SN74ALS169BDR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Shift Register
• Characteristics: High-speed, TTL-compatible, synchronous operation
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: 4-bit synchronous binary up/down counter with parallel load
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 50 MHz
• Number of Bits: 4
• Logic Family: ALS (Advanced Low-Power Schottky)
• Output Type: Tri-State
• Package Type: 16-pin SOIC

Detailed Pin Configuration

1. CP (Clock Pulse) - Input
2. P0 (Parallel Data Input) - Input
3. P1 (Parallel Data Input) - Input
4. P2 (Parallel Data Input) - Input
5. P3 (Parallel Data Input) - Input
6. MR (Master Reset) - Input
7. UD (Up/Down Control) - Input
8. PL (Parallel Load) - Input
9. Q0 (Serial Output) - Output
10. Q1 (Serial Output) - Output
11. Q2 (Serial Output) - Output
12. Q3 (Serial Output) - Output
13. GND (Ground) - Ground
14. VCC (Supply Voltage) - Power
15. CE (Chip Enable) - Input
16. TC (Terminal Count) - Output

Functional Features

• Synchronous operation with a common clock pulse
• Up or down counting based on the Up/Down control input
• Parallel loading of data into the counter
• Tri-state outputs for easy interfacing with other devices
• Master reset input for clearing the counter to a known state

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient counting and shifting - TTL compatibility ensures compatibility with a wide range of digital systems - Synchronous operation simplifies timing considerations - Tri-state outputs facilitate bus sharing in multi-device systems

Disadvantages: - Limited to 4-bit counting, may not be suitable for applications requiring larger counters - Requires an external clock source for proper operation - Not suitable for low-power or battery-operated devices due to higher power consumption compared to newer technologies

Working Principles

The SN74ALS169BDR is a synchronous binary up/down counter with parallel load. It operates based on a common clock pulse, which synchronizes the counting and shifting operations. The Up/Down control input determines the direction of counting, while the Parallel Load input allows for loading data into the counter in parallel.

The counter has four parallel data inputs (P0-P3) and four serial outputs (Q0-Q3). The outputs represent the current count value and can be used for further processing or display. The Master Reset input clears the counter to a known state, and the Terminal Count output indicates when the counter reaches its maximum count value.

Detailed Application Field Plans

The SN74ALS169BDR is commonly used in various applications that require counting or shifting operations. Some specific application fields include:

1. Digital Communication Systems: The counter can be used for frequency division, synchronization, or data packetization in communication systems.
2. Industrial Automation: It finds applications in controlling and monitoring processes, such as conveyor belt speed control or production line sequencing.
3. Test and Measurement Equipment: The counter can be utilized for event counting, time interval measurement, or signal generation in test and measurement instruments.
4. Automotive Electronics: It can be employed in automotive systems for tasks like gear position detection, odometer reading, or engine RPM measurement.

Detailed and Complete Alternative Models

1. SN74ALS161BDR: 4-bit synchronous binary counter without parallel load capability.
2. SN74ALS163BDR: 4-bit synchronous binary counter with parallel load and asynchronous reset.
3. SN74ALS299N: 8-bit universal shift/storage register with tri-state outputs.
4. SN74ALS574N: 8-bit D-type flip-flop with tri-state outputs.

These alternative models offer similar functionality to the SN74ALS169BDR but may have different features or pin configurations that suit specific application requirements.

In conclusion, the SN74ALS169BDR is a versatile 4-bit synchronous binary up/down counter with parallel load. Its high-speed operation, TTL compatibility, and various functional features make it suitable for a wide range of applications in digital systems.