DM74ALS161BMX

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: 16-pin SOIC (Small Outline Integrated Circuit)
• Essence: The DM74ALS161BMX is a high-performance digital counter designed for various applications requiring counting functionality.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature: -40°C to +85°C
• Maximum Clock Frequency: 125 MHz
• Number of Counting Stages: 4
• Output Type: TTL (Transistor-Transistor Logic) compatible

Detailed Pin Configuration

The DM74ALS161BMX has a total of 16 pins, each serving a specific purpose:

1. CLK (Clock Input)
2. MR (Master Reset Input)
3. CPD (Count Enable Parallel Input)
4. P0 (Parallel Data Input Bit 0)
5. P1 (Parallel Data Input Bit 1)
6. P2 (Parallel Data Input Bit 2)
7. P3 (Parallel Data Input Bit 3)
8. Q0 (Serial Output Bit 0)
9. Q1 (Serial Output Bit 1)
10. Q2 (Serial Output Bit 2)
11. Q3 (Serial Output Bit 3)
12. GND (Ground)
13. NC (No Connection)
14. VCC (Positive Power Supply)
15. CE (Count Enable Input)
16. TC (Terminal Count Output)

Functional Features

• Synchronous operation with a common clock input (CLK)
• Master reset (MR) input for clearing the counter to zero
• Count enable parallel input (CPD) for loading data in parallel
• Serial output (Q0-Q3) for cascading multiple counters
• Terminal count output (TC) indicates when the counter reaches its maximum value

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient counting in time-critical applications
• Synchronous design ensures accurate and reliable counting
• Compact 16-pin SOIC package offers space-saving integration
• TTL compatibility enables easy interfacing with other digital circuits

Disadvantages

• Limited to 4-bit counting, may not be suitable for applications requiring higher bit counts
• Requires an external clock source for proper operation

Working Principles

The DM74ALS161BMX is a synchronous binary counter that operates based on the clock input signal. When the clock signal transitions from low to high, the counter increments by one. The count can be reset to zero using the master reset input or loaded with a specific value through the count enable parallel input. The counter's current value can be obtained through the serial output pins, allowing for cascading multiple counters if needed.

Detailed Application Field Plans

The DM74ALS161BMX finds applications in various fields where digital counting is required. Some potential application areas include:

1. Industrial automation: Counting production units, monitoring machine cycles, etc.
2. Communication systems: Frequency division, channel selection, etc.
3. Test and measurement equipment: Event counting, pulse generation, etc.
4. Consumer electronics: Digital clocks, timers, game consoles, etc.

Detailed and Complete Alternative Models

1. SN74LS161N: Similar 4-bit synchronous binary counter from Texas Instruments
2. CD40161BE: 4-bit synchronous up/down counter from Texas Instruments
3. MC14040B: 12-stage binary ripple counter from ON Semiconductor

These alternative models offer similar functionality and can be considered as substitutes for the DM74ALS161BMX in various applications.

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