CD74HC534E

Product Overview

• Category: Integrated Circuit
• Use: Logic Level Shifter
• Characteristics: High-Speed, Octal D-Type Flip-Flop with 3-State Outputs
• Package: 20-pin PDIP (Plastic Dual In-Line Package)
• Essence: The CD74HC534E is a versatile logic level shifter that can be used to interface between different voltage domains in digital systems.
• Packaging/Quantity: Available in tubes of 25 units or reels of 2,000 units.

Specifications

• Supply Voltage Range: 2V to 6V
• Logic Family: HC (High-Speed CMOS)
• Number of Flip-Flops: 8
• Output Type: 3-State
• Propagation Delay: 15 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HC534E has a total of 20 pins. Here is the detailed pin configuration:

1. GND (Ground)
2. Q0 (Flip-Flop Output)
3. D0 (Flip-Flop Data Input)
4. D1 (Flip-Flop Data Input)
5. D2 (Flip-Flop Data Input)
6. D3 (Flip-Flop Data Input)
7. D4 (Flip-Flop Data Input)
8. D5 (Flip-Flop Data Input)
9. D6 (Flip-Flop Data Input)
10. D7 (Flip-Flop Data Input)
11. CP (Clock Pulse Input)
12. MR (Master Reset Input)
13. OE (Output Enable Input)
14. Q7 (Flip-Flop Output)
15. Q6 (Flip-Flop Output)
16. Q5 (Flip-Flop Output)
17. Q4 (Flip-Flop Output)
18. Q3 (Flip-Flop Output)
19. Q2 (Flip-Flop Output)
20. VCC (Supply Voltage)

Functional Features

• The CD74HC534E provides a simple and efficient way to shift logic levels between different voltage domains.
• It can be used to interface between 5V and 3.3V systems, or any other compatible voltage levels.
• The 3-state outputs allow for easy bus sharing and reduce the need for additional external components.
• The high-speed operation makes it suitable for applications requiring fast data transfer.

Advantages and Disadvantages

Advantages: - Versatile logic level shifting capability - Wide supply voltage range - High-speed operation - 3-state outputs for bus sharing

Disadvantages: - Limited number of flip-flops (8 in total) - Not suitable for applications requiring a large number of outputs

Working Principles

The CD74HC534E utilizes D-type flip-flops to store and transfer data. The clock pulse input (CP) controls the timing of data transfer, while the master reset input (MR) allows for resetting all flip-flops simultaneously. The output enable input (OE) enables or disables the 3-state outputs.

When the CP input receives a rising edge, the data present at the D0-D7 inputs is transferred to the corresponding Q0-Q7 outputs. The state of the outputs can be controlled by the OE input. When OE is low, the outputs are enabled and reflect the input data. When OE is high, the outputs are in a high-impedance state.

Detailed Application Field Plans

The CD74HC534E can be used in various digital systems where logic level shifting is required. Some potential application fields include:

1. Microcontroller interfacing with different voltage peripherals.
2. Communication interfaces between systems operating at different voltage levels.
3. Data acquisition systems where analog-to-digital converters (ADCs) output signals at different logic levels.
4. Industrial automation systems requiring reliable and efficient level shifting.

Detailed and Complete Alternative Models

• SN74HC534N: Similar octal D-type flip-flop with 3-state outputs, available in a 20-pin PDIP package.
• CD74HCT534E: Octal D-type flip-flop with 3-state outputs, compatible with TTL logic levels, available in a 20-pin PDIP package.
• MC74HC534AN: High-speed CMOS octal D-type flip-flop with 3-state outputs, available in a 20-pin PDIP package.

These alternative models offer similar functionality and can be used as replacements for the CD74HC534E depending on specific requirements and availability.

Word count: 554 words