CONTEK NE558 Datasheet
NE558 LINEAR INTEGRATED CIRCUIT
QUAD TIMER
DESCRIPTION
The Contek NE558 is a monolithic quad timer which
can be used to produce four entirely independent
timing functions. The highly stable, general purpose
controller can be used in a monostable mode to
produce accurate time delays.
FEATURES
*Wide supply voltage: Vcc= 4.5V~15V
*100mA output current per-section
*Edge trigger without coupling capacitor
*Time period equals RC
*Output independent
APPLICATIONS
*Precision timing
*Quad one-shot
*Timing delay generation
*Sequential timing.
BLOCK DIAGRAM
SOP-16
DIP-16
CONTEK
Contek
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
1
NE558 LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS(Ta=25 C )
Supply Voltage Vcc 16 V
Power Dissipation Pd 600 mW
Lead Temperature(soldering 10
sec.)
Operating Temperature Topr -40~85
Storage Temperature Tstg -65~150
ELECTRICAL CHARACTERISTICS( Ta=25 C ,Vcc=5 to 15V, unless otherwise specified)
Supply Voltage Vcc 4.5 16 V
Supply Current Icc Vcc=15V,RL=15V 16 36 mA
Timing Error(T=RC)
Initial Accuracy ACCUR
PARAMETER SYMBOL VALUE UNIT
Tlead 300
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
RA=2KW to 100KW
C=1mF
25%
C
C
C
Drift with Temperature
Drift with Supply Voltage
Threshold Voltage( Note 1) VTH 0.63*Vcc V
Threshold Current ITH 15 Na
Trigger voltage Vtr Vcc=15V 0.8 1.5 2.4 V
Trigger Current Itr Vtr=0 5 100
Reset Voltage(Note 2) Vrst Reset 0.8 1.5 2.4 V
Reset Current Irst Reset 5 100
Output Voltage( Note 3) VOL IL=10mA
Rise Time of Output tR IL=100mA 100 nSec
Fall Time of Output tF IL=100mA 100 300 nSec
Discharge Leakage Current ILKG 10 500 nA
Note 1: The trigger functions only on the falling edge of the trigger pulse only after previously being high. After
reset, the trigger must be brought high and then low to implement triggering.
Note 2: For reset below 0.8V, output s set low and trigger inhibited.
Note 3: Output structure is open collector which requires a pull up resistor to Vcc to sink current. The output is
normally low sinking current.
Dt/DT
Dt/DVcc
IL=100mA
30 150
0.1 0.9 %/V
0.1
1
0.4
ppm/ C
mA
mA
V
2
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
2
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