SN74LS393D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: Dual 4-Bit Binary Counter
• Package: DIP (Dual In-line Package)
• Essence: High-speed, low-power Schottky TTL technology
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• Operating Temperature Range: 0°C to 70°C
• Logic Family: LS
• Number of Pins: 14
• Maximum Clock Frequency: 33 MHz
• Propagation Delay: 15 ns
• Output Current: ±8 mA

Detailed Pin Configuration

1. CLK A (Clock Input A)
2. RCO A (Ripple Carry Output A)
3. Q A (Output A)
4. Q A (Complement Output A)
5. GND (Ground)
6. Q B (Complement Output B)
7. Q B (Output B)
8. RCO B (Ripple Carry Output B)
9. CLK B (Clock Input B)
10. VCC (Supply Voltage)
11. Q C (Output C)
12. Q C (Complement Output C)
13. RCO C (Ripple Carry Output C)
14. CLK INH (Clock Inhibit)

Functional Features

• Dual 4-bit binary counter with individual clock inputs and ripple carry outputs
• Can be cascaded to create larger counters
• High-speed operation with low power consumption
• Schmitt-trigger inputs for noise immunity
• Wide supply voltage range for flexibility in various applications

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient counting - Low power consumption reduces energy usage - Schmitt-trigger inputs provide noise immunity, ensuring reliable operation - Wide supply voltage range allows for flexibility in different systems

Disadvantages: - Limited number of bits (4-bit) may not be suitable for applications requiring larger counters - Operating temperature range is limited to 0°C to 70°C, which may restrict usage in extreme environments

Working Principles

The SN74LS393D is a dual 4-bit binary counter that counts up from zero to fifteen (in binary) based on the clock inputs. Each counter has its own clock input and outputs the count value as well as a ripple carry output. The counters can be cascaded to create larger counters by connecting the ripple carry output of one counter to the clock input of the next.

When a clock pulse is applied to the CLK A or CLK B input, the corresponding counter increments its count value. The ripple carry output (RCO) becomes high when the counter reaches its maximum value and rolls over to zero. This ripple carry output can be used to cascade multiple counters.

Detailed Application Field Plans

The SN74LS393D is commonly used in various digital logic applications, including:

1. Counters and frequency dividers: The dual 4-bit binary counter functionality makes it suitable for counting events or dividing frequencies.
2. Timekeeping circuits: The counter can be used to keep track of time in clocks, timers, or other time-based systems.
3. Address decoding: The counter can be used to generate address sequences for memory or peripheral devices.
4. Control circuitry: The counter can be utilized in control systems to sequence operations or generate timing signals.

Detailed and Complete Alternative Models

1. CD4017: Decade counter with 10 decoded outputs, suitable for applications requiring larger counters.
2. 74HC393: Dual 4-bit binary counter with similar functionality but operates at higher voltages.
3. CD4020: 14-stage binary counter with a wider range of counting possibilities.

These alternative models provide similar functionality to the SN74LS393D but may have different specifications or package options.

In conclusion, the SN74LS393D is a dual 4-bit binary counter integrated circuit that offers high-speed operation, low power consumption, and noise immunity. It finds applications in counters, timekeeping circuits, address decoding, and control systems. Alternative models such as CD4017, 74HC393, and CD4020 can be considered based on specific requirements.