SN65HVD379DR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Transceiver
Protocol:	RS422, RS485
Number of Drivers/Receivers:	1/1
Duplex:	Full
Receiver Hysteresis:	50mV
Data Rate:	25Mbps
Voltage - Supply:	3 V ~ 3.6 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	SN65HVD379

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Introduction

The SN65HVD379DR is an open-drain type low-power differential transceiver that combines the functions of both a driver and a receiver in a single device. It is designed to work with both 3.3 V and 5 V systems and is used in RS-485 standard compliant communication systems. It is a highly integrated device for data transmission and reception, and is specifically designed for long–distance data transmission applications, such as those required in the industrial automation, building automation and energy management fields.

Features

The SN65HVD379DR has a slew rate of 44 Volt/μs, a data rate of 35 Mbps, and an operating voltage range of 3.0–5.5 V. It has four pins, two of which are used for the differential signals (A, B), while the other two pins are used to control the data flow. The enable pin (EN) is used to enable or disable the transceiver, while the enable/disable pin (DE\EN) enables or disables the transceiver depending on the logic level at the enable pin. It also features a disable logic that reduces current consumption to less than 2.5 μA. It also has an internal 7 k Ω pull-up resistor and has a supply current of less than 7 mA when operating.

Applications

The SN65HVD379DR is used in industrial automation, building automation, and energy management systems for long-distance data transmission. It can be used for RS-485 data transmission between multiple controllers, such as those used in motor control and process control applications.

Working Principle

The SN65HVD379DR receives a differential input signal (A, B) and amplifies the signal with a differential amplifier. The amplified signal is then converted to a single-ended signal (SP, SN) and is driven to the output. The differential input signal is also used to control the direction of data flow, and the ENABLE /DISABLE pin is used to enable or disable the transceiver. The internal 7k Ω pull-up resistor ensures that the transceiver is not affected by interference from the external environment. The output signal is amplified by the differential amplifier and is then converted to a single ended signal which is driven to the output.

Conclusion

The SN65HVD379DR is a low-power differential transceiver that combines the functions of both a driver and a receiver in a single device. It is specifically designed for long–distance data transmission applications, and has a slew rate of 44 Volt/μs, and a data rate of 35 Mbps. It can be used for RS-485 data transmission between multiple controllers and has an internal 7 k Ω pull-up resistor and supply current of less than 7 mA when operating.

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