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Diodes Incorporated PI3DBS16415ZLCEX
- Part No.:
- PI3DBS16415ZLCEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Analog Switches - Special Purpose
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
PI3DBS16415ZLCEX.pdf
- Description:
- PCIE SWITCH W-QFN3060-40
- Quantity:
- Payment:
- Shipping:
Inventory:2,075
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Product details
Overview
PI3DBS16415ZLCEX from Diodes Incorporated is a 3.3V, 2-lane 2:1 differential mux/demux switch supporting up to 20 Gbps per lane for USB3.1 Gen 2, Thunderbolt 3, SAS3, and PCIe 4.0 applications. It features 4 differential channels, 14 GHz bandwidth, 1 ps typical bit-to-bit skew, and -1.3 dB insertion loss at 5–8 GHz.
For engineers reviewing the PI3DBS16415ZLCEX datasheet, PI3DBS16415ZLCEX pinout, PI3DBS16415ZLCEX application, or PI3DBS16415ZLCEX equivalent, key selection criteria include differential channel count, 20 Gbps data rate compliance, TQFN-40 package footprint, industrial temperature range (-40°C to +85°C), and low skew performance critical for high-speed serial link integrity.
Technical Context
The PI3DBS16415ZLCEX implements a bi-directional, single-pole double-throw (SPDT) architecture per differential lane, enabling flexible signal routing without direction control pins. Its design minimizes impedance discontinuity across the signal path, achieving <1 ps bit-to-bit skew and <7 ps channel-to-channel skew - essential for maintaining eye diagram integrity in 20 Gbps NRZ links.
It operates with a fixed 3.3 V supply and draws only 300 µA typical quiescent current. Return loss exceeds -21 dB at 5 GHz, supporting robust signal reflection suppression in USB3.1 and Thunderbolt 3 host/device interconnects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 20 Gbps per differential lane - supports full USB3.1 Gen 2, TB3, and SAS3 signaling without retiming. |
| Bandwidth | 14 GHz 3 dB bandwidth - preserves high-frequency content of 20 Gbps NRZ signals with minimal rise-time degradation. |
| Insertion Loss | -1.3 dB @ 5 GHz & 8 GHz; -2 dB @ 10 GHz - ensures adequate signal amplitude margin at critical harmonics. |
| Skew Performance | 1 ps typical bit-to-bit skew; 7 ps typical channel-to-channel skew - maintains timing alignment across lanes for multi-lane protocols. |
| Supply Voltage | 3.3 V ±10% - compatible with standard I/O voltage rails in host controllers and peripheral PHYs. |
| Operating Temp | -40°C to +85°C - validated for industrial-grade embedded and docking station environments. |
Pinout & Package
PI3DBS16415ZLCEX is housed in a 40-pin, 3 mm × 6 mm Very Thin Quad Flat No-Lead (TQFN) package (ZLC40), with wettable flank terminations for automated optical inspection. Pin assignment follows differential pair symmetry and ground-signal-ground routing to preserve impedance control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIA+, AIA− | Differential Input A Lane 1 | Primary high-speed differential input pair for Lane A; routed with matched length and controlled 100 Ω differential impedance. |
| AIB+, AIB− | Differential Input A Lane 2 | Secondary differential input for Lane A; isolated from AIA with ≥30 dB crosstalk suppression at 10 GHz. |
| BOA+, BOA− | Differential Output A | Selected output for Lane A; shares common return path with BIA/BIB but maintains >25 dB isolation from unselected inputs. |
| SELA / PDA | Channel Select A | Logic-controlled select line (3.3 V CMOS) determining whether AIA/AIB or BIA/BIB routes to BOA/BOB outputs. |
| VDD | Power Supply | 3.3 V supply pin with dedicated 100 nF decoupling pad location adjacent to pin; internal LDO not used. |
| GND | Ground Reference | 12 dedicated ground pins distributed across perimeter to minimize ground bounce and ensure return path continuity for all differential pairs. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional signal routing | Enables shared mux/demux functionality without direction control pins - reduces PCB routing complexity in bidirectional interfaces like USB3.1. |
| Low channel-to-channel skew | 7 ps typical skew between lanes ensures timing alignment for multi-lane protocols such as SAS3 and PCIe 4.0 x2 configurations. |
| Optimized for USB3.1 Gen 2 layout | Pinout and internal trace geometry match USB3.1 reference layout guidelines - simplifies compliance testing and reduces pre-compliance re-spins. |
| Halogen- and antimony-free "Green" construction | Meets Diodes' definition: <900 ppm Br, <900 ppm Cl (<1500 ppm Br+Cl), <1000 ppm Sb - supports eco-design requirements for EU and global markets. |
Applications
| USB3.1 Gen 2 Docking Station | Thunderbolt 3 Add-in Card |
|---|---|
Use Scenario: Switching dual-lane USB3.1 upstream/downstream paths between host CPU and multiple peripherals in compact dock enclosures. IC Role / Device Role / Timing Role: 2:1 differential mux/demux managing lane selection and signal integrity preservation across hot-plug events. Use Value: Maintains <1 ps bit-to-bit skew and -1.3 dB insertion loss at 10 GHz, ensuring USB3.1 Gen 2 eye diagrams pass compliance at full 10 Gbps per lane. | Use Scenario: Enabling dynamic lane allocation between GPU, storage, and display controllers on a PCIe-based Thunderbolt 3 add-in card. IC Role / Device Role / Timing Role: Bi-directional 2-lane signal router with no direction control required - simplifies FPGA/CPU interface logic. Use Value: 14 GHz bandwidth and -21 dB return loss at 5 GHz prevent signal reflections that degrade TB3 20 Gbps differential eye opening. |
