CD74HCT4040MT

The CD74HCT4040MT is a high-speed CMOS binary ripple counter manufactured by Texas Instruments. It is part of the 74HCT series, which is designed to be compatible with TTL (Transistor-Transistor Logic) levels while providing the advantages of CMOS technology, such as lower power consumption and higher noise immunity.

Key Features:

1. Counter Functionality: The CD74HCT4040MT is a 12-stage binary ripple counter, which means it can count from 0 to 4095 in binary form. It can be used in various applications where counting is required, such as frequency division, event counting, and digital clocks.

2. Pin Configuration: The device typically comes in a 16-pin dual in-line package (DIP) or surface-mount package (SOIC). The pins include:

   • Clock Input (CLK): This pin receives the clock signal that drives the counting operation.
   • Reset (RST): An active-high input that resets the counter to zero when activated.
   • Output Pins (Q0 to Q11): These pins provide the binary output of the counter, representing the current count value.
   • Enable Pins: Some configurations may include enable pins to control the counting operation.

3. Operating Voltage: The CD74HCT4040MT operates typically at a supply voltage of 4.5V to 5.5V, making it suitable for standard digital logic applications.

4. Speed: The device is designed for high-speed operation, with a maximum clock frequency that can reach several megahertz, depending on the supply voltage and load conditions.

5. Power Consumption: Being a CMOS device, it features low static power consumption, which is advantageous for battery-operated devices and applications where power efficiency is critical.

6. Temperature Range: The CD74HCT4040MT is rated for operation over a wide temperature range, typically from -40°C to +85°C, making it suitable for industrial and automotive applications.

7. Applications: Common applications include digital counters, frequency dividers, timers, and event counters in various electronic systems.

Electrical Characteristics:

• Input High Voltage (VIH): Typically around 2.0V (minimum) for a logic high.
• Input Low Voltage (VIL): Typically around 0.8V (maximum) for a logic low.
• Output High Voltage (VOH): Typically close to the supply voltage when the output is high.
• Output Low Voltage (VOL): Typically close to ground when the output is low.

Summary:

The CD74HCT4040MT from Texas Instruments is a versatile and efficient binary counter that combines the benefits of CMOS technology with TTL compatibility. Its wide range of features and specifications makes it suitable for a variety of digital counting applications in both consumer and industrial electronics.