SN74LS123DE4

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The SN74LS123DE4 is a TTL monostable and astable dual multivibrator. These monostable multivibrators feature a low power Schottky design, with substantial reductions in power over traditional TTL designs. The SN74LS123DE4 comes in a 16-lead DIP package and is typically specified for operation from 0°C to 70°C.

The SN74LS123DE4 is primarily used in logic applications, such as clocks and timers, pulse width modulation, pulse position modulation, frequency modulation and many others. For instance, the dual-output capability of the SN74LS123DE4 makes it particularly useful where two functions need to be synchronized, such as a clock and a timer.

The SN74LS123DE4 works by using two transistors or two logic gates connected in an "astable" or "monostable" configuration. In an astable configuration, the SN74LS123DE4 produces regular timing pulses with a frequency determined by the values of its external components. In a monostable configuration, the SN74LS123DE4 produces a single pulse in response to an input signal, the duration of this pulse being determined by the values of its external components.

When the SN74LS123DE4 is used in an astable mode, it produces square-wave outputs with a frequency and duty cycle determined by the values of its external components. This is achieved by alternately charging and discharging a capacitor through a resistor/capacitor network. The SN74LS123DE4 is capable of producing stable frequencies from a few hundred Hertz to several kilohertz, depending on the values of the external components.

In monostable operation the SN74LS123DE4 produces a single pulse upon receipt of an external signal. This pulse has a duration or width determined by the values of the external components. When the external signal is asserted, the output of the SN74LS123DE4 goes high and is held high until the capacitor has charged to a voltage determined by the values of the external components. When the capacitor has charged to the appropriate level, the output of the SN74LS123DE4 is returned to low.

The SN74LS123DE4 is a versatile and easy to use device which can be used in a wide range of timing and logic applications. Its low power requirements make it ideal for battery-powered applications and its dual output capability makes it particularly useful for a wide range of synchronous timing and logic applications.

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