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Serial Port Powered RS-232 Isolator w/ 4 KV Isolation and 15 KV ESD Surge Protection

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Mfg Part Number:  TCC-82  
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Price: $132.50
In Stock: 18
No Sales Tax except these states
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TCC-82 is a signal isolator that provides bi-directional serial communication with full electrical isolation between two RS-232 devices. This compact sized isolator isolates both sides of the connection optically to provide perfect protection from lightning surges, accidental high voltage shorts, and most of all, ground loops. The built-in, wide range optocouplers are tested to ensure that they can withstand more than 4 KV rms input to output for 1 minute. This means that TCC-82 not only meets the requirements of general serial data communications, but also the high standards required by industrial automation and medical applications. In addition to the TxD and RxD data lines, TCC-82 also protects the RTS/CTS handshake lines on its two D-type connectors.

Independent RS-232 Serial Port Power

TCC-82 has two power inputs, which means that both sides of the isolator must be powered independently and separately to maintain the isolation. Ideally, both sides can derive power directly from the RS-232 TxD data lines and the RTS/DTR handshake lines, regardless of whether the signal is high or low. This also eliminates the requirements of using external power supplies in most systems. The configuration of the wires and the entire system can be maintained easily. If the applications and devices on one or both sides do not have handshake lines available, the serial cable is too long, or low powered serial ports have been used as the power source, then external USB power cords or 5 to 12 VDC adapters can be used as an alternative.

When connecting TCC-82, it is recommended that all signals that are outputs be connected. TCC-82 derives power from these signals, even if they are not used by your system. Care should be taken when choosing the external power supply if TCC-82's full 4 KV of isolation is required to operate correctly. Most of the commercial power supplies that are available on the market only provide 1500 VAC isolation between the primary and secondary windings. If both sides of the isolator require external power, two separate isolated supplies are required.

4-channel 4 KV RMS Isolation for 1 minute
Dual self-powered or selectable external power source
Surge protection, 15 KV ESD
Auto baudrate sensing
Compact size

Serial Communication
Female DB9 Side (Bi-Directional Reversible Connector)

Signals: Pass through TxD, RxD, RTS, and CTS
Loop back: RTS to CTS, DTR to DSR and DCD

RS-232 Male DB9 Side
Signals: Pass through TxD, RxD, RTS, and CTS
Loop back: DTR to DSR and DCD
50 bps to 115.2 Kbps
Surge protection
Optical Isolation
4 KV RMS for 1 minute
Operating Temperature
0 to 60°C (32 to 140°F)
Storage Temperature
-20 to 75°C (-4 to 167°F)
5 to 95% RH
Power Consumption
Input Power Source
Serial RS-232 Port: TxD, RTS, DTR; Ext Power Input (jack)
Inpout Power Protection
5 to 12 VDC
Power Consumption
10 mA @ 5 VDC
Dimensions (W x D x H)
42 x 80 x 23.6 mm
60 ± 5g
2 years
Regulatory Approvals
CE Class B, FCC Class B


Power Requirements
Power Consumption 20 mA @ 5 V
Input Voltage 5 to 12 VDC
Source of Input Power RS-232 port (TxD, RTS, DTR) or power input jack
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)
MTBF (mean time between failures)
Time 959,780 hrs
Database MIL-HDBK-217F
Physical Characteristics
Weight 60 ± 5 g
Dimensions 42 x 80 x 23.6 mm (1.65 x 3.15 x 0.93 in)
Housing ABS
Standards and Certifications
EMI FCC Part 15 Subpart B Class B
Safety UL 60950-1
EMS 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
Serial Communication
Signals RS-232: TxD, RxD, RTS, CTS, GND 
(Loop-back wiring: DTR to DSR and DCD)
Connectors DB9 male and DB9 female
ESD Protection 15 KV for all signals
Optical Isolation 4 KV for 1 minute
Baudrate 50 bps to 921.6 Kbps
Warranty Period 5 years
Details See
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