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Diodes Incorporated PI3L720ZHEX-1507
- Part No.:
- PI3L720ZHEX-1507
- Manufacturer:
- Diodes Incorporated
- Category:
- Analog Switches - Special Purpose
- Package:
- 42-VFQFN Exposed Pad
- Datasheet:
-
PI3L720ZHEX-1507.pdf
- Description:
- IC 2:1 MUX/DEMUX 42TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,905
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Product details
Overview
PI3L720ZHEX-1507 from Diodes Incorporated is a 8-channel, 2:1 bidirectional Gigabit Ethernet LAN switch IC with Hi-Z outputs, designed for differential signal routing between a single PHY and dual RJ-45 ports. It delivers <250ps propagation delay, 650MHz bandwidth, <200ps bit-to-bit skew, –75dB crosstalk at 250MHz, and supports 10/100/1000BASE-T over CAT5/CAT6 UTP via isolation transformers.
For engineers reviewing the PI3L720ZHEX-1507 datasheet, PI3L720ZHEX-1507 pinout, PI3L720ZHEX-1507 application, or PI3L720ZHEX-1507 equivalent, key selection criteria include its low on-resistance (4.0Ω typ), power-down mode (0.25mA IDD-PD), LED indicator switching capability, TQFN-42 package compatibility, and ESD robustness (8kV contact).
Technical Context
The PI3L720ZHEX-1507 implements an analog multiplexer/demultiplexer architecture optimized for high-speed differential Ethernet signaling, with independent control of A→B or A→C path selection via SEL and global enable/disable via PD. Its rail-to-rail logic inputs tolerate up to +3.6V regardless of VDD (3.0–3.6V), enabling direct interfacing with 3.3V or 5V controllers.
It features integrated status LED drivers (LEDAX/LED BX/LEDCX) synchronized to data pair switching, and achieves >650MHz bandwidth through ultra-low channel resistance (RON = 4.0Ω typ) and minimal I/O capacitance (CIN = 3.0pF typ, CON(A/B) = 11.0pF max). The device operates across –40°C to +85°C with guaranteed performance for both 1000BASE-T and 10/100BASE-T modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 650 MHz (–3 dB), sufficient for full 1000BASE-T spectral content without attenuation |
| Propagation Delay | 0.25 ns typ, minimizing timing budget impact in high-speed PHY-to-port paths |
| Bit-to-Bit Skew | 200 ps max, preserving differential signal integrity across all 8 channels |
| On-Resistance | 4.0 Ω typ, reducing insertion loss and voltage drop in 100Ω differential lines |
| Crosstalk | –75 dB @ 250 MHz, preventing interference between active and inactive Ethernet pairs |
| ESD Protection | 8 kV contact (IEC 61000-4-2), enabling robust handling during board assembly and field service |
| Power-Down Current | 0.25 mA max, enabling battery-aware operation in mobile docking stations |
Pinout & Package
The PI3L720ZHEX-1507 is housed in a 42-contact Very Thin Quad Flat No-Lead (TQFN) package measuring 3.5 mm × 9.0 mm with 0.5 mm pitch and exposed thermal pad (ZH code).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0+ / A0– to A3+ / A3– | Differential Input Ports (PHY side) | Accepts 100Ω differential signals from single Gigabit Ethernet PHY transceiver |
| B0+ / B0– to B3+ / B3– | Differential Output Port 1 (RJ-45 #1) | Drives first isolated Ethernet connector with matched impedance and low skew |
| C0+ / C0– to C3+ / C3– | Differential Output Port 2 (RJ-45 #2) | Drives second isolated Ethernet connector; mutually exclusive with B-side under SEL control |
| SEL | Port Selection Control | Logic-high selects A→C path; logic-low selects A→B path; no internal pull-up/down |
| PD | Power-Down Enable | Active-high input with internal pull-down; places all switches and LEDs in Hi-Z standby state |
| LEDA0–LEDA2, LEDB0–LEDB2, LEDC0–LEDC2 | LED Driver Outputs | Switch synchronously with corresponding A/B/C differential pairs to indicate active link status |
| VDD (×6 pins) | Supply Voltage | 3.0–3.6V core supply; multiple pins reduce IR drop and improve PSRR |
| GND | Ground Reference | Single ground pad; requires low-inductance connection to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Hi-Z Output State | Enables true signal isolation when disabled-no leakage current or capacitive loading on B/C ports |
| Integrated LED Drivers | Eliminates external driver circuitry by switching status LEDs in lockstep with Ethernet pair routing |
| Rail-to-Rail Logic Inputs | Accepts 0–3.6V control signals independent of VDD, simplifying interface with mixed-voltage SoCs |
| Low On-Resistance Flatness | 0.5 Ω max RFLAT(ON), ensuring uniform insertion loss across all 8 channels and maintaining signal balance |
| Thermal Performance | TQFN-42 package with exposed pad enables ≤45°C/W θJA in standard 2-layer PCB layout |
Applications
| Laptop Docking Station | Industrial Ethernet Gateway |
|---|---|
Use Scenario: A laptop connects to a dock with two independent Gigabit Ethernet ports sharing one internal PHY. IC Role / Device Role / Timing Role: 2:1 LAN switch routes differential signals from single PHY to either port based on physical cable detection or software command. Use Value: Eliminates need for dual-PHY silicon and reduces BOM cost while maintaining full 1000BASE-T throughput on either active port. | Use Scenario: An industrial gateway aggregates traffic from two field devices (e.g., PLC and HMI) onto one upstream network interface. IC Role / Device Role / Timing Role: Provides hardware-level failover routing: if primary Ethernet link fails, SEL toggles to activate backup port within microseconds. Use Value: Achieves sub-10µs switchover time without firmware intervention, meeting deterministic industrial communication requirements. |
| Network Test Equipment | Embedded Network Appliance |
