74HC646DB,118

Introduction

The 74HC646DB,118 is a logic device belonging to the family of logic - buffers, drivers, receivers and transceivers, which is used to enable bidirectional data transmission between two input signals. This type of device is designed for use in a wide range of applications, such as telecommunications, automotive, industrial and consumer electronics.

Application Field and Working Principle

The 74HC646DB,118 can be used in a variety of applications requiring a digital level interface between two input signals. In order to accomplish this, the device provides an integrated bidirectional voltage-level translator with a fixed 3.3V level. It is designed to be used for both hot-swapping and in-circuit programming of micro‐controllers. The input and output pins are TTL compatible, so no external level shifting is required. The device also has two internal hysteresis thresholds and an adjustable output current limit. This allows the device to operate in either a voltage translation mode or a current drive mode.

The 74HC646DB,118 is designed to accept two different logic levels (which can be either 3.3V or 5V) at its inputs. The input and output pins are connected internally in a differential amplifier configuration. The inputs are then compared to the two internal hysteresis thresholds, and the output will be driven by the voltage difference between the two thresholds. This differential signal is used to generate the output, which can be either 3.3V or 5V. The device is also capable of driving up to 150mA of current, allowing it to be used for both signal transmission and signal amplification.

Conclusion

The 74HC646DB,118 is a logic device belonging to the family of logic - buffers, drivers, receivers and transceivers, which is used to enable bidirectional data transmission between two input signals. This type of device is designed for use in a wide range of applications, such as telecommunications, automotive, industrial and consumer electronics. The device provides an integrated bidirectional voltage-level translator with a fixed 3.3V level, and it is capable of driving up to 150mA of current. This makes the 74HC646DB,118 an ideal device for a variety of applications.