Timer archives - Page 10 of 34

Description

The NE555, SA555, and SE555 monolithic timing circuits are highly stable controllers capable of producing accurate time delays or oscillation. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For a stable operation as an oscillator, the free running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output structure can source or sink up to 200 mA.

NE555 Pinout

Features

1. Low turn-off time
2. Maximum operating frequency greater than 500 kHz
3. Timing from microseconds to hours
4. Operates in both astable and monostable modes
5. Output can source or sink up to 200 mA
6. Adjustable duty cycle
7. TTL compatible
8. Temperature stability of 0.005% per °C

Part Number: 555

Function: LinCMOS Timer (Rev. F)

Package: DIP, SOIC 8 Pin Type

Manufacturer: Texas Instruments

Images:

555 datasheet pdf

Description

The 555 is a monolithic timing circuit fabricated using the TI LinCMOS process. The timer is fully
compatible with CMOS, TTL, and MOS logic and operates at frequencies up to 2 MHz. Because of its
high input impedance, this device supports smaller timing capacitors than those supported by the NE555 or LM555. As a result, more accurate time delays and oscillations are possible. Power consumption is low across the full range of power-supply voltage.

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Features

1. Very low power consumption : 1-mW typical at VDD = 5 V

2. Capable of operation in astable mode

3. CMOS output capable of swinging rail to rail

4. High output current capability
– Sink: 100-mA typical
– Source: 10-mA typical

5. Output fully compatible with CMOS, TTL, and MOS

6. Low supply current reduces spikes during output transitions

Timer

NE555 Datasheet – 555, Single Bipolar Timer ( PDF )

Description

NE555 Datasheet

555 PDF Datasheet – LinCMOS Timer ( TLC555 )

Description

Features

555 Datasheet