Features and Benefits

  • 4 channels of 4 KV RMS isolation for 1 minute
  • External power source supported but not required
  • 15 KV serial ESD protection
  • Automatic baudrate detection
  • Compact size


The TCC-82 provides full electrical isolation for bi-directional serial communication between two RS-232 devices in a compact, industrial grade package. Both sides of an RS-232 connection are isolated optically to provide perfect protection against lightning surges, accidental high voltage shorts, and ground loops. The built-in, wide range isolators are tested to ensure that they can withstand more than 4 KV rms input to output for 1 minute. This means that the TCC-82 not only meets the requirements of general serial data communications, but also the high standards required by industrial automation and medical applications. The TCC-82 protects the TxD and RxD data lines, and also protects the RTS and CTS handshake lines for a total of 4 isolated channels to provide complete protection of your RS-232 applications.



External Power Source Not Required

The TCC-82 supports port-powered operation, which means that it can obtain power directly from the attached serial devices. Power is obtained from the RS-232 TxD, RTS, or DTR lines, regardless of whether the signal is high or low, eliminating the need for an external power supply. However, external power can be used if handshake lines are not available, if the serial cable is too long, or if the serial device is a low powered device. For external power, the TCC-82 can use a 5 to 12 VDC adaptor or a USB power cord. Note that both sides of the connection are powered independently, so if necessary, one side can rely on port power and the other on an external power source. When installing the TCC-82, we recommend that you connect all output signals. The TCC-82 obtains power from these signals even if they are not used by your system. Care should be taken when choosing the external power supply if your application requires the full 4 KV of isolation. Most commercial power supplies provide only 1500 VAC isolation between the primary and secondary windings. If you are using external power for both sides of the TCC-82, make sure that separate power sources are used, each with sufficient isolation protection.



Pin assignments

Serial Communication
Connectors DB9 male and DB9 female
Baudrate 50 bps to 921.6 Kbps
Signals RS-232: TxD, RxD, RTS, CTS, GND(Loop-back wiring: DTR to DSR and DCD)
ESD Protection 15 KV for all signals
Optical Isolation 4 KV for 1 minute
Physical Characteristics
Housing ABS
Dimensions 42 x 80 x 23.6 mm (1.65 x 3.15 x 0.93 in)
Weight 60 ± 5 g
Environmental Limits
Operating Temperature 0 to 60°C (32 to 140°F)
Storage Temperature -20 to 75°C (-4 to 167°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Power Requirements
Source of Input Power RS-232 port (TxD, RTS, DTR) or power input jack
Input Voltage 5 to 12 VDC
Power Consumption 20 mA @ 5 V
Standards and Certifications
Safety UL 60950-1
EMI FCC Part 15 Subpart B Class B

EN 61000-4-2 (ESD) Level 2,EN 61000-4-3 (RS) Level 2,

EN 61000-4-4 (EFT) Level 2,

EN 61000-4-5 (Surge) Level 2,

EN 61000-4-6 (CS) Level 2,

EN 61000-4-8 (SFMF) Level 1

Green Product RoHS, CRoHS, WEEE
MTBF (mean time between failures)
Time 959,780 hrs
Database MIL-HDBK-217F
Warranty Period 5 years
Details See