CD74HCT299E

Product Overview

• Category: Integrated Circuit (IC)
• Use: Shift Register
• Characteristics: High-Speed, CMOS Logic, 8-Bit Parallel-In/Serial-Out
• Package: DIP (Dual In-line Package)
• Essence: The CD74HCT299E is a high-speed CMOS logic IC that functions as an 8-bit parallel-in/serial-out shift register.
• Packaging/Quantity: The CD74HCT299E is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Input Compatibility: TTL and CMOS
• Number of Inputs: 8
• Number of Outputs: 1
• Data Rate: Up to 25 MHz
• Latch-Up Performance: Exceeds 250 mA per JESD 17

Detailed Pin Configuration

The CD74HCT299E has a total of 20 pins. Here is the detailed pin configuration:

1. Q0 (Output)
2. Q1 (Output)
3. Q2 (Output)
4. Q3 (Output)
5. Q4 (Output)
6. Q5 (Output)
7. Q6 (Output)
8. Q7 (Output)
9. GND (Ground)
10. SER (Serial Data Input)
11. RCLK (Register Clock Input)
12. SRCLK (Shift Register Clock Input)
13. OE (Output Enable Input)
14. MR (Master Reset Input)
15. QA (Parallel Data Input A)
16. QB (Parallel Data Input B)
17. QC (Parallel Data Input C)
18. QD (Parallel Data Input D)
19. VCC (Supply Voltage)
20. QH (Serial Data Output)

Functional Features

• 8-bit parallel-in/serial-out shift register
• High-speed operation with data rates up to 25 MHz
• Compatible with both TTL and CMOS logic levels
• Output enable control for easy interfacing with other devices
• Master reset input for clearing the register
• Wide operating voltage range of 2V to 6V

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Compatibility with both TTL and CMOS logic levels provides versatility in system design - Output enable control simplifies interfacing with other devices - Wide operating voltage range allows for flexibility in power supply options

Disadvantages: - Limited number of outputs may restrict certain applications requiring more output channels - Lack of built-in protection features against electrical faults or ESD events

Working Principles

The CD74HCT299E operates as an 8-bit parallel-in/serial-out shift register. It receives data in parallel through its eight input pins (QA-QD) and stores it internally. The data can then be shifted out serially through the QH pin using the shift register clock (SRCLK) input. The register clock (RCLK) input latches the parallel data into the internal storage upon a rising edge. The output enable (OE) input controls the activation of the output stage.

Detailed Application Field Plans

The CD74HCT299E is commonly used in various applications, including:

1. Serial data transmission systems
2. Data storage and retrieval systems
3. Digital communication systems
4. Microcontroller interfacing
5. Industrial automation
6. Robotics
7. Automotive electronics
8. Consumer electronics

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the CD74HCT299E:

1. SN74HC595 - 8-Bit Shift Register with Output Latches
2. CD4015 - Dual 4-Stage Static Shift Register
3. 74HC164 - 8-Bit Serial-In/Parallel-Out Shift Register
4. CD4021 - 8-Stage Static Shift Register
5. SN74LS164 - 8-Bit Serial-In/Parallel-Out Shift Register

These alternative models can be considered based on specific application requirements and availability.

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