3

SuperLite™

SY55855V

Micrel, Inc.

M9999-110705

hbwhelp@micrel.com or (408) 955-1690

FUNCTIONAL DESCRIPTION

NC

X

/X

NC

NC

X

/X

NC

X

/X

Establishing Static Logic Inputs

The true pin of an input pair is internally biased to ground

through a 75k

Ω resistor. The complement pin of an input

pair is internally biased halfway between V

by a voltage divider consisting of two 75k

Ω resistors. In this

way, unconnected inputs appear as logic zeros. To keep an

input at static logic zero at V

unconnected. For V

to V

input static logic one, connect the true input to V

the complement input unconnected. These are the only two

safe ways to cause inputs to be at a static value. In particular,

no input pin should be directly connected to ground. All NC

(no connect) pins should be unconnected.

Note 1.

X is either D0 or D1 input. /X is either /D0 or /D1 input.

Note 1.

X is either D0 or D1 input. /X is either /D0 or /D1 input.