LM555 Harris Corporation, LM555 Datasheet

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LM555

Manufacturer Part Number
LM555
Description
Manufacturer
Harris Corporation
Datasheet

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May 1997
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
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%/
• Directly Interchangeable with SE555, NE555, MC1555,
Applications
• Precision Timing
• Sequential Timing
• Time Delay Generation
Ordering Information
NOTE:
Pinouts
CA0555E
CA0555M (555)
CA0555M96 (555)
CA0555T
CA0555CE
CA0555CM (555C)
CA0555CM96 (555C)
CA0555CT
LM555N
LM555CN
NE555N
and MC1455
PART NUMBER
©
(BRAND)
Harris Corporation 1997
S E M I C O N D U C T O R
Denotes Tape and Reel
TRIGGER
TRIGGER
OUTPUT
RESET
OUTPUT
GND
LM555, LM555C, NE555 (PDIP)
CA555, CA555C (METAL CAN)
CA555, CA555C (PDIP, SOIC)
GND
2
1
2
3
4
RANGE (
1
3
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
TOP VIEW
TOP VIEW
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
TEMP.
RESET
V+
8
4
• Pulse Generation
• Pulse Detector
• Pulse Width and Position
o
C)
Modulation
5
TAB
7
8 Ld PDIP
8 Ld SOIC
8 Ld SOIC
8 Pin Metal Can
8 Ld PDIP
8 Ld SOIC
8 Ld SOIC
8 Pin Metal Can
8 Ld PDIP
8 Ld PDIP
8 Ld PDIP
8
7
6
5
6
DISCHARGE
CONTROL
VOLTAGE
V+
DISCHARGE
THRESHOLD
CONTROL
VOLTAGE
THRESHOLD
PACKAGE
Timers for Timing Delays and Oscillator Application
LM555, LM555C, NE555
in Commercial, Industrial and Military Equipment
E8.3
M8.15
M8.15
T8.C
E8.3
M8.15
M8.15
T8.C
E8.3
E8.3
E8.3
PKG.
NO.
o
C
8-3
Description
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 accu-
rate time delays for periods ranging from microseconds
through hours. These devices are also useful for astable
oscillator operation and can maintain an accurately con-
trolled free running frequency and duty cycle with only two
external resistors and one capacitor.
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.
These types are direct replacements for industry types in
packages with similar terminal arrangements e.g. SE555
and NE555, MC1555 and MC1455, respectively. The CA555
type circuits are intended for applications requiring premium
electrical performance. The CA555C type circuits are
intended for applications requiring less stringent electrical
characteristics.
Functional Block Diagram
6
4
CA555, CA555C,
THRESHOLD
COMPAR
V+
8
CONTROL
VOLTAGE
GND
1
5
TRIGGER
2
FLIP-FLOP
TRIGGER
COMPAR
File Number
OUTPUT
3
7
834.4

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LM555 Summary of contents

Page 1

... CA0555CM96 (555C CA0555CT LM555N -55 to 125 LM555CN NE555N † NOTE: Denotes Tape and Reel Pinouts CA555, CA555C (PDIP, SOIC) LM555, LM555C, NE555 (PDIP) TOP VIEW 1 GND 2 TRIGGER OUTPUT 3 RESET 4 CA555, CA555C (METAL CAN) TOP VIEW V+ TAB 8 GND ...

Page 2

... DC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Operating Conditions Temperature Range CA555, LM555 . . . . . . . . . . . . . . . . . . . . . . . . . . -55 CA555C, LM555C, NE555 . . . . . . . . . . . . . . . . . . . . .0 CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. ...

Page 3

... CA555, CA555C, LM555, LM555C, NE555 Electrical Specifications PARAMETER SYMBOL Output Rise Time t Output Fall Time t NOTES: 2. When the output high state, the DC supply current is typically 1mA less than the low state value. 3. The threshold current will determine the sum of the values of R ...

Page 4

... CA555, CA555C, LM555, LM555C, NE555 RESET R 680 CA555 10K 2 C 4.7K T 680 0. START NOTE: All resistance values are in ohms. FIGURE 1. RESET TIMER (MONOSTABLE OPERATION) Since the charge rate and threshold level of the comparator are both directly proportional to V+, the timing interval is rel- atively independent of supply voltage variations ...

Page 5

... CA555, CA555C, LM555, LM555C, NE555 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 150 -55 A 100 0.1 0.2 MINIMUM TRIGGER (PULSE) VOLTAGE (x V+) (NOTE) NOTE: Where x is the decimal multiplier of the supply voltage ...

Page 6

... CA555, CA555C, LM555, LM555C, NE555 Typical Performance Curves 10 10V T A 1.0 o 125 0.1 0. SINK CURRENT (mA) FIGURE 11. OUTPUT VOLTAGE LOW STATE vs SINK CURRENT 1.100 1.000 0.990 0.980 0 2.5 5 7.5 10 SUPPLY VOLTAGE (V) FIGURE 13. DELAY TIME vs SUPPLY VOLTAGE 300 250 200 150 ...

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