KSZ8081RNBCA-TR Network Controllers by Microchip Technology

10BASE-T/100BASE-TX Physical Layer Transceiver

Status: Active
Series: KSZ8081
RoHS: Compliant
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The KSZ8081 is a single-supply 10Base-T/100Base-TX Ethernet physical-layer transceiver for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable. The KSZ8081 is a highly-integrated PHY solution. It reduces board cost and simplifies board layout by using on-chip termination resistors for the differential pairs and by integrating a low-noise regulator to supply the 1.2V core, and by offering 1.8/2.5/3.3V digital I/O interface support.

The KSZ8081RNx offers the Reduced Media Independent Interface (RMII) for direct connection to RMII-compliant MACs in Ethernet processors and switches. As the power-up default, the KSZ8081RNA uses a 25MHz crystal to generate all required clocks, including the 50MHz RMII reference clock output for the MAC. The KSZ8081RND is the version that takes in the 50MHz RMII reference clock as the power-up default.  

The KSZ8081MLX and KSZ8081MNX offer the Media Independent Interface (MII) for direct connection with MII-compliant Ethernet MAC processors and switches. A 25MHz crystal is used to generate all required clocks.

To facilitate system bring-up and debugging in production testing and in product deployment, parametric NAND tree support enables fault detection between KSZ8081RNA I/Os and the board. Microchip's LinkMD® TDR-based cable diagnostics identify faulty copper cabling.  

The KSZ8081RNA and KSZ8081RND are available in 24-pin, lead-free QFN packages. The KSZ8081MNX and KSZ8081RNB are available in 32-pin, lead-free QFN packages. The KSZ8081MLX is available in 48-pin (7mm x 7mm) LQFP package.

Microchip's complimentary and confidential LANCheck® online design review service is available for customers who have selected our products for their application design-in. The LANCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

Where to Buy

Prices starting from US$0.95

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Features

Single-chip 10Base-T/100Base-TX IEEE 802.3 compliant Ethernet transceiver
MII interface support (KSZ8081MNX)
RMII v1.2 Interface support with a 50MHz reference clock output to MAC, and an option to input a 50MHz reference clock (KSZ8081RNB)
RMII back-to-back mode support for a 100Mbps copper repeater
MDC/MDIO management interface for PHY register configuration
Programmable interrupt output
LED outputs for link and activity status indication
On-chip termination resistors for the differential pairs
Baseline wander correction
HP Auto MDI/MDI-X to reliably detect and correct straight-through and crossover cable connections with disable and enable option
Auto-negotiation to automatically select the highest linkup speed (10/100Mbps) and duplex (half/full)
Power-down and power-saving modes
LinkMD® TDR-based cable diagnostics to identify faulty copper cabling
Parametric NAND Tree support for fault detection between chip I/Os and the board
Loopback modes for diagnostics
Single 3.3V power supply with VDD I/O options for 1.8V, 2.5V, or 3.3V
Available in 24-pin (4mm x 4mm) QFN package, 32-pin (5mm x 5mm) QFN package or 48-pin (7mm x 7mm) LQFP package

Specifications

Pins | Packaging 32 | VQFN
Temp Range 0C to +70C
Packing Media Tape and reel (1000)

Resources




Board Design Files
KSZ8081 IBIS



Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.0614
Shipping Weight (kg) 0.35
Lead Count 32
Package Type VQFN
Package Width or Size 5x5x0.9mm
Soldering Composition Matte Tin

Alternative Descriptions

10/100 BASE-TX Physical Layer Transceiver | Microchip Technology
Single Chip Ethernet PHY Transceiver, 3.135 V to 3.465 V, 32 Pins, QFN-EP | Avnet America
Ic, Trx, Phy 10/100, 32Qfn | Newark Electronics
IC, TRX, PHY 10/100, 32QFN | element14
Ethernet Transceiver,PHY,RMII,QFN32 | RS
10/100 BASE-TX PHYSICAL LAYER TRANSCEIVER | Future Electronics
IC: transceiver | Transfer Multisort Elektronik
Microchip Ethernet Transceiver, RMII, QFN-32 RMII | Distrelec


Frequently Asked Questions

Where can I find additional details, specifications and documents for a KSZ8081RNBCA-TR?

Additional datasheets, footprints and schematics for KSZ8081RNBCA-TR are listed on our Part Details page. You can also find images and similar parts to KSZ8081RNBCA-TR on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for KSZ8081RNBCA-TR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view KSZ8081RNBCA-TR price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does KSZ8081RNBCA-TR fall under?

The KSZ8081RNBCA-TR is listed under Semiconductors - ICs > Network Controllers > Ethernet Controllers.

Can I view similar or alternative parts?

You can view similar parts to KSZ8081RNBCA-TR when available in the Ethernet Controllers range under the specifications section at the bottom of the details page.

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Is the KSZ8081RNBCA-TR RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

Which authorised distributors for KSZ8081RNBCA-TR have stock available?

Authorised distributors including Microchip Technology, Avnet America, Newark Electronics, element14 and Farnell have stock available or on a lead time for KSZ8081RNBCA-TR.

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