interface

LAN8720A

Every spec below is cited to the manufacturer datasheet. Pick your exact ordering code, compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the LAN8720A family does

The LAN8720A/LAN8720AI is a single-chip 10/100 Ethernet physical layer transceiver featuring reduced pin count RMII interface and high-performance Auto-MDIX support. It operates on a single 3.3V supply with a gain bandwidth of 1.3 MHz and supports LVCMOS I/O voltages from 1.6V to 3.6V. The device includes an integrated 1.2V regulator, loop-back modes, and wake-up detection for link status changes. Available in commercial and industrial temperature grades, it targets applications like set-top boxes, networked printers, routers, and embedded telecom systems. The part comes in a miniature 24-pin lead-free QFN or SQFN package measuring 4x4mm.

Next step
Start building with LAN8720A → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
01 — Key specifications

LAN8720A datasheet parameters

ParameterMinTypMaxConditionsSource
output voltage 2.2 V 2.5 V 2.8 V transmitter; 10BASE-T TRANSCEIVER CHARACTERISTICS Microchip datasheet, p. 57 — TABLE 5-6: 10BASE-T TRANSCEIVER CHARACTERISTICS
supply voltage range 1.62 V — 3.6 V VDDIO Microchip datasheet, p. 52
operating temperature — — 85 °C 300UW 25MHz CRYSTAL SPECIFICATIONS Microchip datasheet, p. 63 — TABLE 5-13: 300UW 25MHz CRYSTAL SPECIFICATIONS
input capacitance — — 2 pF Microchip datasheet, p. 55 — TABLE 5-3: NON-VARIABLE I/O BUFFER CHARACTERISTICS
propagation delay — 14 ns — RXD[1:0], RXER, CRS_DV output valid from rising edge of CLKIN (REF_CLK IN mode), max Microchip datasheet, p. 61 — TABLE 5-10: RMII TIMING VALUES (REF_CLK IN MODE)
data rate 10 bps — 100 bps Microchip datasheet, p. 4
fall time 3 ns — 5 ns 100BASE-TX TRANSCEIVER CHARACTERISTICS Microchip datasheet, p. 56 — TABLE 5-5: 100BASE-TX TRANSCEIVER CHARACTERISTICS
load capacitance 8 pF — 12 pF 100UW 25MHz CRYSTAL SPECIFICATIONS Microchip datasheet, p. 64 — TABLE 5-14: 100UW 25MHz CRYSTAL SPECIFICATIONS
channel count — 1 — Microchip datasheet, p. 9 — TABLE 2-4: ETHERNET PINS
driver count — 1 — Microchip datasheet, p. 9 — TABLE 2-4: ETHERNET PINS
receiver count — 1 — Microchip datasheet, p. 9 — TABLE 2-4: ETHERNET PINS
03 — Alternatives

Closest matches to LAN8720A

ADM2483BRW 3.8× lower operating temperature, 2.0× higher input capacitance, 1.6× higher supply voltage range
GM3485E 3.8× lower operating temperature, 1.6× higher supply voltage range, 1.4× higher propagation delay
SP3485E 2.4× lower operating temperature, 1.8× lower propagation delay, 1.3× higher supply voltage range
SN65HVD3082E 3.8× lower operating temperature, 3.5× higher input capacitance, 1.9× higher supply voltage range
GM3085E 9.1× higher propagation delay, 3.8× lower operating temperature, 1.6× higher supply voltage range
GM3232E 3.8× lower operating temperature, 1.4× lower propagation delay, 1.3× higher supply voltage range
PCA9509 7.8× higher propagation delay, 3.8× lower operating temperature, 1.6× higher supply voltage range
SP3485 5.0× higher propagation delay, 2.4× lower operating temperature, 1.3× higher supply voltage range
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