Overview
The CD4541BPWRG4 is a CMOS programmable timer produced by Texas Instruments. This component is part of the CD4541B series and is designed for high-voltage applications, with a rating of up to 20V. It features a 16-stage binary counter, an oscillator controlled by external R-C components, an automatic power-on reset circuit, and output control logic. The timer can operate as a 2^N frequency divider or as a single-transition timer, offering flexibility in various timing applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | TSSOP | |
| Pins | 14 | |
| Operating Temperature Range | -55 to 125 | °C |
| VCC (Min) | 3 | V |
| VCC (Max) | 18 | V |
| Oscillator Frequency Range | DC to 100kHz | |
| Output Drive (IOL/IOH) (Max) | 4/-4 mA | |
| ICC @ Nom Voltage (Max) | 0.3 mA | |
| Maximum Clock Pulse Input Frequency | Up to 6 MHz at VDD = 15V |
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 (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 CD4541BPWRG4 is suitable for a variety of timing and counting applications, including:
- Frequency division and timing circuits
- Single-transition timers
- Automotive and industrial control systems where high voltage tolerance is required
- Consumer electronics needing precise timing functions
- Medical devices requiring reliable and precise timing
Q & A
- What is the operating temperature range of the CD4541BPWRG4?
The operating temperature range is -55°C to 125°C.
- What is the maximum voltage rating for the CD4541BPWRG4?
The maximum voltage rating is 18V.
- Can the CD4541BPWRG4 use an external clock instead of the built-in oscillator?
- What types of loads can the CD4541BPWRG4 drive?
The CD4541BPWRG4 can drive six low power TTL loads, three low-power Schottky loads, or six HTL loads over the rated temperature range.
- How is the output logic level flexibility achieved in the CD4541BPWRG4?
The output logic level flexibility is achieved through the Q/Q Select feature.
- What is the purpose of the AUTO RESET input in the CD4541BPWRG4?
The AUTO RESET input initializes timing by setting it to logic '0' and turning power on, but it consumes appreciable power and should be disabled for low-power operation.
- Can the CD4541BPWRG4 operate with slow clock rise and fall times?
- What are the parametric ratings for the CD4541BPWRG4?
The CD4541BPWRG4 has parametric ratings for 5V, 10V, and 15V.
- Is the CD4541BPWRG4 compliant with any industry standards?
- What is the package type and pin count of the CD4541BPWRG4?
The package type is TSSOP with 14 pins.
