Port Powered RS-232 to TTL
Part number: ATC-102
In Stock : Available

ATC - 102 interface converter can send the signal RS–232C serial port data (TD) and receive data (RD) into TTL/CMOS compatible electrical level. It is the best choice of a remote Control device or point to multipoint communication bus. Transformation electrical level of 0 ~ 5 v. It can be directly from the Data within the RS-232 port transmitter data (TD), request to Send (RTS) or Data terminal ready (DTR) to obtain power. It also have the Automatic Send Data Line Control function. When to Send and receive Data, do not need the RTS control. So the power supply from serial port and Automatic flow Control makes you don't have to reset the hardware or install software. It is the best choice for MCU and TTL interface equipment close control.


  • DB9-S/P space saving connector
  • RS-232C data interface fully compatible with PC
  • DB9 connector and terminal are optional to TTL interface
  • Automatic direction control of transmitting data (TXD), zero-latency design
  • Working mode: Asynchronous communication
  • High efficiency serial port electricity stealing technology, need no external power supply, real three line (TD, RD, GND) mode communication
  • Communication speed: 0-115.2kbps
  • Transmission distance: 0-10 meter@24VAWG

Communication Parameters


Compatible with the EIA/TIA RS-232-C and TTL/CMOS standard



Working Mode

Point to point or point to multipoint, asynchronous communication

Direction Control

Automatic Send Data Line Control, automatic identification and control data transmission direction

Baud Rate

300-115.2kbps,automatic detection rate of serial port signals

Transmission Distance

TTL side 10 meters (19.2 kbps)



DB-9 male


DB9 male or 6-pin Terminal block

Power Supply Parameters

Power Supply

Without external power supply. Equipment from RS-232 port TXD, RTS, DTR signal for power supply.

Power Consumption

Static power consumption within 10 mA, dynamic average power consumption of 40 mA

Physical Characteristics


Plastic shell





Environmental Limits

Operating Temperature

-20 ~ 70°C (-4 ~ 158°F)

Storage Temperature

-40 ~ 85°C (-40 ~ 176°F)

Ambient Relative Humidity

5% to 95%(non-condensing)

Standards and Certifications


1、product application

     Company products are widely used with the electric power, industrial control, telecommunications, commerce, banking, insurance, security, smart CARDS, and other industries, production and sales of the products of the company, supporting complete, cost-effective, timely and thoughtful service, products are exported to Taiwan, Hong Kong, South Korea, Thailand, the United States, Poland, Italy, Spain, Egypt, Russia, Norway, Singapore, Malaysia, Indonesia, and other national regions, well received by clients at home and abroad.

2、The connection instance figure