SN74HC393N

Product Overview

• Category: Integrated Circuit
• Use: Binary Counter/Divider
• Characteristics:
  • High-speed operation
  • Wide operating voltage range
  • Low power consumption
• Package: DIP (Dual In-line Package)
• Essence: Dual 4-bit binary ripple counter
• Packaging/Quantity: Tube/25 pieces

Specifications

• Supply Voltage Range: 2V to 6V
• Maximum Clock Frequency: 50 MHz
• Number of Counting Stages: 2
• Output Current: ±6 mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74HC393N has a total of 14 pins, which are assigned as follows:

1. Clock Input A (CPA)
2. Clock Input B (CPB)
3. Reset Input (MR)
4. Data Input A (DA)
5. Data Input B (DB)
6. Carry Output A (COA)
7. Carry Output B (COB)
8. Q0 Output A (Q0A)
9. Q1 Output A (Q1A)
10. Q2 Output A (Q2A)
11. Q3 Output A (Q3A)
12. Q0 Output B (Q0B)
13. Q1 Output B (Q1B)
14. Q2 Output B (Q2B)

Functional Features

• Dual 4-bit binary ripple counter
• Asynchronous reset functionality
• Independent clock inputs for each counter
• Outputs can be used as clock inputs for cascading multiple counters
• Carry outputs for cascading counters

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient counting/dividing tasks
• Wide operating voltage range provides flexibility in various applications
• Low power consumption helps conserve energy
• Asynchronous reset feature allows for easy initialization

Disadvantages

• Limited number of counting stages (2 in this case)
• Output current is relatively low, limiting direct drive capabilities

Working Principles

The SN74HC393N is a dual 4-bit binary ripple counter that counts up or down depending on the clock inputs and data inputs. The counters operate asynchronously, meaning they can be reset independently of each other. The carry outputs enable cascading multiple counters to achieve higher bit counts.

Detailed Application Field Plans

The SN74HC393N is commonly used in various applications, including:

1. Frequency division: Dividing high-frequency signals into lower frequencies.
2. Event counting: Counting occurrences of specific events or pulses.
3. Timekeeping: Tracking time intervals or durations.
4. Digital displays: Driving LED or LCD displays for numeric output.
5. Sequential control: Generating sequential patterns for controlling devices.

Detailed and Complete Alternative Models

Some alternative models to the SN74HC393N include:

1. CD40193: Similar functionality with different package options.
2. MC14093B: Quad 2-input NAND Schmitt trigger, which can be used as a counter/divider.
3. 74LS393: Low-power Schottky version of the dual 4-bit binary counter.

These alternatives offer similar features and can be suitable replacements based on specific requirements.

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