SN74ALS29821DWRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: High-speed, Low-power consumption
• Package: SOIC-20
• Essence: 8-Bit Universal Shift/Storage Register
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: ALS
• Number of Bits: 8
• Shift Direction: Bidirectional
• Operating Voltage: 2V to 6V
• Operating Temperature: -40°C to +85°C
• Propagation Delay: 10ns (typical)
• Output Drive Capability: ±24mA

Detailed Pin Configuration

1. SER (Serial Data Input)
2. SCLK (Serial Clock Input)
3. RCLK (Register Clock Input)
4. SRCLR (Shift Register Clear Input)
5. OE (Output Enable Input)
6. QA-QH (Parallel Outputs)
7. GND (Ground)
8. QH' (Serial Output)
9. VCC (Power Supply)
10. D (Serial Data Input)
11. CP (Clock Pulse Input)
12. MR (Master Reset Input)
13. QH (Serial Output)
14. QH' (Serial Output)
15. QH (Serial Output)
16. QH' (Serial Output)
17. QH (Serial Output)
18. QH' (Serial Output)
19. QH (Serial Output)
20. QH' (Serial Output)

Functional Features

• Bidirectional shift register with parallel storage capability
• Serial data input and output for cascading multiple devices
• Parallel outputs for easy interfacing with other logic circuits
• Shift register clear input for resetting the register
• Output enable input for controlling the output state
• High-speed operation with low power consumption

Advantages and Disadvantages

Advantages

• Versatile universal shift/storage register
• High-speed operation allows for efficient data processing
• Low-power consumption for energy-efficient applications
• Easy cascading of multiple devices for expanded functionality
• Wide operating voltage range for compatibility with various systems

Disadvantages

• Limited number of bits (8) may not be sufficient for certain applications requiring larger data storage
• Propagation delay of 10ns may introduce timing constraints in high-speed applications

Working Principles

The SN74ALS29821DWRG4 is an 8-bit universal shift/storage register that can perform bidirectional shifting and parallel storage operations. It utilizes a serial data input (SER) and clock inputs (SCLK, RCLK) to shift data through the register. The shift register clear input (SRCLR) allows for resetting the register to its initial state.

The device also features parallel outputs (QA-QH) that store the data present in the register. These parallel outputs can be easily interfaced with other logic circuits for further processing. The output enable input (OE) controls the output state, enabling or disabling the parallel outputs.

Detailed Application Field Plans

The SN74ALS29821DWRG4 can be used in various digital logic applications, including:

1. Data communication systems
2. Serial-to-parallel and parallel-to-serial converters
3. Shift register-based counters and timers
4. Data storage and retrieval systems
5. Arithmetic and logical operations
6. Control and interface circuits

Detailed and Complete Alternative Models

1. SN74ALS29821N - DIP-20 package, through-hole mounting
2. SN74ALS29821NSR - SOP-20 package, surface-mount technology
3. SN74ALS29821PW - TSSOP-20 package, smaller footprint
4. SN74ALS29821PWRG4 - TSSOP-20 package, tape and reel packaging

These alternative models provide different package options and mounting styles to suit various application requirements.

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