74HCT640D,652

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Logic - Buffers, Drivers, Receivers, Transceivers

The 74HCT640D,652 is a high-speed level-shifting buffer. This chip is an output buffer designed to provide a logic transition between two logic levels without fail. The purpose of the chip is to provide a logic-level shifting with extended functionality, such as clock crossing and improved noise immunity.

Application Field

The 74HCT640D,652 can be used in various applications where the input and output are of different logic levels, such as Microprocessor, microcontroller, and embedded systems applications. It can also be used as a buffer for level-shifting from 3.3V to 1.8V or 2.5V to 5V or other desired voltages. It is also used in high-speed I/O bus designs for interfacing with various memory and peripherals.

The 74HCT640D,652 has many different applications, such as:

• High-speed data transfer between devices with different logic levels.
• Signal conditioning logic circuit.
• Eliminate noise interference.
• Reduce EMI between systems.
• Interfacing with microprocessor and memory.
• Provide level-shifting between 3.3V and 1.8V or 2.5V and 5V.
• Interfacing with various I/O bus designs for memory and peripherals.

Working Principle

The 74HCT640D,652 is a bidirectional buffer with tri-state outputs and is designed to interface two logic family systems. The output stage of the buffer contains two power transistors, which are provided with bias current to allow acceptable fanout when driving high-impedance inputs. The output has very low output resistance, which aids in reducing the device’s dynamic power dissipation.

The device is configured as a level-shifting buffer for up to 10-mV logic transition values between two logic families with thresholds of 0.8V and 2.0V. In addition, the device has a low on-resistance output stage, which ensures optimal switching performance. The device allows for the input and output to be separated in different logic families by up to 10 mV.

The 74HC640D,652 is a self-timed device providing both input and output data validations. The device contains a single-drive enable pin that controls the outputs and allows for fast data synchronization. The enable pin is also capable of implementing enable skew compensation when used with two synchronized enable buses.

The logic family of the device is TTL-compatible and provides low power dissipation over the operating temperature range. The device is rated for operation over a wide range of temperatures, from -40 to 85°C.

The device can also be used with other logic families, such as CMOS, allowing the device to be used in applications where logic level translation between logic families is required.

The 74HCT640D,652 is an ideal solution for logic-level shifting between logic families of different logic levels. The device can also be used for signal conditioning and noise immunity to ensure reliable signal integrity. The device is also very suitable for applications such as Microprocessor, microcontroller and embedded systems, where multiple logic-level shifting is required.

The specific data is subject to PDF, and the above content is for reference