Product Summary

Operating with a 2.5V core to meet low-voltage and low-power requirements, the KSZ8721BLI is a 10BASE-T/100BASE-TX/FX Physical Layer Transceiver that uses MII and RMII interfaces to transmit and receive data. The KSZ8721BLI contains 10BASE-T Physical Medium Attachment (PMA), Physical Medium Dependent (PMD), and Physical Coding Sub-layer (PCS) functions. The KSZ8721BLI also has on-chip 10BASE-T output filtering.

Parametrics

KSZ8721BLI 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.

Features

KSZ8721BLI features: (1)Single chip 100BASE-TX/100BASE-FX/10BASE-T physical layer solution ; (2)2.5V CMOS design; 2.5/3.3V tolerance on I/O ; (3)3.3V single power supply with built-in voltage regulator; Power consumption <340mW (including output driver current) ; (4)Fully compliant to IEEE 802.3u standard ; (5)Supports MII and Reduced MII (RMII) ; (6)Supports 10BASE-T, 100BASE-TX, and 100BASE-FX with Far_End_Fault Detection ; (7)Supports power-down and power-saving modes ; (8)Configurable through MII serial management ports or via external control pins.

Diagrams

KSZ8721BLI block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
KSZ8721BLI
KSZ8721BLI

IC TXRX PHY 10/100 3.3V 48LQFP
Data Sheet
0-1: $3.19
1-25: $2.55
25-100: $2.15
100-250: $2.07
250-500: $2.03
KSZ8721BLI TR
KSZ8721BLI TR

TXRX PHY 10/100 2.3.3/5V 48-LQFP
Data Sheet
0-1000: $2.00
KSZ8721BLIA4 TR
KSZ8721BLIA4 TR

TRANSCEIVER 10/100 3.3V 48-LQFP
Data Sheet
Negotiable 
KSZ8721BLIA4
KSZ8721BLIA4
Micrel Inc
TRANSCEIVER 10/100 3.3V 48-LQFP
Data Sheet
1-250: $1.87