Overview
The CD4541BE, produced by Texas Instruments, is a CMOS programmable timer that belongs to the 4000 Series CMOS Logic Family. This device features 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 over a wide range of temperatures and supply voltages, making it versatile for various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | PDIP |
| Pin Count | 14 |
| Minimum Operating Supply Voltage | 3 V |
| Maximum Operating Supply Voltage | 18 V |
| Minimum Operating Temperature | -55 °C |
| Maximum Operating Temperature | +125 °C |
| Maximum Quiescent Current | 0.1 mA |
| Maximum Low Level Output Current | 12.6 mA |
| Maximum High Level Output Current | -12.6 mA |
| Maximum Propagation Delay Time @ Maximum CL | 18000 ns @ 5 V |
| Dimensions | 19.3 x 6.35 x 4.57 mm |
Key Features
- Low Symmetrical Output Resistance, typically 100 Ω at VDD = 15V
- Built-In Low-Power RC Oscillator with a frequency range from DC to 100 kHz
- External Clock (Applied to Pin 3) 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 the 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 CD4541BE is suitable for a variety of applications requiring precise timing and control. These include:
- Digital timing circuits where a programmable timer is necessary
- Frequency dividers and single-transition timers
- Circuits requiring low power consumption and high temperature stability
- Automotive and industrial control systems
- Medical devices and other equipment needing reliable timing functions
Q & A
- What is the CD4541BE? The CD4541BE is a CMOS programmable timer from Texas Instruments, part of the 4000 Series CMOS Logic Family.
- What are the key components of the CD4541BE? It includes a 16-stage binary counter, an oscillator controlled by external R-C components, an automatic power-on reset circuit, and output control logic.
- What is the operating temperature range of the CD4541BE? The device operates from -55 °C to +125 °C.
- What are the minimum and maximum operating supply voltages for the CD4541BE? The minimum operating supply voltage is 3 V, and the maximum is 18 V.
- Can the CD4541BE be used with an external clock? Yes, an external clock can be applied to Pin 3 instead of using the built-in oscillator.
- What types of loads can the CD4541BE drive? It can drive six low power TTL loads, three low-power Schottky loads, or six HTL loads over the rated temperature range.
- Does the CD4541BE have any power-saving features? Yes, the AUTO or MASTER RESET can disable the oscillator during reset to reduce power dissipation.
- What are the dimensions of the CD4541BE in PDIP package? The dimensions are 19.3 x 6.35 x 4.57 mm.
- Is the CD4541BE RoHS compliant? Yes, the CD4541BE is RoHS compliant.
- What are some common applications for the CD4541BE? It is used in digital timing circuits, frequency dividers, single-transition timers, and in automotive and industrial control systems.
