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78Q2123/F The 78Q2123/F is a 10/100BASE-TX Fast Ethernet transceiver with integrated MII interface, full duplex support, and automatic MDI/MDI-X correction. Operates from a single 3.3V supply and is available in a compact 32-QFN package.
Mfr Part #:

78Q2123/F

Available from 2 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The 78Q2123/F is a 10/100BASE-TX Fast Ethernet transceiver with integrated MII interface, full duplex support, and automatic MDI/MDI-X correction. Operates from a single 3.3V supply and is available in a compact 32-QFN package.
✓ Total Stock: 2,513 pcs

78Q2123/F Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
2,259 pcs
On Request
2259 pcs On Request 1 On Request On Request 14+/15+ On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
254 pcs
On Request
254 pcs On Request 1 On Request On Request 13+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

78Q2123/F Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Data Rate
Duplex
Interface
Mounting Type
Number of Drivers
Operating Temperature
Power Consumption
Protocol
Receiver Hysteresis
Supplier Device Package
Supplier Package
Type
Voltage
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78Q2123/F Description

Short technical summary and product information.

The 78Q2123/F is a small footprint 10/100BASE-TX Fast Ethernet transceiver designed for embedded applications. It integrates a Media Independent Interface (MII), ENDECs, scrambler/descrambler, dual-speed clock recovery, and full-featured auto-negotiation functions. The transceiver meets IEEE 802.3 specifications for both 10BASE-T and 100BASE-TX operation over twisted-pair cabling. It supports full duplex communication and features automatic MDI/MDI-X crossover correction. The device operates from a typical 3.3V supply (3.0V to 3.6V) and consumes approximately 290mW. It includes an on-chip pulse shaper and low-power line driver, as well as an adaptive equalizer and baseline restoration circuit for accurate data recovery. The 78Q2123/F is offered in a 32-lead QFN package with a 5x5 mm body, suitable for surface-mount assembly. It is rated for commercial temperature range (0°C to 70°C) and includes power-saving modes and programmable LED indicators.

78Q2123/F Quick Information

Product Type: Transceiver
Canonical Name: 78Q2123/F Fast Ethernet Transceiver with MII Interface
Subcategory: Fast Ethernet Transceiver

78Q2123/F Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

78Q2123/F Features

  • Integrated 10BASE-T/100BASE-TX transceiver.
  • Full duplex operation supported.
  • Automatic MDI/MDI-X crossover correction.
  • Single 3.3V supply with low power ~290mW.
  • Compact 32-QFN (5x5 mm) package.

78Q2123/F Applications

  • Ideal for embedded Ethernet in game consoles.
  • Used in broadband modems and routers.
  • Suitable for network printers and set-top boxes.
  • Designed for audio/visual equipment.
  • Works with Category-5 UTP cabling.

78Q2123/F FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range?

The supply voltage is 3.3V typical, with a range of 3.0V to 3.6V.

What is the operating temperature range?

The operating temperature range is 0°C to 70°C (commercial grade).

What package is this transceiver available in?

It is available in a 32-VFQFN Exposed Pad package, specifically a 32-QFN-EP (5x5 mm).

Is this device RoHS compliant?

Yes, it is marked as RoHS3 compliant (unverified).

What data rates does it support?

It supports 10 Mbps (10BASE-T) and 100 Mbps (100BASE-TX).

What interface does it use to connect to the MAC?

It uses the Media Independent Interface (MII) as specified by IEEE 802.3.

Does it support auto-negotiation?

Yes, it features full-featured auto-negotiation.

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