Micrel Supplier Page

KSZ8051/8031/8021 Series


The KSZ8051/8031/8021 series is a low-power, small package 10/100 Physical (PHY) layer transceiver


Micrel's KSZ8051/8031/8021 SeriesMicrel's KSZ8051MLLI/MNLI/RNLI are single-supply 10Base-T/100Base-TX Ethernet physical layer transceivers for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable. These devices are a highly-integrated, compact solution. They reduce board cost and simplify board layout by using on-chip termination resistors for the differential pairs and by integrating a low-noise regulator to supply the 1.2 V core. The KSZ8051MLLI and KSZ8051MNLI offer the Media Independent Interface (MII) while the KSZ8051RNLI offers the Reduced Media Independent Interface (RMII) for direct connection with MII/RMII-compliant Ethernet MAC processors and switches. The KSZ8051MLLI/MNLI/RNLI operates over the industrial temperature range -40°C to +85°C. The KSZ8051MLLI is available in a 48-pin 7 mm x 7 mm QFN package. The KSZ8051MNLI and KSZ8051RNLI devices are available in a 32-pin 5 mm x 5 mm QFN package.

Features
  • Fully-compliant to IEEE 802.3/802.3u standard
  • Single 3.3 V supply with internal 1.2 V regulator, and optional 3.3 V, 2.5 V or 1.8 V VDDIO
  • Integration of termination resistors on the chip
  • LinkMD® TDR-based cable diagnostics
  • Energy Detect Power Down when the cable is not plugged; and power down/slow oscillator mode when the device is not in use
  • 25 MHz crystal for input reference clock
  • HP Auto MDI/MDIX crossover support

Applications
  • Digital TV
  • IP set-top box
  • Game console
  • IP phone
  • IP camera
  • Media converter
  • Automotive
  • Network printer/project
  • Industrial control

Digi-Key P/N Manufacturer P/N Description  
576-3731-ND KSZ8051MLL TXRX PHY 10/T100 3.3V MII 48LQFP Datasheet
576-3777-1-ND KSZ8051MNL TR TXRX PHY 10/T100 3.3V MII 32-QFN Datasheet
576-3777-2-ND
576-3777-6-ND
576-3778-1-ND KSZ8051RNL TR TXRX PHY 10/T100 3.3V RMII 32QFN Datasheet
576-3778-2-ND
576-3778-6-ND
576-3888-1-ND KSZ8051MLLI TR TXRX PHY 10/T100 3.3V MII 48LQFP Datasheet
576-3888-2-ND
576-3888-6-ND
576-3889-1-ND KSZ8051RNLI TR TXRX PHY 10/T100 3.3V RMII 32QFN Datasheet
576-3889-2-ND
576-3889-6-ND
576-3901-1-ND KSZ8051MNLI TR TXRX PHY 10/T100 3.3V 32QFN Datasheet
576-3901-2-ND
576-3901-6-ND

Evaluation Boards
Digi-Key P/N Manufacturer P/N Description  
576-3865-ND KSZ8051MNL-EVAL BOARD EVALUATION FOR KSZ8051MNL Datasheet
576-3864-ND KSZ8051MLL-EVAL BOARD EVALUATION FOR KSZ8051MLL Datasheet
576-3862-ND KSZ8031RNL-EVAL BOARD EVALUATION FOR KSZ8031RNL Datasheet
576-3295-ND KSZ8041TL-EVAL BOARD EVALUATION KSZ8041TL Datasheet
576-3863-ND KSZ8041RNL-EVAL BOARD EVALUATION FOR KSZ8041RNL Datasheet
576-1621-ND KSZ8041NL-EVAL BOARD EVALUATION FOR KSZ8041NL Datasheet