I have a question about ADM485, RS-485 transceiver.
The datasheet says this device has fail-safe feature.
Could you be explain what is the fail safe feature of…
is it safe to connect to RS-485 few ADM485 and ADM3485?
Some devices have Vcc=+3,3V and ICs ADM3485 are used for them,
some devices have Vcc=+5V and ADM485 are used.
No, the ADM485 does not implement a failsafe feature with an internal bias circuit.
The failsafe feature is not implemented with internal pull-up/down resistors.
The ADM485 has a typical failsafe operation, but not a guaranteed failsafe…
Why do you need a histogram of the driver and receiver propagation delay?
The minimum and maximum propagation delays are gauranteed by characterisation.
There is properly working kit
I need to increase the PCB power supply for ATmega8 up to …
For MTBF calculations in accordance with MIL_HDBK_217F, I need the number of transistors (or MTBF/FIT) for the following devices:
Where it's possible to find this data? Can anyone help me?
I have used an exception when using ADM485E communication. Some questions I would like to ask.
(1) ADM485E supports open fail safe function in RX mode in the datasheet, and the output is high level.
When all RS-485 driver is RX mode,the AB…
i have this circuit
and when i clear DE and RE pins output receive of adm485 make allot noise that make my MCU to RX overflow
is it normal or i should do something to fix it?
i forgot to put 100nF on VCC of it . cant it be the problem?
Yes - but also have a look again into the data sheet - RECEIVER OPEN CIRCUIT, FAIL-SAFE.