SN74ALS169BNSR

Product Overview

• Category: Integrated Circuit
• Use: Counter/Divider
• Characteristics: High-speed, synchronous, 4-bit binary up/down counter
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: A versatile counter/divider IC with synchronous operation and high-speed capabilities
• 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: 100MHz
• Number of Bits: 4
• Logic Family: ALS (Advanced Low-Power Schottky)

Detailed Pin Configuration

The SN74ALS169BNSR has a total of 16 pins, each serving a specific function:

1. CP (Clock Pulse) - Input pin for clock signal
2. P0 (Parallel Data Input) - Input pin for the least significant bit (LSB)
3. P1 (Parallel Data Input) - Input pin for the second least significant bit
4. P2 (Parallel Data Input) - Input pin for the third least significant bit
5. P3 (Parallel Data Input) - Input pin for the most significant bit (MSB)
6. UD (Up/Down) - Input pin for selecting count direction (up or down)
7. MR (Master Reset) - Input pin for resetting the counter
8. Q0 (Serial Output) - Output pin for the LSB
9. Q1 (Serial Output) - Output pin for the second least significant bit
10. Q2 (Serial Output) - Output pin for the third least significant bit
11. Q3 (Serial Output) - Output pin for the MSB
12. GND (Ground) - Ground reference pin
13. NC (No Connection) - Pin with no electrical connection
14. VCC (Supply Voltage) - Positive supply voltage pin
15. CE (Clock Enable) - Input pin for enabling clock signal
16. TC (Terminal Count) - Output pin indicating terminal count condition

Functional Features

• Synchronous operation allows precise control of counting sequence
• High-speed capabilities enable efficient counting in time-critical applications
• Up/Down input provides flexibility to count up or down based on the input signal
• Master Reset input allows resetting the counter to a known state
• Terminal Count output indicates when the counter reaches its maximum or minimum value

Advantages and Disadvantages

Advantages: - High-speed operation enables rapid counting in various applications - Synchronous operation ensures accurate counting sequence - Versatile up/down functionality adds flexibility to the counter's usage

Disadvantages: - Limited to 4-bit counting, may not be suitable for applications requiring larger counters - Requires an external clock signal for proper operation

Working Principles

The SN74ALS169BNSR is a synchronous counter that operates based on the clock signal provided at the CP input. The counter can count up or down based on the input signal at the UD pin. The parallel data inputs (P0-P3) determine the initial count value.

When enabled by the CE input, the counter advances one count per clock cycle in the selected direction (up or down). The terminal count output (TC) indicates when the counter reaches its maximum or minimum value.

The master reset input (MR) resets the counter to its initial state when activated. The serial outputs (Q0-Q3) provide the current count value in a serial format.

Detailed Application Field Plans

The SN74ALS169BNSR finds applications in various fields, including:

1. Digital Counters: Used as a component in digital counters for applications such as frequency division, event counting, and timekeeping.
2. Industrial Automation: Employed in industrial automation systems for position control, motion detection, and process monitoring.
3. Communication Systems: Utilized in communication systems for data packet routing, channel selection, and synchronization purposes.
4. Test and Measurement Equipment: Integrated into test and measurement equipment for signal analysis, waveform generation, and frequency synthesis.

Detailed and Complete Alternative Models

1. SN74ALS161BNSR: 4-bit synchronous binary counter with parallel load capability.
2. SN74ALS163BNSR: 4-bit synchronous binary counter with asynchronous reset functionality.
3. SN74ALS191BNSR: 4-bit synchronous up/down binary counter with parallel load capability and presettable options.

These alternative models offer similar functionalities to the SN74ALS169BNSR, providing flexibility in choosing the most suitable counter for specific applications.

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