Overview
The CD4541BMT is a CMOS programmable timer produced by Texas Instruments. This component is part of the CD4541B series, which features high voltage types with a 20V rating. The CD4541BMT is packaged in a 14-pin SOIC (Small Outline Integrated Circuit) package and operates over a wide temperature range of -55°C to 125°C. It is designed to provide flexible timing solutions with its built-in low-power RC oscillator and various output modes.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Operating Temperature Range | -55 to 125 | °C |
| Supply Voltage | 3 to 20 | V |
| Oscillator Frequency Range | DC to 100kHz | |
| Output Resistance (Typical at VDD = 15V) | 100Ω | |
| Maximum Clock Pulse Input Frequency | Up to 6 MHz at 15V | |
| Input Low Voltage (VIL) | Up to 1.5V at 5V, 3V at 10V, 4V at 15V | V |
| Input High Voltage (VIH) | Down to 3.5V at 5V, 7V at 10V, 11V at 15V | V |
| Package Type | 14-pin SOIC | |
| RoHS Status | ROHS3 Compliant |
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 can be used instead of the oscillator
- Operates as a 2^N 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
- Operates with very slow clock rise and fall times
- 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
- 100% tested for quiescent current at 20V
- Meets all requirements of JEDEC Standard No. 13B, “Standard Specifications for Description of ‘B’ Series CMOS Devices”
Applications
The CD4541BMT is versatile and can be used in various timing and counting applications. It is suitable for use in digital timers, frequency dividers, and single-transition timers. The component's ability to operate over a wide temperature range and its low power consumption make it ideal for industrial, automotive, and consumer electronics where precise timing is required.
Q & A
- What is the operating temperature range of the CD4541BMT?
The CD4541BMT operates over a temperature range of -55°C to 125°C. - What is the supply voltage range for the CD4541BMT?
The supply voltage range is from 3V to 20V. - What is the oscillator frequency range of the CD4541BMT?
The oscillator frequency range is from DC to 100kHz. - Can an external clock be used with the CD4541BMT?
Yes, an external clock can be applied to pin 3 instead of using the built-in oscillator. - What types of loads can the CD4541BMT drive?
The CD4541BMT can drive six low power TTL loads, three low-power Schottky loads, or six HTL loads over the rated temperature range. - How does the AUTO RESET feature work?
The AUTO RESET feature disables the oscillator during reset to reduce power dissipation. It is enabled by setting the AUTO RESET input (pin 5) to logic “0” and turning power on. - What is the maximum clock pulse input frequency for the CD4541BMT?
The maximum clock pulse input frequency is up to 6 MHz at 15V. - Is the CD4541BMT RoHS compliant?
Yes, the CD4541BMT is ROHS3 compliant. - How do I select the output stage for the CD4541BMT?
The desired output stage (8th, 10th, 13th, or 16th counter stage) is chosen using time-select inputs A and B. - What is the package type for the CD4541BMT?
The CD4541BMT is packaged in a 14-pin SOIC (Small Outline Integrated Circuit).
