Datasheets

Semiconductor

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UCT UCT D ROD TE P TE PRO E SOL STITU OB UB 5 LE S ICM755 SSIB

CA555, CA555C, LM555C
December 1999 File Number 834.6

Timers for Timing Delays and Oscillator Applications in Commercial, Industrial and Military Equipment
[ /Title The CA555 and CA555C are highly stable timers for use in (CA55 precision timing and oscillator applications. As timers, these 5, monolithic integratedcircuits are capable of producing CA555 accurate time delays for periods ranging from microseconds through hours. These devices are also useful for astable C, LM555 oscillator operation and can maintain an accurately controlled free running frequency and duty cycle with only C) two external resistors and one capacitor. /SubThe circuits of the CA555 and CA555C may be triggered by ject the fallingedge of the waveform signal, and the output of (Tim- these circuits can source or sink up to a 200mA current or ers for drive TTL circuits. Timing These types are direct replacements for industry types in Delays 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 premiumelectrical performance. The CA555C type circuits are tor Appli- intended for applications requiring less stringent electrical cations characteristics. in Part Number Information ComPART NUMBER TEMP. PKG. mer(BRAND) RANGE (oC) PACKAGE NO. cial, CA0555E -55 to 125 8 Ld PDIP E8.3 IndusCA0555CE 0 to 70 8 Ld PDIP E8.3 trial LM555CN 0 to 70 8 Ld PDIP E8.3 and MiliPinout tary CA555, CA555C, LM555C, (PDIP)EquipTOP VIEW ment) 8 V+ GND 1 /Author 7 DISCHARGE TRIGGER 2 () OUTPUT 3 6 THRESHOLD /Key5 CONTROL RESET 4 words VOLTAGE (Harris Semiconductor, 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

THRESHOLD

TRIGGER COMPAR 6 OUTPUT THRESHOLD COMPARFLIP-FLOP

3

7

RESET

4

1 GND

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Copyright © Harris Corporation 1999

DISCHARGE OUTPUT

CA555, CA555C, LM555C
Absolute Maximum Ratings
DC Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V

Thermal Information
Thermal Resistance (Typical, Note 1) θJA (oC/W)θJC (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . 100 N/A Maximum Junction Temperature (Plastic Package) . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC

Operating Conditions
Temperature Range CA555 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to125oC CA555C, LM555C . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 70oC

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.

NOTE: 1. θJA is measuredwith the component mounted on an evaluation PC board in free air.

Electrical Specifications
PARAMETER DC Supply Voltage DC Supply Current (Low State) (Note 2) Threshold Voltage Trigger Voltage

TA = 25oC, V+ = 5V to 15V Unless Otherwise Specified CA555 SYMBOL V+ I+ V+ = 5V, RL = ∞ V+ = 15V, RL = ∞ VTH V+ = 5V V+ = 15V TEST CONDITIONS MIN 4.5 1.45 4.8 ITH 0.4 V+ = 5V V+ = 15V 2.9 9.6 3.0 13.0 tR tF...