Encyclopedia Entry: 74HCT4020D-Q100J

Product Overview

• Category: Integrated Circuit (IC)
• Use: Binary Counter
• Characteristics: High-Speed, CMOS Logic, Synchronous Reset
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The 74HCT4020D-Q100J is a high-speed binary counter IC that can be used in various digital applications. It offers synchronous reset functionality and operates on CMOS logic.
• Packaging/Quantity: The 74HCT4020D-Q100J is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HCT
• Number of Stages: 14
• Maximum Clock Frequency: 25 MHz
• Operating Temperature Range: -40°C to +125°C
• Input/Output Compatibility: TTL, CMOS

Pin Configuration

The 74HCT4020D-Q100J has a total of 16 pins arranged as follows:

__ __ Q1 |1 \__/ 16| VCC Q2 |2 15| Q0 Q3 |3 14| MR (Master Reset) Q4 |4 13| CP (Clock Pulse) Q5 |5 12| GND Q6 |6 11| Q7 Q7 |7 10| Q8 Q9 |8 9| Q10 ----------

Functional Features

• Binary Counter: The 74HCT4020D-Q100J functions as a 14-stage binary counter, capable of counting up to 16383.
• Synchronous Reset: The IC includes a Master Reset (MR) pin, which allows for synchronous reset of the counter to its initial state.
• High-Speed Operation: With a maximum clock frequency of 25 MHz, the IC enables rapid counting and processing of digital signals.
• CMOS Logic: The use of CMOS logic ensures low power consumption and compatibility with both TTL and CMOS input/output levels.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient processing of digital signals. - Synchronous reset functionality provides control over the counter's initial state. - CMOS logic ensures compatibility with various input/output levels. - Low power consumption compared to other logic families.

Disadvantages: - Limited number of stages (14), which may not be sufficient for certain applications requiring larger counters. - Requires careful handling due to its small package size.

Working Principles

The 74HCT4020D-Q100J operates as a binary counter by sequentially incrementing its internal stages in response to clock pulses. Each stage represents a binary digit, and the counter can count up to 16383 before rolling over to zero. The synchronous reset feature allows the counter to be reset to its initial state by applying a high-level signal to the Master Reset (MR) pin.

Detailed Application Field Plans

The 74HCT4020D-Q100J finds application in various digital systems that require counting or timing functions. Some potential application fields include: - Frequency dividers - Digital clocks and timers - Event counters - Data communication systems - Industrial automation

Alternative Models

• CD4020BE: Similar 14-stage binary counter IC from Texas Instruments.
• MC14020B: 14-stage ripple carry binary counter IC from ON Semiconductor.
• SN74HC4020: High-speed CMOS 14-stage binary counter IC from Texas Instruments.

These alternative models offer similar functionality and can be used as substitutes for the 74HCT4020D-Q100J in different applications.

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