Ksz80 Ob S4lv02 Datasheet May 2026

Please check the physical IC marking again. Look for:

Then:

Since you will not find a PDF labeled "KSZ80 OB S4LV02," you must cross-reference to the base component. Follow these steps:

Given the ambiguous part string, treat this as either:

You can download the official datasheet directly from the manufacturer's website:

The "KSZ80" series (specifically the KSZ8081MNX/RNB transceivers) features several "interesting" capabilities designed to lower system costs and simplify debugging.

The most notable features often highlighted in the Microchip KSZ8081 datasheets include:

LinkMD® TDR-based Cable Diagnostics: This utilizes Time-Domain Reflectometry (TDR) to identify faulty copper cabling, specifically detecting opens, shorts, and impedance mismatches.

Parametric NAND Tree Support: Provides a simple mechanism for detecting manufacturing faults (like open pins or shorts) between the chip’s I/Os and the PCB.

Integrated LDO Regulator: The chip includes a built-in 1.2V regulator to power its core, allowing the entire device to operate from a single 3.3V supply. ksz80 ob s4lv02 datasheet

On-Chip Termination: It includes built-in termination resistors for differential pairs, which reduces the need for external components and simplifies board layout.

Flexible I/O Voltage: Supports digital I/O voltages of 1.8V, 2.5V, or 3.3V, allowing it to interface directly with various host controllers without level shifters.

Quiet/Low-Power Modes: Features standard power-down and Energy-Detect Power-Down, which reduces consumption when the link is idle. Summary of Specifications Specification Speed 10Base-T/100Base-TX (10/100 Mbps) Interface MII (MNX version) or RMII v1.2 (RNB version) ESD Protection ±6 kV (HBM) on MDI pins Package 32-pin QFN (5mm x 5mm) Operating Temp

Commercial (0°C to +70°C) or Industrial (-40°C to +85°C) KSZ8081MNX/RNB Data Sheet - Microchip Technology

Microchip KSZ80 series , specifically noted for variants like the

, represents a family of compact, single-chip 10Base-T/100Base-TX Ethernet Physical Layer (PHY) transceivers designed for low power and high reliability. These components are fundamental in connecting networking hardware to the physical medium, such as copper or fiber-optic cables. Key Technical Highlights

The KSZ80 series is engineered to simplify board design while maintaining robust performance: Integrated Termination

: Includes on-chip termination resistors for differential pairs, which reduces component count and simplifies PCB layout. Auto MDI/MDI-X

: Features HP Auto MDI/MDI-X to automatically detect and correct straight-through or crossover cable connections. Power Efficiency Please check the physical IC marking again

: Supports multiple power-saving modes and energy-efficient Ethernet (EEE) to minimize power consumption when idle or when the cable is disconnected. LinkMD® Diagnostics

: Provides TDR-based cable diagnostics to identify faulty copper cabling, such as shorts or open circuits. Wake-on-LAN (WOL)

: Supports remote wake-up via magic packets or custom packet detection, ideal for power-managed systems. Interface and Physical Specs Interface Options : Most models support standard (Media Independent Interface) or

(Reduced Media Independent Interface) for flexible integration with various MAC controllers. : Typically available in small-footprint packages like the 48-pin LQFP

(7 mm x 7 mm), making them suitable for space-constrained industrial and consumer devices. Supply Voltage

: Operates on a single 3.3V supply with options for 1.8V, 2.5V, or 3.3V I/O voltage levels to match different processor requirements. Typical Applications

Given their industrial temperature rating (-40°C to +85°C) and diagnostic features, these transceivers are commonly found in: Industrial controllers and automation hardware. Set-top boxes and game consoles. Printers, IP phones, and SOHO networking equipment.

For the most accurate technical data, it is recommended to consult the official KSZ8091 Datasheet KSZ8081MLX Datasheet provided by Microchip Technology driver configuration steps for this component?

KSZ9031RNX - Gigabit Ethernet Transceiver with RGMII Support Use manufacturer part marking lookup tools :

It sounds like you’re looking for a datasheet or technical information on a part labeled “KSZ80 OB S4LV02” — possibly a memory chip (S4LV02 suggests a 2 Mbit SRAM or similar) combined with a KSZ80 marking (which could be a network controller or a custom ASIC).

However, I should be upfront: there is no widely known standard component with the exact string “KSZ80 OB S4LV02” in official datasheet databases (e.g., from Micron, Cypress, ISSI, Microchip, etc.).

Here’s a breakdown of what you might be dealing with — and a possible story behind the label:

Let’s break down the string to help you or other engineers locate the real datasheet.

The prefix KSZ is unmistakably associated with Microchip Technology (formerly Micrel Inc.). Microchip’s KSZ series is world-famous for Ethernet PHY (Physical Layer Transceivers) and integrated Ethernet switches.

Hypothesis 1: The base component is Microchip’s KSZ8081 or KSZ8041.