Datasheet
This file is an introduction to ADM485E/ADM487E/ADM1487E data transceivers. The transceiver has ±15 kV ESD protection, suitable for half-duplex communication, and operates at 5V. The data rates are ADM487E: 250 kbps, ADM485E/ADM1487E: 2.5 Mbps.
Datasheet
The ADM1487 is an ultra-low power RS-485/RS-422 transceiver consisting of one driver and one receiver per package. Quiescent operating current is typically 80µA and 1µA in shutdown mode. The driver and receiver both have three-state outputs. This allows multiple drivers to be connected to an RS-485/RS-422 bus, or several receiver outputs to be connected to a serial data bus. The driver will maintain a high-impedance output state even with power off, while the receiver features fail-safe operation that guarantees a logic high output if the inputs are left open-circuit. The device has slew-rate limited drivers to minimize electromagnetic interference (EMI) and reduce reflections caused by incorrectly terminated cables.
