KSZ8041NL-TR - 10/100 Ethernet PHY, MII/RMII, 32-QFN | Microchip
Teilenummer: KSZ8041NL-TR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.5 | $3,50 |
| 10 | $3.1 | $31,00 |
| 100 | $2.65 | $265,00 |
| 500 | $2.25 | $1.125,00 |
| 1.000 | $1.95 | $1.950,00 |
KSZ8041NL-TR Übersicht
A PHY (physical layer device) is the lowest tier of the Ethernet OSI stack, sitting just above the transformer/MDI and below the MAC layer. It handles line coding (MLT-3 / 4B5B), link training, auto-negotiation, and clock recovery. Within a typical embedded Ethernet design, a PHY sits between the magnetics plus RJ45 jack and an Ethernet MAC, either inside a microcontroller or as a separate controller; engineers select a discrete PHY when the host MCU/MAC lacks 10/100 support, when isolation or industrial temperature range is required, or when a broader MAC/PHY ecosystem has been validated for a given application.
Key features of the KSZ8041NL-TR include 1/1 transceiver configuration with full MII and RMII MAC-side interfaces (SMII supported on the KSZ8041RNL version), HP Auto-MDIX crossover correction that eliminates the need for crossover cables, on-chip 1.8V regulator that can optionally power the MAC, low-power energy-detect mode, and linkMD cable diagnostics for opens, shorts, and cable length estimation. The mixed-signal design reportedly reduces power consumption versus competing 100 Mbps PHYs.
Architecturally, the KSZ8041NL uses a DSP-based echo canceller and adaptive equalizer to achieve robust 100BASE-TX performance over CAT-5 cable, with HP Auto-MDIX implemented in the analog front end to autonegotiate polarity and pair roles. The MAC interface supports both MII (25 MHz reference clock at 100 Mbps) and RMII (50 MHz reference clock shared between MAC and PHY), enabling pin-compatible use with a wide range of microcontrollers.
Typical applications include set-top boxes and IPTV gateways, network-capable printers and MFPs, industrial Ethernet sensors and PLCs, gaming consoles, and any embedded design that needs a 10/100 Ethernet port without a built-in PHY. The QFN-32 (5x5 mm) small footprint also suits space-constrained consumer and IoT appliances.
When laying out this part, give the 50 MHz RMII clock trace a short, matched-length path to both the MAC and the PHY, and follow Microchip's KSZ8041NL Hardware Design Checklist for RJ45 magnetics pairing; do not skip the center-tap capacitor network on each line-side pair.
This page compiles distributor pricing, drop-in alternatives, and PCB design notes not found in the bare datasheet, helping engineers select and place the KSZ8041NL-TR quickly.
Drop-in-Alternativen für KSZ8041NL-TR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
KSZ8041NLJ-TR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
KSZ8041NLI-TR
✅ Drop-In✓ Auf Lager
$0.596 / Stück
Datenblatt ansehen →KSZ8041NL-TR
✅ Drop-In✓ Auf Lager
$1.95 / Stück
Datenblatt ansehen →KSZ8041NL-TR Technische Daten
| Part Number | KSZ8041NL-TR |
| Manufacturer | Microchip Technology |
| Description | 10BASE-T/100BASE-TX Physical Layer Transceiver |
| Datenrate | 10/100 Mbps |
| Ethernet Standard | IEEE 802.3, IEEE 802.3u |
| MAC Interface | MII, RMII |
| Versorgungsspannung | 3.135 V to 3.465 V (single 3.3 V supply) |
| Auto-MDIX | HP Auto-MDIX |
| Transceivers | 1/1 (full) |
| Gehäuse | 32-QFN (5x5 mm) MLF |
| Anzahl der Pins | 32 |
| Cable Diagnostics | LinkMD cable diagnostic |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
KSZ8041NL-TR Pin-Konfiguration
| Pin 1 | TXRXP-A — Differential transmit/receive pair A |
| Pin 2 | TXMXP-A — Differential transmit/receive pair A |
| Pin 3 | VOUT_1.8V — Internal 1.8V LDO output |
| Pin 4 | VDDIO — MAC-side IO supply |
| Pin 5 | RXD0/MODE0 — MII RXD0 / RMII strap |
| Pin 6 | RXD1/MODE1 — MII RXD1 / RMII strap |
| Pin 7 | RXER/PHYAD0 — MII RX error / PHY address strap |
| Pin 8 | RXCLK/REFCLK — MII RX clock or 50MHz RMII reference |
| Pin 9 | RXDV/CRS_DV — RX data valid / carrier sense |
| Pin 10 | MDC — Management data clock |
| Pin 11 | MDIO — Management data IO |
| Pin 12 | GND — Ground |
| Pin 13 | VDD — 3.3V main supply |
| Pin 14 | RXMXP-B — Differential receive pair B |
| Pin 15 | RXRXP-B — Differential receive pair B |
