Topic       : Chips 'n Chips
Author      : Michael Ruge
Version     : chips_x.hyp (01/05/2001)
Subject     : Dokumentation/Hardware
Nodes       : 1505
Index Size  : 35662
HCP-Version : 3
Compiled on : Atari
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   Der 555 Single Timer IC

        +----------+ 
    GND |1  +--+  8| VCC
     TR |2        7| Dis
      Q |3  555   6| Thr
   /RST |4        5| CV
        +----------+ 
   General Description
   The 555 is a highly stable device for generating accurate time 
   delays or oscillation. Additional terminals are provided for trig-
   gering or resetting if desired. In the time delay mode of operation,
   the time is precisely controlled by one external resistor and capa-
   citor. For astable operation as an oscillator, the free running fre-
   quency and duty cycle are accurately controlled with two external 
   resistors and one capacitor. The circuit may be triggered and reset
   on falling waveforms, and the output circuit can source or sink up
   to 200 mA or drive TTL circuits.
 
   Features
   Direct replacement for SE555/NE555/LM555
   Timing from microseconds through hours
   Operates in both astable and monostable modes
   Adjustable duty cycle
   Output can source or sink 200 mA
   Output and supply TTL compatible
   Temperature stability better than 0.005% per Grad Celsius
   Normally on and normally off output
   Available in 8 pin MSOP package


   Der 556 Dual Timer IC
 
         +----------+
    1Dis |1  +--+ 14| VCC
    1Thr |2       13| 2Dis
     1CV |3       12| 2Thr
   /1RST |4  556  11| 2CV
      1Q |5       10| /2RST
     1TR |6        9| 2Q
     GND |7        8| 2TR
         +----------+
   General Description
   The 556 Dual timing circuit is a highly stable controller capable
   of producing accurate time delays or oscillation. The 556 is a dual
   555. Timing is provided by an external resistor and capacitor for 
   each timing function. The two timers operate independently of each 
   other sharing only Vcc and ground. The circuits may be triggered and
   reset on falling waveforms. The output structures may sink or source
   200 mA.
 
   Features
   Direct replacement for SE556/NE556/LM556
   Timing from microseconds through hours
   Operates in both astable and monostable modes
   Replaces two 555 timers
   Adjustable duty cycle
   Output can source or sink 200 mA
   Output and supply TTL compatible
   Temperature stability better than 0.005% per Grad Celsius
   Normally on and normally off output

     Kapitel Der LM555 und der LM556 Timer IC, Seite 1