555_ST.pdf

(659 KB) Pobierz
112690602 UNPDF
®
NE555
SA555 - SE555
GENERAL PURPOSE SINGLE BIPOLAR TIMERS
. TIMING FROM MICROSECONDS TO HOURS
OPERATING
FREQUENCY
. OPERATES IN BOTH ASTABLE AND
MONOSTABLE MODES
. HIGH OUTPUT CURRENT CAN SOURCE OR
SINK 200mA
. ADJUSTABLE DUTY CYCLE
. TTL COMPATIBLE
. TEMPERATURE STABILITY OF 0.005%
PER o C
DESCRIPTION
The NE555 monolithic timing circuit is a highly stable
controller capable of producing accurate time delays
or oscillation. In the time delay mode of operation,
the time is precisely controlled by one external re-
sistor and capacitor. For a stable operation as an os-
cillator, the free running frequency and the duty cy-
cle are both accurately controlled with two external
resistors and one capacitor. The circuit may be trig-
gered and reset on falling waveforms, and the out-
put structure can source or sink up to 200mA. The
NE555 is available in plastic and ceramic minidip
package and in a 8-lead micropackage and in metal
can package version.
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
ORDER CODES
Part
Number
Temperature
Range
Package
N
D
NE555
0 o C, 70 o C
·
·
SA555
–40 o C, 105 o C
·
·
SE555
–55 o C, 125 o C
·
·
PIN CONNECTIONS (top view)
1
8
1 - GND
2 - Trigger
3 - Output
4 - Reset
5 - Control voltage
6 - Threshold
7 - Discharge
8 - V CC
2
7
3
6
4
5
July 1998
1/10
. MAXIMUM
. LOW TURN OFF TIME
GREATER THAN 500kHz
112690602.025.png
NE555/SA555/SE555
BLOCK DIAGRAM
V CC
+
5k
W
COMP
DISCHARGE
THRESHOLD
CONTROL VOLTAGE
R
FLIP-FLOP
5k W
Q
COMP
OUT
TRIGGER
S
INHIBIT/
5k W
RESET
S
S - 8086
SCHEMATIC DIAGRAM
CONTROL
VOLTAGE
OUTPUT
THRESHOLD
COMPARATOR
V CC
5
R1
4.7k W
R2
830 W
R3
4.7k W
R4
1k W
R8
5k W
R12
6.8k W
Q21
Q5
Q6
Q7
Q8
Q9
Q19
Q20
Q22
R13
R11
5k W
3.9k W
D1
3
R17
4.7k W
THRESHOLD
Q1
Q4
Q23
Q2
Q3
R9
5k W
R14
220 W
Q11 Q12
D2
Q24
TRIGGER
2
Q10
Q13
R16
100 W
Q16
Q18
R15
4.7k W
RESET
DISCHARGE
4
7
Q15
Q17
Q14
R5
10k W
R6
100k W
R7
100k W
R10
5k W
G N D
1
TRIGGER COMPARATOR
FLIP FLOP
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V cc
Supply Voltage
18
V
T oper
Operating Free Air Temperature Range
for NE555
for SA555
for SE555
0 to 70
–40 to 105
–55 to 125
o C
T j
Junction Temperature
150
o C
T stg
Storage Temperature Range
–65 to 150
o C
2/10
RESET
112690602.026.png 112690602.027.png 112690602.028.png
NE555/SA555/SE555
OPERATING CONDITIONS
Symbol
Parameter
SE555
NE555 - SA555
Unit
V CC
Supply Voltage
4.5 to 18
4.5 to 18
V
V th , V trig , V cl , V reset Maximum Input Voltage
V CC
V CC
V
ELECTRICAL CHARACTERISTICS
T amb = +25 o C, V CC = +5V to +15V (unless otherwise specified)
Symbol
Parameter
SE555
NE555 - SA555
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
I CC
Supply Current (R L
¥
) (- note 1)
mA
Low State
V CC = +5V
V CC = +15V
3
10
2
5
12
3
10
2
6
15
High State
V CC = 5V
Timing Error (monostable)
(R A = 2k to 100k
W
, C = 0.1
m
F)
Initial Accuracy - (note 2)
Drift with Temperature
Drift with Supply Voltage
0.5
30
0.05
2
100
0.2
1
50
0.1
3
%
ppm/
°
C
0.5
%/V
Timing Error (astable)
(R A , R B = 1k
W
to 100k
W
, C = 0.1
m
F,
V CC = +15V)
Initial Accuracy - (note 2)
