Overview
The CD4541BEX, produced by Harris Corporation, is a CMOS programmable timer that offers a versatile and reliable solution for timing and frequency division applications. This component is part of the CD4541B series, known for its high voltage rating and robust performance. The CD4541BEX integrates a 16-stage binary counter, an oscillator controlled by external R-C components, an automatic power-on reset circuit, and output control logic. It is designed to operate in various modes, including as a frequency divider or a single-transition timer, making it suitable for a wide range of electronic systems.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package | 14-DIP, PDIP, SOIC, SOP, TSSOP | |
| Temperature Range | -55 to 125 | °C |
| VDD Voltage Range | -0.5V to +20V | V |
| Input Voltage Range | -0.5V to VDD +0.5V | V |
| Oscillator Frequency Range | DC to 100kHz | |
| Output Resistance | Typically 100Ω at VDD = 15V | Ω |
| Propagation Delay Times (Clock to Q) | 3.5 μs (at 5V), 1.25 μs (at 10V), 0.9 μs (at 15V) | μs |
| Maximum Clock Pulse Input Frequency | 1.5 MHz (at 5V), 4 MHz (at 10V), 6 MHz (at 15V) | MHz |
Key Features
- Low symmetrical output resistance, typically 100Ω at VDD = 15V
- Built-in low-power RC oscillator with a frequency range from DC to 100kHz
- External clock input option instead of using the oscillator
- Operates as a 2N frequency divider or as a single-transition timer
- Q/Q select 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
Applications
The CD4541BEX is suitable for various applications requiring precise timing and frequency division. These include:
- Digital timing circuits
- Frequency division in communication systems
- Automotive and industrial control systems
- Medical devices requiring accurate timing
- Consumer electronics with timing requirements
Q & A
- What is the CD4541BEX used for?
The CD4541BEX is a CMOS programmable timer used for timing and frequency division applications. - What are the different package options available for the CD4541BEX?
The CD4541BEX is available in 14-DIP, PDIP, SOIC, SOP, and TSSOP packages. - What is the temperature range of the CD4541BEX?
The temperature range is -55 to 125°C. - Can the CD4541BEX be used with an external clock?
Yes, the CD4541BEX can use an external clock applied to pin 3 instead of the internal oscillator. - What is the maximum clock pulse input frequency for the CD4541BEX?
The maximum clock pulse input frequency is 1.5 MHz at 5V, 4 MHz at 10V, and 6 MHz at 15V. - How does the AUTO RESET feature work?
The AUTO RESET feature disables the oscillator during reset to reduce power dissipation. - What types of loads can the CD4541BEX drive?
The CD4541BEX can drive six low power TTL loads, three low-power Schottky loads, or six HTL loads over the rated temperature range. - Is the CD4541BEX sensitive to electrostatic discharge?
Yes, the CD4541BEX is sensitive to electrostatic discharge and requires proper handling. - What are the propagation delay times for the CD4541BEX?
The propagation delay times are 3.5 μs at 5V, 1.25 μs at 10V, and 0.9 μs at 15V. - Does the CD4541BEX meet any specific industry standards?
Yes, it meets all requirements of JEDEC Standard No. 13B for ‘B’ Series CMOS Devices.
