All Products


1.8V 2.5V 3.3V 10/100 Base-T/TX PHY I2C, SPI Controllers Interface ICs QUAD KSZ8873 64 Pins Switch 0.5mm LQFP

  • Manufacturer: Microchip Technology
  • Origchip NO: 536-KSZ8873RLLI
  • Package: LQFP
  • Datasheet: PDF
  • Stock: 342
  • Description: 1.8V 2.5V 3.3V 10/100 Base-T/TX PHY I2C, SPI Controllers Interface ICs QUAD KSZ8873 64 Pins Switch 0.5mm LQFP(Kg)

Purchase & Inquiry



You may place an order without registering to XINJIADA.
We strongly suggest you sign in before purchasing as you can track your order in real time.

Means of Payment

For your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and wire transfer.

RFQ (Request for Quotations)

It is recommended to request for quotations to get the latest prices and inventories about the part.
Our sales will reply to your request by email within 24 hours.


1. You'll receive an order information email in your inbox. (Please remember to check the spam folder if you didn't hear from us).
2. Since inventories and prices may fluctuate to some extent, the sales manager is going to reconfirm the order and let you know if there are any updates.

Shipping Cost

Shipping starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.)
The basic freight (for package ≤0.5kg or corresponding volume) depends on the time zone and country.

Shipping Method

Currently, our products are shipped through DHL, FedEx, SF, and UPS.

Delivery Time

Once the goods are shipped, estimated delivery time depends on the shipping methods you chose:

FedEx International, 5-7 business days.

The following are some common countries' logistic time.



Factory Lead Time 10 Weeks
Mount Surface Mount
Package / Case LQFP
Number of Pins 64
Operating Temperature -40°C~85°C
Published 2009
JESD-609 Code e3
Part Status Active
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Number of Terminations 64
Terminal Finish Matte Tin (Sn)
Voltage - Supply 1.8V 2.5V 3.3V
Terminal Position QUAD
Terminal Form GULL WING
Peak Reflow Temperature (Cel) 260
Supply Voltage 1.8V
Terminal Pitch 0.5mm
Time@Peak Reflow Temperature-Max (s) 30
Base Part Number KSZ8873
Function Switch
Operating Supply Voltage 3.3V
Interface I2C, SPI
Number of Ports 3
Nominal Supply Current 88mA
Max Supply Current 115mA
Data Rate 100 Mbps
Protocol Ethernet
Number of Transceivers 2
Standards 10/100 Base-T/TX PHY
Height Seated (Max) 1.6mm
Length 10mm
Width 10mm
Radiation Hardening No
RoHS Status ROHS3 Compliant
Lead Free Lead Free

KSZ8873RLLI Overview

It is a part of the LQFP package. Temperature regulation to -40°C~85°C ensures reliable operation. The 1.8V 2.5V 3.3VV power source is all you need to use it. A number of 64 terminations are found in it. 1.8V is the supply voltage that enables high efficiency. As a member of the KSZ8873 family of numbers, it is a prime number. In order for the device to function, 64 pins must be used. 3.3V is the optimal supply voltage for maximum efficiency. Among these transceivers there is a 2 transceiver. 3 ports are owned by the part. It requires the greatest amount of current, 115mA, in order to function.

KSZ8873RLLI Features

3 ports

KSZ8873RLLI Applications

There are a lot of Microchip Technology KSZ8873RLLI Controllers Interface ICs applications.

  • MP3 Players
  • Dimmable LED Power Supply
  • HDTVs
  • Isolated RS-232/RS-485: Directly Drives Opto-Couplers
  • Embedded, Industrial Controller
  • Car Cigarette Jack
  • Custom USB Devices
  • Sensitive Applications
  • Storage, Datacenter
  • Docking
How can we help you?