KSZ8721BLI vs KSZ8721BL Comparison

Detailed side-by-side comparison of KSZ8721BLI by Microchip Technology and KSZ8721BL by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.

Microchip Technology
KSZ8721BLI KSZ8721BLI - 3.3V 10/100 Ethernet PHY | Microchip

KSZ8721BLI - 3.3V 10/100 Ethernet PHY | Microchip

KSZ8721BLI ✓ Active
Microchip Technology
KSZ8721BL KSZ8721BL - 100Mbps Ethernet PHY | Microchip | LQFP-48

KSZ8721BL - 100Mbps Ethernet PHY | Microchip | LQFP-48

KSZ8721BL ✓ Active

Specification Comparison

Parameter KSZ8721BLI KSZ8721BL
Brand Microchip Technology Microchip Technology
Category Interface ICs Interface ICs
Lifecycle Status Active Active
Product Type 10/100BASE-TX/FX Ethernet physical-layer transceiver 10/100BASE-TX/FX MII physical-layer transceiver
Supply Voltage 3.3 V 3.3 V
Operating Voltage Range 2.5 V to 3.3 V —
Data Rate 10 Mbps and 100 Mbps 100 Mbps
Copper Media Support 10BASE-T and 100BASE-TX —
Fiber Media Support 100BASE-FX —
Host Interface MII and RMII MII and RMII
Number of Transceivers 1 —
Ethernet Standards IEEE 802.3 and IEEE 802.3u —
Auto Crossover MDI/MDI-X auto-crossover —
Package 48-LQFP, 7 x 7 mm 48-pin LQFP
Pin Count 48 pins —
Mounting Type Surface mount Surface mount
Industrial Temperature Range -40°C to +85°C —
RoHS Status Compliant [DATA_NEEDED: RoHS status]
REACH Status [DATA_NEEDED: REACH status] [DATA_NEEDED: REACH status]
AEC-Q100 Qualification [DATA_NEEDED: AEC-Q100 qualification status] [DATA_NEEDED: AEC-Q100 qualification]
Lead-Free Status [DATA_NEEDED: lead-free status] —
Halogen-Free Status [DATA_NEEDED: halogen-free status] —
Conflict Minerals Status [DATA_NEEDED: conflict-minerals status] —
Observed Unit Price $2.5389 as of 2026-10-30 —
Distributor Availability In stock at LCSC as of 2026-10-30 —
Core Voltage — 2.5 V
Ethernet Type — 10/100BASE-TX/FX
Operating Temperature Range — 0°C to +70°C
Supply Current — 151 mA
Number of Pins — 48
MDI/MDI-X — Automatic crossover supported
Power-Supply Architecture — 3.3 V single power supply with 2.5 V core
Media Support — 10BASE-T/100BASE-TX/100BASE-FX
Temperature Grade — Commercial
Interface Type — MII/RMII Ethernet interface

Datasheets & Resources

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