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N
E555
Timing from Microseconds to Hours
Direct Replacement for Signetics NE555 Timer
Package
Applications
Pin
Configuration
TOP VIEW
Internal
Blo
c
k Di
gra
m
RESET can overrideTRI
GG
ER,which can override
THRESHOLD
1
BEIJING ESTEK ELECTRONICS CO.,LTD
Description
These devices are monolithic timing circuits capable of producing accurate time delays or oscillation.
Inthe time delaymode of operation, the timed interval is controlled by a single external resistor and capacit
or network. In the astable mode of operation, the frequency and duty cycle may
controlled with twoexternal resistors and a si ngle external capacitor.
be independently
Features
•
•
Astable or Monostable Operation
•
Adjustable Duty Cycle
•
TTL - Compatible Output Can Sink or Source Up to 200 mA
•
Temperature Stability of 0.005% per
•
o
C
DIP-8
SOP-8
•
Precision timing
•
Pulse generation
•
Sequential timing
•
Time delay generation
•
Pulse width modulation
•
Pulse position modulation
•
Missing pulse detector
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NE55
5
Absolute Maximum Ratings
(TA=25°C, unless otherwise specified)
Paramete
rMinMax
Units
SupplyVoltage, V
4.5
16
Input Voltage (control,reset, threshold and trigger)
VCCV
Output
Current,
I0±
200mAOperating
Free-Air
Temperature,
TA70
Storage Temperature Range,
T
S
TG
-65+150°C
Electrical characteristics
Initial E
rror
of
Timing Interval (Note 3)
monostable
(Note
5)
TA=25°C13
%
5
13
Temperature Coefficient
monostable
TA=MIN to MAX
50
150
ppm /°C
C=0.1µF.
BEIJING ESTEK ELECTRONICS CO.,LTD
2
CC
(TA=25°C, VCC=+5V to +15V, unless otherwise specified)
Operating Supply Voltage Range 4.5 16 V
Threshold Voltage Level VCC=15V 8.8 10 11.2 V
Threshold Current (Note 1) (see Note 1) 30 250 nA
Trigger Voltage Level VCC=15V 4.5 5 5.6 V
Trigger Current Trigger at 0V 0.5 2 µA
Reset Voltage Level 0.3 0.7 1 V
Reset Current Reset at V
Discharge Leakage Current 20 100 nA
Control Voltage Level VCC=15V 9 10 11 V
Low-level Output Voltage VCC=15V IOL=10mA 0.1 0.25
High-level Output Voltage VCC=15V IOL=-100mA 12.75 13.3
Supply Current Output Low, VCC=15V 10 15 mA
Parameter Test conditions
VCC=5V 2.4 3.3 4.2
VCC=5V 1.1 1.67 2.2
CC
Reset at 0V -0.4 -1.5
VCC=5V 2.6 3.3 4
VCC=5V IOL=5mA 0.25 0.35
VCC=5V IOL=-100mA 2.75 3.3
No Load VCC=5V 3 6
Output High, VCC=15V 9 13
No Load VCC=5V 2 5
(Note 2)
IOL=50mA 0.4 0.75
IOL=100mA 2 2.5
IOL=200mA 2.5
IOL=8mA 0.3 0.4
IOL=-200mA 12.5
Min Typ Max Units
0.1 0.4 mA
(Note4)
astable
of Timing Interval astable 150 500
Supply Voltage Sensitivity of monostable
Timing Interval astable 0.3 1
Output Pulse Rise Time
Output Pulse Fall Time 100 300
Note 1: This parameter influences the maximum value of the timing resistors RAand RBin the circuit on Fig 1. For example, when
VCC=5V, the maximum value is R=RA+RB=3.4 MΩ, and VCC=15V, the maximum value is 10 MΩ.
Note 2: For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
Note 3: Timing interval error is defined as the difference between the measured value and the average value of a random sample from
each process run.
Note 4: Values specified are for a device in a monostable circuit similar to Fig. 2, with component values as follow: RA=2KΩto 100 KΩ,
C=0.1µF.
Note 5: Values specified are for a device in an astable circuit similar to Fig. 1, with component values as follow: RA, RB=1KΩto 100 KΩ,
TA=25°C
CL=15pF, TA=25°C
0.1 0.5 %/V
100 300 ns
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NE555
Function Table
* Voltage levels sho
w
n are nominal
Typica
l ApplicationsCircui
t
F
igure1Circuit
for
astable
operatio
n
NOTEA:Bypassing
the
control
voltage
inputtoground
w
ithacapacitor
may
improve
operation.
This
shouldbeev
aluatedfor
individual
OrderingInformatio
n
ORDER
INNUMBERPACKAEMARKIN
NE555
DIP-8 / SOP
-8NE555
Address :
REV No:01
-
060823
3
BEIJING ESTEK ELECTRONICS CO.,LTD
Reset Trigger Voltage * Threshold Voltage * Output Discharge Switch
Low Irrelevant Irrelevant Low On
High < 1/3 V
High > 1/3 V
High > 1/3 V
CC
CC
CC
High High Off
> 2/3 V
< 2/3 V
CC
CC
Low On
As previously established
G
G
6A06--6A07
Rm 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing
Postalcode:100039
Tel: 86-010-58895780 / 81 / 82 / 83 / 84 Fax : 010-58895793
Http://www.estek.com.cn
Email:[email protected]
Figure 2. Circuitfor monostable operation
G
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