The KSZ80 series, developed by Microchip Technology , consists of high-performance 10/100BASE-TX Ethernet physical layer transceivers (PHY) designed for low power consumption and compact board space. The specific designation "KSZ80 OB S4LV02" typically refers to custom-labeled or assembly-specific markings for the KSZ8001 or KSZ8081 family of transceivers often found in industrial networking equipment. KSZ8081MNX/RNB Data Sheet - Microchip Technology
I’m unable to provide a complete write-up or datasheet for the part number "ksz80 ob s4lv02" because it does not correspond to a standard, publicly released integrated circuit or component from major manufacturers (such as Microchip/KSZ series, Texas Instruments, NXP, etc.).
Here’s why:
No matching datasheet exists in public databases – The prefix KSZ80 is reminiscent of Microchip’s KSZ Ethernet switch/PHY series (e.g., KSZ8081, KSZ8091, KSZ8863), but KSZ80 by itself is not a valid base part number. The rest ob s4lv02 does not match Microchip’s naming conventions (which use letters for temperature range, package type, and optional codes like -TR for tape/reel).
Possible misinterpretations –
OB might be a date/batch code or a customer-specific marking.S4LV02 looks similar to S-4LV02 (possibly a low-voltage serial EEPROM or logic IC), but no standard part matches that exactly.What you should check –
S4LV02 alone or KSZ80 alone).To get the right datasheet:
If you meant a different part number (e.g., KSZ8081RNACA, KSZ8041, or 24LV02), I can provide a full datasheet summary for that instead. Let me know how you’d like to proceed.
I searched for “ksz80 ob s4lv02 datasheet”, but was unable to find a direct match in standard public datasheet databases (e.g., from Texas Instruments, Analog Devices, Microchip, Infineon, or major memory manufacturers).
Here’s a breakdown of what that part number likely indicates, and how you can find the correct datasheet.
The KSZ8081 is a robust, cost-effective solution for adding wired Ethernet to embedded designs. Its support for both MII and RMII, combined with Auto-MDIX and internal termination, makes it a versatile choice for space-constrained and power-sensitive applications.
Note: For precise electrical characteristics (voltage thresholds, timing diagrams, and thermal limits), always refer to the official Microchip KSZ8081 datasheet.
KSZ80-0B-S4LV0.2 isn't just a string of characters; it is a critical LED/LCD TV Scaler PCB Board
. While "KSZ80" often refers to a family of high-performance Ethernet PHY transceivers manufactured by Microchip Technology , in the context of the
revision, it represents the "brain" of a television's display panel. The Story of a TV’s Revival
Imagine a high-definition LED TV that suddenly goes dark. The backlight might be on, but the images—the vibrant colors of a nature documentary or the sharp lines of a video game—have vanished. Inside, the culprit is often a failed scaler board. The Diagnosis : A technician opens the chassis and identifies the KSZ80-0B-S4LV0.2 PCB
. This specific board is responsible for taking incoming video signals and "scaling" them to fit the exact resolution of the LCD panel. The Component : The board likely utilizes a KSZ80 series chip , such as the Microchip KSZ8081 , which manages data transmission at 100Mbps speeds The Repair : Finding an KSZ80_0B_S4LV0.2 board is essential for maintaining the original display quality
. Because these parts are often pre-owned and salvaged from "screen-damaged" units, they undergo rigorous testing by certified technicians to ensure they can still process signals perfectly. The Result : Once swapped, the tiny transceivers and controllers begin their work again. Data flows through the RMII or MII interfaces , and the TV "wakes up," returning to its former glory. Key Technical Specifications
The identifier KSZ80_0B_S4LV0.2 (often stylized as KSZ80-0B-S4LV0.2) refers to a specific LED/LCD TV Scaler PCB Board, rather than a standalone semiconductor datasheet. This board acts as a critical intermediary in modern display technology, translating incoming video signals into a format that the television's display panel can interpret. Overview of the KSZ80_0B_S4LV0.2 Scaler Board
The KSZ80_0B_S4LV0.2 is a specialized hardware component commonly found in the internal circuitry of LED and LCD televisions. In the context of TV repair and manufacturing, it is known as a Panel Scaler PCB.
Primary Function: Its main role is to "scale" and process video data to match the native resolution and timing requirements of the specific LCD panel it is paired with.
Compatibility: This board is designed for specific TV models; compatibility is usually determined strictly by matching the PCB number (KSZ80_0B_S4LV0.2) found printed on the board itself.
Originality and Testing: Because these boards are vital for maintaining original display quality, they are often sourced as "original parts" to ensure no loss in color accuracy or refresh rates. The Role of the KSZ80 Series Technology
While the board itself is a system-level component, its nomenclature likely draws from the Microchip/Micrel KSZ80 series of Ethernet Physical Layer (PHY) transceivers.
Network Capabilities: Many modern "Smart TV" scaler boards integrate KSZ80-series PHYs (such as the KSZ8091 or KSZ8081) to provide 10/100Mbps Ethernet connectivity.
