ENC28J60-I/SS Microchip Integrated Circuit (Small Outline Packages) In Stock

Name: ENC28J60-I/SS
Brand: Microchip
SKU: ENC28J60-I/SS
Availability: InStock

ENC28J60-I/SS is a Microchip stand-alone Ethernet controller with an SPI interface in a 28-pin SSOP package. It integrates a 10BASE-T MAC and PHY, 8 KB receive/transmit buffer, and supports up to 20 MHz SPI clock for easy connectivity on microcontroller-based designs. Available from stock with worldwide shipping.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

ENC28J60-I/SSSmall Outline Packages

Quick Facts

Manufacturer: Microchip
Package: Small Outline Packages
Pin Count: 28
Lifecycle: ACTIVE
Datasheet: ENC28J60-I/SS Datasheet PDF
Category: Integrated Circuit
Price: From $3.4000(MOQ 1)
Temp Range: -40.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of ENC28J60-I/SS?

Integrated 10BASE-T MAC and PHY with 8 KB dual-port SRAM Ethernet frame buffer
SPI interface up to 20 MHz with 1.25 Mbps maximum data transfer rate for easy MCU integration
28-pin SSOP package with on-chip voltage regulators reducing external component count
Full and half-duplex operation with flow control and Wake-on-LAN support for low-power IoT designs

What is ENC28J60-I/SS used for?

ENC28J60-I/SS enables 10BASE-T Ethernet connectivity on resource-constrained microcontrollers such as AVR, PIC, and ARM Cortex-M devices that lack on-chip Ethernet MAC. It is widely used in embedded web servers, industrial sensor gateways, and home automation hubs where a simple SPI bus connection replaces a dedicated Ethernet MCU variant. The 8 KB on-chip buffer and integrated PHY reduce BOM cost in low-volume IoT and prototyping designs.

What are the specifications of ENC28J60-I/SS?

Manufacturer Package Code	SSOP-28
Factory Lead Time	5Weeks
YTEOL	8
Boundary Scan	NO
Bus Compatibility	SPI
Clock Frequency-Max	25MHz
Communication Protocol	SYNC, BYTE
Data Transfer Rate-Max	1.25MBps
JESD-30 Code	R-PDSO-G28
JESD-609 Code	e3
Low Power Mode	YES
Number of Serial I/Os	1
On Chip Data RAM Width	8
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SSOP28,.3
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
RAM (words)	8192
Screening Level	TS 16949
Supply Current-Max	180mA
Supply Voltage-Max	3.6V
Supply Voltage-Min	3.1V
Supply Voltage-Nom	3.3V
Surface Mount	YES
Technology	CMOS
Temperature Grade	INDUSTRIAL
Terminal Finish	Matte Tin (Sn)
Terminal Form	GULL WING
Terminal Pitch	0.65mm
Terminal Position	DUAL
uPs/uCs/Peripheral ICs Type	SERIAL IO/COMMUNICATION CONTROLLER, LAN
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.01
Country of Origin	Thailand

Where can I find the ENC28J60-I/SS datasheet?

ENC28J60-I/SS Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for ENC28J60-I/SS?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What SPI clock speed does ENC28J60-I/SS support and how does that constrain packet throughput?

ENC28J60-I/SS supports SPI clock frequencies up to 20 MHz, yielding a maximum data transfer rate of 1.25 Mbps from MCU to Ethernet buffer. Since 10BASE-T operates at 10 Mbps on the wire, the SPI bus is the bandwidth bottleneck for back-to-back packet bursts, though it is sufficient for typical embedded web server, MQTT, and sensor reporting workloads at modest packet rates.

How much receive and transmit buffer does ENC28J60-I/SS provide, and does it support multiple receive filters?

ENC28J60-I/SS integrates 8 KB of dual-port SRAM shared between receive and transmit frames, with software-configurable buffer pointers. It includes programmable receive filters for unicast, multicast, broadcast, and pattern-match filtering, allowing the host MCU to discard unwanted frames in hardware before they consume buffer space.

When should a designer choose ENC28J60-I/SS over a microcontroller with built-in Ethernet MAC such as STM32F407?

ENC28J60-I/SS is the cost-effective choice when the host MCU is already committed, adding 10BASE-T connectivity via a 4-wire SPI bus at roughly one-tenth the MCU cost difference versus upgrading to an Ethernet-capable MCU. For designs where TCP/IP stack memory is managed externally and bandwidth needs are below 1 Mbps average throughput, the 28-pin SSOP-28 device minimizes BOM complexity compared to switching MCU families.

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AvailabilityIn Stock

Reference Price (USD)

From $3.4000

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$3.8270	$3.83
13+	$3.5870	$46.63
282+	$3.4000	$958.80

pcs

Unit price: $3.8270 · Total: $3.83

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”

James Wright

Supply Chain Director, CircuitPro Ltd, UK

ENC28J60-I/SS Microchip Integrated Circuit (Small Outline Packages) In Stock

What are the key features of ENC28J60-I/SS?

What is ENC28J60-I/SS used for?

What are the specifications of ENC28J60-I/SS?

Compliance & Regulatory

Where can I find the ENC28J60-I/SS datasheet?

What are equivalent replacements for ENC28J60-I/SS?

Frequently Asked Questions

What SPI clock speed does ENC28J60-I/SS support and how does that constrain packet throughput?

How much receive and transmit buffer does ENC28J60-I/SS provide, and does it support multiple receive filters?

When should a designer choose ENC28J60-I/SS over a microcontroller with built-in Ethernet MAC such as STM32F407?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Microchip

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