RS232 TTL embedded converter
TTL232 is an embedded converter of RS232 serial line signals to TTL signals. Its miniature footprint makes it simple to embed into an RS232 connector cover (D-Sub9, Cannon9).
Simplified converter diagram
Simplified converter diagram
Technical parameters
- Converts RxD and TxD signals of RS232 line
- Power: from signals DTR and RTS or an external power supply 3.4 až 5.5 V DC
- Current conspumption: 5 V, typ. 8 mA
- Current conspumption: 3.3 V, typ. 3.5 mA
- Onboard power indicator (Green LED)
- RS232 connector: D-SUB 9 F (Cannon 9 female)
- Maximum speed: 460 kbps
- Operation temperature: -40 to +85 °C
- Dimension: 31 x 33.5 x 13 mm
- Weight: 10 g
- Connector cover can be ordered here.
Please do not hesistate to contact us in case you need any custome midification done to the TTL232 device.
How to power the converter from DTR and RTS signals?
If you are using third-party software: Look for Enable DTR, Enable RTS, or similar settings. It is also possible that the software sets the DTR and RTS signals automatically. This can be verified by measuring a voltage greater than approx. 7 V on pins number 4 or 7 on RS232 with a multimeter (measured against terminal no. 5, which is ground).
If you are writting your own software: Set the DTR or RTS signals to the active level (L). For example, in the .NET (C #, VB) programming environment, these are the SerialPort.DtrEnable and SerialPort.RtsEnable properties, respectively.
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