SN74LS161ADG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter
• Characteristics:
  • 4-bit synchronous binary counter
  • Low-power Schottky (LS) technology
  • Advanced CMOS logic
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The SN74LS161ADG4 is a 4-bit synchronous binary counter designed for various applications that require counting functionality.
• Packaging/Quantity: The SN74LS161ADG4 is available in a standard SOIC package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -40°C to 85°C
• Maximum Clock Frequency: 30 MHz
• Number of Counting Stages: 4
• Input Type: Synchronous
• Output Type: Parallel
• Propagation Delay: 15 ns (typical)

Detailed Pin Configuration

The SN74LS161ADG4 has a total of 16 pins, each serving a specific purpose. Here is the detailed pin configuration:

1. CLK (Clock Input)
2. MR (Master Reset Input)
3. CPD (Count Enable Parallel Input)
4. P0 (Parallel Output Bit 0)
5. P1 (Parallel Output Bit 1)
6. P2 (Parallel Output Bit 2)
7. P3 (Parallel Output Bit 3)
8. TC (Terminal Count Output)
9. GND (Ground)
10. QA (Flip-Flop Output A)
11. QB (Flip-Flop Output B)
12. QC (Flip-Flop Output C)
13. QD (Flip-Flop Output D)
14. VCC (Supply Voltage)
15. CE (Count Enable Input)
16. PE (Parallel Enable Input)

Functional Features

• Synchronous operation ensures accurate counting based on the clock input.
• Master Reset (MR) input allows resetting the counter to its initial state.
• Count Enable Parallel (CPD) input enables parallel loading of a specific count value.
• Terminal Count (TC) output indicates when the counter reaches its maximum count value.
• Flip-Flop outputs (QA, QB, QC, QD) provide the current count value in parallel.

Advantages and Disadvantages

Advantages: - Low-power consumption due to LS technology. - High-speed operation with advanced CMOS logic. - Compact SOIC package for space-saving designs. - Accurate and reliable counting functionality.

Disadvantages: - Limited number of counting stages (4 bits). - Requires an external clock source for operation.

Working Principles

The SN74LS161ADG4 operates as a synchronous binary counter. It counts up or down based on the clock input and produces the count value in parallel at the flip-flop outputs. The counter can be reset to its initial state using the Master Reset (MR) input. The Count Enable Parallel (CPD) input allows loading a specific count value in parallel. The Terminal Count (TC) output indicates when the counter reaches its maximum count value.

Detailed Application Field Plans

The SN74LS161ADG4 is widely used in various applications that require counting functionality, such as:

1. Digital frequency dividers
2. Event counters
3. Time delay circuits
4. Industrial automation systems
5. Communication equipment
6. Electronic gaming devices
7. Automotive electronics
8. Test and measurement instruments

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the SN74LS161ADG4:

1. CD74HC161E
2. MC74HC161N
3. 74F161APC
4. SN54LS161AJ

These models can be considered as alternatives based on their specifications and pin compatibility.

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