SN74AS161DRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The SN74AS161DRE4 is a versatile counter IC that can be used in various applications requiring counting functionality.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: AS (Advanced Schottky)
• Number of Bits: 4
• Clock Frequency: Up to 25MHz
• Propagation Delay: 9ns (typical)

Detailed Pin Configuration

The SN74AS161DRE4 has a total of 16 pins. Here is the detailed pin configuration:

1. CLK (Clock Input)
2. MR (Master Reset Input)
3. CPD (Count Enable Parallel Input)
4. A (Binary Input A)
5. B (Binary Input B)
6. C (Binary Input C)
7. D (Binary Input D)
8. QA (Output Q0)
9. QB (Output Q1)
10. QC (Output Q2)
11. QD (Output Q3)
12. GND (Ground)
13. VCC (Positive Power Supply)
14. CE (Count Enable Input)
15. CET (Count Enable Trickle Input)
16. TC (Terminal Count Output)

Functional Features

• Synchronous operation with a common clock input (CLK)
• Master reset (MR) for clearing the counter to zero
• Count enable parallel input (CPD) for loading a specific count value
• Count enable (CE) and count enable trickle (CET) inputs for controlling the counting operation
• Terminal count (TC) output indicating when the counter reaches its maximum count value

Advantages and Disadvantages

Advantages: - High-speed operation suitable for time-critical applications - Synchronous design ensures accurate counting - Versatile functionality with various control inputs - Compact SOIC package allows for easy integration into circuit designs

Disadvantages: - Limited to 4-bit counting, may not be suitable for applications requiring larger counters - Requires an external clock source for operation

Working Principles

The SN74AS161DRE4 is a synchronous counter that counts in binary from 0 to 15. It operates based on the input clock signal (CLK) and increments its count value on each rising edge of the clock. The counter can be reset to zero using the master reset (MR) input or loaded with a specific count value using the count enable parallel input (CPD). The count enable (CE) and count enable trickle (CET) inputs control the counting operation.

Detailed Application Field Plans

The SN74AS161DRE4 can be used in various applications that require counting functionality. Some potential application fields include:

1. Digital frequency dividers
2. Event counters in electronic systems
3. Timekeeping circuits
4. Industrial automation systems
5. Communication equipment
6. Test and measurement instruments

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the SN74AS161DRE4:

1. CD40161BE - 4-bit synchronous binary counter IC
2. MC14060B - 14-stage binary ripple counter IC
3. 74HC163N - 4-bit binary counter with synchronous reset

These alternative models provide different features and specifications, allowing users to choose the most suitable option for their specific requirements.

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