CD74HC4040E

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Divider
• Characteristics: High-speed, 12-stage binary ripple counter/divider
• Package: PDIP (Plastic Dual In-line Package)
• Essence: The CD74HC4040E is a high-speed CMOS counter/divider IC that can be used in various applications requiring frequency division or time measurement.
• Packaging/Quantity: Available in tubes of 25 pieces or reels of 2,000 pieces.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -55°C to +125°C
• Propagation Delay: 13 ns (typical) at 4.5V
• Maximum Clock Frequency: 50 MHz
• Number of Stages: 12
• Output Current: ±5.2 mA
• Input Capacitance: 3 pF
• Output Capacitance: 8 pF

Detailed Pin Configuration

The CD74HC4040E has a total of 16 pins arranged as follows:

__ __ Q1 |1 \__/ 16| VCC Q2 |2 15| Q0 Q3 |3 14| MR (Master Reset) Q4 |4 13| CP (Clock Pulse) Q5 |5 12| CE (Clock Enable) Q6 |6 11| GND Q7 |7 10| Q11 Q8 |8 9| Q12 ----------

Functional Features

• High-speed operation allows for efficient frequency division.
• Can be used as a programmable timer or frequency divider.
• Master Reset (MR) pin allows for synchronous reset of the counter.
• Clock Enable (CE) pin enables or disables the clock input.
• Outputs (Q0-Q12) provide binary division of the input clock signal.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient frequency division. - Wide operating voltage range (2V to 6V) provides flexibility in various applications. - Compact PDIP package allows for easy integration into circuit designs. - Low power consumption.

Disadvantages: - Limited number of stages (12) may not be suitable for applications requiring higher division ratios. - Not suitable for high-frequency applications above 50 MHz.

Working Principles

The CD74HC4040E is a ripple counter/divider IC that operates by dividing an input clock signal by powers of 2. The counter advances on each rising edge of the clock pulse when the Clock Enable (CE) pin is high. The outputs (Q0-Q12) represent the binary division of the input clock signal.

The Master Reset (MR) pin allows for synchronous reset of the counter, setting all outputs to low. This feature can be used to initialize the counter to a specific state.

Detailed Application Field Plans

The CD74HC4040E can be used in various applications, including:

1. Frequency Division: Dividing an input clock signal to obtain lower frequencies for different purposes.
2. Time Measurement: Measuring time intervals by counting clock pulses.
3. Programmable Timer: Configuring the counter to generate specific time delays.
4. Digital Circuits: Building digital circuits that require frequency division or time measurement capabilities.

Detailed and Complete Alternative Models

Some alternative models to the CD74HC4040E include:

1. CD4020BE: 14-stage binary ripple counter/divider with similar characteristics and pin configuration.
2. CD4060BE: 14-stage ripple carry binary counter/divider with built-in oscillator and programmable timer capabilities.

These alternative models offer similar functionality and can be used as replacements depending on specific requirements.

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