CA555_99 datasheet(4/6 Pages) HARRIS | Timers for Timing Delays and Oscillator Applications in Commercial, Industrial and Military Equipment

4 page

Figure 2 shows the typical waveforms generated during this

mode of operation, and Figure 3 gives the family of time

delay curves with variations in R1 and CT.

Repeat Cycle Timer (Astable Operation)

Figure 4 shows the CA555 connected as a repeat cycle

timer. In this mode of operation, the total period is a function

of both R1 and R2.

T = 0.693 (R1 + 2R2) CT = t1 + t2

where t1 = 0.693 (R1 + R2) CT

and t2 = 0.693 (R2) CT

the duty cycle is:

Typical waveforms generated during this mode of operation

are shown in Figure 5. Figure 6 gives the family of curves of

free running frequency with variations in the value of

(R1 +2R2) and CT.

3.3V

SWITCH S1 “OPEN”

SWITCH S1 “CLOSED”

INPUT

VOLTAGE (TERMINAL 2)

CAPACITOR

VOLTAGE (TERMINALS 6, 7)

OUTPUT

VOLTAGE

(TERMINAL 3)

FIGURE 2. TYPICAL WAVEFORMS FOR RESET TIMER

TIME DELAY(s)

10-1

0.1

0.01

0.001

TA = 25

R1 = 1kΩ

10k

Ω

100

V+ = 5V

100k

Ω

10M

Ω

10-2

10-3

10-4

10-5

FIGURE 3. TIME DELAY vs RESISTANCE AND CAPACITANCE

CA555

0.01

µF

RELAY

COIL

V+

FIGURE 4. REPEAT CYCLE TIMER (ASTABLE OPERATION)

----------------

------------------------

CA555, CA555C, LM555C

Número de Pieza	Descripción de Componentes	Html View	Fabricante
CA3020_00	8MHz Power Amps For Military Industrial and Commercial Equipment	1 2 3 4 5 More	Intersil Corporation
CA741_01	0.9MHz Single and Dual High Gain Operational Amplifiers for Military Industrial and Commercial Applications	1 2 3 4 5 More	Intersil Corporation
CA139_01	Quad Voltage Comparators for Industrial Commercial and Military Applications	1 2 3 4 5 More	Intersil Corporation
CA3028A_99	Differential/Cascode Amplifier for Commercial and Industrial Equipment from DC to 120MHz	1 2 3 4 5 More	Harris Corporation
CA3028A	Differential/Cascode Amplifiers for Commercial and Industrial Equipment from DC to 120MHz	1 2 3 4 5 More	Harris Corporation
CX74063-3X	RF Transceiver with Power Ramping Controller and Integrated Crystal Oscillator with 13 MHz Output for Multi-Band GSM GPRS and EDGE Applications	1 2 3 4 5 More	Skyworks Solutions Inc.
ISL6322	Four-Phase Buck PWM Controller with Integrated MOSFET Drivers and I2C Interface for Intel VR10 VR11 and AMD Applications	1 2 3 4 5 More	Intersil Corporation
KM641003A	256Kx4 High Speed Static RAM 5V Operating Revolutionary Pin out Operated at Commercial and Industrial Temperature Range	1 2 3 4 5 More	Samsung semiconductor
KSH44H11I	General Purpose Power and Switching Such as Output or Driver Stages in Applications D-PAK for Surface Mount Applications	1 2 3 4 5	Fairchild Semiconductor
BQ27210	Li-Ion AND Li-Pol BATTERY GAS GAUGE IC FOR PORTABLE APPLICATIONS bqJUNIOR	1 2 3 4 5 More	Texas Instruments

Número de Pieza relacionado

Enlace URL

Patrocinador de Alldatasheet