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LTC489CN Datasheet(PDF) 1 Page - Linear Technology |
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LTC489CN Datasheet(HTML) 1 Page - Linear Technology |
1 / 12 page 1 LTC488/LTC489 Quad RS485 Line Receiver S FEATURE s Low Power: ICC = 7mA Typ s Designed for RS485 or RS422 Applications s Single 5V Supply s – 7V to 12V Bus Common Mode Range Permits ±7V Ground Difference Between Devices on the Bus s 60mV Typical Input Hysteresis s Receiver Maintains High Impedance in Three-State or with the Power Off s 28ns Typical Receiver Propagation Delay s Pin Compatible with the SN75173 (LTC488) s Pin Compatible with the SN75175 (LTC489) S APPLICATI s Low Power RS485/RS422 Receivers s Level Translator The LTC ®488 and LTC489 are low power differential bus/ line receivers designed for multipoint data transmission standard RS485 applications with extended common mode range (12V to – 7V). They also meet the requirements of RS422. The CMOS design offers significant power savings over its bipolar counterpart without sacrificing ruggedness against overload or ESD damage. The receiver features three-state outputs, with the receiver output maintaining high impedance over the entire com- mon mode range. The receiver has a fail-safe feature which guarantees a high output state when the inputs are left open. Both AC and DC specifications are guaranteed 4.75V to 5.25V supply voltage range. DESCRIPTIO APPLICATI TYPICAL 120 Ω 4000 FT 24 GAUGE TWISTED PAIR DI RECEIVER 1/4 LTC488 120 Ω DRIVER 1/4 LTC486 RO EN EN 1 2 4 12 3 EN EN 120 Ω 4000 FT 24 GAUGE TWISTED PAIR DI RECEIVER 1/4 LTC489 120 Ω DRIVER 1/4 LTC487 RO EN12 1 2 4 3 EN12 LTC488/9 TA01 , LTC and LT are registered trademarks of Linear Technology Corporation. |
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