LAN8741AI-EN datasheet(14/106 Pages) MICROCHIP

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LAN8741A/LAN8741Ai

DS00001988A-page 14

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2.2

Buffer Types

TABLE 2-9:

BUFFER TYPES

Buffer Type

Description

Schmitt-triggered input

O12

Output with 12 mA sink and 12 mA source

VIS

Variable voltage Schmitt-triggered input

VO8

Variable voltage output with 8 mA sink and 8 mA source

VOD8

Variable voltage open-drain output with 8 mA sink

50 µA (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.

50 µA (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

Note:

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

buffer information.

Note:

Sink and source capabilities are dependent on the VDDIO voltage. Refer to Section 5.1, "Absolute Maxi-

mum Ratings*" for additional information.

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