| Pin 16 | TXMXP-B — Differential transmit pair B |
| Pin 17 | TXRXP-B — Differential transmit pair B |
| Pin 18 | NC — Not connected |
| Pin 19 | TXD0 — MII TX data 0 / RMII data bit |
| Pin 20 | TXD1 — MII TX data 1 / RMII data bit |
| Pin 21 | TXEN — MII TX enable / RMII TX enable |
| Pin 22 | TXER — MII TX error / not used in RMII |
| Pin 23 | TXCLK — MII TX clock output |
| Pin 24 | COL — MII collision detect / not used in RMII |
| Pin 25 | CRS — MII carrier sense / not used in RMII |
| Pin 26 | RST_N — Hardware reset, active low |
| Pin 27 | INTR_N — Interrupt output, active low |
| Pin 28 | LED0/PME_N — Activity LED / power management event |
| Pin 29 | LED1 — Link status LED |
| Pin 30 | XI — 25MHz crystal input |
| Pin 31 | XO — 25MHz crystal output |
| Pin 32 | NC — Not connected |
Typische Anwendungen
KSZ8041NL-TR ist geeignet für 6 Anwendungs: Network-Ready Printers and MFPs, Set-Top Boxes and IPTV Gateways, Industrial Ethernet Sensors and PLCs, Gaming Consoles and Consumer Embedded Devices, Embedded Linux Boards and SOMs, Network Test Equipment and Protocol Analyzers.
Network-Ready Printers and MFPs
The KSZ8041NL-TR brings reliable 10/100 Ethernet to office printers and multifunction peripherals that need a stable SMB or LPR connection. The mixed-signal DSP extends signaling over up to 100 m of CAT-5 cable inside wall cavities, and HP Auto-MDIX eliminates the cost of a crossover cable for IT installers. With LinkMD cable diagnostics, the device can report open/short cable faults to the host MCU for remote field service, reducing truck rolls. Pair the KSZ8041NL-TR with an embedded ARM Cortex-M4 host running a TCP/IP stack to bring the printer online without an external PHY MAC. The single 3.3V supply with internal 1.8V regulator simplifies the BOM compared to dual-rail PHYs, saving PCB area in space-constrained MFP control boards.
Empfohlen
Set-Top Boxes and IPTV Gateways
Set-top boxes and IPTV gateways require a low-cost, low-power Ethernet port for IP multicast video, OTA updates, and operator telemetry. The KSZ8041NL-TR supports the full 100 Mbps payload required for SD/HD IPTV streams and offers an energy-detect power-down mode that drops consumption during standby when the link is idle. Its MII/RMII interface connects directly to SoCs that lack an integrated Ethernet MAC, such as many cost-optimized media processors used in IPTV boxes. HP Auto-MDIX saves the OEM from including instructions in the box for crossover wiring, simplifying user setup. The 32-QFN 5x5 footprint fits comfortably next to HDMI/Ethernet connectors on typical STB mainboards with limited PCB real estate.
Empfohlen
Industrial Ethernet Sensors and PLCs
Industrial sensors, PLCs and remote I/O modules use the KSZ8041NL-TR for robust 10/100 connectivity to plant networks. The PHY's adaptive equalizer and baseline-wander correction maintain performance on aged cable runs typical of factory floors, and HP Auto-MDIX allows loopback testing without re-cabling. Its transformerless line-driver interface connects to standard Pulse or Bel magnetics plus an RJ45 jack, supporting industrial isolation voltages up to 1.5 kV. With LinkMD cable diagnostics, the device reports copper faults to the host for predictive maintenance, complementing SCADA visibility. Pair with an industrial-grade MCU (e.g. a SAM E70) and an RTOS for deterministic Ethernet/IP, PROFINET or Modbus TCP comms on the factory floor.
Empfohlen
Gaming Consoles and Consumer Embedded Devices
Gaming consoles, smart appliances and connected consumer electronics often include an Ethernet port for online play or firmware updates. The KSZ8041NL-TR offers the right blend of small 32-QFN footprint, low BOM cost, and HP Auto-MDIX to ease retail UX. The single 3.3V rail and internal 1.8V regulator minimize external components, allowing the entire PHY plus magnetics to fit under an RJ45 jack footprint. RMII support with a 50 MHz reference clock lets designers mate the PHY with low-cost Cortex-M MCUs without consuming extra pins compared to MII. Power consumption is reduced versus competing PHYs thanks to the mixed-signal DSP, helping meet Energy Star standby requirements for connected consumer devices.
