IC TIMER SINGLE PREC 8-SOP

LM555CM

Manufacturer Part NumberLM555CM
DescriptionIC TIMER SINGLE PREC 8-SOP
ManufacturerFairchild Semiconductor
Type555 Type, Timer/Oscillator (Single)
LM555CM datasheet
 

Specifications of LM555CM

Voltage - Supply4.5 V ~ 16 VCurrent - Supply7.5mA
Operating Temperature0°C ~ 70°CPackage / Case8-SOIC (3.9mm Width)
Frequency100kHzNumber Of Internal Timers1
Supply Voltage (max)16 VSupply Voltage (min)4.5 V
Maximum Power Dissipation600 mWMaximum Operating Temperature+ 70 C
Minimum Operating Temperature0 CMounting StyleSMD/SMT
DcN/ALead Free Status / RoHS StatusLead free / RoHS Compliant
Count-Other namesLM555CMFS
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LM555/NE555/SA555
Single Timer
Features
Features
Features
Features
• High Current Drive Capability (200mA)
• Adjustable Duty Cycle
• Temperature Stability of 0.005%/ C
• Timing From Sec to Hours
• Turn off Time Less Than 2 Sec
Applications
Applications
Applications
Applications
• Precision Timing
• Pulse Generation
• Time Delay Generation
• Sequential Timing
Internal Block Diagram
Internal Block Diagram
Internal Block Diagram
Internal Block Diagram
GND
GND
GND
GND
1 1 1 1
Trigger
Trigger
Trigger
Trigger
2 2 2 2
Output
Output
Output
Output
3 3 3 3
Reset
Reset
Reset
Reset
4 4 4 4
©2002 Fairchild Semiconductor Corporation
Description
Description
Description
Description
The LM555/NE555/SA555 is a highly stable controller
capable of
producing
monostable operation, the time delay is controlled by one
external resistor and one capacitor. With an astable
operation, the frequency and duty cycle are accurately
controlled by two external resistors and one capacitor.
8-DIP
8-DIP
8-DIP
8-DIP
1
8-SOP
8-SOP
8-SOP
8-SOP
1
R R R R
R R R R
R R R R
Comp.
Comp.
Comp.
Comp.
Discharging Tr.
Discharging Tr.
Discharging Tr.
Discharging Tr.
OutPut
OutPut
OutPut
OutPut
F/F
F/F
F/F
F/F
Stage
Stage
Stage
Stage
Comp.
Comp.
Comp.
Comp.
Vref
Vref
Vref
Vref
www.fairchildsemi.com
www.fairchildsemi.com
www.fairchildsemi.com
www.fairchildsemi.com
accurate timing pulses. With a
Vcc
Vcc
Vcc
Vcc
8 8 8 8
Discharge
Discharge
Discharge
Discharge
7 7 7 7
Threshold
Threshold
Threshold
Threshold
6 6 6 6
Control
Control
Control
Control
5 5 5 5
Voltage
Voltage
Voltage
Voltage
Rev. 1.0.3

LM555CM Summary of contents

  • Page 1

    ... Output Output Output Output Reset Reset Reset Reset ©2002 Fairchild Semiconductor Corporation Description Description Description Description The LM555/NE555/SA555 is a highly stable controller capable of producing monostable operation, the time delay is controlled by one external resistor and one capacitor. With an astable operation, the frequency and duty cycle are accurately controlled by two external resistors and one capacitor ...

  • Page 2

    LM555/NE555/SA555 Absolute Maximum Ratings (T Absolute Maximum Ratings (T Absolute Maximum Ratings (T Absolute Maximum Ratings (T Parameter Parameter Parameter Parameter Supply Voltage Lead Temperature (Soldering 10sec) Power Dissipation Operating Temperature Range LM555/NE555 SA555 Storage Temperature Range ...

  • Page 3

    Electrical Characteristics Electrical Characteristics Electrical Characteristics Electrical Characteristics ( 15V, unless otherwise specified Parameter Parameter Parameter Parameter Supply Voltage Supply Current (Low Stable) (Note1) Timing Error (Monostable) Initial Accuracy (Note2) Drift ...

  • Page 4

    LM555/NE555/SA555 Application Information Application Information Application Information Application Information Table 1 below is the basic operating table of 555 timer: Threshold Voltage Threshold Voltage Threshold Voltage Threshold Voltage Trigger Voltage Trigger Voltage Trigger Voltage Trigger Voltage ( ...

  • Page 5

    Figure 1 illustrates a monostable circuit. In this mode, the timer generates a fixed pulse whenever the trigger voltage falls below Vcc/3. When the trigger pulse voltage applied to the #2 pin falls below Vcc/3 while the timer output is ...

  • Page 6

    LM555/NE555/SA555 Figure 7. Waveforms of Astable Operation Figure 7. Waveforms of Astable Operation Figure 7. Waveforms of Astable Operation Figure 7. Waveforms of Astable Operation An astable timer operation is achieved by adding resistor R operation, the trigger terminal and ...

  • Page 7

    – In2 0.693 The equivalent circuit for discharging ...

  • Page 8

    LM555/NE555/SA555 Figure 8. Waveforms of Frequency Divider Operation Figure 8. Waveforms of Frequency Divider Operation Figure 8. Waveforms of Frequency Divider Operation Figure 8. Waveforms of Frequency Divider Operation 4. Pulse Width Modulation 4. Pulse Width Modulation 4. Pulse Width ...

  • Page 9

    RESET Vcc 7 DISCH 2 TRIG 6 THRES Output Output Output Output 3 OUT Modulation Modulation Modulation Modulation 5 CONT GND 1 Figure 11. Circuit for Pulse Position Modulation Figure 11. Circuit for Pulse Position Modulation Figure 11. ...

  • Page 10

    LM555/NE555/SA555 When the trigger starts in a timer configured as shown in Figure 13, the current flowing through capacitor C1 becomes a constant current generated by PNP transistor and resistors. Hence, the linear ramp function as shown ...

  • Page 11

    Mechanical Dimensions Mechanical Dimensions Mechanical Dimensions Mechanical Dimensions Package Package Package Package 6.40 0.20 0.252 0.008 # 7.62 0.300 Dimensions in millimeters Dimensions in millimeters Dimensions in millimeters Dimensions in millimeters 8-DIP 8-DIP 8-DIP 8-DIP 5.08 MAX ...

  • Page 12

    LM555/NE555/SA555 Mechanical Dimensions Mechanical Dimensions Mechanical Dimensions Mechanical Dimensions Package Package Package Package #1 #4 6.00 0.236 3.95 0.156 5.72 0.225 0.50 0.20 0.020 0.008 (Continued) 8-SOP 8-SOP 8-SOP 8-SOP 1.55 0.20 0.061 0.008 #8 #5 ...

  • Page 13

    ... Ordering Information Ordering Information Ordering Information Ordering Information Product Number Product Number Product Number Product Number LM555CN LM555CM Product Number Product Number Product Number Product Number NE555N NE555D Product Number Product Number Product Number Product Number SA555 SA555D Package Package Package ...

  • Page 14

    ... DISCLAIMER DISCLAIMER DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...