COM20019I(2006) View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

COM20019I
(Rev.:2006)

Low Cost ARCNET (ANSI 878.1) Controller with 2K x 8 On-Board RAM

SMSC -> Microchip 

Low Cost ARCNET (ANSI 878.1) Controller with 2K x 8 On-Board RAM

CAPACITANCE (TA = 25°C; fC = 1MHz; VDD = 0V)

Output and I/O pins capacitive load specified as follows:

PARAMETER

SYMBOL MIN TYP

Input Capacitance

Output Capacitance 1

(All outputs except

XTAL2, nPULSE1 in

Push/Pull Mode)

Output Capacitance 2

(nPULSE1, in BackPlane

Mode Only - Open

Drain)

CIN

COUT1

COUT2

MAX

5.0

45

400

UNIT

pF

pF

pF

COMMENT

Maximum

Capacitive Load

which can be

supported by each

output.

AC Measurements are taken at the following points:

2.4V

1.4V

0.4V

2.4V

1.4V

0.4V

Inputs:

t

50%

t

50%

2.0V

0.8V

2.0V

0.8V

Outputs:

t

t

Inputs are driven at 2.4V for logic "1" and 0.4 V for logic "0" except XTAL1 pin.

Outputs are measured at 2.0V min. for logic "1" and 0.8V max. for logic "0".

Figure 7.1 - AC MEASUREMENTS

SMSC COM20019I

Page 47

DATASHEET

Rev. 03-07-06

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