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NE555 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. NE555
Description  GENERAL PURPOSE SINGLE BIPOLAR TIMERS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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 2 page
background image
THRESHOLD
COMP
5k
5k
5k
TRIGGER
R
FLIP-FLOP
S
Q
DISCHARGE
OUT
INHIBIT/
RESET
RESET
COMP
S - 808 6
S
+
CONTROL VOLTAGE
V
CC
BLOCK DIAGRAM
OUTPUT
CONTROL
VOLTAGE
THRES HOLD
COMPARATOR
V
CC
R1
4.7k
R2
830
Q5
Q6
Q7
Q8
Q9
R3
4.7k
R4
1k
R8
5k
Q1
Q2
Q3
Q4
Q10
Q11 Q12
Q13
THRES HOLD
TRIGGER
RES ET
DISC HARGE
GN D
2
4
7
1
Q14
Q15
R5
10k
R6
100k
R7
100k
R10
5k
Q17
Q16
Q18
R9
5k
D2
R16
100
R15
4.7k
R14
220
Q24
Q23
R17
4.7k
3
Q22
Ρ13
D1
Q19
Q20
Q21
R1 2
6.8k
5
TRIGGER COMPARATOR
F LIP F LOP
R11
5k
3.9k
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
Vcc
Supply Voltage
18
V
Toper
Operating Free Air Temperature Range
for NE555
for SA555
for SE555
0to 70
–40 to 105
–55 to 125
oC
Tj
Junction Temperature
150
oC
Tstg
Storage Temperature Range
–65 to 150
oC
NE555/SA555/SE555
2/10




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