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Fairchild Semiconductor Electronic Components Datasheet

KA558B Datasheet

Quad Timer

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KA558/KA558B
Quad Timer
Features
• Wide Supply Voltage Range: 4.5V To 16V
• 100 mA Output Current Per Section
• Edge Triggered Without Coupling Capacitor
• Time Period Equals RC
• Output independent Of Trigger Conditions
Applications
• Quad One-Shot
• Sequential Timing
• Precision Timing
• Time Delay Generation
Internal Block Diagram
www.fairchildsemi.com
Description
The KA558/KA558B series are monolithic Quad Timers
which can be used to produce four entirely independent tim-
ing functions. These highly stable, general purpose con-
trollers can be used in a monostable mode to produce
accurate time delays, from microseconds to hours. The time
is precisely controlled by one external resistor and one
capacitor in the time delay mode. A stable mode can be oper-
ated using two of four time sections.
16-DIP
1
16-SOP
1
©2001 Fairchild Semiconductor Corporation
Rev. 1.0.1


Fairchild Semiconductor Electronic Components Datasheet

KA558B Datasheet

Quad Timer

No Preview Available !

KA558/KA558B
Absolute Maximum Ratings (TA = 25°C)
Parameter
Supply Voltage
Lead Temperature (soldering 10sec)
Power Dissipation
Operating Temperature Range KA558/KA558B
Storage Temperature Range
Symbol
VCC
TLEAD
PD
TOPR
TSTG
Value
16
300
600
0 ~ + 70
-65 ~ + 150
Unit
V
°C
mW
°C
°C
Electrical Characteristics
(VCC = 5 ~ 15V, TA = 25°C, unless otherwise specified)
Parameter
Supply Voltage
Supply Current
Timing Error (T = RC)
Initial Accuracy
Drift with Temperature
Drift with Supply Voltage
*1Trigger Voltage
*1Trigger Current
*2Reset Voltage
*2Reset Current
Threshold Voltage
Threshold Current
*3Output Voltage
Output Leakage Current
Propagation Delay Time
Rise Time
Fall Time
Symbol
VCC
ICC
Conditions
Min.
- 4.5
VCC =15V, reset voltage =15V -
Typ.
-
16
Max.
16
36
Unit
V
mA
ACCUR
t/T
t/VCC
VTR
ITR
VRST
IRST
R = 2Kto 100K, C =1µF
VCC = 15V
VTR= 0V
-
-
VTH -
ITH
VO
ILKG
tD
tR
tF
IL = 10mA
IL = 100mA
IL = 100mA
IL = 100mA
-
-
-
-
±2 5 %
30 150 PPM/°C
0.1 0.9 %/V
-
1.5 2.4
V
- 5.0 100 µA
0.8 1.5 2.4
V
- 50 500 µA
0.8
0.63 ×
VCC
-
V
- 15 - nA
- 0.1 0.4
V
- 1.0 2.0
- 10 500 nA
- 1.0 - µS
- 100 - nS
- 100 - nS
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.
2. For reset below 0.8V, outputs set low and trigger inhibited.
3. Output structure is open collector which requires a pull up resistor to VCC to sink current.
The output is normally low sinking current.
2


Part Number KA558B
Description Quad Timer
Maker Fairchild
Total Page 6 Pages
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