Drift with Temperature
Drift with Supply Voltage
1.5
90
0.15
2.25
150
0.3
%
ppm/
°
C
%/V
V CL
Control Voltage level
V CC = +15V
V CC = +5V
9.6
2.9
10
3.33
10.4
3.8
9
2.6
10
3.33
11
4
V
V th
Threshold Voltage
V CC = +15V
V CC = +5V
9.4
2.7
10
3.33
10.6
4
8.8
2.4
10
3.33
11.2
4.2
V
I th
Threshold Current - (note 3)
0.1
0.25
0.1
0.25
m
A
V trig
Trigger Voltage
V CC = +15V
V CC = +5V
4.8
1.45
5
1.67
5.2
1.9
4.5
1.1
5
1.67
5.6
2.2
V
I trig
Trigger Current (V trig = 0V)
0.5
0.9
0.5
2.0
m
A
V reset Reset Voltage - (note 4)
0.4
0.7
1
0.4
0.7
1
V
I reset
Reset Current
mA
V reset = +0.4V
V reset = 0V
0.1
0.4
0.4
1
0.1
0.4
0.4
1.5
V OL
Low Level Output Voltage
V CC = +15V, I O(sink) = 10mA
I O(sink) = 50mA
I O(sink) = 100mA
I O(sink) = 200mA
V CC = +5V, I O(sink) = 8mA
I O(sink) = 5mA
0.1
0.4
2
2.5
0.1
0.05
0.15
0.5
2.2
0.1
0.4
2
2.5
0.3
0.25
0.25
0.75
2.5
V
0.25
0.2
0.4
0.35
V OH
High Level Output Voltage
V CC = +15V, I O(source) = 200mA
I O(source) = 100mA
V CC = +5V, I O(source) = 100mA
V
12.5
13.3
3.3
12.5
13.3
3.3
13
3
12.75
2.75
Notes : 1. Supply current when output is high is typically 1mA less.
2. Tested at V CC = +5V and V CC = +15V.
3. This will determine the maximum value of R A + R B for +15V operation the max total is R = 20M
W
and for 5V operation
the max total R = 3.5M
W
.
3/10
112690602.001.png 112690602.002.png
NE555/SA555/SE555
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
SE555
NE555 - SA555
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
I dis(off) Discharge Pin Leakage Current
(output high) (V dis = 10V)
20
100
20
100
nA
V dis(sat) Discharge pin Saturation Voltage
(output low) - (note 5)
V CC = +15V, I dis = 15mA
V CC = +5V, I dis = 4.5mA
mV
180
80
480
200
180
80
480
200
t r
t f
Output Rise Time
Output Fall Time
100
100
200
200
100
100
300
300
ns
s
Notes : 5. No protection against excessive Pin 7 current is necessary, providing the package dissipation rating will not be exceeded.
6. Time mesaured from a positive going input pulse from 0 to 0.8x V CC into the threshold to the drop from high to low of the
output trigger is tied to treshold.
t off
Turn off Time - (note 6) (V reset = V CC )
0.5
0.5
m
Figure 1 : Minimum Pulse Width Required for
Trigering
Figure 2 : Supply Current versus Supply Voltage
Figure 3 : Delay Time versus Temperature
Figure 4 : Low Output Voltage versus Output
Sink Current
4/10
112690602.003.png 112690602.004.png 112690602.005.png 112690602.006.png 112690602.007.png 112690602.008.png 112690602.009.png
NE555/SA555/SE555
Figure 5 : Low Output Voltage versus Output
Sink Current
Figure 6 : Low Output Voltage versus Output
Sink Current
Figure 7 : High Output Voltage Drop versus
Output
Figure 8 : Delay Time versus Supply Voltage
Figure 9 : Propagation Delay versus Voltage
Level of Trigger Value
5/10
112690602.010.png 112690602.011.png 112690602.012.png 112690602.013.png 112690602.014.png 112690602.015.png 112690602.016.png 112690602.017.png 112690602.018.png 112690602.019.png 112690602.020.png 112690602.021.png 112690602.022.png 112690602.023.png 112690602.024.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin