Product Details
●The ADM3070E–ADM3078E are 3.3V, low power data transceivers with ±15kV ESD protection suitable for full and half duplex communication on multipoint bus transmission lines. They are designed for balanced data transmission and comply with TIA/EIA standards RS-485 and RS-422. The devices have a 1/8 unit load receiver input impedance which allows up to 256 transceivers on a bus. Since only one driver should be enabled at any time, the output of a disabled or powered down driver is three-stated to avoid overloading the bus.
●The receiver inputs have a true failsafe feature which eliminates the need for external bias resistors and ensures a logic high output level when the inputs are open or shorted. This guarantees that the receiver outputs are in a known state before communication begins and when communication ceases.
●The ADM307xE are 3.3 V, low power data transceivers with ±15 kV ESD protection suitable for full- and half-duplex communication on multipoint bus transmission lines. They are designed for balanced data transmission, and they comply with TIA/EIA standards: RS-485 and RS-422.
●The devices have a ⅛ unit load receiver input impedance, which allows up to 256 transceivers on a bus. Because only one driver should be enabled at any time, the output of a disabled or powered-down driver is tristated to avoid overloading the bus.
●The receiver inputs have a true fail-safe feature, which eliminates the need for external bias resistors and ensures a logic high output level when the inputs are open or shorted. This guarantees that the receiver outputs are in a known state before communication begins and when communication ceases.
●Applications
● Power/energy metering
● Industrial control
● Lighting systems
● Telecommunications
● Security systems
● Instrumentation
●### Features and Benefits
● TIA/EIA RS-485/RS-422 compliant
● ±15 kV ESD protection on RS-485 input/output pins
● Data rates
●ADM3070E/ADM3071E/ADM3072E: 250 kbps
● Half- and full-duplex options
● True fail-safe receiver inputs
● Up to 256 nodes on the bus
● −40°C to +125°C temperature option
● Hot-swap input structure on DE and RE pins
● Reduced slew rates for low EMI
● Low power shutdown current (all except ADM3071E/ ADM3074E/ADM3077E)
● Outputs high-Z when disabled or powered off
● See data sheet for addional features
