bipolar timers. 555 Datasheet

555 timers. Datasheet pdf. Equivalent

Part 555
Description General-purpose single bipolar timers
Feature NE555 SA555 - SE555 General-purpose single bipolar timers Features ■ Low turn-off time ■ Maximum op.
Manufacture STMicroelectronics
Datasheet
Download 555 Datasheet



555
NE555
SA555 - SE555
General-purpose single bipolar timers
Features
■ Low turn-off time
■ Maximum operating frequency greater than
500 kHz
■ Timing from microseconds to hours
■ Operates in both astable and monostable
modes
■ Output can source or sink up to 200 mA
■ Adjustable duty cycle
■ TTL compatible
■ Temperature stability of 0.005% per °C
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.
N
DIP8
(Plastic package)
D
SO8
(Plastic micropackage)
Pin connections
(top view)
1
2
3
4
1 - GND
2 - Trigger
3 - Output
4 - Reset
8
7
6
5
5 - Control voltage
6 - Threshold
7 - Discharge
8 - VCC
January 2012
Doc ID 2182 Rev 6
1/20
www.st.com
20



555
Schematic diagrams
1 Schematic diagrams
Figure 1. Block diagram
VCC+
THRESHOLD
CONTROL VOLTAGE
TRIGGER
RESET
5kΩ
COMP
R
FLIP-FLOP
5kΩ
COMP
Q
S
INHIBIT/
RESET
5kΩ
S
Figure 2. Schematic diagram
NE555 - SA555 - SE555
DISCHARGE
OUT
2/20 Doc ID 2182 Rev 6


  • Related Products Using the Same Datasheet
  • 555 Recommendation Datasheet

  • 555 Precision Timers, etcTI

  • 555 PRECISION TIMERS, Diodes

  • 555 Single Timer, Fairchild Semiconductor

  • 555 SINGLE TIMER, UTC

  • 555 General-purpose single bipolar timers, STMicroelectronics

  • 555 Timer, ETC

  • 555 Timer, Signetics

  • 555 Timer, Philips

  • 5551 NPN SILICON TRANSISTOR, SHANTOU HUASHAN ELECTRONIC

  • Similar Datasheet
  • 550-VC6DT2 DIESEL ENGINE-GENERATOR SET, MTU Onsite Energy

  • 550-xx04 5mm LED CBI Circuit Board Indicator Top View, Dialight Corporation

  • 550-xx07-004 5mm LED CBI Circuit Board Indicator Sloped Back Housing, Dialight Corporation

  • 550-xx08 5mm LED CBI Circuit Board Indicator 250 LED Centerline, Dialight Corporation

  • 5510-26S-01-01-F1 D-Sub Socket High Density Right Angle Type, Neltron

  • 5510-xxS-02A-01 D-Sub High Density Right Angle Female, Neltron

  • 5510-xxS-xx-xx-F1 D-Sub Socket High Density Right Angle Type, Neltron

  • 5518 High Current RF Chokes, JW Miller

  • 551S Low Skew 1 to 4 Clock Buffer, IDT

  • 553-0111 (553-xxxx) MULTI-ELEMENT LED LIGHT SOURCE, Dialight

  • 553-0111-0xx LED Array, Dialight

  • 553-0111-200 (553-xxxx-200) LED Array, Dialight

  • 553-0111-2xx LED Array, Dialight

  • 553-0122 (553-xxxx) MULTI-ELEMENT LED LIGHT SOURCE, Dialight

  • 553-0122-0xx LED Array, Dialight




    • @ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)