EL2252 Elantec Semiconductor, EL2252 Datasheet - Page 9

• Manufacturer Part Number: EL2252
• Description: Dual 50 MHz Comparator/Pin Receiver
• Manufacturer: Elantec Semiconductor

Simplified Schematic
Applications Information
The EL2252 is very easy to use and is relatively
oscillation-free but a few items must be attend-
ed The first is that both supplies should be by-
passed closely 1 F tantalums are very good and
no additional smaller capacitors are necessary
The EL2252 requires V
serve AC performance V
for a TTL output swing 8V for CMOS outputs
The input voltage range will be referred to the
more positive of the two inputs That is bringing
an input as negative as V
lems it’s the other input’s level that must be con-
sidered The typical input range is
b
a
to be at least 5V to pre-
b
must be at least 6V
will not cause prob-
a
Dual 50 MHz Comparator Pin Receiver
13
One Comparator
b
12V
9
when the supplies are
ishes over temperature and varies with process-
ing it is wise to set power supplies such that V
is 5V more positive than the most positive input
signal and V
most negative input
encompass all CMOS and ECL logic inputs If
the input exceeds the device’s common-mode in-
put capability the EL2252 propagation delay
and input bias current will increase Fault cur-
rents will occur with inputs a diode below V
above V
even when fault currents within the absolute
maximum ratings
a
No damage nor V
b
more negative than 6V below the
g
g
12V supplies will easily
EL2252C
15V This range dimin-
OS
shift will occur
2252 – 19
b
a
or