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Async RS232 to 5V TTL Interface Converter - DB9 to DB9

This tiny converter is perfect for programmable logic controllers.

Item #:  Async RS232 to 5V TTL Interface Converter - DB9 to DB9


Call 1-800-667-6625 for pricing and to place order.
Please Note: Once ordered, this product cannot be cancelled or returned for credit.
Call for Pricing
*Price excludes GST

Product Features

  • Simply and reliably converts 5-V TTL devices to RS232.
  • RS232 port powered.
  • Perfect for field service applications.
  • Bidirectional conversion of RS-232 to Transistor Transistor Logic (TTL) levels.
  • Converts two channels (TX and RX) in each direction.
  • Supports speeds of up to 115 kbps.


Convert 5-V TTL to RS232 to enable easy connection of many commercial and industrial machines still using TTL as a means of communication.

The RS-232 to TTL Converter enables you to control TTL devices. The converter is fast, too - it supports serial data rates of up to 115 kbps!

Just plug it in and you're ready to go. This tiny converter takes almost no space at all, and you can use it with virtually any microcontroller or programmable logic controller that supports TTL.

It also converts two channels (TX and RX) in each direction from RS-232 to TTL.

Tech Specs

* Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 1-800-667-6625.



Double Diamond Warranty Diamond

Double Diamond™ Warranty (Standard)

Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

The Double Diamond Warranty is our no-questions-asked warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!

Plus, get an Extended Double Diamond Warranty.

You can also extend your warranty or protect a previously purchased Black Box® brand product* for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 787-767-3500.

** Certain products may not be eligible.

What’s more, we also have a 45-day, no-questions-asked return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.


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