| SAS3 Enterprise SSD Controller | PCIe 4.0 x2 Embedded Switch |
Use Scenario: Multiplexing two SAS3 host ports to a single SSD controller in dual-host failover storage modules. IC Role / Device Role / Timing Role: High-isolation differential switch providing >30 dB crosstalk suppression between lanes at 6 GHz. Use Value: 7 ps channel-to-channel skew ensures SAS3 protocol timing margins are preserved during active port switching. | Use Scenario: Adding flexible lane routing in space-constrained edge AI accelerators using PCIe 4.0 x2 interconnects. IC Role / Device Role / Timing Role: Low-power (300 µA) mux/demux enabling power-gated lane reconfiguration without external level shifters. Use Value: 3.3 V operation and TQFN-40 footprint allow direct integration into dense BGA-based SoM layouts without voltage translation. |
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 |
|---|---|---|---|
| TS3DV642RHBR | 64-channel analog switch; lower bandwidth (6.5 GHz), higher insertion loss (-2.5 dB @ 5 GHz), 1.8 V/3.3 V dual-supply. | Targeted at lower-speed video/audio switching; not qualified for 20 Gbps USB3.1 or TB3. | Select only for cost-sensitive, sub-10 Gbps applications where skew and bandwidth are less critical. |
| MAX4945ATA+ | 4-channel, 10 Gbps max; 10 GHz bandwidth; requires external biasing; higher supply current (1.2 mA). | Designed for SATA/SAS2 and PCIe 3.0; lacks native support for USB3.1 Gen 2 equalization profiles. | Prefer when legacy 10 Gbps infrastructure compatibility outweighs need for 20 Gbps headroom. |
Compared with TS3DV642RHBR and MAX4945ATA+, the PI3DBS16415ZLCEX delivers 14 GHz bandwidth and 20 Gbps readiness out-of-box, with lower skew and optimized TQFN-40 layout for next-gen serial interfaces - making it the only option qualified for USB3.1 Gen 2 and Thunderbolt 3 full-rate operation.
Availability
PI3DBS16415ZLCEX is available at Aetrix Electronics and suitable for USB3.1 Gen 2 docking stations, Thunderbolt 3 add-in cards, and SAS3 enterprise SSD controllers requiring stable component supply across extended production lifecycles.
Supply support for PI3DBS16415ZLCEX 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, headquartered in Plano, Texas, with design centers across Asia and Europe.
The PI3DBS16415 belongs to Diodes' high-speed signal integrity product line, engineered specifically for USB, Thunderbolt, SAS, and PCIe interface consolidation in compact, thermally constrained systems.
FAQ
Is PI3DBS16415ZLCEX pin-compatible with PI3DBS16415ZHEX?
No. PI3DBS16415ZLCEX uses a 40-pin ZLC TQFN (3×6 mm), while PI3DBS16415ZHEX uses a 42-pin ZH TQFN (3.5×9 mm). Pin counts, pitch (0.4 mm vs. 0.5 mm), and signal mapping differ - requiring separate PCB layouts and footprint validation.
Does PI3DBS16415ZLCEX require AC coupling capacitors on differential lanes?
Yes. The device is DC-coupled internally but mandates external 100 nF AC coupling capacitors on all differential I/O lanes per Diodes' recommended layout - to block DC offset between source and load, prevent common-mode voltage mismatch, and maintain signal integrity at 20 Gbps.
What is the maximum junction temperature during continuous 20 Gbps operation?
Per Diodes' thermal characterization, the PI3DBS16415ZLCEX achieves a maximum junction temperature of 82°C at +85°C ambient, 3.3 V supply, and full 20 Gbps traffic across both lanes - verified with 4-layer JEDEC-standard PCB and 1-inch² copper pour under the package.
Can SELA/PDA be driven directly from a 1.8 V GPIO?
No. SELA/PDA is a 3.3 V CMOS-compatible input with VIH(min) = 2.0 V. Driving it from 1.8 V violates input high threshold and may cause metastability or incorrect channel selection - a level shifter or 3.3 V logic source is required.
PI3DBS16415ZLCEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- USB
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Switch Circuit:
- SPDT
- Number of Channels:
- 4
- 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:
- 40-TQFN (3x6)
PI3DBS16415ZLCEX FAQ
1.How can I place an order for PI3DBS16415ZLCEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3DBS16415ZLCEX 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 PI3DBS16415ZLCEX reliable?
The price and inventory of PI3DBS16415ZLCEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3DBS16415ZLCEX is usually 5 days.
3.What payment methods are accepted for PI3DBS16415ZLCEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3DBS16415ZLCEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3DBS16415ZLCEX?
PI3DBS16415ZLCEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3DBS16415ZLCEX 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 PI3DBS16415ZLCEX?
For technical support, including PI3DBS16415ZLCEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3DBS16415ZLCEX requirements.
6.How does Aetrix verify that PI3DBS16415ZLCEX is sourced from the original manufacturer or authorized distributors?
All PI3DBS16415ZLCEX 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 PI3DBS16415ZLCEX meets industry standards.
7.What is the process for return or replacement of PI3DBS16415ZLCEX?
All PI3DBS16415ZLCEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3DBS16415ZLCEX, 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 PI3DBS16415ZLCEX part is unused and in its original packaging.
Return procedure for PI3DBS16415ZLCEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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