LAN8820 datasheet(12/83 Pages) MICROCHIP

12 / 83 page

LAN8820/LAN8820I

DS00001871B-page 12

 2009-2015 Microchip Technology Inc.

2.1

Buffer Types

Note 1:

The digital signals are not 5V tolerant. Refer to Section 5.1, "Absolute Maximum Ratings*," on page 60 for

additional buffer information.

TABLE 2-9:

BUFFER TYPES

Buffer Type

Description

Schmitt-triggered input

Output with 6mA sink and 6mA source

Output with 8mA sink and 8mA source

50uA (typical) internal pull-up. Unless otherwise noted in the pin description, internal pull-

ups are always enabled.

Note:

Internal pull-up resistors prevent unconnected inputs from floating. Do not rely on

internal resistors to drive signals external to the device. When connected to a load

that must be pulled high, an external resistor must be added.

50uA (typical) internal pull-down. Unless otherwise noted in the pin description, internal

pull-downs are always enabled.

Note:

Internal pull-down resistors prevent unconnected inputs from floating. Do not rely

on internal resistors to drive signals external to the device. When connected to a

load that must be pulled low, an external resistor must be added.

Analog input

AIO

Analog bi-directional

ICLK

Crystal oscillator input pin

OCLK

Crystal oscillator output pin

Power pin

LAN8820 Datasheet(PDF) 12 Page - Microchip Technology