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ST490ABN bảng dữ liệu(PDF) 1 Page - STMicroelectronics |
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ST490ABN bảng dữ liệu(HTML) 1 Page - STMicroelectronics |
1 / 17 page February 2008 Rev 5 1/17 17 ST490AB Low power high speed RS-485/RS-422 transceiver Features ■ Low supply current: 5 mA max ■ -7 V to 12 V common mode input voltage range ■ 70 mV typical input hysteresis ■ Designed for 25 Mbps operation ■ Operate from a single 5 V supply ■ ±4 kV ESD protection ■ Current limiting and thermal shutdown for driver overload protection Description The ST490A is a low power transceiver for RS- 485 and RS-422 communications. The device contains one driver and one receiver in full duplex configuration. The ST490A draws 5 mA (typ.) of supply current when unloaded or fully loaded with disabled drivers. It operates from a single 5 V supply. Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that place the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic high output if both inputs are open circuit. DIP-8 SO-8 Table 1. Device summary Order code Temperature range Package Packaging ST490ABN -40 to 85 °C DIP-8 50 parts per tube / 40 tube per box ST490ABDR -40 to 85 °C SO-8 (tape and reel) 2500 parts per reel www.st.com |
Số phần tương tự - ST490ABN |
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Mô tả tương tự - ST490ABN |
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