VOLTAGE DETECTOR GENERAL DESCRIPTION NJM2078 dual comparator incl

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VOLTAGE DETECTOR GENERAL DESCRIPTION NJM2078 dual comparator incl

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NJM2078
VOLTAGE DETECTOR
GENERAL DESCRIPTION NJM2078 dual comparator including precise reference circuit. Output stages open collector used wired NJM2078 hysterisis terminals. less operating current, NJM2078 suitable voltage detection decreased power supply memory stack abnormal voltage. FEATURES Operating Current (250µA typ.) Stabled Internal Reference Voltage (1.20V typ.) Hysterisis Function with Resistors Package Outline DIP8, DMP8 Bipolar Technology CONFIGURATION PACKAGE OUTLINE
NJM2078D
NJM2078M
NJM2078D NJM2078M EQUIVALENT CIRCUIT
Ver.2003-12-09
NJM2078
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Output Voltage Output Current Input Voltage Power Dissipation SYMBOL
(Ta=25°C)
RATINGS -0.3 +6.5 (DIP8) (DMP8) UNIT
Topr Tstg
Operating Temperature Range Storage Temperature Range
+125
Ver.2003-12-09
NJM2078
ELECTRICAL CHARACTERISTICS
PARAMETER Operating Current SYMBOL ICCL ICCH Threshold Voltage Threshold Voltage Deviation Operating Voltage VTH1 VTH2
(V+=5V, Ta=25°C)
CONDITION =20V, VIL=1.0V =20V, VIH=1.5V IO=2mA, VO=1V 2.5VV 5.5V 4.5VV IO(A)=4.5mA, VO(A)=2V, IH(A)=20µA, VH(A)=3V IO(B)=3mA, VO(B)=2V, IH(B)=3mA, VH(B)=2V -20°CTa70°C
MIN. 1.15
TYP. 1.20 ±0.05
MAX. 1.25
UNIT
Offset Voltage Between Normal Output Hysterisis Output
Threshold Voltage Temperature Coefficient Threshold Voltage Difference Between Channels Input Current Output Leak Current Hysterisis Output Leak Current IHL(A) IHH(B) Output Sink Current IOL(A) IOL(B) Hysterisis Current IHH(A) IHL(B) Output Saturation Voltage VOL(A) VOL(B) Hysterisys Output Saturation Voltage VHH(A) VHL(B) Delay Time tPHL tPLH
IIL=1.0V IIH=1.5V VO=20V, VIL=1.0V =20V, VH(A)=0V, VIL=1.0V VH(B)=20V, VIH=1.5V VO=1.0V, VIH=1.5V VO=1.0V, VIH=1.5V VH=0V, VIH=1.5V VH=1.0V, VIL=1.0V IO=4.5mA, VIH=1.5V IO=3.0mA, VIH=1.5V IH=20µA, VIH=1.5V IH=3.0mA, VIL=1.0V RL=5k RL=5k
Ver.2003-12-09
NJM2078
OPERATION PRINCIPLE
Equation
VIH( VIL( VIH(B VIL(B
(note)VRVH(1.20V)
Ver.2003-12-09
NJM2078
TYPICAL APPLICATION Hysterisis
VIN(A) VIL(A)
Each equation calculated without considering saturation voltage. necessary compensate saturation voltage lead conditions, precisely.
VIN(B) VIL(B)
Detection Abnormal Supply Voltage
Hysterisis Positive feedback from (ref.1).
Note V+2.5V
Ver.2003-12-09
NJM2078
Detection Abnormal Operating Voltage
Note V+L2.5V
Programmable Zener
channel independently.
Reset Circuit Decreased Operating Voltage Comparate Voltage hysterisis width adjustabel Roughly. Power-on reset time tRST (roughly) tRST -C1R4 Transistor Recommended Rapid Signal care remained charge affects tRST Reverse polarity output Open collector.
Ver.2003-12-09
NJM2078
TYPICAL CHARACTERISTICS Operating Current Hysterisis Current
Output Saturation Voltage
Output Saturation Voltage
Threshold Voltage
Threshold Voltage
Ver.2003-12-09
NJM2078
TYPICAL CHARACTERISTICS (Refer Application Reset Circuit Decreased Supply Voltage) Characteristics Pulse Response
[CAUTION] specifications this databook only given information without guarantee regards either mistakes omissions. application circuits this databook described only show representative usages product intended guarantee permission right including industrial rights.
Ver.2003-12-09

VOLTAGE DETECTOR GENERAL DESCRIPTION NJM2078 dual comparator incl

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