CD74HC273E

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-Speed, Octal D-Type, Positive-Edge Triggered, 3-State Output
• Package: 20-Pin Plastic Dual In-Line Package (PDIP)
• Essence: The CD74HC273E is a versatile flip-flop IC that can store and transfer data in digital systems.
• Packaging/Quantity: Available in tubes of 25 units or reels of 2,000 units.

Specifications

The CD74HC273E has the following specifications:

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V
• Low-Level Input Voltage: 0.8V
• Output Current: ±6mA
• Propagation Delay: 15ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HC273E has a total of 20 pins, which are assigned specific functions as follows:

1. CLR (Clear) - Active LOW clear input
2. D0 (Data Input 0) - Data input for flip-flop 0
3. D1 (Data Input 1) - Data input for flip-flop 1
4. D2 (Data Input 2) - Data input for flip-flop 2
5. D3 (Data Input 3) - Data input for flip-flop 3
6. D4 (Data Input 4) - Data input for flip-flop 4
7. D5 (Data Input 5) - Data input for flip-flop 5
8. D6 (Data Input 6) - Data input for flip-flop 6
9. D7 (Data Input 7) - Data input for flip-flop 7
10. GND (Ground) - Ground reference
11. Q0 (Output 0) - Output of flip-flop 0
12. Q1 (Output 1) - Output of flip-flop 1
13. Q2 (Output 2) - Output of flip-flop 2
14. Q3 (Output 3) - Output of flip-flop 3
15. Q4 (Output 4) - Output of flip-flop 4
16. Q5 (Output 5) - Output of flip-flop 5
17. Q6 (Output 6) - Output of flip-flop 6
18. Q7 (Output 7) - Output of flip-flop 7
19. CP (Clock Pulse) - Positive-edge clock pulse input
20. VCC (Supply Voltage) - Positive supply voltage

Functional Features

The CD74HC273E offers the following functional features:

• Octal Flip-Flop: The IC consists of eight individual D-type flip-flops, allowing it to store and transfer data in parallel.
• Positive-Edge Triggered: The flip-flops are triggered by a positive-edge clock pulse, ensuring accurate data capture.
• 3-State Output: The outputs can be put into a high-impedance state, enabling multiple devices to share a common bus.

Advantages and Disadvantages

Advantages of the CD74HC273E include:

• High-speed operation
• Versatile octal flip-flop functionality
• Wide operating voltage range
• 3-state output capability

Disadvantages of the CD74HC273E include:

• Limited temperature range (-40°C to +85°C)
• Requires external clock signal for proper operation

Working Principles

The CD74HC273E operates based on the principles of digital logic. When a positive-edge clock pulse is received at the CP pin, the data present at the D0-D7 inputs is transferred to the corresponding Q0-Q7 outputs. The CLR input can be used to clear all flip-flops simultaneously.

Detailed Application Field Plans

The CD74HC273E finds applications in various digital systems where data storage and transfer are required. Some potential application fields include:

1. Microcontrollers: Used for storing and transferring data between microcontroller units.
2. Digital Communication Systems: Employed in data buffering and synchronization circuits.
3. Memory Addressing: Utilized for address decoding and multiplexing in memory systems.
4. Data Processing Units: Integrated into arithmetic logic units (ALUs) for temporary data storage.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the CD74HC273E are:

1. SN74HC273N: Similar octal flip-flop IC from Texas Instruments.
2. MC74HC273AN: Octal D-type flip-flop IC