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參數資料
| 型號： | C397 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Single General Purpose Voltage Comparator |
| 中文描述： | 單通用電壓比較器 |
| 文件頁數： | 1/9頁 |
| 文件大?。?/td> | 199K |
| 代理商： | C397 |
LM397
Single General Purpose Voltage Comparator
General Description
The LM397 is a single voltage comparator with an input
common mode that includes ground. The LM397 is designed
to operate from a single 5V to 30V power supply or a split
power supply. Its low supply current is virtually independent
of the magnitude of the supply voltage.
The LM397 features an open collector output stage. This
allows the connection of an external resistor at the output.
The output can directly interface with TTL, CMOS and other
logic levels, by tying the resistor to different voltage levels
(level translator).
The LM397 is available in space saving SOT23-5 package
and pin compatible to TI’s TL331, single differential com-
parator.
Features
(T
A
= 25C. Typical values unless otherwise specified).
n
SOT23-5 package
n
Industrial operating range
n
Single or dual power supplies
n
Wide supply voltage range
n
Low supply current
n
Low input bias current
n
Low input offset current
n
Low input offset voltage
n
Response time
n
Input common mode voltage
40C to +85C
5V to 30V
300μA
7nA
±
1nA
±
2mV
440ns (50mV overdrive)
0 to V
S
- 1.5V
Applications
n
A/D converters
n
Pulse, square wave generators
n
Peak detector
n
Industrial applications
Connection Diagram
SOT23-5
20022108
Top View
Typical Circuit
Ordering Information
Package
5-Pin SOT-23
Part Number
LM397MF
LM397MFX
Package Marking
C397
Transport Media
1k Units Tape and Reel
3k Units Tape and Reel
NSC Drawing
MF05A
20022109
FIGURE 1. Inverting Comparator with Hysteresis
June 2001
L
2001 National Semiconductor Corporation
DS200221
www.national.com
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