Digital TV Smart Antenna Connector

CEA-909 appears to have chosen a legacy connector for the smart antenna interface. Its the old DEC MMJ, and while it was a common part years back (even Digikey stocked the Amp 5-555237-2) the offset modular plug has long since seen its days come and go. Fortunately Cxtec still has some, and they are clearanced priced too! On the other hand, Amp/Tyco has them listed as obsolete, and there are no drawings online. Its always hard to tell for sure without a drawing though, ie, if CEA went proprietary, perhaps the latch is offset on the other side. I sure hope not, although either way, tooling will be a pain for small quantities.

The pinout is as follows:

Pin 1 gnd

Pin 2 +12VDC, 150mA current limit

Pin 3 gnd

Pin 4 gnd

Pin 5 data

Pin 6 gnd

The data specs are as follows:

8Khz pwm

2200 ohm load

Logic 0  41.7usec

Logic 1  83.3usec

Voltage levels

low 0-1V

high 2.0-5.5V

recommended drive from convertor or TV is a NPN with a 1K pullup to 5V to allow for bidirectional communications, ie CEA-909 mode B

4 thoughts on “Digital TV Smart Antenna Connector

  1. Looking for a ditigal TV “Smart antenna”. I’ve heard there is an antenna that will move it’s reception direction automatically to receive the best reception. I have a converter box with an outlet for such an antenna. Can’t seem to locate one. Can you help?
    Bob

  2. To locate CEA-909 compatible modular plugs and jacks, go to http://www.digikey.com In the top search box type “6p6c offset latch” (without the quotes). They currently show 11 jacks and 11 plugs available.

    You can use the 12 volts on pin 2 from the digital converter box to control a relay, to control line power to the TV set.

    Joe

  3. Thanks for the update! I greatly appreciate it. I thought the market for CEA-909 type of devices sort of died off. I’m glad to hear there is still some level of interest in it. I’m still a fan of OTA TV!

Leave a Reply

Your email address will not be published. Required fields are marked *

SEO Powered by Platinum SEO from Techblissonline