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HomeProductsIntegrated Circuits (ICs)Interface - ControllersKSZ8842-PMBL
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KSZ8842-PMBL - Microchip Technology

Manufacturer Part Number
KSZ8842-PMBL
Manufacturer
Microchip Technology
Allelco Part Number
32D-KSZ8842-PMBL
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,076 pcs available, New & Original
Parts Description
IC ETHERNT SW 2PORT PCI 100LFBGA
Package
100-LFBGA
Data sheet
KSZ8842-PMBL.pdf

PCN Assembly/Origin

KSZ8842-PMBL 15/Jul/2019.pdf

HTML Datasheet

KSZ8842-PMQL,PMBL.pdf

PCN Design/Specification

KSZ8842-PMQL/PMBL 08/Jul/2020.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 6076
  • Unit Price: $13.97
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $13.97 $13.97
260+ $5.406 $1,405.56
520+ $5.217 $2,712.84
1040+ $5.123 $5,327.92
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

KSZ8842-PMBL Tech Specifications
Microchip Technology - KSZ8842-PMBL technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - KSZ8842-PMBL

Product Attribute Attribute Value
Manufacturer Microchip Technology
Voltage - Supply 3.1V ~ 3.5V
Standards 10/100 Base-T/TX PHY
Series -
Protocol Ethernet
Package / Case 100-LFBGA
Product Attribute Attribute Value
Package Tray
Operating Temperature 0°C ~ 70°C
Interface PCI
Function Switch
Current - Supply 122mA
Base Product Number KSZ8842

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 5A991B1
HTSUS 8542.39.0001

Parts Introduction

KSZ8842-PMBL Image
KSZ8842-PMBL (1)

Manufacturer Part Number

KSZ8842-PMBL

Manufacturer

Microchip Technology

Introduction

The KSZ8842-PMBL is a highly integrated Ethernet controller designed for embedded systems.

Product Features and Performance

Integrated two-port switch supporting 10/100 Base-T/TX PHY.

PCI interface for simple integration with host processors.

Low operating voltage range from 3.1V to 3.5V.

Efficient power consumption with a current supply of 122mA.

Designed for operation within a temperature range of 0°C to 70°C.

Housed in a compact 100-LFBGA package.

Product Advantages

Simplifies network management and design complexities by providing a two-port switch capability.

Low power consumption enhances system efficiency.

The compact footprint is ideal for space-constrained applications.

Direct PCI interface allows easy integration into a wide range of embedded systems.

Key Technical Parameters

Protocol: Ethernet

Function: Switch

Interface: PCI

Standards: 10/100 Base-T/TX PHY

Voltage Supply: 3.1V ~ 3.5V

Current Supply: 122mA

Operating Temperature: 0°C ~ 70°C

Package / Case: 100-LFBGA

Quality and Safety Features

Manufactured by Microchip Technology, a leader in semiconductor technology, ensuring high reliability and performance.

Compatibility

Compatible with a wide range of microprocessors and microcontrollers through its PCI interface.

Application Areas

Networking equipment, including routers and switches.

Embedded systems requiring Ethernet communication capability.

Industrial automation and control systems.

Product Lifecycle

The product status is active, with no current indication of nearing discontinuation.

Availability of replacements or upgrades can be checked with Microchip Technology for future planning.

Several Key Reasons to Choose This Product

High integration facilitates the development of complex networked devices with reduced component count.

Low power consumption makes it suitable for energy-sensitive applications.

The flexibility offered through PCI interface compatibility broadens the scope of potential applications.

Supported by Microchip Technology, ensuring access to technical support and documentation.

Operates within a common industrial temperature range, making it suitable for a variety of environments.

Frequently Asked Questions(FAQ)

