Overview
The CD4541BCM is a programmable timer IC produced by onsemi. It is designed with a 16-stage binary counter, an integrated oscillator, output control logic, and a special power-on reset circuit. This device is versatile and can operate across a wide supply voltage range of 3V to 15V and over a broad temperature range of -55°C to 125°C. The CD4541BCM is packaged in a 14-SOIC (Small Outline Integrated Circuit) case, making it suitable for surface mount applications. Although the part is currently marked as obsolete, it remains a significant component in various legacy systems and applications.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | CD4541BCM |
| Manufacturer | onsemi |
| Category | Clock & Timer ICs |
| Subcategory | Programmable Timers and Oscillators |
| Type | Programmable Timer |
| Count | 65536 |
| Frequency | DC to 100kHz |
| Voltage - Supply | 3V ~ 15V |
| Operating Temperature | -55°C ~ 125°C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
Key Features
- 16-stage binary counter with digitally controlled division ratios (2^8, 2^10, 2^13, or 2^16).
- Built-in low power RC oscillator with ±2% accuracy over temperature range and ±10% supply accuracy.
- External clock option: can be used instead of the integrated oscillator.
- Operates as a 2N frequency divider or as a single-transition timer.
- Q/Q select output control pin provides output logic level flexibility.
- AUTO or MASTER RESET disables oscillator during reset to reduce power dissipation.
- Capable of driving six low power TTL loads, three low-power Schottky loads, or six HTL loads over the rated temperature range.
- Symmetrical output characteristics and high noise immunity.
Applications
The CD4541BCM is suitable for a variety of applications requiring precise timing and control. These include:
- Industrial control systems where accurate timing is crucial.
- Automotive systems that require robust and reliable timing functions.
- Medical devices needing precise timing for various operations.
- Consumer electronics such as appliances and gadgets that require programmable timing.
- Legacy systems where the CD4541BCM is already integrated and needs to be maintained or replaced.
Q & A
- What is the supply voltage range of the CD4541BCM?
The supply voltage range of the CD4541BCM is 3V to 15V.
- What is the operating temperature range of the CD4541BCM?
The operating temperature range is -55°C to 125°C.
- What types of division ratios are available on the CD4541BCM?
The available division ratios are 2^8, 2^10, 2^13, or 2^16.
- Can the CD4541BCM use an external clock instead of the integrated oscillator?
- What is the purpose of the Q/Q select output control pin?
The Q/Q select output control pin provides flexibility in choosing the output logic level.
- How does the power-on reset circuit function in the CD4541BCM?
The power-on reset circuit initializes the timing and counter when power is turned on, with no additional static power consumption, and functions across the full voltage range whether the reset is enabled or disabled.
- What is the maximum input leakage current at 15V over the full temperature range?
The maximum input leakage current is 1 µA at 15V over the full temperature range.
- Can the CD4541BCM drive TTL loads?
- What is the package type of the CD4541BCM?
The CD4541BCM is packaged in a 14-SOIC (Small Outline Integrated Circuit) case.
- Is the CD4541BCM RoHS compliant?
The RoHS status of the CD4541BCM is not explicitly stated, but it is mentioned as lead-free and RoHS compliant in some sources.
