Basic Product Information
Part Number: CD4047BM
Core Electrical Parameters
| Parameter |
Value |
Unit |
| Technology Family |
CD4000 |
– |
| Supply Voltage Range |
3 to 18 |
V |
| Quiescent Current (IC |
600 |
μA |
| Output Current (IOL/IOH) |
4 / -4 |
mA |
| Input Type |
Standard CMOS |
– |
| Output Type |
Push-Pull |
– |
| Monostable Pulse Width (typ) |
2.48 RC |
– |
| Astable Period (typ) |
4.40 RC |
– |
| Astable Frequency Stability |
±2% + 0.03%/°C @ 100kHz |
– |
| Trigger Modes |
Positive-edge / Negative-edge / Retriggerable |
– |
| Outputs |
Q, Q̈, OSCILLATOR (buffered) |
– |
| Internal Power-On Reset |
Yes |
– |
| External Countdown Option |
Yes |
– |
| Operating Temperature |
-55 to +125 |
°C |
| Package Size |
SOIC-14 (8.65 x 3.91mm nom) |
mm |
Core Features & Advantages
The CD4047BM delivers a versatile CMOS timing solution combining monostable (one-shot) and astable (free-running) multivibrator modes with retriggerable and external countdown options in a single 14-pin SOIC.
- Primary Function: Low-power CMOS multivibrator configurable for monostable, astable, or retriggerable operation, requiring only one external resistor and capacitor for timing.
- Advantages:
- Dual-mode versatility — supports monostable (positive/negative-edge trigger) and astable (free-running or gatable) modes with retrigger and external countdown options, replacing multiple dedicated timer ICs.
- 50% duty cycle in astable mode — guaranteed symmetric output without external divider networks, simplifying clock generation for digital systems.
- Wide 3V–18V supply range with ultra-low CMOS power — special oscillator configuration minimizes power consumption, enabling battery-operated and noise-sensitive digital timing applications.
Typical Application Scenarios
- Industry: Industrial / Consumer / Test & Measurement
- Equipment: Timing circuits, frequency multipliers/dividers, envelope detectors, time-delay relays
- Use Cases:
- Precision timing and pulse-width generation in industrial control systems with monostable mode and retriggerable extension.
- Low-frequency clock generation and frequency division in CMOS digital systems using astable mode with 50% duty cycle.
- Envelope detection and time-delay applications in communication and test equipment with wide 3V–18V supply flexibility.
Market Reference Price
| Market |
Price Range |
Currency |
| Huaqiangbei Spot |
$0.15 – $0.40 |
USD |
| Overseas B2B |
$0.49 – $1.21 |
USD |
Related Models Comparison
| Model |
Difference |
Application |
| CD4047BPWR |
Same die in TSSOP-14 (PW) package, smaller footprint for space-constrained designs |
Compact digital timing where PCB area is limited |
| NE555 |
Single-mode timer (astable/monostable), bipolar, higher supply current (~3mA), more popular |
General-purpose timing where CMOS power is not required |
| CD4098BM |
Dual monostable multivibrator (2 channels), no astable mode |
Dual-channel one-shot timing without free-running oscillator |
