DP83848MSQ Texas Instruments In Stock
DP83848MSQ is a single-port 10/100 Mbps Ethernet Physical Layer (PHY) transceiver by Texas Instruments. Key specs: 3.3 V supply, MII/RMII interface, -40°C to +85°C operation, 32-pin QFN package. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of DP83848MSQ?
- 10/100 Mbps auto-negotiation with MII and RMII interface support for direct connection to Ethernet MACs and microcontrollers
- 3.3 V single-supply operation with integrated 1.8 V regulator, reducing external power rail requirements on embedded Ethernet designs
- 32-pin QFN (MLF) package enabling compact PCB footprint for industrial, embedded, and IoT Ethernet nodes
What is DP83848MSQ used for?
The DP83848MSQ is used in embedded Ethernet designs connecting microcontrollers and FPGAs to 10/100BASE-TX networks through its MII or RMII interface, including industrial automation controllers, smart meters, and networked sensor nodes. Its integrated cable diagnostics and link quality indication simplify field maintenance in remote Ethernet installations. It is also found in network-attached storage (NAS) devices, PLCs, and medical instrumentation requiring IEEE 802.3 compliant 100 Mbps Ethernet at 3.3 V from -40°C to +85°C.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for DP83848MSQ?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which MAC interface modes does the DP83848MSQ support for connecting to a microcontroller?
The DP83848MSQ supports both MII (Media Independent Interface) at 25 MHz clock and RMII (Reduced MII) at 50 MHz clock, providing flexibility to connect to virtually any microcontroller or FPGA Ethernet MAC. RMII mode reduces the pin count from 18 MII signals to 9 RMII signals, simplifying PCB routing and freeing GPIO resources on MCUs such as STM32, LPC, or PIC32 families.
What is the operating temperature range of DP83848MSQ and why does it matter for industrial designs?
The DP83848MSQ is rated for -40°C to +85°C industrial temperature operation, ensuring reliable Ethernet link maintenance across factory floor environments, outdoor enclosures, and control cabinet installations with significant thermal cycling. At 85°C maximum junction temperature with a 3.3 V supply, the device remains within IEEE 802.3 100BASE-TX link timing specifications, preserving 100 Mbps throughput without derating.
How does the DP83848MSQ handle 10/100 Mbps speed auto-negotiation in a mixed-speed network?
The DP83848MSQ performs IEEE 802.3 auto-negotiation at link establishment, advertising both 10BASE-T and 100BASE-TX capabilities with half and full duplex options. The PHY resolves to the highest common speed and duplex mode within approximately 1 second of link detection. Alternatively, speed and duplex can be forced via SMI (Serial Management Interface) register writes at 1.2 MHz clock for deterministic link configuration in managed industrial networks.
What package does DP83848MSQ use, and how does it affect PCB layout for Ethernet signal integrity?
The DP83848MSQ is housed in a 32-pin QFN (MLF) package measuring approximately 5 mm x 5 mm with 0.5 mm pitch, placing differential TX and RX pairs on adjacent pins to minimize routing length to the magnetics. The exposed thermal pad should be soldered to a ground plane using at least 4 thermal vias to keep the junction below 125°C maximum and maintain less than 5 ps of differential skew on the 100 Mbps transmit pair.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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