SN74HC393D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Counter
• Characteristics: High-speed, Dual 4-bit Binary Ripple Counter
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Flip-flop based counter circuit
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 50 MHz
• Number of Counting Stages: 2
• Output Type: Standard
• Logic Family: HC (High-Speed CMOS)

Detailed Pin Configuration

The SN74HC393D has a total of 14 pins. The pin configuration is as follows:

1. CP1: Clock input for the first counting stage
2. MR1: Master Reset input for the first counting stage
3. QA1-QD1: Outputs of the first counting stage
4. VCC: Positive power supply (+2V to +6V)
5. GND: Ground (0V reference)
6. QA2-QD2: Outputs of the second counting stage
7. MR2: Master Reset input for the second counting stage
8. CP2: Clock input for the second counting stage

Functional Features

• Dual 4-bit binary ripple counter with separate clock inputs for each counting stage
• Asynchronous master reset for both counting stages
• Outputs can be used as individual bits or combined to form a 4-bit binary number
• High-speed operation with a maximum clock frequency of 50 MHz
• Wide supply voltage range allows for flexibility in different applications

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient counting in time-critical applications - Separate clock inputs for each counting stage provide flexibility in controlling the counting process - Asynchronous master reset allows for easy initialization of the counter - Wide supply voltage range accommodates various power supply configurations

Disadvantages: - Limited number of counting stages (2) may not be sufficient for complex counting applications - Output type is standard, which may require additional circuitry for specific interface requirements

Working Principles

The SN74HC393D is based on flip-flop circuits that can store and propagate binary information. The counter consists of two 4-bit ripple counters, each with its own clock input and asynchronous master reset. When a clock pulse is applied to the respective clock input, the counter increments by one. The outputs of each counting stage represent the binary value of the count. The master reset input allows the counter to be asynchronously reset to a known state.

Detailed Application Field Plans

The SN74HC393D is commonly used in various digital counting applications, including but not limited to:

1. Frequency Dividers: The counter can be used to divide an input frequency by a factor of 16 (2^4) or other powers of 2.
2. Event Counters: It can be employed to count events or pulses in systems such as industrial automation, electronic instrumentation, or digital communication.
3. Time Delay Generators: By utilizing the counter's clock input and outputs, precise time delays can be generated for controlling sequential operations in circuits or systems.

Detailed and Complete Alternative Models

1. CD40193: Similar dual 4-bit binary ripple counter with separate clock inputs and asynchronous master reset. Operates at a wider supply voltage range of 3V to 18V.
2. MC14093B: Quad 2-input NAND Schmitt trigger, which can be used to build custom counters with different functionalities.
3. 74LS393: Dual 4-bit binary ripple counter with similar characteristics but operates at a lower clock frequency.

(Note: The above alternative models are provided for reference and may have different specifications and pin configurations. It is recommended to refer to their respective datasheets for detailed information.)

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