Other Parts Discussed in Thread: TVS1400,
Hi,
I am designing a product has the controller and communication modules. Controller module will be installed in a pit under the ground. Communication module will be installed over the ground. Both these modules are exposed to external harsh environment conditions. The distance between controller and communication module will be 10metre (max), and connected through a cable. The max data rate between these two module is 1Mbps. The noise through the ground is mainly due to external environmental factors (like lightning, thunderstorms, etc). Sometimes, the noise can be due to interference from external factors like ESD, emissions from external EMI sources, etc. I want to ensure that the communication between the modules is reliable, and also the have suitable protections within the modules, in this harsh environment.
I am pursuing single-ended as well as differential signalling along with power lines between these two modules, due to various reasons. The voltage levels present on these signals are as below.
a) Single-ended signal with 3V level
b) Differential signal with +/-12V level
c) Power lines (both VCC and GND) with 3V level
Can you suggest suitable IC(s) with sufficient channels that can protect my below combination of signals, from various possible noises in this harsh environment? Kindly consider that the protection requirement must be preferably Bi-directional (protecting either positive or negative noise).
1) 1 single-ended signal along with VCC & GND
2) 1 differential signal along with VCC & GND
Regards,
Vikas Chandra Rao.