CONTEK NE555 Datasheet
NE555 LINEAR INTEGRATED CIRCUIT
SINGLE TIMER
DESCRIPTION
The Contek NE555 is a highly stable timer
integrated circuit. It can be operated in Astable mode
and Monostable mode. With monostable operation, the
time delay is controlled by one external and one
capacitor. With a stable operation, the frequency and
duty cycle are accurately controlled with two external
resistors and one capacitor.
FEATURES
*High current driver capability(=200mA)
*Adjustable duty cycle
*Timing from mSec to Hours
*Turn off time less than 2mSec.
APPLICATIONS
*Precision timing
*Pulse generation
*Time delay generation
BLOCK DIAGRAM
SOP-8
DIP-8
CONTEK
Vcc
8 5 2
Control
Voltage
Trigger
Contek
Threshold
Reset
Thr.
6
Comp.
4
1
GND
Tri.
Comp.
Output
FlipFlop
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
3
Output
Dischage
7
1
NE555 LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS(Ta=25 C )
Supply Voltage Vcc 16 V
Power Dissipation Pd 600 mW
Lead Temperature Tlead 300
Operating Temperature Topr 0 to 70
Storage Temperature Tstg -65 to 150
ELECTRICAL CHARACTERISTICS( Ta=25 C ,Vcc=5 ~ 15V)
Supply voltage Vcc 4.5 16 V
Supply Current Icc
(Note 1)
Timing Error(monostable)
Initial Accurary(Note 2) ACCUR
Drift with Temperature
Drift with Supply Voltage
Timing Error(astable)
Initial Accurary(Note 2) ACCUR
Drift with Temperature
Drift with Supply Voltage
Control Voltage Vc Vcc=15V 9.0 10.0 11.0 V
Threshold Voltage VTH Vcc=15V 10.0 V
Threshold Current(Note 3) ITH 0.1 0.25
Trigger Voltage Vtr Vcc=5V 1.1 1.67 2.2 V
Trigger Current Itr Vtr=0 0.01 2.0
Reset Voltage Vrst 0.4 0.7 1.0 V
Reset Current Irst 0.1 0.4 mA
Low Output Voltage VOL Isink=50mA 0.3 0.75 V
High Output Voltage VOH Isource=100mA 12.75 13.3 V
Rise Time of Output tR 100 nSec
Fall Time of Output tF 100 nSec
Dischage Leakage Current ILKG 20 100 nA
PARAMETER SYMBOL VALUE UNIT
C
C
C
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Vcc=5V,RL=
Vcc=15V,RL=
RA=1k to 100kmW
Dt/DT C=0.1mF
Dt/DVcc
RA=1k to 100kmW
Dt/DT C=0.1mF
Dt/DVcc
Vcc=5V 2.6 3.33 4.0 V
Vcc=5V 3.33 V
Vcc=15V 4.5 5 5.6 V
Vcc=15V
Isink=10mA 0.06 0.25 V
Vcc=5V
Isink=5mA 0.05 0.35 V
Vcc=15V
Isource=200mA 12.5 V
Vcc=5V
Isource=100mA 2.75 3.3 V
36mA
7.5 15 mA
1.0 3.0 %
50
0.1 0.5 %/V
2.25 %
150
0.3 %/V
ppm/ C
ppm/ C
mA
mA
Note 1:Supply current when output is high is typically 1mA less at Vcc 5V.
Note 2:Tested at Vcc=5.0V and Vcc=15V.
Note 3:this will determine the maximum value of RA+RB for 15V operation, The maximum total is R=20M W, and
for 5V operation the maximum total is R=6.7M W.
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
2
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