NJM#2078D NJR, NJM#2078D Datasheet - Page 4

• Manufacturer Part Number: NJM#2078D
• Description: Supervisory Circuits _
• Manufacturer: NJR

Specifications of NJM#2078D

• Product Category: Supervisory Circuits
• Rohs: yes
• Number Of Voltages Monitored: 2
• Monitored Voltage: 1.2 V
• Undervoltage Threshold: 1.15 V
• Overvoltage Threshold: 1.25 V
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Supply Voltage - Max: 21 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: DIP-8
• Maximum Power Dissipation: 500 mW
• Minimum Operating Temperature: - 40 C
• Factory Pack Quantity: 50
• Supply Current (typ): 600 uA

■ OPERATION PRINCIPLE
- 4 -
Equation
V
V
IH
IL
(
(
A
A
)
)
=
=

 


 

1
1
+
+
R
R
R
1
2
2
R

 

//
1
V
R
R
3

 

V
R
−
R
R
3
1
V
+
V
V
IH
IL
B (
B (
)
)
=
=

 


 

1
1
+
+
R
R
R
5
4
5
R
//

 

4
V
R
R
6

 

V
R
(note)V
R
R
2
5
//
//
R
R
R
3
6
≒V
=
=
R
R
H
R
R
(≒1.20V)
2
5
2
5
+
+
R
R
R
R
3
6
3
6
Ver.2003-12-09