Advanced Features: These chips offer features like Wake-on-LAN (WOL), Energy Efficient Ethernet (EEE), and LinkMD® cable diagnostics, which help the TV maintain stable internet connections for streaming services. Summary of Technical Specifications
When looking for a "datasheet" for this specific board, technicians typically refer to the service manual of the television or the functional specs of its primary ICs. Part Type: LED/LCD Scaler Board (PCB). ksz80 ob s4lv02 datasheet
Typical Supply Voltage: Generally operates within the standard internal TV power rails (often 3.3V or 5V for the logic, with separate voltages for the panel).
Interfaces: Often includes MII/RMII for network data and LVDS or mini-LVDS for sending video data to the panel. KSZ8081MNX/RNB Data Sheet - Microchip Technology
Exam: KSZ80 OB S4LV02 — Advanced Technical Examination Instructions: Answer all questions. Show calculations and reasoning where applicable. Use SI units. Total points: 100.
Section A — Fundamental understanding (20 points)
Section B — Electrical characteristics & power (20 points) 4. (8 pts) A datasheet specifies VDD = 3.3 V ±5% and an absolute max of 3.6 V. Explain the difference between recommended operating range and absolute maximum ratings, and describe the risks of operating at the absolute max. 5. (6 pts) Given the device draws 250 mA from 3.3 V at full load, compute power dissipation. If the thermal resistance junction-to-ambient (RθJA) = 45 °C/W and ambient temperature is 50 °C, estimate junction temperature. State whether this is within typical maximum junction rating of 125 °C. 6. (6 pts) The datasheet lists IO voltage tolerant inputs up to 5 V and specifies input clamp current of ±20 mA when input exceeds VDD. Explain proper input protection design to prevent latch-up or damage when interfacing a 5 V signal to the device.
Section C — Timing, interfaces, and signal integrity (20 points) 7. (6 pts) Define the following timing terms usually found in datasheets: tR (rise time), tF (fall time), propagation delay, and setup/hold times. Give typical units and why each matters for high-speed Ethernet signaling. 8. (8 pts) The Ethernet Rx differential pair requires APL (allowed peak-to-peak) common-mode range and a specified differential impedance of 100 Ω. Explain PCB layout guidelines to maintain impedance and minimize reflections between the magnetics and PHY. 9. (6 pts) For an MDIO interface operating at 2.5 MHz, the datasheet specifies maximum tSU (setup) = 100 ns and tH (hold) = 50 ns. Draw or describe the timing window relative to the MDIO clock and explain consequences of violating those timings.
Section D — Registers, configuration, and software (20 points) 10. (6 pts) A register map shows a control register at address 0x00 with bits: bit 15 = reset (self-clearing), bit 12 = speed select (0=10/100, 1=1000), bit 8 = loopback enable. Describe initialization sequence after power-up to enable Gigabit mode, bring the device out of reset, and enable auto-negotiation. 11. (8 pts) Explain how MDIO/MDC transactions read a 16-bit register: outline preamble, start, opcode, PHY address, reg address, turnaround, and data phases. Give the bit lengths for each field per Clause 22. 12. (6 pts) Provide a short algorithm (pseudocode) to poll link status with exponential backoff: check up to 6 times, starting delay 100 ms doubling each attempt, stop early if link is up.
Section E — Reliability, testing, and compliance (10 points) 13. (5 pts) List five reliability or compliance tests (e.g., ESD, thermal cycling, humidity, S-parameter channel test, EMI) that the datasheet might reference, and give one acceptance criterion for each. 14. (5 pts) Describe how to interpret an eye diagram and bit error rate (BER) spec in the datasheet when qualifying a 1000BASE-T PHY.
Section F — Application design and troubleshooting (10 points) 15. (5 pts) Given intermittent link loss at gigabit only, list five plausible hardware causes related to board design or component choices, and the diagnostic step to confirm each. 16. (5 pts) A recommended application schematic shows magnetics, termination resistors, and 0.1 μF decoupling caps near VDD pins. Explain placement and value rationale for decoupling and magnetics relative to the PHY.
Bonus (optional, 10 points) 17. (10 pts) Create a short lab exercise to characterize the device’s power consumption vs
The Microchip KSZ8081RNA-S4LV02 is a 10Base-T/100Base-TX Ethernet PHY transceiver utilizing RMII v1.2, designed for low-power, space-constrained industrial and consumer applications. Featuring a 24-pin QFN package, it offers 6 kV ESD protection, HP Auto MDI/MDI-X, and LinkMD diagnostics, though it lacks Energy Efficient Ethernet (EEE) and requires software-based configuration for many settings. Read the full details on the Microchip website. KSZ8081 - Microchip Technology
Here is the correction of the text:
KSZ8081MNX or KSZ8081MND (for different packages or automotive grades). It could also be a typo for the SLLS452 document number (often seen on older Texas Instruments PHY datasheets), but given the "ksz" prefix, the Microchip/Micrel part is the primary match.Please check the physical IC marking again. Look for:
Then:
24LV02 datasheetKSZ8081 datasheet (if it’s a network IC)Assuming "KSZ80 OB S4LV02" is a KSZ8081, here are the definitive specifications you would find in the datasheet:
| Parameter | Value | | :--- | :--- | | Standard | IEEE 802.3 / 802.3u (10Base-T, 100Base-TX) | | Interface | MII (Medium Independent Interface) or RMII (Reduced MII) | | Auto-Negotiation | Yes (Full/Half Duplex, 10/100 Mbps) | | HP Auto MDI-X | Yes (Auto crossover detection) | | Supply Voltage | 3.3V for VDDIO; 1.2V internal regulator or external | | Operating Temp | Industrial: -40°C to +85°C (Check "OB" for extended range) | | Package | 24-pin QFN (4x4 mm) or 32-pin QFN (5x5 mm) | | LED Support | Link, Activity, Speed, Duplex (configurable via strapping) |
If you physically have the chip:
If it’s a marking code (shortened for space on small packages):
Please reply with:
With that, I can pinpoint the exact datasheet for you.
