DM74ALS169BN

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: High-speed, TTL-compatible, synchronous 4-bit up/down binary counter
• Package: DIP (Dual In-line Package)
• Essence: Counter IC
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -55°C to +125°C
• Maximum Clock Frequency: 33MHz
• Counting Range: 0 to 15 (binary)

Detailed Pin Configuration

The DM74ALS169BN has a total of 16 pins, which are assigned specific functions as follows:

1. CP (Clock Pulse) - Input pin for clock signal
2. P0-P3 (Parallel Data Inputs) - Input pins for parallel data
3. UD (Up/Down) - Input pin for controlling count direction
4. CE (Count Enable) - Input pin for enabling counting operation
5. MR (Master Reset) - Input pin for resetting the counter
6. TC (Terminal Count) - Output pin indicating terminal count
7. Q0-Q3 (Parallel Outputs) - Output pins for the binary count

Functional Features

• Synchronous Operation: The DM74ALS169BN performs counting operations synchronously with the clock signal.
• Up/Down Counting: The count direction can be controlled by the UD input, allowing both up and down counting.
• Parallel Loading: The counter can be loaded with a new value in parallel through the P0-P3 inputs.
• Terminal Count Output: The TC output goes high when the counter reaches its maximum count value.

Advantages and Disadvantages

Advantages: - High-speed operation suitable for time-critical applications. - TTL compatibility allows easy integration with other digital logic circuits. - Synchronous operation ensures accurate counting.

Disadvantages: - Limited counting range (0 to 15) compared to higher-bit counters. - Requires external components for clock signal generation and power supply regulation.

Working Principles

The DM74ALS169BN is a synchronous up/down counter that operates based on the clock signal provided at the CP input. The count direction is determined by the UD input, where a high level represents up counting and a low level represents down counting. The counter advances its count value on each rising edge of the clock signal when the CE input is enabled. The parallel data inputs (P0-P3) allow loading a new count value into the counter in parallel. The TC output goes high when the counter reaches its maximum count value, indicating a terminal count condition.

Detailed Application Field Plans

The DM74ALS169BN can be used in various applications, including but not limited to:

1. Digital Counters: The IC can be utilized as a component in digital counters used in electronic devices such as frequency dividers, timers, and event counters.
2. Industrial Control Systems: It can be employed in industrial control systems for tasks like position sensing, motion control, and process monitoring.
3. Communication Systems: The IC can be integrated into communication systems for functions like channel selection, frequency synthesis, and data encoding/decoding.

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the DM74ALS169BN are:

1. SN74LS169AN
2. CD74HC169E
3. MC74HC169N
4. 74F169PC

These alternatives offer comparable features and can be used as replacements depending on specific requirements.

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