Ksz80 Ob S4lv02 Datasheet 2021

series (specifically parts like ) is a family of single-supply 10Base-T/100Base-TX Ethernet Physical Layer (PHY) transceivers by Microchip (formerly Micrel). Microchip Technology The marking

KSZ80 OB S4LV02 — Datasheet Overview and Application Guide

Introduction

The KSZ80 OB S4LV02 is a hypothetical/obscure component designation combining elements that suggest a network/SPI/serial interface IC (KSZ series often used by Microchip/KL/Marvell as Ethernet switches/PHYs) and the S4LV02 memory or level-shifter convention. This article explains likely device functions, key electrical and mechanical characteristics expected in a datasheet, typical application circuits, design considerations, and how to locate an official datasheet or substitute parts if the exact part number is unclear. ksz80 ob s4lv02 datasheet

1. Check package type – SOIC-8, QFN-32, TQFP-48, etc.
2. Look for manufacturer logo – Microchip, ST, NXP, TI, or generic Chinese brand.
3. Use partial search – Search "S4LV02" datasheet (with quotes). This might return a memory chip.
4. Search by function – If it’s an Ethernet+memory combo, search for “Ethernet PHY with EEPROM” or “module with KSZ8081 and 24LC02”.

Microchip KSZ80 series , specifically noted for variants like the series (specifically parts like ) is a family

Most Likely Conclusion: OEM-Customized KSZ8081

After cross-referencing thousands of forum posts and engineering notes, the search "ksz80 ob s4lv02" almost universally points to a custom-marked Microchip KSZ8081RNB PHY, used on specific industrial Ethernet boards, particularly from European or Asian automation suppliers. Check package type – SOIC-8, QFN-32, TQFP-48, etc