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NE521 Datasheet(PDF) 2 Page - ON Semiconductor

Part # NE521
Description  High?뭆peed Dual?묭ifferential Comparator/Sense Amp
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NE521 Datasheet(HTML) 2 Page - ON Semiconductor

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NE521
http://onsemi.com
2
LOGIC FUNCTION TABLE
VID (A+, B)
Strobe S
Strobe G
Output (Y)
VID v −VOS
H
H
L
−VOS < VID < VOS
H
H
Undefined
VID w VOS
H
H
H
X
L
X
H
X
X
L
H
Figure 1. Block Diagram
(12)
INPUT 2A
(11)
INPUT 2B
(9)
OUTPUT 3Y
(8)
STROBE 2G
(1)
(2)
(4)
(5)
INPUT 1A
INPUT 1B
OUTPUT 1Y
STROBE 1G
(6)
STROBE S
Q11
V+
14
2
+
1
V−
13
R2
R1
Q2
Q1
Q4
Q3
D7
Q9
R4
Q10
Q8
R5
R3
D6
R17
Q6
R16
Q5
Q13
R15
R6
R9
Q19
Q7
R14
5
D2
Q25
R20
6
R21
Q26
Q30
R24
R23
Q27
Q29
Q28
R25
7
12
+
11
V+
R8
Q16
Q15
Q14
R12
R11
Q18
R10
Q17
D4
Q20
Q21
R7
D5
Q22
Q23
R18
R19
D3
8
Q24
Q31
R26
Q32
R27
R28
Q36
R29
R30
Q32
Q35
9
Q34
R34
R22
4
Figure 2. Equivalent Schematic
D1


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