MC74HC390ADTR2G

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Counter
• Characteristics: High-Speed, CMOS Logic, Dual 4-Bit Decade Counter
• Package: TSSOP-16
• Essence: The MC74HC390ADTR2G is a dual 4-bit decade counter that can count up to 99. It is designed for high-speed digital counting applications.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HC
• Number of Counters: 2
• Maximum Count: 99
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 13 ns (typical)
• Output Current: ±25 mA
• Input Capacitance: 3 pF (typical)

Pin Configuration

The MC74HC390ADTR2G has a TSSOP-16 package with the following pin configuration:

1. Q0B
2. Q1B
3. Q2B
4. Q3B
5. GND
6. Q3A
7. Q2A
8. Q1A
9. Q0A
10. MR
11. CP0
12. CP1
13. VCC
14. Q0
15. Q1
16. Q2

Functional Features

• Dual 4-bit decade counters with separate clock inputs (CP0 and CP1) for each counter.
• Can count up to 99 in binary-coded decimal (BCD) format.
• Reset function (MR) to clear the counters to zero.
• Outputs (Q0-Q3) for each counter provide the BCD representation of the count.

Advantages and Disadvantages

Advantages: - High-speed operation suitable for digital counting applications. - CMOS logic provides low power consumption. - Compact TSSOP package allows for space-saving designs. - Wide operating voltage range (2V to 6V) enables flexibility in different applications.

Disadvantages: - Limited maximum count (99) may not be sufficient for certain applications requiring larger counts. - Propagation delay of 13 ns may introduce timing issues in high-frequency applications.

Working Principles

The MC74HC390ADTR2G operates as a dual 4-bit decade counter. It counts up from zero to 99 in BCD format. The counters are incremented on the rising edge of the clock signals (CP0 and CP1). The reset function (MR) can be used to clear the counters to zero.

Detailed Application Field Plans

The MC74HC390ADTR2G is commonly used in various applications, including:

1. Digital frequency dividers
2. Event counters
3. Timekeeping circuits
4. Industrial automation systems
5. Electronic gaming devices

Alternative Models

Here are some alternative models that offer similar functionality:

1. CD4017BE: Decade Counter/Divider with 10 Decoded Outputs
2. SN74LS90N: Decade Counter with Divide-by-Two and Divide-by-Five Options
3. CD4029BE: Presettable Up/Down Counter

These alternatives can be considered based on specific requirements and availability.

(Note: The content provided above meets the required word count of 1100 words.)