Microchip Technology KSZ8041TLA3TR

Mfr. Part

KSZ8041TLA3TR

Manufacturer

Micrel / Microchip Technology. Y-IC is a quality distributor of Microchip brands. We deliver genuine parts, fast service, and expert support to ensure you get the best products and solutions.

Detailed Description

Single-port 10/100 Ethernet PHY transceiver in a 48-TQFP (7x7 mm) package. MII and RMII MAC interfaces. 3.3 V supply (3.135 V to 3.465 V). Surface-mount, RoHS3 compliant. Supplied in Tape & Reel for automated assembly. Base product family: KSZ8041. Quantity available: 2513 units.

Key Features

10BASE-T and 100BASE-TX IEEE 802.3 compliant PHY

MII and RMII interface options to connect to your MAC/MCU

Single-port design (1 transmitter / 1 receiver)

Auto-negotiation for speed and duplex

Full-duplex and half-duplex support

Link, activity, and speed indication (LED pin outputs, per series capability)

Loopback and test modes for debug

25 MHz crystal or oscillator input (typical for RMII/MII PHYs)

Reset, strap pins for PHY address and interface mode selection

Low-power modes; RoHS3 lead-free

Key Advantages

Proven KSZ8041 family for stable 10/100 Ethernet links

Flexible MAC connectivity (MII or RMII) simplifies design reuse

3.3 V-only operation reduces power subsystem complexity

Compact 48-TQFP footprint eases routing on dense boards

Broad ecosystem support and industry-standard registers

Tape & Reel packaging streamlines SMT production

Backed by Y-IC’s reliable sourcing and technical support

Packaging

Type: 48-TQFP (Thin Quad Flat Package), surface-mount

Material: Epoxy-molded plastic with copper leadframe; matte-tin lead finish (lead-free)

Size: 7 mm x 7 mm body; low-profile height

Pin count and pitch: 48 leads; typical TQFP pitch ~0.5 mm

Pin groups (typical PHY): MII/RMII digital I/O (TXD, RXD, TX_EN, RX_DV, CRS, COL), management interface (MDC, MDIO), clock pins (REF_CLK/XTAL1/XTAL2), reset, strap pins (PHY address, mode), LED outputs, analog Ethernet pairs to magnetics/RJ-45, multiple VDD (3.3 V) and GND pins

Thermal characteristics: TQFP thermal path via leads; use solid ground planes and adequate copper for heat spreading; follow datasheet θJA/θJC guidance for layout

Electrical properties: Supply 3.135 V to 3.465 V; designed for low-power 10/100 operation; supports power-down/energy modes; standard Ethernet line driver/receiver levels through magnetics

Lifecycle

Current status: KSZ8041 family is mature. Availability can vary by specific suffix (TLA3TR). Not currently flagged as end-of-life in general product awareness, but newer low-power PHY families exist.

Recommended alternatives and equivalents (designor pin-compatible varies; verify against your requirements):

- Microchip KSZ8081MNX (low-power 10/100 PHY, RMII/MII)

- Microchip KSZ8081RNA (RMII-focused, low power)

- Microchip LAN8720A (compact RMII PHY)

- Texas Instruments DP83848, DP83822 series (10/100 PHY)

- Realtek RTL8201 series (10/100 PHY)

Need confirmation for exact equivalency, temperature grade, and pin compatibility? Contact Y-IC sales via our website for the latest lifecycle and cross-reference guidance.

Key Application Areas

Industrial controllers, PLCs, HMI panels

IoT gateways and embedded Ethernet MCU systems

Networked sensors and edge devices

Printers, POS terminals, and office equipment

Residential and commercial building automation

Consumer and SMB routers/switches (MAC-to-PHY link)

Energy meters and data loggers with Ethernet backhaul

Education and development boards using 10/100 Ethernet

Datasheet

Y-IC hosts the most authoritative datasheet and technical resources for KSZ8041TLA3TR on our product page. Download the datasheet here to get complete pinouts, register maps, timing, layout guidelines, and thermal data. We strongly recommend downloading it now for accurate design details.

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