ADM487E 5 V, ±15 kV ESD Protected, Half Duplex RS-485/RS-422 Transceiver (250 kbps, ¼ Load)
The ADM485E/ADM487E/ADM1487E are 5 V low power data transceivers with ±15 kV ESD protection suitable for halfduplex 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 ADM487E and the ADM1487E have a 1/4 unit load receiver input
impedance that allows up to 128 transceivers on a bus, while the ADM485E allow up to 32 transceivers on a bus. Since only one
driver is enabled at any time, the output of a disabled or powerdown
driver is three-stated to avoid overloading the bus.
Energy/power metering
Lighting systems
Industrial control
Telecommunications
Security systems
Instrumentation
The driver outputs are slew rate-limited in order to reduce EMI
and data errors caused by reflections from improperly terminated buses. Excessive power dissipation caused by bus contention or output shorting is prevented with a thermal shutdown circuit. The parts are fully specified over the industrial temperature ranges and are available in 8-lead SOIC packages
Applications
Features and Benefits- TIA/EIA RS-485/RS-422 compliant
- ESD protection on RS-485 I/O pins
- ±15 kV human body model
- Data rates: 250 kbps
- Half-duplex options
- Reduced slew rates for low EMI
- −7 V to +12 V common-mode input range
- Thermal shutdown and short-circuit protection
- 8-lead SOIC packages
| Building Technology |
Data Sheets
Application Notes
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADM487EARZ Production | 8 ld SOIC | OTH 98 | -40 to 85C | 1.45 | 1.32 | Y |
| ADM487EARZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 0 | 1.32 | Y |
| ADM487EWARZ Production | 8 ld SOIC | OTH 98 | -40 to 85C | 1.76 | 1.5 | Y |
| ADM487EWARZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 0 | 1.5 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-RS485HDEBZ | Standard Half-Duplex RS-485 Evaluation Board | 30 | Y |
Reference Materials
