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The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...
The Intel 8253 PIT was the original timing device used on IBM PC compatibles.It used a 1.193182 MHz clock signal (one third of the color burst frequency used by NTSC, one twelfth of the system clock crystal oscillator, [1] therefore one quarter of the 4.77 MHz CPU clock) and contains three timers.
The DAI also had five programmable interval 64μs - 16ms interval timers that could generate interrupts. ... with voltage selector 220-110 volt, figure 8 shape AC ...
The timer may switch equipment on, off, or both, at a preset time or times, after a preset interval, or cyclically. A countdown time switch switches power, usually off, after a preset time. A cyclical timer switches equipment both on and off at preset times over a period, then repeats the cycle; the period is usually 24 hours or 7 days.
Positive supply: For bipolar timers, the supply voltage range is typically 4.5 to 16 volts (some are spec'ed for up to 18 volts, though most will operate as low as 3 volts). For CMOS timers, the supply voltage range is typically 2 to 15 volts (some are spec'ed for up to 18 volts, and some are spec'ed as low as 1 volt).
programmable frequency divider/digital timer 16 SN74LS292: 74x293 1 4-bit binary counter (separate divide-by-2 and divide-by-8 sections) 14 SN74LS293: 74x294 1 programmable frequency divider/digital timer 16 SN74LS294: 74x295 1 4-bit bidirectional shift register three-state 14 SN74LS295B: 74x297 1 digital phase-locked loop filter 16 SN74LS297 ...
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3579 S High St, Columbus, OH · Directions · (614) 409-0683