SP3075EMN-L/TR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Transceiver
Protocol:	RS422, RS485
Number of Drivers/Receivers:	1/1
Duplex:	Half
Receiver Hysteresis:	100mV
Data Rate:	500kbps
Voltage - Supply:	3.3V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC

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SP3075EMN-L/TR Application Field and Working Principle

Interface - Drivers, Receivers, Transceivers

The SP3075EMN-L/TR is a family of high performance, low-voltage differential signaling transceivers that is used in a wide range of applications including communication, consumer, mobile, and automotive applications. The transceivers can operate at a low supply voltage, typically 1.5 V, and are designed to interface between 3.3 V and 5 V logic levels. The receivers have an adjustable input threshold voltage and a Schmitt Trigger input stage to reject slow input transitions and reduce the system’s clock jitter. The transmitters have a selectable slew rate to optimize the EMI performance.The SP3075EMN-L/TR is a highly integrated transceiver, which integrates two differential line drivers, two differential line receivers, two 5 Ω on-chip terminating resistors and one resistive feedback path (RFS). The transmitters feature a selectable slew rate and a typical output swing of 400 mV (1V peak-to-peak to 3V peak-to-peak). The receivers feature an adjustable input threshold voltage, which can be set to the desired logic level (1.5V, 2V, 2.5V, 3V).The transceivers have the following features: • Adjustable input threshold voltage (1.5V, 2V, 2.5V, 3V) • Selectable slew rate • High speed differential signaling • Low voltage (1.5 V) operation • High EMI performance • 5 Ω on-chip termination • Multiple receiver enablementThe device can be used in various applications such as Serial Peripheral Interface (SPI), Inter-Integrated Circuit (I2C), Universal Serial Bus (USB) and LVDS applications.

Working Principle

The SP3075EMN-L/TR operates at a low voltage, typically 1.5 V, with a logic level of 3.3V or 5V. The transceiver consists of two drivers, two receivers, two 5Ω on-chip terminating resistors, and one resistive feedback path (RFS). The transmitters feature a selectable slew rate and a typical output swing of 400 mV (1V peak-to-peak to 3V peak-to-peak).The function of the transmitters is to drive the differential pairs in the output. The transmitters contain two stages: a pre-driver, which conditions the input signals according to the selected slew rate, and a driver, which amplifies the conditioned signals and transmits them over the differential pair. The selectable slew rate allows for the pre-driver to control the transition speed of the signals, thereby reducing system EMI.The receivers contain two stages: a pre-amplifier, which amplifies the input signals and a comparator, which compares the amplified signals to the selected input threshold voltage, and outputs a logic one or a logic zero based on the result of this comparison. The adjustable input threshold voltage allows the comparator to be set to the desired logic level (1.5V, 2V, 2.5V, 3V). The receivers also have a Schmitt Trigger input stage, which rejects slow input transitions, reducing system clock jitter. The output of the receivers is three-state (high impedance) when the receiver is disabled.The SP3075EMN-L/TR can be used in various applications such as Serial Peripheral Interface (SPI), Inter-Integrated Circuit (I2C), Universal Serial Bus (USB) and LVDS applications. This device is a reliable and cost-effective solution for interfacing between 3.3V or 5V logic levels and low-voltage, high-speed differential signals.

Conclusion

The SP3075EMN-L/TR is a family of high performance, low-voltage differential signaling transceivers designed specifically to interface between 3.3 V and 5 V logic levels. It features adjustable input threshold voltage and selectable slew rate, allowing for high level of customization. It also features on-chip termination and multiple receiver enablement which makes it an ideal option for a variety of applications. The device is an efficient way to send, receive and analyze high-speed differential signals at low voltages, and is ideal for applications such as SPI, I2C, USB and LVDS.

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