74ACT818SPC:Description,Features,Application and FAQ

74ACT818SPC is suitable for various applications in a wide range of electrical devices and circuits, especially where 8-bit diagnostics are required. Thus, how much do you know about 74ACT818SPC? If you don't know, the following article will help you learn more about 74ACT818SPC.

 

 

Product Introduction: 

 

Blikai Part Number: 712-74ACT818SPC

Manufacturer: Onsemi

Package Description: 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Logical Type: Register; Pipeline 

Voltage Supply: 4.5V-5.5V

Datasheet: Datasheet PDF

 

A Short Overview of the 74ACT818 8-Bit Diagnostic Register:

 

The ACT818 is a high-speed, general-purpose pipeline register with a Perform serial diagnostic or test mode on-board diagnostic register, which adopts a 24-pin plastic dual in-line package from the manufacturer of Onsemi. The diagnostic register can load parallel data to or from the pipeline register, which can output the data through the D input port (such as a WCS loading). Thus, understanding the characteristics, features, and applications of the 74ACT818 8-bit diagnostic register is fundamental to designing, installing, and maintaining any electrical system. 

 

Some Key Features of the 74ACT818SPC:

■ 8-bit diagnostic register                                                 

■ Serial diagnostic and  test  modes                                  

■ High-speed  operation                                                      

■ Low power consumption                                                

■ 24-pin plastic dual-in-line package (PDIP)                      

■ On-line and off-line diagnostic systems 

■ Exchange the contents of the diagnostic and output register 

■ Diagnostic register and testing                      

■ Cascadable for wide control words as used in microprogramming

■ Edge-triggered D registers                                                     

■ Output/Sink: 24 mA                                                                   

■ ACT818 has TTL-compatible inputs                                          

■ ACT818 has AMD compatibility on function and pin                   

Am29818 and MMI 74S818                  

 

 

 

The Application of 74ACT818SPC

• Register for the microprogramming control store: The 74ACT818SPC can serve as an address register for the microprogramming control store. It can hold the address of the microinstruction currently being executed or fetched from the control store.

 

• Status register: It can be employed to store the status of various events or conditions in a system. For example, in communication systems, it can indicate the status of transmitted or received data packets, error conditions, or communication channel availability.

 

• Data register: Data acquisition systems often involve transferring data between different components or stages. The flip-flops in the 74ACT818SPC can act as data buffers, temporarily storing data as it moves through the system.   

 

• Instruction register: The 74ACT818SPC can be employed to convert the parallel data stored in the instruction register into serial format.  

 

• Interrupt mask register: Interrupts are essential in microcontroller systems to handle external events or time-sensitive activities without interfering with the main program flow. Depending on their importance or priority, interruptions can be selectively enabled or disabled using an Interrupt Mask Register (IMR).

 

• Pipeline register: Pipeline registers are frequently utilized in systems that need to process data simultaneously. The 74ACT818SPC's dual 64-bit design allows for the simultaneous processing of parallel data streams, improving system speed and throughput.

 

• General-purpose register: The 74ACT818SPC can play a crucial role in implementing general-purpose registers, providing efficient data storage, transfer, and control capabilities essential for a wide range of digital applications.

 

• Parallel-serial converter: The 74ACT818SPC can be used to monitor data transmission between devices in a serial communication network and perform real-time analysis and troubleshooting of communication issues.

       

 

The Function Description of 74ACT818SPC 

 

Data transfers into the diagnostic register occur during the Low-to-High transition of DCLK. The mode and SDI determine what data source will be loaded. The pipeline register is loaded on the Low-to-High transition of PCLK. Mode selects whether the data source is the data input or the diagnostic register output. Because of the independence of the clock inputs, data can be shifted in the diagnostic register DCLK and loaded into the pipeline register from the data input PCLK, as long as no setup or hold time is violated. This simultaneous operation is legal.

                 

 

Comparison of Part No.-74ACT818SPC

 

Manufacturer	Part #	File Size	Datasheet	Description
AMI Semiconductor/onsemi	74ACT818	55.82 Kbytes	74ACT818.PDF	8-Bit Diagnostic Register
AMI Semiconductor/onsemi	74ACT821	79.96 Kbytes	74ACT821.PDF	10-Bit D-Type Flip-Flop with 3-STATE Outputs
AMI Semiconductor/onsemi	74ACT823	153.63 Kbytes	74ACT823.PDF	9-Bit D-Type Flip-Flop
Fairchild Semiconductor	74ACT825	74.94 Kbytes	74ACT825.PDF	8-Bit D-Type Flip-Flop

 

Faqs

Question 1: What is the 74ACT818SPC?

Answer: The 74ACT818SPC is a specific integrated circuit (IC) belonging to the 74 series of digital logic chips. 

 

Question 2: What is the operating temperature range of the 74ACT818SPC 8-Bit Diagnostic Register?

Answer: In the application of industry, the minimum operating temperature of 74ACT818SPC 8-Bit Diagnostic Register is - 40 C°and the maximum operating temperature is + 85 C°.

 

Question 3: What is the voltage that the 74ACT818SPC 8-bit diagnostic register can tolerate?

Answer: The normal operating voltage range for the majority of 74 Series ICs, including the ACT series, is between 4.5 and 5.5 V. This voltage level is compatible with the TTL (Transistor-Transistor Logic) standard.Dependable performance and interoperability with other TTL compatible devices are guaranteed within this voltage range.

 

Question 4: Does the 74ACT818SPC-8 bit diagnostic registry meet RoHS compliance standards?   

Answer: Yes, the 74ACT818SPC-8 bit diagnostic registry meet RoHS compliance standards. Because RoHS compliance limits the use of specific hazardous compounds in electrical and electronic equipment, it is a crucial factor to take into account when purchasing electronic components. It guarantees that electrical devices are made using environmentally friendly materials that are safe for both consumers and the environment and is required by law in many parts of the globe, including the European Union.  Therefore, customers who need it can buy with assurance.        

 

Summary  

 

In conclusion, in many different electrical devices and circuits, 74ACT818SPC is appropriate for repository applications, particularly where 8-bit diagnostics are needed. It has applications in signal processing, control logic, data storage, and more. Please be aware that because the model is old, it might not be utilized very often. It is recommended to consult the manufacturer's datasheet or technical documentation for precise and detailed information on the voltage tolerances and working conditions of the 74ACT818SPC. The maximum and minimum input voltage levels, suggested operating voltage ranges, and other crucial information on voltage tolerance and compatibility are all covered in depth in this datasheet. If you have access to the 74ACT818SPC's datasheet from the manufacturer or sub-distributor, you may discover the necessary information by consulting the Electrical Characteristics section or the specifications pertaining to the voltage requirements. You might need to get in touch with the manufacturer directly, go via an approved dealer, or use an internet resource if you don't have an easily accessible datasheet.

 

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