Series:	4000B
Packaging:	Tube
Part Status:	Obsolete
Logic Type:	Shift Register
Output Type:	Tri-State
Number of Elements:	2
Number of Bits per Element:	64
Function:	Serial to Parallel
Voltage - Supply:	4.5 V ~ 15.5 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	16-DIP (0.300", 7.62mm)
Supplier Device Package:	16-DIP
Base Part Number:	4517

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HEF4517BP,652 Application Field and Working Principle

Introduction

The HEF4517BP,652 is a logic shift register that is made up of two 8-bit shift registers and two 4-bit shift registers. It is typically used in applications such as encoding and decoding of FM radio signals, or the generation of binary-coded-decimal (BCD) data. The HEF4517BP,652 is easy to configure and offers a range of features to make it ideal for a wide range of applications.

Features

The HEF4517BP,652 is an 8-bit shift register that has two 4-bit shift registers integrated into it. It has four different modes of operation – Mode 0, Mode 1, Mode 2, and Mode 3. Each mode offers a specific range of features, allowing the user to tailor the functions of the HEF4517BP,652 to the specific application. The HEF4517BP,652 offers a range of features, such as parallel-to-serial shift register operation, serial-to-parallel shift register operation, clock synchronization, and four modes of operation. The parallel-to-serial shift register operation allows data to be shifted in and out of the two 8-bit registers in one 8-bit parallel operation. This is ideal for applications where data needs to be handled in bulk. The serial-to-parallel shift register operation allows the user to shift data byte-by-byte in and out of the two 8-bit registers. This mode enables the user to control the speed at which data is shifted. The clock synchronization feature allows the HEF4517BP,652 to lock its clock input to an external clock source, which is ideal for applications where timing is of the essence.

Applications

The HEF4517BP,652 is commonly used in applications such as encoding and decoding of FM radio signals, generation of binary-coded-decimal (BCD) data, and in modems. The ability to clock synchronize the HEF4517BP,652 makes it ideal for use in modems, as it allows for data to be shifted in and out of the registers in a steady, predictable stream. It is also well-suited for other applications that need to process large amounts of data, such as in digital radios, digital watches, and bar-code scanners.

Working Principle

The working principle of the HEF4517BP,652 is simple and straightforward. The two 8-bit and two 4-bit shift registers operate in tandem to shift data in one direction – either in or out. In Mode 0, the data is shifted to the left and in Mode 1, the data is shifted to the right. In Modes 2 and 3, the data is both shifted to the left and to the right, allowing for faster and more efficient data processing. When the clock is asserted, each of the 8-bit and 4-bit shift registers are shifted one bit. For example, in Mode 0, if the data is shifted by one bit, the left-most bit of the first 8-bit shift register is shifted to the right-most bit of the second 8-bit shift register and the left-most bit of the first 4-bit shift register is shifted to the right-most bit of the second 4-bit shift register.

Conclusion

The HEF4517BP,652 is a versatile and highly functional logic shift register that can be used in a variety of applications. Its four modes of operation allow it to be tailored to suit a wide range of applications, such as encoding and decoding of FM radio signals, generating binary-coded-decimal (BCD) data, and in modems. The HEF4517BP,652 is easy to configure and its clock synchronization feature allows it to lock its shift register operation to an external clock source.

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