SN74AS169ADR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Divider
• Characteristics: High-speed, synchronous, 4-bit binary up/down counter
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Reliable and efficient digital counter/divider IC
• 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: AS (Advanced Schottky)

Detailed Pin Configuration

The SN74AS169ADR has a total of 16 pins, each serving a specific function:

1. CLK (Clock Input)
2. P0 (Parallel Data Input Bit 0)
3. P1 (Parallel Data Input Bit 1)
4. P2 (Parallel Data Input Bit 2)
5. P3 (Parallel Data Input Bit 3)
6. UD (Up/Down Control Input)
7. MR (Master Reset Input)
8. Q0 (Serial Output Bit 0)
9. Q1 (Serial Output Bit 1)
10. Q2 (Serial Output Bit 2)
11. Q3 (Serial Output Bit 3)
12. GND (Ground)
13. VCC (Positive Power Supply)
14. CE (Clock Enable Input)
15. CTEN (Count Enable Input)
16. TC (Terminal Count Output)

Functional Features

• Synchronous operation with a common clock input (CLK)
• Up or down counting based on the state of the Up/Down control input (UD)
• Master reset (MR) for clearing the counter to zero
• Serial output (Q0-Q3) for cascading multiple counters
• Terminal count output (TC) indicates when the counter reaches its maximum value

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient counting in time-critical applications - Synchronous design ensures accurate and reliable counting - Versatile up/down control enables flexible counting sequences - Compact SOIC package offers space-saving integration

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

Working Principles

The SN74AS169ADR is a synchronous counter/divider IC that operates based on the input clock signal. The counter can count up or down depending on the state of the Up/Down control input. When the counter reaches its maximum value, the terminal count output is activated. The master reset input allows the counter to be cleared to zero at any time.

Detailed Application Field Plans

The SN74AS169ADR is commonly used in various applications, including:

1. Frequency division: Dividing high-frequency signals into lower frequencies for further processing.
2. Event counting: Keeping track of the number of occurrences of specific events.
3. Digital communication systems: Implementing timing and synchronization functions.
4. Industrial automation: Counting pulses from sensors or controlling sequential operations.

Detailed and Complete Alternative Models

1. SN74LS169AN: Similar 4-bit synchronous up/down counter with TTL logic family.
2. CD40193BE: 4-bit binary up/down counter with asynchronous clear and preset inputs.
3. MC14516BCL: 4-bit synchronous up/down counter with parallel load capability.

These alternative models offer similar functionality and can be considered as substitutes for the SN74AS169ADR in different applications.

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