SN75172DWRE4

The SN75172DWRE4 is a quad differential transmitter/receiver designed for operation on a single 5 V supply. It is a quad open-collector driver and a quad differential receiver. The intended application field for the SN75172DWRE4 is in applications that require driving or receiving differential data signals, including RS-485 and other balanced data transmission systems such as token ring local-area networks (LAN) and digital data highways. The SN75172DWRE4 also serves as an interface between balanced data buses and low-speed logic units.

The SN75172DWRE4 communicates data between two balanced buses, either in duplex or half-duplex mode, with linear transmission power requirements of 16 mA peak-to-peak, 1 MHz rise and fall times, and a minimum transfer rate of 800 kbps. The device comprises four open-collector drivers in one package and four differential receivers, each driver being paired with a receiver. The SN75172DWRE4 supports a maximum extension cable length of 1000 m.

The SN75172DWRE4 is designed for use in applications requiring the transmission of differential digital data signals, such as token ring networks. The differential data signals can be transmitted over significant distances due to their balanced nature and their limited power consumption. The SN75172DWRE4 also serves as an efficient transmission and reception interface for microprocessor controlled devices.

The Working Principles of the SN75172DWRE4 are as follows:

The SN75172DWRE4 is composed of four open-collector drivers and four receiver circuits. Each driver is coupled to a corresponding receiver and is capable of transmitting up to 16 mA of current. The differential receivers are active-low and are provided with hysteresis for improved waveform distortion rejection. The device has an operating voltage range of 4.5 V to 5.5 V and common-mode input voltage range of -4 V to +4 V, allowing for superior accuracy in the transmission and reception of the differential digital data signals.

The quiescent current of the SN75172DWRE4 is 0.5 mA. This current is consumed regardless of the driver output state. The device is protected against false triggering due to large input voltage transients. The SN75172DWRE4 has two enable inputs, EN1 and EN2, which are used to enable or disable all four drivers and receivers. The enable logic level is 1 for normal output operation. The device includes schmitt input hysteresis of 125 mV on each receiver input terminal, providing superior signal integrity.

The SN75172DWRE4 is ideal for use in RS-485 and other Balanced Long Run SerDes Applications. The device has high signal integrity and low power consumption, making it suitable for applications that require precise data transmission over long distances. It has an operating temperature range of -40°C to +85°C and is available in an 8-pin DIP and 8-pin SOIC package.

In conclusion, the SN75172DWRE4 is a quad open-collector driver and a quad differential receiver designed for use in applications requiring the transmission of differential digital data signals. It has a maximum operating voltage range of 4.5 V to 5.5 V and a common-mode input voltage range of -4 V to +4 V, allowing for superior accuracy in transmission and reception. The device has two enable inputs, EN1 and EN2, and is protected against false triggering due to large input transients. The SN75172DWRE4 is ideal for use in applications that require driving or receiving differential data signals, including RS-485 and other balanced data transmission systems.