SN74ALS169BN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: DIP-16 (Dual In-line Package with 16 pins)
• Essence: Counting and sequencing digital signals
• Packaging/Quantity: Available in tubes of 25 or reels of 2,000 units

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 50 MHz
• Maximum Counting Range: 15 (binary)
• Output Current: ±24 mA
• Propagation Delay: 10 ns (typical)

Detailed Pin Configuration

The SN74ALS169BN has a total of 16 pins, which are assigned specific functions:

1. CP (Clock Pulse) - Input pin for clock signal
2. P0-P3 (Parallel Data Inputs) - Four parallel data input pins
3. MR (Master Reset) - Active low input for resetting the counter
4. TC (Terminal Count) - Output pin indicating maximum count reached
5. Q0-Q3 (Parallel Outputs) - Four parallel output pins
6. GND (Ground) - Ground reference pin
7. Q3' (Inverted Output) - Complementary output of Q3
8. CE (Count Enable) - Active high input for enabling counting
9. PE (Parallel Enable) - Active high input for parallel loading
10. PEP (Parallel Enable Prime) - Active high input for parallel loading during the next clock cycle
11. QA-QD (Serial Outputs) - Four serial output pins
12. VCC (Positive Power Supply) - Positive power supply pin

Functional Features

• Synchronous operation: The counter advances on each clock pulse, ensuring accurate counting.
• Parallel and serial outputs: Provides flexibility in data retrieval.
• Master reset: Allows the counter to be reset to zero.
• Count enable: Enables or disables counting based on the input signal.
• Parallel loading: Allows presetting of the counter using parallel inputs.

Advantages and Disadvantages

Advantages: - High-speed operation - Synchronous counting ensures accuracy - Multiple output options for versatile applications - Easy integration into digital circuits

Disadvantages: - Limited counting range (up to 15) - Requires external clock signal for operation - Not suitable for applications requiring higher counting ranges

Working Principles

The SN74ALS169BN is a synchronous 4-bit binary counter. It counts up from 0 to 15 (binary) based on the clock pulses received at the CP pin. The counter can be reset to zero using the MR pin. The count enable (CE) input determines whether the counter advances or remains static. The parallel enable (PE) and parallel enable prime (PEP) inputs allow presetting of the counter using the parallel data inputs (P0-P3). The counter's current value can be retrieved through the parallel outputs (Q0-Q3) or the serial outputs (QA-QD).

Detailed Application Field Plans

The SN74ALS169BN finds applications in various fields, including:

1. Digital electronics: Used as a basic building block for designing digital systems.
2. Communication systems: Counting and sequencing signals in data transmission.
3. Industrial automation: Monitoring and controlling processes that require counting operations.
4. Automotive electronics: Speed measurement, odometer, and other automotive applications.
5. Consumer electronics: Remote control devices, timers, and digital displays.

Detailed and Complete Alternative Models

1. CD74HC163E: 4-bit synchronous binary counter with similar specifications and pin configuration.
2. SN74LS169AN: 4-bit synchronous binary counter with lower power consumption.
3. CD40161BE: 4-bit synchronous binary counter with additional features like asynchronous parallel load.

These alternative models offer similar functionality and can be used as replacements for the SN74ALS169BN in various applications.

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