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PDF LM139A Data sheet ( Hoja de datos )
| Número de pieza | LM139A | |
| Descripción | Low Power Low Offset Voltage Quad Comparators | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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March 2004
LM139/LM239/LM339/LM2901/LM3302
Low Power Low Offset Voltage Quad Comparators
General Description
The LM139 series consists of four independent precision
voltage comparators with an offset voltage specification as
low as 2 mV max for all four comparators. These were
designed specifically to operate from a single power supply
over a wide range of voltages. Operation from split power
supplies is also possible and the low power supply current
drain is independent of the magnitude of the power supply
voltage. These comparators also have a unique characteris-
tic in that the input common-mode voltage range includes
ground, even though operated from a single power supply
voltage.
Application areas include limit comparators, simple analog to
digital converters; pulse, squarewave and time delay gen-
erators; wide range VCO; MOS clock timers; multivibrators
and high voltage digital logic gates. The LM139 series was
designed to directly interface with TTL and CMOS. When
operated from both plus and minus power supplies, they will
directly interface with MOS logic — where the low power
drain of the LM339 is a distinct advantage over standard
comparators.
Features
n Wide supply voltage range
n LM139/139A Series
2 to 36 VDC or ±1 to ±18 VDC
n LM2901:
2 to 36 VDC or ±1 to ±18 VDC
n LM3302:
2 to 28 VDC or ±1 to ±14 VDC
n Very low supply current drain (0.8 mA) — independent
of supply voltage
n Low input biasing current:
25 nA
n Low input offset current:
±5 nA
n Offset voltage:
±3 mV
n Input common-mode voltage range includes GND
n Differential input voltage range equal to the power
supply voltage
n Low output saturation voltage:
250 mV at 4 mA
n Output voltage compatible with TTL, DTL, ECL, MOS
and CMOS logic systems
Advantages
n High precision comparators
n Reduced VOS drift over temperature
n Eliminates need for dual supplies
n Allows sensing near GND
n Compatible with all forms of logic
n Power drain suitable for battery operation
One-Shot Multivibrator with Input
Lock Out
© 2004 National Semiconductor Corporation DS005706
00570612
www.national.com
1 page  
Typical Performance Characteristics LM139/LM239/LM339, LM139A/LM239A/LM339A, LM3302
Supply Current
Input Current
00570634
Output Saturation Voltage
00570635
Response Time for Various Input Overdrives
— Negative Transition
00570636
Response Time for Various Input Overdrives
— Positive Transition
00570637
00570638
5
www.national.com
5 Page 
Typical Applications (V+= 15 VDC) (Continued)
Time Delay Generator
Non-Inverting Comparator with Hysteresis
00570614
Inverting Comparator with Hysteresis
00570618
11
00570619
www.national.com
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet LM139A.PDF ] | |
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