How does the KSZ8842-PMBL handle power consumption in a typical 100BASE-TX network environment, and what design considerations are necessary to ensure stable operation within its specified current limits?
The KSZ8842-PMBL draws up to 122mA at 3.3V supply under full load conditions, which is typical for dual-port Ethernet switching with both PHYs active. In a balanced traffic scenario involving simultaneous bidirectional data flow across both ports, designers should account for peak current draw during high-throughput periods. To maintain stability, decoupling capacitors should be placed close to the VDD pins, and the PCB layout must minimize trace inductance and resistance. Thermal performance is also critical given the operating temperature range of 0°C to 70°C; inadequate heat dissipation can lead to thermal throttling or reliability issues, especially in compact form factors like the 100-LFBGA package.
What are the key differences between using the KSZ8842-PMBL in a standard PCI interface configuration versus alternative industrial-grade variants when deploying in embedded control systems requiring extended temperature support?
While the KSZ8842-PMBL supports standard PCI signaling at 3.3V I/O levels, industrial applications often demand components rated for wider temperature ranges beyond the device’s 0°C to 70°C specification. Industrial variants may include enhanced ESD protection, extended reliability testing, and broader supply voltage tolerance. The KSZ8842-PMBL itself lacks such hardening but remains suitable for commercial environments. Designers targeting harsh conditions must consider alternative base products or external protection circuits unless the application inherently stays within the defined thermal envelope.
Can the KSZ8842-PMBL support full-duplex communication on both ports simultaneously without packet loss, and how does internal buffering affect latency under sustained 100 Mbps traffic loads?
Yes, the KSZ8842-PMBL supports full-duplex operation independently on each port, enabling simultaneous transmission and reception without collision detection delays. Each port includes dedicated transmit and receive buffers managed by integrated MAC/PHY logic. Under sustained 100 Mbps loads, internal buffer capacity—typically several kilobytes per port—helps mitigate short-term bursts. However, prolonged congestion can lead to tail drop if external queues are insufficient. For low-latency designs, minimizing frame size variability and avoiding microburst scenarios is essential to prevent buffer exhaustion.
Is it possible to cascade multiple KSZ8842-PMBL devices to expand network segmentation, and what limitations exist due to the PCI host interface architecture?
Cascading KSZ8842-PMBL units via their internal switch fabric is feasible only if the system controller supports multi-device PCI enumeration or uses software-based bridging. Since each KSZ8842 connects directly to a PCI bus master, true hardware-level cascading isn't supported natively. Instead, multiple switches would require separate PCI slots or a shared memory-mapped configuration space managed by firmware. This complicates resource allocation and increases host CPU overhead, making it impractical for most embedded applications without significant architectural redesign.
How should grounding and signal integrity be managed when routing the MDI/MDIX signals from the KSZ8842-PMBL to RJ-45 connectors in a compact PCB design?
The KSZ8842-PMBL integrates 100BASE-TX transceivers that interface directly with magnetics via MDI/MDI-X lines. To preserve signal integrity, differential pairs (TX±, RX±) must maintain controlled impedance (typically 100Ω) over their entire path. A solid ground plane beneath the PHY section reduces EMI susceptibility, and return paths should avoid splits near high-speed traces. Placement of common-mode chokes and isolation transformers must align with the PHY’s center taps, ensuring symmetrical coupling. Poor grounding can introduce jitter or link instability, particularly at cable lengths exceeding 100 meters.
What role does the Moisture Sensitivity Level (MSL) rating of 3 play in the manufacturing and handling of the KSZ8842-PMBL, and how does this impact assembly scheduling?
With an MSL of 3 (168 hours), the KSZ8842-PMBL must be assembled within one week after opening moisture barrier packaging to prevent condensation damage during reflow soldering. Manufacturers typically track time since unsealing and schedule production accordingly. Failure to adhere risks popcorn cracking or delamination in the 100-LFBGA package. This constraint influences Just-In-Time inventory practices and necessitates strict documentation of bake cycles or storage conditions for long-term reliability assurance.
How do the RoHS3 and REACH compliance status of the KSZ8842-PMBL influence material selection for adjacent passive components in environmentally sensitive applications?
Although the KSZ8842-PMBL is RoHS3 compliant and REACH unaffected, surrounding components must also meet corresponding regulations to ensure end-system compliance. Using non-compliant capacitors or connectors could invalidate certification claims. Additionally, halogen-free substrates and conformal coatings may be required depending on deployment environment. Designers must verify full bill-of-materials conformance rather than relying solely on the IC’s status, as regulatory frameworks apply holistically across all materials in the product lifecycle.
What are the implications of using the KSZ8842-PMBL in a battery-powered device where power gating and sleep modes are implemented, given its fixed 122mA active current?
The KSZ8842-PMBL does not support deep sleep states or dynamic power scaling; once powered, it consumes approximately 122mA at 3.3V during normal operation. In battery-powered systems, this continuous draw significantly impacts runtime. Power gating must isolate the chip completely during inactive periods using external switches or MOSFETs. Wake-up latency through PCI interrupts should be factored into system responsiveness requirements. Alternative low-power Ethernet controllers with wake-on-LAN capabilities may offer better efficiency for intermittent connectivity use cases.
Can the KSZ8842-PMBL operate reliably over extended cable runs exceeding 100 meters when connected to legacy Fast Ethernet infrastructure?
No, the IEEE 802.3u standard limits 100BASE-TX links to 100 meters maximum unshielded twisted pair (UTP). Exceeding this distance degrades signal-to-noise ratio beyond recoverable thresholds, resulting in CRC errors or link failure. The KSZ8842-PMBL complies with these standards but cannot compensate for physical layer impairments. Repeaters or media converters may extend reach, though they introduce additional latency and complexity. Designers must adhere strictly to cabling specifications to guarantee interoperability and performance.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology KSZ8842-PMBL

Product Attribute KSZ8842-PMBL-AM KSZ8842-PMBL-AM-TR KSZ8842-PMBL-TR KSZ8842-PMQL
Part Number KSZ8842-PMBL-AM KSZ8842-PMBL-AM-TR KSZ8842-PMBL-TR KSZ8842-PMQL
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Interface - - - -
Standards - - - -
Protocol - - - -
Voltage - Supply - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Current - Supply - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Function - - - -

KSZ8842-PMBL Datasheet PDF

Download KSZ8842-PMBL pdf datasheets and Microchip Technology documentation for KSZ8842-PMBL - Microchip Technology.

Datasheets
KSZ8842-PMQL,PMBL.pdf
PCN Assembly/Origin
KSZ8842-PMBL 15/Jul/2019.pdf
HTML Datasheet
KSZ8842-PMQL,PMBL.pdf
PCN Design/Specification
KSZ8842-PMQL/PMBL 08/Jul/2020.pdf
PCN Packaging
MBB/Label Chgs 16/Nov/2018.pdf

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
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QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
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We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
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  • ESD
  • PSMA
KSZ8842-PMBL Image

KSZ8842-PMBL

Microchip Technology
32D-KSZ8842-PMBL

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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