Use Scenario: A portable network analyzer must inject test patterns into either of two live Ethernet links without disrupting traffic. IC Role / Device Role / Timing Role: Acts as non-intrusive signal selector-PHY output is mirrored to selected port while other remains electrically isolated (Hi-Z). Use Value: Prevents signal reflection and crosstalk during testing due to <200ps skew and –75dB isolation at 250MHz. | Use Scenario: A compact firewall appliance uses one SoC Ethernet MAC but must support dual WAN/LAN interfaces. IC Role / Device Role / Timing Role: Enables dynamic port assignment: SEL driven by Linux GPIO to assign MAC to either physical port based on configuration. Use Value: Reduces PCB layer count and eliminates external magnetics duplication, cutting system size by ~35% vs dual-MAC design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Gigabit Ethernet 2:1 switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3USB30E | 4-channel, USB 2.0 switch; lacks LED drivers, lower bandwidth (500MHz), no PD pin | Not rated for 1000BASE-T; unsuitable for full Gigabit Ethernet routing | Select only for USB signal switching where Ethernet compliance is not required |
| MAX4899E | 8-channel, 2:1 switch with 600MHz bandwidth, no integrated LED drivers, higher RON (6.5Ω typ) | Requires external LED control logic; exhibits higher insertion loss in 100Ω lines | Prefer when LED integration is unnecessary and existing design already accommodates discrete drivers |
Compared with TS3USB30E and MAX4899E, the PI3L720ZHEX-1507 uniquely combines 650MHz bandwidth, integrated LED switching, power-down mode, and <200ps skew-making it the only option qualified for seamless 1000BASE-T dual-port routing in space-constrained docking and embedded systems.
Availability
PI3L720ZHEX-1507 is available at Aetrix Electronics and suitable for laptop docking stations, industrial Ethernet gateways, and embedded network appliances requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for PI3L720ZHEX-1507 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 protection solutions for computing, industrial, and communications markets.
The PI3L720 belongs to Diodes' high-speed analog switch product line, engineered specifically for noise-immune, low-latency routing of differential Ethernet signals in compact, power-sensitive systems.
FAQ
What is the maximum operating temperature range for the PI3L720ZHEX-1507?
The PI3L720ZHEX-1507 is specified for continuous operation from –40°C to +85°C ambient temperature. This range is validated across all electrical parameters including RON, bandwidth, and skew, and applies to both 10/100BASE-T and 1000BASE-T modes per the official Diodes datasheet revision 17-0005.
Does the PI3L720ZHEX-1507 require external pull-up or pull-down resistors on SEL or PD pins?
No. The PD pin has an internal pull-down resistor; SEL has no internal termination and must be actively driven high or low by the host controller. Neither pin requires external biasing, though a 10kΩ pull-down on SEL is recommended for deterministic startup if left uncontrolled during boot.
Can the PI3L720ZHEX-1507 be used with 2.5V or 5V logic control signals?
Yes. Its logic inputs are rail-to-rail compatible and accept voltages from –0.5V to +3.6V regardless of VDD (3.0–3.6V). Driving SEL or PD with 2.5V or 5V signals is permissible only if clamped to ≤3.6V using external diodes or level shifters-direct 5V connection violates absolute maximum ratings.
How does the PI3L720ZHEX-1507 handle signal integrity during switching transitions?
It maintains signal integrity via simultaneous break-before-make switching: all paths enter Hi-Z before new path activates. Measured tSK(o) ≤200ps and tON/OFF ≤200ns ensure minimal glitch generation. The 0.25ns propagation delay and 650MHz bandwidth preserve rise/fall times of 1000BASE-T signals without measurable distortion.
PI3L720ZHEX-1507 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 42-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Telecommunications
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Switch Circuit:
- -
- Number of Channels:
- 8
- On-State Resistance (Max):
- 6.5Ohm
- Voltage - Supply, Single (V+):
- 3V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- -3db Bandwidth:
- 650MHz
- Features:
- 10/100/1000 Base-T
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 42-TQFN (9x3.5)
PI3L720ZHEX-1507 FAQ
1.How can I place an order for PI3L720ZHEX-1507 through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3L720ZHEX-1507 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 PI3L720ZHEX-1507 reliable?
The price and inventory of PI3L720ZHEX-1507 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3L720ZHEX-1507 is usually 5 days.
3.What payment methods are accepted for PI3L720ZHEX-1507?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3L720ZHEX-1507 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3L720ZHEX-1507?
PI3L720ZHEX-1507 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3L720ZHEX-1507 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 PI3L720ZHEX-1507?
For technical support, including PI3L720ZHEX-1507 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3L720ZHEX-1507 requirements.
6.How does Aetrix verify that PI3L720ZHEX-1507 is sourced from the original manufacturer or authorized distributors?
All PI3L720ZHEX-1507 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 PI3L720ZHEX-1507 meets industry standards.
7.What is the process for return or replacement of PI3L720ZHEX-1507?
All PI3L720ZHEX-1507 units undergo pre-shipment inspection (PSI). If there is an issue with PI3L720ZHEX-1507, 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 PI3L720ZHEX-1507 part is unused and in its original packaging.
Return procedure for PI3L720ZHEX-1507:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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