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Microchip Technology KSZ9021GQI — Sensors & Transducers
Microchip Technology

KSZ9021GQI Gigabit Ethernet Transceiver – Microchip

MPNKSZ9021GQI
End of Life

Microchip Technology KSZ9021GQI, Gigabit Ethernet transceiver, full-duplex 8/8 driver/receiver, 3.135V–3.465V supply, -40°C to 85°C, 128-PQFP (14x20 mm), tray package.

$7.57Ref. price · indicative, final on quote
KSZ9021GQI datasheet
Packaging128-BFQFP
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

KSZ9021GQI Technical Specifications
ParameterValue
TypeTransceiver
Mounting typeSurface Mount
Voltage3.135V ~ 3.465V
ProtocolGigabit Ethernet
Operating temperature-40°C ~ 85°C
DuplexFull
PackageTray
Case128-BFQFP
Number of drivers (Receivers)8/8

Product details

Gigabit Ethernet PHY in a 128-PQFP

The KSZ9021GQI is a full-duplex Gigabit Ethernet transceiver from Microchip Technology, built for 1000BASE-T copper links. It integrates eight drivers and eight receivers (8/8) in a single 128-PQFP package (14x20 mm), making it a direct-fit PHY for managed switches, industrial Ethernet nodes, and embedded networking modules that need a single-chip physical-layer interface.

Supply rail and temperature grade

Operates from a 3.135V to 3.465V supply — a standard 3.3V rail with ±5% tolerance. The -40°C to 85°C industrial temperature range suits outdoor telecom cabinets, factory-floor controllers, and unventilated enclosures where commercial-grade parts would drift out of spec.

Active production — no obsolescence risk

Microchip lists the KSZ9021GQI as Active. The part is ROHS3 compliant.

Frequently asked questions

Is the KSZ9021GQI compatible with 3.3V logic?

Yes — the supply voltage range is 3.135V to 3.465V, which is a standard 3.3V rail with ±5% tolerance. The I/O levels are 3.3V-compatible, so no level shifters are needed when interfacing with a 3.3V MAC or controller.