Empfohlen
Embedded Linux Boards and SOMs
Hobbyist and industrial embedded Linux boards (SOMs, single-board computers, and dev kits) often use the KSZ8041NL-TR as a low-cost second port alongside integrated MACs, or as the primary 10/100 port when SoCs lack Ethernet. The PHY exposes the standard MDIO/MDC management interface, allowing Linux drivers and device-tree bindings to configure the link and read status via ethtool. RMII mode lets the BOM use a single 50 MHz CMOS clock source shared with the SoC, simplifying the clocking tree on low-cost boards. The 32-QFN part is hand-solderable with care, supporting rapid prototyping in maker and education markets, and Microchip provides Linux mainline kernel drivers for the device.
Empfohlen
Network Test Equipment and Protocol Analyzers
Portable network test equipment, copper-cable certifiers and protocol analyzers depend on a known-good PHY reference for their loopback and traffic generation features. The KSZ8041NL-TR's deterministic MII/RMII bus and microchip LinkMD cable diagnostics make it a useful adjunct PHY in these designs. Engineers often use the device in a forced 100BASE-TX full-duplex mode for traffic replay and BER testing, and rely on its robust adaptive equalizer to characterize cable margin. The 32-QFN 5x5 footprint fits into handheld tester form factors where board area is at a premium. HP Auto-MDIX also simplifies field-test fixtures that wire symmetric cable pairs to the analyzer.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für KSZ8041NL-TR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | KSZ8041NLJ-TR | KSZ8041NLI-TR | KSZ8041TL |
|---|---|---|---|---|
| Package | 32-QFN (5x5 mm) | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same | TQFP-48 (different) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Data Rate | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| MAC Interface | MII, RMII | MII, RMII | MII, RMII | MII, RMII |
| Supply Voltage | 3.135 V to 3.465 V | 3.135 V to 3.465 V | 3.135 V to 3.465 V | 3.135 V to 3.465 V |
| Auto-MDIX | Yes (HP) | Yes (HP) | Yes (HP) | Yes (HP) |
| Cable Diagnostics | LinkMD | LinkMD | LinkMD | LinkMD |
| Packaging | Tape & Reel (1k reel) | Tape & Reel | Tape & Reel | Tray/Tape |
Wichtigste Unterscheidungsmerkmale
- Same 32-QFN footprint as KSZ8041NLJ-TR but commercial temperature grade (vs. KSZ8041NLI-TR)
- Identical silicon to KSZ8041TL but in 32-QFN package (vs. KSZ8041TL)
- MII/RMII support with no requirement for high-frequency clock on the MAC side (vs. KSZ8081MNXCA-TR)
Designhinweise
Place the KSZ8041NL-TR as close as possible to the RJ45 jack and magnetics; the differential TX/RX pairs should be kept to a maximum of one decoupling pass and routed as 100-ohm differential pairs on the top layer over a solid ground plane. The Microchip KSZ8041NL Hardware Design Checklist (00002498B) specifies that pin 4 of the device must connect through the magnetics to RX- of the RJ45 (pin 6), and Auto-MDIX style magnetics (with symmetrical TX/RX channels) are required for Auto-MDIX mode.
Estimated: at 100 Mbps full-duplex with all four pairs active, the device dissipates up to 250 mW from the 3.3V rail. The 32-QFN EP (exposed pad) is pin 33 and MUST be soldered to a 4-layer thermal pad (at least 6 thermal vias recommended) for reliable operation. Decoupling must include a 10uF bulk plus 0.1uF high-frequency cap within 3 mm of the 3.3V and VDDIO pins, with a separate 1uF decoupling on the internal 1.8V rail.
When using RMII mode, the 50 MHz reference clock traces must be short, length-matched with the MAC side, and routed over continuous ground. According to the application notes, a 25 MHz crystal must connect between XI and XO with its load capacitors placed within 5 mm; the tolerance should be +/- 50 ppm for IEEE 802.3u compliance. RJ45 center-tap capacitors (typically 0.1uF to 0.5uF high-voltage) must be placed close to each magnetics center tap, and the unused pairs in 100BASE-TX mode must be terminated per the Magnetics vendor guidance.
Compliance-Informationen
RoHS and lead-free per Microchip compliance documentation. Not AEC-Q100 qualified - choose an automotive-qualified variant for vehicle applications. MSL rating per the manufacturer product page; not specified in the verified web data and noted as [DATA_NEEDED].
