TRA1 & TRA2 Input Ports
This digital non-isolated input port accepts high-speed differential signals with a wide common-mode input voltage range. It complies with TIA/EIA-644 (LVDS) standard. The active fail-safe feature assures a high-level output when the port is unconnected. The port is protected against electrostatic discharge. It embeds a common-mode choke for the rejection high-frequency common-mode noise.
Trigger lines electrical specifications
Parameter |
Min |
Typ |
Max |
Unit |
Positive-going differential input voltage threshold |
|
|
50 |
mV |
Negative-going differential input voltage threshold |
-50 |
|
|
mV |
Differential input voltage hysteresis |
|
50 |
|
mV |
Magnitude of differential input voltage |
0.1 |
|
3 |
V |
Voltage at any input relative to GND |
-4 |
|
5 |
V |
Input impedance |
|
100 |
|
Ω |
In the following schematic, the input pin corresponds to the TRA1 or TRA2 signal.
Equivalent schematic of the trigger input line