MICREL SEMICONDUCTOR  KSZ8721B  Ethernet Controller, 100 Mbps, IEEE 802.3u, 2.375 V, 2.625 V, SSOP, 48


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Product Overview

The KSZ8721B is a 2.5V 10/100BaseTX/FX MII Physical Layer Transceiver operates at 2.5V to meet low voltage and low power requirements. The KS8721B/BT is a 10BaseT/100BaseTX/FX physical layer transceiver provides an MII to transmit and receive data. It contains the 10BaseT Physical Medium Attachment (PMA), Physical Medium Dependent (PMD) and Physical Coding Sub-layer (PCS) functions.
  • Single chip 100BaseTX/100BaseFX/10BaseT physical layer solution
  • 2.5V CMOS design, power consumption <200mW (excluding output driver current)
  • Fully compliant to IEEE 802.3u standard
  • Supports Media Independent Interface (MII) and Reduced MII (RMII)
  • Supports 10BaseT, 100BaseTX and 100BaseFX with Far_End_Fault detection
  • Supports power down mode and power saving mode
  • Configurable through MII serial management ports or via external control pins
  • Supports auto-negotiation and manual selection for 10/100Mbps speed and full/half-duplex mode
  • On-chip built-in analog front end filtering for both 100BaseTX and 10BaseT
  • LED outputs for link, activity, full/half duplex, collision and speed
  • Supports back to back, FX to TX for media converter applications
  • Supports MDI/MDI-X auto crossover
  • 2.5V/3.3V tolerance on I/O


Communications & Networking; Signal Processing
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Product Specifications, Documents & More

  • Controller IC Case Style: SSOP
  • Data Rate: 100Mbps
  • Digital IC Case Style: SSOP
  • Ethernet Type: IEEE 802.3u
  • IC Interface Type: MII, RMII
  • MSL: MSL 2 - 1 year
  • No. of Pins: 48
  • Operating Temperature Max: 70°C
  • Operating Temperature Min: 0°C
  • Packaging: Each
  • SVHC: No SVHC (17-Dec-2014)
  • Supply Voltage Max: 2.625V
  • Supply Voltage Min: 2.375V
  • Supply Voltage Range: 2.375V to 2.625V


Availability:  8

Available until stock is exhausted

  • 8 in stock for same day shipping

Price for: Each 1

Minimum order quantity: 1

Order multiple quantity: 1

Price: $2.73 $2.73



Quantity List Price Your Price
1 - 24 $5.54
25 - 99 $5.18
100 - 499 $4.50
500 - 999 $4.05
1000+ $3.85

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