ivar
Junior Member level 1
RS232 buffer
I wanted to sniff communication between two RS232 devices. Thishttps://embeddedfreak.wordpress.com/2008/08/17/rs232-serial-sniffermonitoring-circuit/ link presents a simple solution but I want to make sure that my 'sniffer' does not load the communication link.
To that effect, I was wondering if I could use a MAX-232 as a 'looping' buffer:
RS232 in -->TTL out-->TTLl in-->Rs232 out
The MAX-232 will be powered by an external 5v. Is this a fool proof way of sniffing without loading the line? Does the MAX232 even act as a buffer in this configuration? If not. are there inexpensive RS232 buffer ICs available? All the 74xx range of buffer ICs seem to work only at TTL levels.
I wanted to sniff communication between two RS232 devices. Thishttps://embeddedfreak.wordpress.com/2008/08/17/rs232-serial-sniffermonitoring-circuit/ link presents a simple solution but I want to make sure that my 'sniffer' does not load the communication link.
To that effect, I was wondering if I could use a MAX-232 as a 'looping' buffer:
RS232 in -->TTL out-->TTLl in-->Rs232 out
The MAX-232 will be powered by an external 5v. Is this a fool proof way of sniffing without loading the line? Does the MAX232 even act as a buffer in this configuration? If not. are there inexpensive RS232 buffer ICs available? All the 74xx range of buffer ICs seem to work only at TTL levels.