DM74ALS163BN

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Divider
• Characteristics: High-speed, TTL Logic
• Package: DIP (Dual In-line Package)
• Essence: Binary Counter
• Packaging/Quantity: Tube/25 pieces per tube

Specifications

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -55°C to +125°C
• Maximum Clock Frequency: 33MHz
• Number of Stages: 4-bit binary counter
• Output Type: TTL compatible

Detailed Pin Configuration

1. CLK (Clock Input)
2. MR (Master Reset Input)
3. CPD (Count Enable Parallel Input)
4. P0-P3 (Parallel Data Inputs)
5. Q0-Q3 (Flip-Flop Outputs)
6. GND (Ground)
7. Q3 (Ripple Carry Output)
8. VCC (Supply Voltage)

Functional Features

• High-speed operation: The DM74ALS163BN is designed for high-frequency applications, with a maximum clock frequency of 33MHz.
• Synchronous counting: The counter advances on each rising edge of the clock input, ensuring accurate and synchronized counting.
• Parallel load capability: The counter can be loaded with a preset value using the parallel data inputs (P0-P3) and the count enable parallel input (CPD).
• Ripple carry output: The Q3 output serves as a ripple carry output, allowing cascading multiple counters for larger counting ranges.

Advantages

• Fast counting speed: The DM74ALS163BN operates at high frequencies, making it suitable for time-critical applications.
• Versatile functionality: With its parallel load capability and ripple carry output, the counter offers flexibility in various counting scenarios.
• TTL compatibility: The output signals are TTL compatible, ensuring compatibility with other TTL logic devices.

Disadvantages

• Limited counting range: The DM74ALS163BN is a 4-bit counter, which restricts the maximum count to 15 (1111 in binary).
• Power consumption: As a TTL logic device, it consumes more power compared to modern CMOS counterparts.

Working Principles

The DM74ALS163BN is a synchronous 4-bit binary counter. It counts up on each rising edge of the clock input (CLK) when the count enable parallel input (CPD) is high. The counter can be loaded with a preset value by applying the desired binary data to the parallel inputs (P0-P3) and enabling the CPD input. The Q0-Q3 outputs represent the current count, while the Q3 output serves as a ripple carry output for cascading multiple counters.

Detailed Application Field Plans

• Frequency division: The DM74ALS163BN can be used to divide an input clock frequency by various factors, depending on the preset value or the number of cascaded counters.
• Event counting: It can be employed to count events or pulses in applications such as digital timers, frequency meters, or industrial control systems.
• Address generation: The counter's parallel load capability allows it to generate address sequences for memory access in microprocessors or digital systems.

Detailed and Complete Alternative Models

• SN74LS163A: Similar 4-bit synchronous binary counter with comparable specifications and pin configuration.
• CD40163B: CMOS version of the 4-bit synchronous binary counter, offering lower power consumption and wider supply voltage range.

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