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PDF LMV393 Data sheet ( Hoja de datos )
| Número de pieza | LMV393 | |
| Descripción | General Purpose / Low Voltage / TinyPack Comparators | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LMV393 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
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August 1999
LMV331 Single / LMV393 Dual / LMV339 Quad
General Purpose, Low Voltage, TinyPack Comparators
General Description
The LMV393 and LMV339 are low voltage (2.7-5V) versions
of the dual and quad comparators, LM393/339, which are
specified at 5-30V. The LMV331 is the single version, which
is available in space saving SC70-5 and SOT23-5 packages.
SC70-5 is approximately half the size of SOT23-5.
The LMV393 is available in 8-pin SOIC and 8-pin MSOP. The
LMV339 is available in 14-pin SOIC and 14-pin TSSOP.
The LMV331/393/339 is the most cost-effective solution
where space, low voltage, low power and price are the pri-
mary specification in circuit design for portable consumer
products. They offer specifications that meet or exceed the
familiar LM393/339 at a fraction of the supply current.
The chips are built with National’s advanced Submicron
Silicon-Gate BiCMOS process. The LMV331/393/339 have
bipolar input and output stages for improved noise perfor-
mance.
Features
(For 5V Supply, Typical Unless Otherwise Noted)
n Space Saving SC70-5 Package (2.0 x 2.1 x 1.0
mm)
n Space Saving SOT23-5 Package (3.00 x 3.01 x
1.43 mm)
n Guaranteed 2.7V and 5V Performance
n Industrial Temperature Range
−40˚C to +85˚C
n Low Supply Current
60µA/Channel
n Input Common Mode Voltage Range Includes Ground
n Low Output Saturation Voltage
200 mV
Applications
n Mobile Communications
n Notebooks and PDA’s
n Battery Powered Electronics
n General Purpose Portable Device
n General Purpose Low Voltage Applications
Connection Diagrams
5-Pin SC70-5/SOT23-5
14-Pin SO/TSSOP
DS100080-1
Top View
8-Pin SO/MSOP
Top View
DS100080-3
DS100080-2
Top View
© 1999 National Semiconductor Corporation DS100080
www.national.com
1 page  
Typical Performance Characteristics Unless otherwise specified, VS = +5V, single supply, TA = 25˚C
Supply Current vs
Supply Voltage Output High
(LMV331)
Supply Current vs
Supply Voltage Output Low
(LMV331)
Output Voltage vs
Output Current at 5V Supply
Output Voltage vs
Output Current
at 2.7 Supply
DS100080-34
DS100080-33
Input Bias Current vs
Supply Voltage
DS100080-37
Response Time vs
Input Overdrives
Negative Transition
Response Time for
Input Overdrive
Positive Transition
DS100080-38
DS100080-36
Response Time vs
Input Overdrives
Negative Transition
Response Time for
Input Overdrive
Positive Transition
DS100080-42
DS100080-43
DS100080-41
DS100080-40
5 www.national.com
5 Page 
Application Circuits (Continued)
Driving CMOS and TTL
The comparator’s output is capable of driving CMOS and
TTL Logic circuits.
DS100080-5
FIGURE 10. Driving CMOS
FIGURE 12. AND Gate
DS100080-11
OR Gates
A three input OR gate is achieved from the basic AND gate
simply by increasing the resistor value connected from the
inverting input to Vcc, thereby reducing the reference volt-
age.
A logic ″1″ at any of the inputs will produce a logic ″1″ at the
output.
FIGURE 11. Driving TTL
DS100080-6
AND Gates
The comparator can be used as three input AND gate. The
operation of the gate is as follow:
The resistor divider at the inverting input establishes a refer-
ence voltage at that node. The non-inverting input is the sum
of the voltages at the inputs divided by the voltage dividers.
The output will go high only when all three inputs are high,
casing the voltage at the non-inverting input to go above that
at inverting input. The circuit values shown work for a ″0″
equal to ground and a ″1″ equal to 5V.
The resistor values can be altered if different logic levels are
desired. If more inputs are required, diodes are recom-
mended to improve the voltage margin when all but one of
the inputs are high.
FIGURE 13. OR Gate
DS100080-10
ORing the Output
By the inherit nature of an open collector comparator, the
outputs of several comparators can be tied together with a
pull up resistor to Vcc. If one or more of the comparators out-
puts goes low, the output Vo will go low.
11 www.national.com
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet LMV393.PDF ] | |
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