datasheet specifications.
Can PI3DBS16215ZBBEX operate with 1.8V or 2.5V supplies?
No. The device is specified exclusively for 3.3V ±10% operation. Supply voltages below 2.97V or above 3.63V may cause undefined switching behavior, increased insertion loss, or failure to meet 20Gbps timing margins. No 1.8V/2.5V variant exists in this family.
How is channel selection controlled on PI3DBS16215ZBBEX?
Channel selection is controlled by the SEL pin: logic low selects A0+/A0− and A1+/A1− inputs to C0+/C0− and C1+/C1− outputs respectively; logic high selects B0+/B0− and B1+/B1− inputs. SEL is CMOS-compatible, requires no pull resistors, and has no minimum pulse width requirement for static configuration.
PI3DBS16215ZBBEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- USB
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Switch Circuit:
- SPDT
- Number of Channels:
- 2
- On-State Resistance (Max):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- -3db Bandwidth:
- 14GHz
- Features:
- USB 3.1
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (2.5x4.5)
PI3DBS16215ZBBEX FAQ
1.How can I place an order for PI3DBS16215ZBBEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3DBS16215ZBBEX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PI3DBS16215ZBBEX reliable?
The price and inventory of PI3DBS16215ZBBEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3DBS16215ZBBEX is usually 5 days.
3.What payment methods are accepted for PI3DBS16215ZBBEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3DBS16215ZBBEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3DBS16215ZBBEX?
PI3DBS16215ZBBEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3DBS16215ZBBEX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PI3DBS16215ZBBEX?
For technical support, including PI3DBS16215ZBBEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3DBS16215ZBBEX requirements.
6.How does Aetrix verify that PI3DBS16215ZBBEX is sourced from the original manufacturer or authorized distributors?
All PI3DBS16215ZBBEX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PI3DBS16215ZBBEX meets industry standards.
7.What is the process for return or replacement of PI3DBS16215ZBBEX?
All PI3DBS16215ZBBEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3DBS16215ZBBEX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PI3DBS16215ZBBEX part is unused and in its original packaging.
Return procedure for PI3DBS16215ZBBEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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