CD74HC393M

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital counter
• Characteristics: High-speed operation, low power consumption
• Package: 16-pin SOIC (Small Outline Integrated Circuit)
• Essence: Dual 4-bit binary ripple counter
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Clock Frequency: 25MHz

Pin Configuration

The CD74HC393M has a total of 16 pins, which are assigned as follows:

1. Clock Input A (CLKA)
2. Clock Input B (CLKB)
3. Reset Input (RST)
4. Data Input A (D0A)
5. Data Input B (D0B)
6. Data Input C (D1A)
7. Data Input D (D1B)
8. Carry Output A (COA)
9. Carry Output B (COB)
10. Q0 Output A (Q0A)
11. Q0 Output B (Q0B)
12. Q1 Output A (Q1A)
13. Q1 Output B (Q1B)
14. Q2 Output A (Q2A)
15. Q2 Output B (Q2B)
16. Q3 Output A (Q3A)

Functional Features

• Dual 4-bit binary ripple counter with asynchronous reset
• Synchronous counting on both rising and falling edges of the clock inputs
• Carry outputs for cascading multiple counters
• Individual data inputs for each counter
• High-speed operation allows for efficient counting in various applications
• Low power consumption makes it suitable for battery-powered devices

Advantages and Disadvantages

Advantages: - High-speed operation enables quick counting - Low power consumption prolongs battery life - Dual counters provide flexibility in circuit design - Asynchronous reset allows for easy initialization

Disadvantages: - Limited maximum clock frequency of 25MHz - Only supports binary counting

Working Principles

The CD74HC393M is a dual 4-bit binary ripple counter that counts up or down based on the clock inputs (CLKA and CLKB). The counters operate synchronously on both rising and falling edges of the clock signals. The count can be reset to zero using the asynchronous reset input (RST).

Each counter has its own set of data inputs (D0A, D0B, D1A, D1B) which determine the initial count value. The carry outputs (COA and COB) allow for cascading multiple counters to create larger counting sequences.

Detailed Application Field Plans

The CD74HC393M is commonly used in various digital applications, including:

1. Frequency dividers
2. Event counters
3. Timekeeping circuits
4. Industrial automation systems
5. Digital communication equipment

Its high-speed operation and low power consumption make it suitable for applications where efficient counting and minimal energy usage are essential.

Detailed and Complete Alternative Models

1. SN74HC393: Similar functionality and specifications, but available in a different package (DIP-14).
2. CD40193: 4-bit synchronous up/down binary counter with similar characteristics.
3. CD4029: Presettable up/down counter with parallel load capability.

These alternative models offer similar functionalities and can be considered as replacements for the CD74HC393M depending on specific requirements and availability.

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