DRS4485

Standard Products Datasheet DRS4485 Dual RS485 Interface Transceiver Radiation Tolerant www.aeroflex.com/RadHard December 5, 2014 FEATURES  Radiation Performance - Total dose > 100 krad (Si)  Designed for RS485 and RS422 Interface Applications  Single +5V supply  +5V to -7V Bus common mode range source output  Driver maintains high impedance in three-state or with the power off  Combined Impedance of a driver output and receiver allows up to 32 transceivers on the bus  200 mV typical input hysteresis  Serial data rate 500KHz maximum  Voltage source output  Receiver output Hi for VIN Diff = 0V  < 5ns skew between BUS and BUSN complementary outputs  Monolithic construction  Designed for commercial, industrial and aerospace applications  Plainview is a Class H & K MIL-PRF-38534 manufacturer  Packaging – Hermetic Flat Package - 18-lead, 0.63"sq x 0.125"Ht - Weight - 3.50 grams max  Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G. GENERAL DESCRIPTION The Aeroflex-Plainview DRS4485 is a monolithic dual bus/line transceiver designed for multi-point data transmission standard RS485 applications. The DRS4485 meets TIA/EIA -485 requirements. The receiver has a fail-safe feature which guarantees a high output state when the BUS is open or shorted. VCC DI DR BUS BUSN DE Rx OUT Rx Channel 1 or 2 SCD4485 Rev G GND Rx EN FIGURE 1 – SCHEMATIC ABSOLUTE MAXIMUM RATINGS Parameter Range Operating Case Temp...