ADM2487E 2.5 kV Signal Isolated, ESD Protected, Full/Half Duplex RS-485 Transceiver w/ Transformer Driver (500 kbps)
Isolated RS-485/RS-422 interfaces
Industrial field networks
Multipoint data transmission systems
The ADM2482E/ADM2487E are isolated data transceivers with ±15 kV ESD protection and are suitable for high speed, half-duplex or full-duplex communication on multipoint transmission lines. For half-duplex operation, the transmitter outputs and receiver inputs share the same transmission line. Transmitter Output Pin Y is linked externally to Receiver Input Pin A, and Transmitter Output Pin Z to Receiver Input Pin B. The parts are designed for balanced transmission lines and comply with TIA/EIA- 485-A-98 and ISO 8482:1987(E).
The devices employ the Analog Devices, Inc., iCoupler® technology to combine a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. An on-chip oscillator outputs a pair of square waveforms that drive an external transformer to provide isolated power. The logic side of the device can be powered with either a 5 V or a 3.3 V supply, and the bus side is powered with an isolated 3.3 V supply.
The ADM2482E/ADM2487E driver has an active high enable, and the receiver has an active low enable. The driver output enters a high impedance state when the driver enable signal is low. The receiver output enters a high impedance state when the receiver enable signal is high.
The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention might cause excessive power dissipation. The part is fully specified over the industrial temperature range of −40°C to +85°C and is available in a 16-lead, wide-body SOIC package.
- Isolated RS-485/RS-422 interfaces
- Industrial field networks
- Multipoint data transmission systems
Features and BenefitsIsolated RS-485/RS-422 transceiver, configurable as half or full duplexIntegrated oscillator driver for external transformer±15 kV ESD protection on RS485 input/output pinsComplies with TIA/EIA-485-A-98 and ISO 8482:1987(E)Data rate: 500 kbps5 V or 3.3 V operation (VDD1)256 nodes on busTrue fail-safe receiver inputsSafety and regulatory approvals
UL recognition: 2500 V rms for 1 minute per UL 1577VDE certificates of conformity
- UL recognition: 2500 V rms for 1 minute per UL 1577
- VDE certificates of conformity
DIN VVDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 560 V peak
DIN VVDE V 0884-10 (VDE V 0884-10):2006-12VIORM = 560 V peakThermal shutdown protectionOperating temperature range: −40°C to +85°CWide-body, 16-lead SOIC package
- DIN VVDE V 0884-10 (VDE V 0884-10):2006-12
- VIORM = 560 V peak
Frequently Asked Questions
|Part Number||Package||Packing Qty||Temp Range||Price 100-499||Price 1000+||RoHS|
|ADM2487EBRWZ Production||16 ld SOIC - Wide||OTH 47||-40 to 85C||4.3||3.64||Y|
|ADM2487EBRWZ-REEL7 Production||16 ld SOIC - Wide||REEL 400||-40 to 85C||0||3.64||Y|