CA555 Datasheet PDF - Intersil Corporation
| Part Number | CA555 | |
| Description | Timers for Timing Delays and Oscillator Applications in Commercial/ Industrial and Military Equipment | |
| Manufacturers | Intersil Corporation | |
| Logo |  |
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Semiconductor
POSSOIBBLSEOSLUEIBCTSEMT7PIT5R5UO5TDEUPCRTODUCT
CA555, CA555C, LM555C
December 1999
File Number 834.6
Timers for Timing Delays and Oscillator
Applications in Commercial, Industrial
and Military Equipment
[ /Title
(CA55
5,
CA555
The CA555 and CA555C are highly stable timers for use in
precision timing and oscillator applications. As timers, these
monolithic integrated circuits are capable of producing
accurate time delays for periods ranging from microseconds
C, through hours. These devices are also useful for astable
LM555
C)
/Sub-
oscillator operation and can maintain an accurately
controlled free running frequency and duty cycle with only
two external resistors and one capacitor.
ject
(Tim-
ers for
The circuits of the CA555 and CA555C may be triggered by
the falling edge of the waveform signal, and the output of
these circuits can source or sink up to a 200mA current or
drive TTL circuits.
Timing
Delays These types are direct replacements for industry types in
packages with similar terminal arrangements e.g. SE555
and and NE555, MC1555 and MC1455, respectively. The CA555
Oscilla- type circuits are intended for applications requiring premium
tor electrical performance. The CA555C type circuits are
Appli- intended for applications requiring less stringent electrical
cations characteristics.
in
Com-
mer-
cial,
Indus-
trial
and
Part Number Information
PART NUMBER
(BRAND)
TEMP.
RANGE (oC)
PACKAGE
CA0555E
CA0555CE
LM555CN
-55 to 125 8 Ld PDIP
0 to 70 8 Ld PDIP
0 to 70 8 Ld PDIP
PKG.
NO.
E8.3
E8.3
E8.3
Mili-
tary
Equip-
ment)
/Author
()
Pinout
CA555, CA555C, LM555C, (PDIP)
TOP VIEW
GND 1
TRIGGER 2
8 V+
7 DISCHARGE
/Key-
OUTPUT 3
6 THRESHOLD
words
(Harris
RESET 4
5 CONTROL
VOLTAGE
Semi-
con-
ductor,
single,
timer,
Features
• Accurate Timing From Microseconds Through Hours
• Astable and Monostable Operation
• Adjustable Duty Cycle
• Output Capable of Sourcing or Sinking up to 200mA
• Output Capable of Driving TTL Devices
• Normally ON and OFF Outputs
• High Temperature Stability . . . . . . . . . . . . . . . . 0.005%/oC
• Directly Interchangeable with SE555, NE555, MC1555,
and MC1455
Applications
• Precision Timing
• Sequential Timing
• Time Delay Generation
• Pulse Generation
• Pulse Detector
• Pulse Width and Position Modulation
Functional Block Diagram
V+ TRIGGER
CONTROL
8 VOLTAGE 5 2
6
THRESHOLD
COMPAR
4
TRIGGER
COMPAR
FLIP-FLOP
3
OUTPUT
7
1
GND
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Copyright © Harris Corporation 1999
|
| |
 
CA555, CA555C, LM555C
t1 t2
5V
0
3.3V
1.7V
0
Top Trace: Output voltage (2V/Div. and 0.5ms/Div.)
Bottom Trace: Capacitor voltage (1V/Div. and 0.5ms/Div.)
FIGURE 5. TYPICAL WAVEFORMS FOR REPEAT CYCLE TIMER
Typical Performance Curves
100
10
1
0.1
0.01
0.001
10-1
TA = 25oC, V+ = 5V
1MΩ
10MΩ
10kΩ
100kΩ
R1 + 2R2 = 1kΩ
1 10 102 103 104 105
FREQUENCY (Hz)
FIGURE 6. FREE RUNNING FREQUENCY OF REPEAT CYCLE
TIMER WITH VARIATION IN CAPACITANCE AND
RESISTANCE
150
100 TA = -55oC
0oC
25oC
50 70oC
125oC
0 0.1 0.2 0.3 0.4
MINIMUM TRIGGER (PULSE) VOLTAGE (x V+) (NOTE)
NOTE: Where x is the decimal multiplier of the supply voltage.
FIGURE 7. MINIMUM PULSE WIDTH vs MINIMUM TRIGGER
VOLTAGE
2.0
TA = -55oC
1.6
25oC
1.2
125oC
0.8
0.4
0
1
5V ≤ V+ ≤ 15V
10
SOURCE CURRENT (mA)
100
FIGURE 9. OUTPUT VOLTAGE DROP (HIGH STATE) vs
SOURCE CURRENT
5
10 TA = 125oC
9
8 25oC
7
6 50oC
5
4
3
2
1
0 2.5
5 7.5 10 12.5
SUPPLY VOLTAGE (V)
15
FIGURE 8. SUPPLY CURRENT vs SUPPLY VOLTAGE
10.0
V+ = 5V
1.0
TA = -55oC
25oC
125oC
0.1
0.01
1
10
SINK CURRENT (mA)
FIGURE 10. OUTPUT VOLTAGE LOW STATE vs SINK
CURRENT
100
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for CA555 electronic component. |
| Information | Total 6 Pages | |
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| Download | [ CA555.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| CA555 | The function is Timers for Timing Delays and Oscillator Applications in Commercial/ Industrial and Military Equipment. Intersil Corporation | |
| CA555 | The function is Timers. Harris |  |
| CA555C | The function is Timers for Timing Delays and Oscillator Applications in Commercial/ Industrial and Military Equipment. Intersil Corporation | |
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