LMV7235/LMV7239 45 nsec, Ultra Low Power, Low Voltage, Rail-to-Rail Input Comparator with
Open-Drain/Push-Pull Output
July 2, 2008
LMV7235/LMV7239
45 nsec, Ultra Low Power, Low Voltage, Rail-to-Rail Input
Comparator with Open-Drain/Push-Pull Output
General Description
The LMV7235/LMV7239 are ultra low power, low voltage, 45
nsec comparators. They are guaranteed to operate over the
full supply voltage range of 2.7V to 5.5V. These devices
achieve a 45 nsec propagation delay while consuming only
65碌A of supply current at 5V.
The LMV7235/LMV7239 have a greater than rail-to-rail com-
mon mode voltage range. The input common mode voltage
range extends 200mV below ground and 200mV above sup-
ply, allowing both ground and supply sensing.
The LMV7235 features an open drain output. By connecting
an external resistor, the output of the comparator can be used
as a level shifter.
The LMV7239 features a push-pull output stage. This feature
allows operation without the need of an external pull-up re-
sistor.
The LMV7235/LMV7239 are available in the 5-Pin SC70 and
5-Pin SOT23 packages, which are ideal for systems where
small size and low power is critical.
Features
(V
S
= 5V, T
A
= 25掳C, Typical values unless otherwise speci-
fied)
45 nsec
鈻?/div>
Propagation delay
65碌A
鈻?/div>
Low supply current
鈻?/div>
Rail-to-Rail input
鈻?/div>
Open drain and push-pull output
鈻?/div>
Ideal for 2.7V and 5V single supply applications
鈻?/div>
Available in space saving packages
鈥?/div>
5-pin SOT23
鈥?/div>
5-pin SC70
Applications
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
Portable and battery powered systems
Scanners
Set top boxes
High speed differential line receiver
Window comparators
Zero-crossing detectors
High speed sampling circuits
Typical Application
10135902
Crystal Oscillator
漏 2008 National Semiconductor Corporation
101359
www.national.com
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