MC74AC161N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: DIP (Dual In-line Package)
• Essence: The MC74AC161N is a versatile counter IC that can be used in various applications requiring counting functionality.
• Packaging/Quantity: Available in tubes or reels, with varying quantities depending on the supplier.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: AC
• Number of Bits: 4
• Clock Input: Synchronous
• Reset Input: Asynchronous
• Output Type: Standard

Detailed Pin Configuration

The MC74AC161N has a total of 16 pins. Here is the detailed pin configuration:

1. Clock Enable (CE)
2. Clock (CLK)
3. Parallel Load (PL)
4. Down/Up (D/U)
5. Carry Out (CO)
6. Data Inputs (D0-D3)
7. Ripple Clock (RC)
8. Carry In (CI)
9. Output Enable (OE)
10. Outputs (Q0-Q3)
11. Ground (GND)
12. VCC (+5V)

Functional Features

• Synchronous Counting: The MC74AC161N performs synchronous counting, ensuring accurate and reliable results.
• Parallel Load: Allows for loading data into the counter in parallel, providing flexibility in programming.
• Down/Up Control: The D/U input determines whether the counter counts up or down.
• Carry Out and Carry In: Enables cascading multiple counters for higher bit count applications.
• Output Enable: Allows for enabling or disabling the outputs, providing control over when the count is displayed.

Advantages and Disadvantages

Advantages: - High-speed operation - Versatile counter for various applications - Synchronous counting ensures accuracy - Parallel load capability for flexible programming

Disadvantages: - Limited to 4-bit counting, may not be suitable for applications requiring higher bit counts - Requires external clock signal for operation

Working Principles

The MC74AC161N operates based on synchronous counting principles. The clock input (CLK) triggers the counter to increment or decrement based on the state of the Down/Up (D/U) input. The counter can be loaded with data in parallel using the Parallel Load (PL) input. The Carry Out (CO) and Carry In (CI) pins allow for cascading multiple counters to achieve higher bit counts.

Detailed Application Field Plans

The MC74AC161N can be used in various applications that require counting functionality, such as:

1. Digital frequency dividers
2. Event counters
3. Industrial automation systems
4. Traffic light controllers
5. Timers and clocks
6. Sequential logic circuits

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the MC74AC161N:

1. SN74LS161N
2. CD40161BE
3. 74HC161N
4. CD74HC161E
5. HEF40161BP

These alternative models can be considered based on specific requirements and availability.

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