
#IC1157A
Async RS232 to 5V TTL Interface Converter - DB9 to DB9
This tiny converter is perfect for programmable logic controllers.
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.

1 Year Double Diamond™ Warranty (Standard)
Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box.
Our Double Diamond Warranty* protects your Black Box® brand products from manufacturing and/or material defects.
The IC1157A comes with a standard 1 Year Double Diamond Warranty*. During the warranty period, Black Box will repair or replace your damaged equipment at NO CHARGE!*
What’s more, we also have a 30-day return policy on most products. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package to receive a full refund.** Click here to find your local sales office to obtain a Return Authorization.
Extended Double Diamond Warranty.
Extend the warranty on select products or protect eligible previously purchased Black Box® brand items for an additional year - at just 10% of the original purchase price or for three years for only 20% of the purchase price.
* Warranty subject to certain exclusions and limitations. Click here to view our full terms and conditions.
** Returns contingent upon specific exclusions and limitations. Click here to view our full return policy.