Overview
The MC14521BCPG, produced by Onsemi, is a 24-stage frequency divider integrated circuit. It consists of a chain of 24 flip-flops and features an input circuit that supports three modes of operation: as a crystal oscillator, an RC oscillator, or as an input buffer for an external oscillator. This versatility makes it suitable for a wide range of timing and frequency division applications. The device operates over a broad supply voltage range of 3V to 18V, enhancing its adaptability in various electronic systems.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Logic Family | CMOS | Minimum Operating Temperature (°C) | -55 |
| Supply Voltage Range | 3.0 Vdc to 18 Vdc | Maximum Operating Temperature (°C) | +125 |
| Mounting Style | Through Hole | Package/Case | 16-DIP, SOIC-16 (Pb-Free) |
| Output Voltage “0” Level | 0.05 V (VDD = 5V, 10V, 15V) | Output Rise and Fall Time | 100 ns (CL = 50 pF, TA = 25°C) |
| Propagation Delay Time Clock to Q24 | 4415 ns (CL = 50 pF, TA = 25°C) | Resonant Frequency (Crystal Oscillator) | Up to 6.2 kHz |
Key Features
- All stages are resettable.
- Reset disables the RC oscillator for low standby power drain.
- RC and crystal oscillator outputs are capable of driving external loads.
- Test mode to reduce test time.
- VDD′ and VSS′ pins brought out on crystal oscillator inverter to allow the connection of external resistors for low-power operation.
- Capable of driving two low-power TTL loads or one low-power Schottky TTL load over the rated temperature range.
- Pb-Free packages are available.
Applications
The MC14521BCPG is versatile and can be used in a variety of applications, including:
- Timing and frequency division circuits.
- Telecommunications equipment.
- Automotive systems (with NLV prefix for AEC-Q100 qualified parts).
- Industrial control systems.
- Consumer electronics requiring precise timing functions.
Q & A
- Q: What are the main modes of operation for the MC14521BCPG?
A: The MC14521BCPG can operate as a crystal oscillator, an RC oscillator, or as an input buffer for an external oscillator.
- Q: What is the supply voltage range for the MC14521BCPG?
A: The supply voltage range is from 3.0 Vdc to 18 Vdc.
- Q: What types of packages are available for the MC14521BCPG?
A: The device is available in 16-DIP and SOIC-16 (Pb-Free) packages.
- Q: How does the reset function affect the RC oscillator?
A: The reset function disables the RC oscillator, which helps in reducing standby power drain.
- Q: What is the significance of VDD′ and VSS′ pins on the crystal oscillator inverter?
A: These pins allow the connection of external resistors for low-power operation.
- Q: Can the MC14521BCPG drive external loads?
A: Yes, the RC and crystal oscillator outputs are capable of driving external loads.
- Q: What is the maximum operating temperature for the MC14521BCPG?
A: The maximum operating temperature is +125°C.
- Q: Is the MC14521BCPG suitable for automotive applications?
A: Yes, with the NLV prefix, it is AEC-Q100 qualified and suitable for automotive and other applications requiring unique site and control change requirements.
- Q: How can I ensure the authenticity of the MC14521BCPG from Onsemi?
A: Ensure you purchase from authorized distributors or suppliers that rigorously test and verify the credentials of original Onsemi manufacturers and authorized agents.
- Q: What kind of warranty is offered for the MC14521BCPG?
A: A 1-year warranty is typically offered, covering defects in materials and workmanship under normal use.
