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CD4047BE Multi-Frequency Oscillator / Monostable Multivibrator IC DIP-14 – Pack of 5
CD4047BE Multi-Frequency Oscillator / Monostable Multivibrator IC DIP-14 – Pack of 5
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CD4047BE CMOS Multi-Frequency Oscillator / Monostable Multivibrator — DIP-14 (5-Pack)
The CD4047BE is a versatile CMOS IC that operates as either a free-running astable oscillator or a monostable multivibrator (one-shot), selectable via pin configuration. With a supply range of 3V–15V and complementary Q/̅Q outputs, it is widely used in inverter circuits, pulse generation, and timing applications.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | CD4047BE |
| Package | DIP-14 |
| Supply Voltage (VDD) | 3V – 15V |
| Operating Modes | Astable oscillator / Monostable one-shot |
| Outputs | Q and ̅Q (complementary) |
| Timing Components | External R + C |
| Astable Frequency | f = 1 / (4.4 × R × C) |
| Monostable Pulse Width | t = 2.48 × R × C |
| Operating Temperature | −55°C to +125°C |
| Quantity | 5 pieces |
Operating Modes
- Astable Mode — Connect pin 5 (ASTABLE) high; Q and ̅Q toggle at f = 1/(4.4×R×C). Complementary outputs give 50% duty cycle push-pull drive.
- Monostable Mode — Trigger via +TRIGGER (pin 8) or −TRIGGER (pin 6); output pulse width = 2.48×R×C. Retrigger or non-retrigger selectable.
Why Choose CD4047BE?
- Dual-Mode Versatility — One IC covers both oscillator and one-shot timing needs
- Complementary Outputs — Q and ̅Q directly drive push-pull or H-bridge stages
- Wide Supply Range — 3V–15V suits battery and mains-derived supplies
- Simple External Components — Only one R and one C needed for timing
- Industry Standard — Widely used in DIY inverter and UPS designs
Typical Applications
- Pure sine wave / square wave inverter SPWM driver (paired with IR2110)
- DC-AC inverter oscillator stage (50Hz/60Hz generation)
- Pulse-width modulation (PWM) signal generation
- Missing pulse detector and watchdog timer
- Frequency divider and clock generation
- Monostable delay timer for relay activation
FAQ
Q: How do I generate 50Hz for an inverter with CD4047BE?
A: In astable mode, f = 1/(4.4×R×C). For 50Hz: use R=100kΩ, C=45nF (or R=47kΩ, C=100nF). The ̅Q output is 180° out of phase with Q — perfect for push-pull inverter drive.
Q: Can CD4047BE replace NE555 for oscillator applications?
A: Yes for push-pull applications — CD4047BE provides complementary outputs that NE555 cannot. For single-ended oscillators, NE555 is simpler.
Package Contents
- 5× CD4047BE DIP-14 Oscillator/Monostable Multivibrator IC
