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Description
Monostable/Astable Multivibrator/
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CD4047B consists of a gatable astable multivibrator with logic techniques incorporated to permit positive or negative edge-triggered monostable multivibrator action with retriggering and external counting options.
Inputs include +TRIGGER, -TRIGGER, ASTABLE, ASTABLE, RETRIGGER,and EXTERNAL RESET.Buffered outputs are Q, Q.and OSCILLATOR. in all modes of operation, and external capacitor must be connected between C-Timing and RC-Common terminals, and an external resistor must be connected between the R-Timing and RC-Common terminals.
Astable operation is enabted by a high level on the ASTABLE input or a low level on the ASTABLE input,or both. The period of the square wave at the Q and Q Outputs in this mode of operation is a function of the external components employed. “True" input pulses on the ASTABLE input or "Compiement" pulses on the ASTABLE input allow the circuit to be used as a gatable muitivibrator. The OSCILLATOR output period will be half of the Q terrninal output in the astable mode. However, a 50% duty cycle is not guaranteed at this output.
The CD4047B triggers in the monostable mode when a positive-going edge occurs on the+ TRIGGER-input while the-TRIGGER is held low.1nput pulses may be of any duration relative to the output pulse.
If retrigger capability is desired, the RETRIGGER input is pulsed. The retrig-gerable mode of operation is limited to positive-going edge. The CD4047B will retrigger as long as the RETRIGGER-input is high, with or without transitions.
An external countdown option can be implemented by coupling "Q" to an external “N” counter and resetting the counter with the trigger pulse.The counter output pulse is fed back to the ASTABLE input and has a duration equal to N times the period of the multivibrator.
A high level on the EXTERNAL RESET input assures no output pulse during an “ON” power condition. This input can also be activated to terminate the output pulse at any time.For monostable operation, whenever VDD is applied, an internal power-on reset circuit will clock the Q output low within one output period (tM).
The CD4047B-Series types are supplied in 14-leadhermeticdual-in-line ceramic packages (F3A suffix), 14-lead dual-in-line plastic packages (E suffix), 14-lead small-outline packages (M, MT, M96, and NSR suffixes), and14-lead thin shrink small-outline packages (PW and PWR suffixes).
Preview of the first 3 pages of the data sheet
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10000 buyer reviews from United States
Paul Morris
Length of registration:7 years
I recently ordered an IC CD4047BE from your store and I am very pleased with the product. The IC is a high-performance monostable multivibrator with a wide range of applications, and it has been performing very well in my circuit. The IC is easy to use and provides a reliable and consistent output. I am very satisfied with the product and would definitely recommend it to others. Thank you for prov
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03/17/2023
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CD4047BE
CD4047BE has several brands around the world that may have alternate names for CD4047BE due to regional differences or acquisition. CD4047BE may also be known as the following names:
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