Ks8999

Updated September 11, 2026

Overview

Product sourcing insights & recommendations

24 来源

The KS8999 (Microchip/Micrel) is a widely sourced 9-port 10/100 Ethernet switch IC, though it is currently marked as Obsolete by official distributors like Mouser. This has led to a robust secondary market on Alibaba.com where "New & Original" stock remains available from Shenzhen and HK-based wholesalers.

1. Sourcing Options (Alibaba.com)

Wholesale prices on Alibaba.com range from US $0.10 to $1.68 per piece, depending on volume and specific variant (Commercial vs. Industrial).

* Top Suppliers: I have identified several verified distributors with transactions exceeding US $14,000 in this category.

* MOQ: Flexible options starting from 1 piece up to 100 pieces for bulk pricing.

* Key Vendors: ApexCore HK and Shenzhen Qihuawei Tech are primary holders of original stock.

2. Technical Specifications & Datasheets

The chip is an unmanaged 9-port switch (8 PHYs + 1 MII interface) optimized for 10/100BASE-TX/FX applications.

* Manufacturer: Microchip Technology (formerly Micrel).

* Package: 208-pin PQFP.

* Key Specs: Integrated 128KB SRAM, 1K MAC address support, and Auto MDI/MDI-X.

* Original Datasheet: [Download KSZ8999 Official PDF](https://ww1.microchip.com/downloads/en/DeviceDoc/00003635A.pdf) Microchip.

3. Global Price Benchmarks

While official retail prices are unavailable due to obsolescence, secondary market benchmarks are as follows:

* Secondary Market (Alibaba/LCSC): US $0.10 – $2.30 (Significant volume discounts available).

* Official Distributors (Mouser/DigiKey): Listed as Obsolete; no active pricing available Mouser.

A detailed CSV listing 34 matched products with supplier credentials and volume pricing is provided in the deliverables below.

Based on the sourcing results, you can proceed with:

Sources & References

24 sources cited · Verified industry data & reports

KS8999 Datasheet(PDF) - Micrel Semiconductor

ALLDATASHEET.COM

General Description The KS8999 contains eight 10/100 physical layer transceivers, nine MAC (Media Access Control) units with an integrated layer 2 switch.

KS8999 Demo Board User Guide

Mouser Electronics

The KS8999 demo board provides an industry standard MII (media independent. Interface) to interface to external Processors for router and ...

KS8999 | Microchip Technology Datasheet

SnapMagic

See KS8999 datasheet by or download in pdf. KS8999 Ethernet PHY Interface Evaluation Board. Explore a symbol, footprint, 3D model and download for free

KSZ8999

Microchip Technology

The KS8999 contains eight 10/100 physical layer transceivers, nine MAC (Media Access Control) units with an integrated layer 2 switch. Download KSZ8999 Data

KS8999

Farnell

The KS8999 contains eight 10/100 physical layer transceiv- ers, Data sheets and support documentation can be found on Micrel's web site at www. ...

KS8999 and KS8999I Specification Comparison

Ovaga Technologies

KS8999I are both industry-standard Interface ICs designed to meet rigorous hardware requirements. the KS8999I is housed in a 208-BFQFP. explore their detailed ...