Interface IC SP490CN-L/TR Description SP490 and SP491 are full duplex differentials compliant with RS-485 and RS-422. The interface IC SP490CN-L/TR uses the MaxLinear patented BiCMOS manufacturing process, both products require a fraction of the power of the old biphasic design. RS-485 standard is ideal for multipoint application interface IC SP490CN-L/TR

Or for remote interface. RS-485 allows up to 32 drivers and 32 receivers to be connected to one data bus, making it ideal for multi-drop applications. Since cables can be up to 4000 feet long, RS-485

The transceiver is equipped with a wide (-7V to 12V) common mode range to accommodate ground potential differences. Interface IC SP490CN-L/TR

Because RS-485 is a differential interface, the data is virtual, immune to noise in the transmission line, and the drivers of the SP491 are different

output. A typical no-load voltage output will fluctuate from 0 volts to +5 volts. Bad case loaded 54?

Differential output, the driver can maintain voltage levels greater than 1.5V. The driver for the SP491 has a driver enable control line

High is active. A logic high on DE (pin 4) of the SP491 will

Enable differential driver output. Low level logic (pin)

4) Three-state drive output of SP491. The SP490 does not have drivers enabled.

The receivers SP490 and SP491 have differential inputs with input sensitivity as low as ±200mV.

The input impedance of the receiver is typically 15 kΩ (12 kΩ

lowest). A wide common-mode range of -7V to 12V allows for large ground potential differences between systems. of

The receivers for both SP490 and SP491 are fail-safe. Fail-safe guarantees that the receiver output will be in a high state when the input is not connected. The receiver of the SP491 has a receiver enable control line

Low activity. A logic low of REB (pin 3) of the SP491

The differential receiver will be enabled. This is Reb's logic

(Pin 3) of the SP491 will tri-state the receiver.

Shenzhen Tianzhuo Weiye Electronics Co., Ltd.

In the past 10 years, Shenzhen Tianzhuo Weiye Electronics Co., Ltd. has seized the historical opportunities brought by China's reform and opening up and the rapid development of the electronics industry, adhered to customer-centricity and high-quality products as the foundation, and provided customers with one-stop procurement services for components. Won the respect and trust of customers, from an entrepreneurial company based in Huaqiangbei, Shenzhen Special Economic Zone, China, it has grown steadily into an electronic component supplier with several well-known brand product lines and customers in many countries and regions around the world. The electronic IC and 3C distributed and wholesaled sell well in the consumer market and enjoy a high status among consumers. The company has established long-term and stable cooperative relations with many retailers and agents.