SN74ALS161BDRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The SN74ALS161BDRE4 is a versatile digital counter IC that can be used in various applications requiring counting functionality.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Logic Family: ALS
• Number of Bits: 4
• Clock Input: Synchronous
• Output Type: Standard
• Propagation Delay: 11 ns
• Maximum Clock Frequency: 125 MHz

Detailed Pin Configuration

The SN74ALS161BDRE4 has a total of 16 pins. Here is the detailed pin configuration:

1. CLR (Clear) - Active Low Clear Input
2. CLK (Clock) - Synchronous Clock Input
3. D0 (Data Input 0) - Least Significant Bit (LSB) Data Input
4. D1 (Data Input 1) - Data Input
5. D2 (Data Input 2) - Data Input
6. D3 (Data Input 3) - Most Significant Bit (MSB) Data Input
7. GND (Ground) - Ground Reference
8. Q0 (Output 0) - Least Significant Bit (LSB) Output
9. Q1 (Output 1) - Output
10. Q2 (Output 2) - Output
11. Q3 (Output 3) - Most Significant Bit (MSB) Output
12. CET (Count Enable) - Count Enable Input
13. ENT (Enable Parallel Load) - Enable Parallel Load Input
14. VCC (Supply Voltage) - Positive Supply Voltage
15. NC (No Connection) - No Connection
16. NC (No Connection) - No Connection

Functional Features

• High-speed synchronous counting operation
• Asynchronous clear input for resetting the counter
• Parallel load capability for presetting the counter value
• Outputs can be used as clock inputs for cascading multiple counters
• Low power consumption
• TTL-compatible inputs and outputs

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient counting in time-critical applications.
• Synchronous design ensures accurate and reliable counting.
• Clear and parallel load inputs provide flexibility in controlling the counter's behavior.
• Low power consumption makes it suitable for battery-powered devices.
• Compatibility with TTL logic levels simplifies integration with other digital circuits.

Disadvantages

• Limited to 4-bit counting, may not be suitable for applications requiring larger count ranges.
• Requires an external clock signal for proper operation.
• Not suitable for applications requiring asynchronous counting.

Working Principles

The SN74ALS161BDRE4 is a synchronous 4-bit binary counter. It counts up or down based on the clock input and control signals. The counter can be cleared asynchronously using the CLR input or loaded with a specific value using the ENT and parallel load inputs. The outputs represent the current count value and can be used as inputs for cascading multiple counters.

Detailed Application Field Plans

The SN74ALS161BDRE4 can be used in various applications that require counting functionality, such as:

1. Frequency dividers
2. Event counters
3. Digital clocks
4. Industrial automation systems
5. Communication equipment
6. Automotive electronics
7. Consumer electronics

Detailed and Complete Alternative Models

1. SN74ALS163BDRE4: 4-bit synchronous binary counter with parallel load capability.
2. SN74ALS162BDRE4: 4-bit synchronous binary counter with asynchronous clear input.
3. SN74ALS164BDRE4: 8-bit serial-in/parallel-out shift register with synchronous parallel load.

These alternative models offer similar functionality to the SN74ALS161BDRE4 but may have additional features or different pin configurations.

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