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LXT972ALC.A4
LXT972ALC.A4
| Part Number | LXT972ALC.A4 |
|---|---|
| Manufacturer | Inphi (Formerly Cortina Systems, acquired by Marvell) |
| Category | Integrated Circuits (ICs) > Interface > Ethernet Transceivers (PHY) |
| Description | Dual‑Supply 2.5V/3.3V 10/100 Mbps Fast Ethernet PHY Transceiver with MII / RMII / MDIO / JTAG, LQFP‑64 Package. |
| Stock Status | In Stock (EOL original surplus stock) |
| Origin | Original Factory |
Product Overview
LXT972ALC.A4 is an IEEE 802.3‑compliant 10/100 Mbps Fast Ethernet PHY from Inphi (Cortina/Marvell). Dual‑supply 2.5V/3.3V, it supports MII/RMII, MDIO & JTAG debug interfaces for copper 10/100BASE‑T‑TX and 100BASE‑FX fiber links. Equipped with baseline wander correction and auto‑negotiation, it serves legacy‑device repair and embedded network hardware.
Core Advantages
Dual MII / RMII MAC Interfaces
Supports standard MII and pin‑saving RMII, compatible with MCUs, FPGAs and various MAC controllers for simplified PCB routing.
Copper + Fiber Dual‑Media Support
Works for 10/100BASE‑TX twisted‑pair and 100BASE‑FX fiber, ideal for long‑distance and high‑noise industrial network scenarios.
Signal Integrity Optimization
Built‑in baseline wander correction stabilizes signal quality, ensuring low BER over long‑cable continuous transmission.
Dual‑Power & Complete Debug Functions
2.5V/3.3V dual‑supply design; MDIO register configuration plus JTAG boundary‑scan for hardware debugging, with multiple low‑power sleep modes.
Key Specifications
| Brand | Inphi / Cortina Systems |
|---|---|
| RoHS Status | RoHS Compliant / Green (Lead‑Free) |
| EDA / CAD | PCB Footprint & 3D Model Available upon Request |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | LQFP‑64 (10×10 mm, 0.5mm pitch) |
| Mounting Type | Surface Mount (SMT) |
| Surface Marking / Silkscreen | LXT972ALC A4,Marking |
| Data Rate | 10/100 Mbps (10BASE‑T / 100BASE‑TX / 100BASE‑FX) |
| MAC Interface | MII (Media Independent Interface) / RMII |
| Management Interface | MDIO Serial Configuration + JTAG Boundary‑Scan |
| Networking Standards | IEEE 802.3, IEEE 802.3u, ANSI X3T12 TP‑PMD |
| Duplex Mode | Full‑Duplex / Half‑Duplex Auto‑Negotiation |
| Supply Voltage | 2.5 V (±5%) / 3.3 V (±5%) Dual‑Supply |
| Typical Power Consumption | Approx 300mW (including sleep mode) |
| Operating Temperature Range | 0°C to +70°C (Commercial Grade) |
| Lifecycle Status | EOL / Discontinued by Original Manufacturer |
Typical Applications
- Industrial Automation controllers, PLCs, and Human‑Machine Interfaces (HMI)
- SOHO Routers, Ethernet Switches, Broadband Access Gateways, and Bridges
- Embedded single‑board computers (SBC) and IoT gateway network interfaces
- IP Surveillance Cameras, Video Servers, and Security Systems
- Legacy telecom equipment, network print servers, and network test instrumentation
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1‑2 business days |
| Delivery Time | 3‑7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What is LXT972ALC.A4 used for?
A: It is a 10/100Mbps Fast‑Ethernet PHY transceiver, for legacy network‑equipment repair and embedded networking hardware.
Q2: What interfaces does LXT972ALC.A4 support?
A: MAC: MII / RMII; management: MDIO + JTAG boundary‑scan; physical: 10/100BASE‑T‑TX copper and 100BASE‑FX fiber.
Q3: What power supplies are required?
A: Dual‑supply 2.5V (±5%) and 3.3V (±5%). Both rails must be powered for full‑function operation.
Q4: What does suffix .A4 mean?
A: .A4 is silicon revision. Pinout remains identical; minor register differences exist. Validate system if mixing revisions.
Q5: Is LXT972ALC.A4 EOL discontinued?
A: Yes, original manufacturer discontinued this part. Our stock is original surplus, for maintenance replacement, not for new mass‑production.
Q6: Are there pin‑to‑pin drop‑in replacements?
A: No direct pin‑compatible alternative. Any alternative PHY requires PCB and firmware modification.
Q7: What functional alternatives for new design?
A: Microchip LAN8720, TI DP83848. 10/100Mbps with MII/RMII, different pinout/package. For redesign only, cannot swap on old boards.
Q8: Can it run in industrial high‑temperature environments?
A: No, commercial‑grade 0‑70°C. Choose industrial‑temperature PHY for ‑40~85°C applications.
Q9: Are other package / temperature variants available in LXT972 family?
A: LXT972ALC.A4 is only LQFP‑64 commercial‑temperature version. Other family parts cannot substitute without full verification.
Q10: How to get datasheet, footprint or bulk quotation?
A: Please submit the inquiry form for datasheets, CAD files, stock check and volume pricing.
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