CD74HCT161M

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter
• Characteristics: High-speed, CMOS logic, synchronous operation
• Package: 16-pin SOIC (Small Outline Integrated Circuit)
• Essence: The CD74HCT161M is a high-speed synchronous counter IC that can count up or down depending on the input signals.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: HCT (High-Speed CMOS)
• Number of Stages: 4-bit binary counter
• Clock Input: Synchronous clock input (CP)
• Count Enable Input: Asynchronous count enable input (CE)
• Parallel Load Input: Asynchronous parallel load input (PL)
• Reset Input: Asynchronous reset input (MR)
• Outputs: Four individual outputs (Q0-Q3)

Pin Configuration

The CD74HCT161M has a 16-pin SOIC package with the following pin configuration:

__ __ Q0 |1 \__/ 16| VCC Q1 |2 15| CE Q2 |3 14| CP Q3 |4 13| MR PL |5 12| GND CP |6 11| Q3 CE |7 10| Q2 MR |8 9| Q1 ----------

Functional Features

• Synchronous operation allows precise counting based on the clock signal.
• Can count up or down based on the input signals.
• Asynchronous parallel load input enables loading a specific count value.
• Asynchronous reset input allows resetting the counter to a known state.

Advantages and Disadvantages

Advantages

• High-speed operation suitable for time-critical applications.
• CMOS logic provides low power consumption.
• Synchronous operation ensures accurate counting.

Disadvantages

• Limited number of stages (4-bit) may not be sufficient for complex counting tasks.
• Requires external clock signal for proper operation.

Working Principles

The CD74HCT161M is a synchronous counter that operates based on the clock signal (CP). When the count enable input (CE) is high, the counter increments or decrements based on the clock signal. The parallel load input (PL) allows loading a specific count value asynchronously. The reset input (MR) resets the counter to its initial state.

Detailed Application Field Plans

The CD74HCT161M can be used in various applications that require counting functionality, such as:

1. Digital frequency dividers
2. Event counters
3. Timekeeping circuits
4. Industrial automation systems
5. Traffic light control systems

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the CD74HCT161M are:

1. SN74HCT161 - 4-bit synchronous binary counter
2. CD40161B - 4-bit synchronous programmable counter
3. MC14516B - 4-bit synchronous up/down counter

These alternatives offer different features and specifications, allowing users to choose the most suitable option for their specific requirements.

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