sy55851a Micrel Semiconductor, sy55851a Datasheet - Page 3

• Manufacturer Part Number: sy55851a
• Description: 2.5v/3v, 3.0ghz Cml Anygate Any Logic With 50ohm Or 100ohm Outputs
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
Establishing Static Logic Inputs
through a 75k
pair is internally biased to V
divider consisting of two 75k
functions necessitate an output to be connected to two
inputs, SY55851/A inputs have no internal terminations.
Typically, one resistor between the true and complement
input is all that is required, as per Figure 3. To keep an
Note 1.
M9999-110705
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FUNCTIONAL DESCRIPTION
The true pin of an input pair is internally biased to ground
Input is either A, B, S input, and /Input is either /A, /B, /S input.
Figure 1. Hard Wiring A Logic “1”
resistor. The complement pin of an input
V
NC
CC
Input
/Input
CC
/2 through an internal voltage
resistors. Since some logic
(1)
3
input at static logic zero at V
unconnected or tie the complement input to V
3.0V applications, connect the complement input to V
and leave the true input unconnected. To make an input
static logic one, connect the true input to V
the complement input unconnected. These are the only 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.
Figure 2. Hard Wiring A Logic “0”
VCC
NC
NC
NC
For V
For V
Input
/Input
Input
/Input
CC
CC
< 3.0V Applications
3.0V Applications
CC
3.0V, leave both inputs
CC
CC
(1)
, and leave
SuperLite™
. For V
SY55851A
SY55851
CC
CC
<