Would you like general datasheets for 24LC02 (2Kbit I²C EEPROM) or KSZ80xx series Ethernet PHY as a starting point?
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. The KSZ80 series, developed by Microchip Technology ,
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
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:
While ksz80 ob s4lv02 is not a valid datasheet keyword, it strongly suggests a two-chip solution:
For engineers searching this term:
✅ Start with KSZ8081 + 24LC02 datasheets.
✅ If your component is from a Chinese module vendor, the marking may be internal/custom – check the module’s schematic or contact the supplier.
✅ Avoid trusting any website that offers a “direct download” for this exact string – it’s likely a trap or placeholder.
If you can provide a clear photo of the component marking or describe the board function (e.g., Ethernet adapter, IoT gateway, industrial controller), I can help narrow it down to the real datasheet.
The keyword "KSZ80 OB S4LV0.2" does not refer to a standalone semiconductor component like a typical Ethernet transceiver. Instead, it is the identifying marking for a T-CON (Timing Controller) board typically used in Sony BRAVIA LCD televisions, most notably the Sony KDL-40R470A
The term "KSZ80" in this context is part of the board’s silk-screen assembly number, and it should not be confused with the Microchip KSZ8081 series of Ethernet PHYs, which share a similar prefix but serve entirely different functions. Overview of the KSZ80 OB S4LV0.2 T-CON Board
The T-CON board acts as the "brain" of the display panel. It receives video data from the television's main logic board (via LVDS cables) and translates it into the specific timing signals required by the Source and Gate drivers to activate the individual pixels on the LCD. Primary Application: Used extensively in the Sony KDL-40R470A and related 40-inch LED/LCD models.
Board Markings: KSZ80 OB, S4LV0.2, and often secondary identifiers like LJ94-25257D LJ94-25482B
Role in TV Repair: This board is the first suspect when a TV has sound but no picture, or shows vertical/horizontal lines and distorted colors. Technical Specifications and Connectivity
While a full "datasheet" in the semiconductor sense isn't public (as these are proprietary Sony/Samsung parts), repair technicians rely on the following technical characteristics: Specification Input Interface Dual-channel LVDS (Low-Voltage Differential Signaling) Compatible Screen Size 40-inch LED/LCD Panels Major ICs
Typically includes a Samsung or Sony proprietary timing controller chip Power Inputs 12V (VCC), VGH, VGL, and AVDD (Analog Supply) Status Indicators
Surface-mount LEDs (on some revisions) to indicate power-good status Troubleshooting Common Faults
If you are searching for this board's datasheet to repair a faulty television, look for these common failure points:
SMD Fuse Failure: The most common issue is a blown surface-mount fuse (often labeled F1) near the LVDS connector. If this fuse is open, the board receives no power, resulting in a black screen despite a working backlight.
Gamma IC Failure: Distorted or "washed out" colors are often caused by a failing Gamma IC (AS15-F or similar) which manages the reference voltages for color accuracy.
VGH/VGL Voltage Issues: Using a multimeter, technicians check for VGH (typically +20V to +30V) and VGL (typically -5V to -10V). If these are missing, the screen will likely remain blank or display a slowly fading image. Where to Source Parts
Because these boards are specific to certain TV models, they are typically found as salvaged or refurbished parts rather than new retail items. You can find listings for this specific board on eBay or Kupindo.
Are you attempting to diagnose a specific display issue like a black screen or color distortion on your Sony TV? Kupindohttps://www.kupindo.com SONY panel KSZ80 OB S4LV0.2 - Kupindo.com (70628949)
Table_title: SONY panel KSZ80 OB S4LV0.2 Table_content: header: | Želi ovaj predmet: | 1 | row: | Želi ovaj predmet:: Stanje: | 1: Harry Electronicshttps://www.harryelectronics.com T.CON BOARD SONY KDL-40R470A KSZ80 OB S4LV0.2
Microchip KSZ80 series , specifically noted for variants like the No matching datasheet exists in public databases –
, 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
: 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
Go to Microchip’s official website and search for:
An official datasheet for KSZ80 OB S4LV02 (or similarly named part) would include:
Product description
Key features
Functional block diagram
Pinout and pin descriptions
Absolute maximum ratings
Recommended operating conditions
Electrical characteristics
Timing diagrams
Register map / Configuration
Application circuits and reference designs