Product Summary

Operating with a 2.5V core to meet low-voltage and low-power requirements, the KSZ8721SL is Physical Layer Transceivers that use MII and RMII interfaces to transmit and receive data. It contain 10BASE-T Physical Medium Attachment (PMA), Physical Medium Dependent (PMD), and Physical Coding Sub-layer (PCS) functions. The KS8721BL/SL also have on-chip 10BASE-T output filtering. This eliminates the need for external filters and allows a single set of line magnetics to be used to meet requirements for both 100BASE-TX and 10BASE-T. The KSZ8721SL automatically configures itself for 100 or 10Mbps and full- or half-duplex operation, using an on-chip auto-negotiation algorithm. It is the ideal physical layer transceiver for 100BASE-TX/10BASE-T applications.

Parametrics

Absolute maximum ratings:(1)Storage Temperature (TS): –55℃ to +150℃; (2)Supply Referenced to GND: –0.5V to +4.0V; (3)All Pins: –0.5V to +4.0V; (4)Supply Voltage (VDD_PLL, VDD_TX, VDD_RXC, VDD_RCV, VDDC): +2.5V; (5)Supply Voltage (VDDIO): +3.3V; (6)Ambient Temperature (TA) Commercial: 0℃ to +70℃; (7)Industrial: –40℃ to +85℃; (8)Package Thermal Resistance LQFP (θJA) No Airflow: 83.56℃/W; (9)Package Thermal Resistance SSOP (θJA) No Airflow: 75.19℃/W.

Features

Features: (1)Single chip 100BaseTX/100BaseFX/10BaseT physical layer solution; (2)2.5V CMOS design, power consumption <200mW (excluding output driver current ); (3)Fully compliant to IEEE 802.3u standard; (4)Supports Media Independent Interface (MII) and Reduced MII (RMII); (5)Supports 10BaseT, 100BaseTX and 100BaseFX with Far_End_Fault Detection; (6)Supports power down mode and power saving mode; (7)Configurable through MII serial management ports or via external control pins; (8)Supports auto-negotiation and manual selection.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
KSZ8721SL
KSZ8721SL

IC TXRX PHY 10/100 3.3V 48-SSOP
Data Sheet
0-1: $2.31
1-25: $1.85
25-100: $1.44
100-250: $1.36
250-500: $1.33
KSZ8721SL TR
KSZ8721SL TR

IC TXRX PHY 10/100 3.3V 48SSOP
Data Sheet
0-1: $2.31
1-25: $1.85
25-100: $1.44
100-250: $1.36
250-500: $1.33
KSZ8721SLA4 TR
KSZ8721SLA4 TR

TRANSCEIVER 10/100 3.3V 48-SSOP
Data Sheet
Negotiable 
KSZ8721SLA4
KSZ8721SLA4

TXRX 10/100 3.3V 48-SSOP
Data Sheet
Negotiable 
KSZ8721SLI
KSZ8721SLI

IC TXRX PHY 10/100 3.3V 48-SSOP
Data Sheet
0-1: $3.04
1-25: $2.43
25-100: $1.89
100-250: $1.80
250-500: $1.76
KSZ8721SL-EVAL
KSZ8721SL-EVAL

BOARD EVALUATION FOR KSZ8721SL
Data Sheet
0-6: $79.00
KSZ8721SLI TR
KSZ8721SLI TR

IC TXRX PHY 10/100 3.3V 48SSOP
Data Sheet
0-1000: $1.89