SN74LS293N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter
• Characteristics: 4-bit binary ripple counter with asynchronous clear
• Package: DIP (Dual In-line Package)
• Essence: Sequential logic device used for counting and frequency division
• Packaging/Quantity: Available in tubes of 25 pieces or reels of 2,000 pieces

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• High-Level Input Voltage: 2V to 5.25V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: 2.7V (min)
• Low-Level Output Voltage: 0.5V (max)
• Maximum Clock Frequency: 30MHz
• Operating Temperature Range: 0°C to 70°C

Detailed Pin Configuration

The SN74LS293N has a total of 16 pins, which are assigned as follows:

1. CP (Clock Pulse) - Input
2. MR (Master Reset) - Input
3. QA (Output A) - Output
4. QB (Output B) - Output
5. QC (Output C) - Output
6. QD (Output D) - Output
7. GND (Ground) - Ground
8. VCC (Supply Voltage) - Power Supply
9. QA' (Complement of Output A) - Output
10. QB' (Complement of Output B) - Output
11. QC' (Complement of Output C) - Output
12. QD' (Complement of Output D) - Output
13. RC (Ripple Carry) - Output
14. RB (Ripple Borrow) - Output
15. RA (Ripple A) - Output
16. RB' (Complement of Ripple Borrow) - Output

Functional Features

• Asynchronous clear input for resetting the counter
• Outputs can be used as clock inputs for cascading multiple counters
• High-speed operation with minimal power consumption
• Can count up to 15 (binary 1111) before rolling over to 0 (binary 0000)
• Outputs provide both normal and complemented signals

Advantages and Disadvantages

Advantages: - Versatile counter suitable for various applications - Low power consumption - Easy to use and integrate into existing circuits - Wide operating temperature range

Disadvantages: - Limited maximum clock frequency compared to some other counters - Only counts in binary, not suitable for decimal counting

Working Principles

The SN74LS293N is a synchronous counter that operates based on clock pulses. When a clock pulse is received at the CP pin, the counter increments its value by one. The outputs represent the binary value of the count. The counter can be reset to zero using the master reset (MR) input.

Detailed Application Field Plans

The SN74LS293N is commonly used in various applications, including:

1. Frequency Division: The counter can be used to divide an input frequency by a factor of 2^n, where n is the number of bits in the counter.
2. Digital Clocks: The counter can be utilized to generate clock signals for digital systems, such as microprocessors and microcontrollers.
3. Event Counting: It can be employed to count events or pulses in electronic systems, such as in industrial automation or scientific instruments.
4. Traffic Light Control: The counter can be used to sequence the timing of traffic lights in a traffic control system.

Detailed and Complete Alternative Models

Some alternative models to the SN74LS293N include:

1. CD4029BE: CMOS presettable up/down counter
2. 74HC393: High-speed CMOS dual 4-bit binary ripple counter
3. CD4518BE: CMOS dual BCD up-counter

These alternative models offer similar functionality and can be used as replacements for the SN74LS293N in various applications.

In conclusion, the SN74LS293N is a 4-bit binary ripple counter with asynchronous clear. It is widely used in applications requiring counting and frequency division. With its versatile features and ease of integration, it serves as a reliable component in digital systems.