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SERIAL RS232 TO TTL CONVERTERS

SerialComm offers the highest quality, high performance RS232 to TTL converter products with free shipping and same day express shipping starting at $16.95. Whether you are looking for 3.3V or 5V, industrial or commercial, port or external powered RS232 to TTL converters, we have the solution. All of our serial to TTL converters are industry-proven and both Sima S. Enterprises and SerialComm are ISO-9001:2015 TÜV certified data communication product suppliers. The superior quality and reliability of our serial converter products are designed for the most demanding mission critical applications. Our communication products provide cost-effective solutions that are safe and reliable for all your data conversion and device protection applications for any experienced engineer interfacing to their expensive industrial equipment, yet simple enough for home use by an amateur hobbyist. Sima S. Enterprises is committed to providing highest quality products on the market as well as the best customer support with 24 hour telephone tech support and general customer support.

  • The SerialComm TTL-232-5P is a high quality port-powered RS232 to 5V TTL converter with ESD and surge protection in a 9 pin format and is enclosed in a resilient housing. The TTL-232-5P is bi-directional which means it will communicate in both directions. Our converters are protected by a 5-year warranty and 30-day money back guarantee. This converter has both a 9-pin DB9 for simple cable installation or included 5-way terminal block for convenient screw terminal installation. 300 to 115.2K Baud Operation.

    Price: $16.95
  • The SerialComm TTL-232-5IE is a high quality, high performance, industrial-grade port-powered or externally powered RS232 to 5V TTL converter with DB9 or an included terminal block. This converter features ESD and surge protection in a 9 pin format and is enclosed in a resilient housing. The TTL-232-5IE is bi-directional with autosensing, auto-turnaround which means it will not only convert from RS232 to TTL but TTL to RS232 with no software drivers or flow control. Our converters are protected by a 5-year warranty and 30-day money back guarantee. 300 to 115.2K Baud Operation.

    Price: $18.95
  • The SerialComm TTL-232-33P is a high quality, high performance, port-powered RS232 to 3.3V TTL converter with DB9 or an included terminal block for maximum flexibility. This converter features ESD and surge protection in a 9 pin format and is enclosed in a resilient housing. The TTL-232-33P is bi-directional with autosensing, auto-turnaround which means it will not only convert from RS232 to TTL but TTL to RS232 with no software drivers or flow control. Our converters are protected by a 5-year warranty and 30-day money back guarantee. 300 to 115.2K Baud Operation.

    Price: $16.95
  • The SerialComm TTL-232-33IE is a high quality, high performance, industrial-grade port-powered or externally powered RS232 to 3.3V TTL converter with DB9 or an included terminal block. This converter features ESD and surge protection in a 9 pin format and is enclosed in a resilient housing. The TTL-232-33IE is bi-directional with autosensing, auto-turnaround which means it will not only convert from RS232 to TTL but TTL to RS232 with no software drivers or flow control. Our converters are protected by a 5-year warranty and 30-day money back guarantee. 300 to 115.2K Baud Operation.

    Price: $18.95
  • The SerialComm TTL-485-5P is a high quality, high performance, externally powered RS485 to 5V TTL converter with DB9 or included two terminal blocks one for RS485 side and the other for the TTL side. This converter features ESD and surge protection and is enclosed in a resilient housing . The TTL-485-5P is bi-directional with autosensing, auto-turnaround which means it will not only convert from RS485 to 5V TTL but 5V TTL to RS485 with on software drivers or flow control. It can also extend the TTL distance up to 4000 feet (1.2 km). Our converters are protected by a 5-year warranty and 30-day money back guarantee. The TTL-485-5P includes a free 120/220VAC power supply. 300 to 115.2K Baud Operation.

    Price: $29.95
9 Important Factors in Choosing the Right RS232/RS485 to TTL Converte
What is the difference between 5V and 3.3V TTL converters

5V TTL is the standard TTL or Transitor-Transitor Logic signal. 5V TTL produces an actual 5 volt output signal. While 3.3V TTL is typically called low voltage TTL or CMOS with outputs of 3.3 volts. The input threshold for the 5V converter is 2.6V while the input threshold input for 3.3V converter is 2.2V.

Why do terminal blocks make installation simple?

For RS232 to TTL adapters an included terminal block is very important. Some converters on the market do not come with them. A terminal block is a screw down wire adapter that attaches to the DB9 serial adapter. It simplifies cable installation to attached cables such as CAT5 or CAT5e without the need to make a custom cable or adapter. Without the terminal block a custom cable needs to be made and that can be time consuming and expensive. Even if you are using the DB9 in your present installation it makes sense to have one for future applications. All of our high quality RS232 to RS485 converters include terminal blocks at no extra charge.

Is optional external power necessary?

Many RS232 to TTL converters are port-powered. They derive power from the RS232 TX data signal using a capacitor charge pump. In most applications, especially if you are interfacing the RS232 to a host computer, port-power will work. In a very small percentage of cases where the RS232 port is not capable of port-powering the converter optional external power is helpful. Most RS232 ports provide from +/-6V to +/-12V signals where our port-power converters will almost always work. In the case where the signal is less then +/-6V the external power will supplement the powering of the converter. Our TTL-485-5P converter is not port-powered at all and rely solely on external power.

Do I need commercial or industrial grade?

Our RS232 to TLL converters come in Commercial and industrial grades. They basically operating temperature range classifications. Commercial grade has a typical temperature range of 32ºF to 158ºF (0ºC to 70ºC). For most indoor (home, lab or server room) applications this is sufficient and extended temperature ranges are not required because these locations are temperature controlled. Industrial classified devices have extended temperature ranges. Industrial grade typically has a temperature range from -40ºF to 185ºF (-40ºC to 85ºC). Commercial grade verses industrial grade has nothing to do with reliability engineering, vibration or shock susceptibility and other environmental factors. Please see the associated Wikipedia article for more information on temperature range classifications.

Are rugged converters really necessary?

Ruggedized converters are converters that are not susceptible to vibration and shock and must be specially reliability tested for that. Ruggedized converters are not really needed in most applications unless you are in an environment susceptible to vibration and other adverse environmental factors such as off-roading, on a boat or a plane. Some of our converters come with two terminal blocks one rugged and the other with 120 ohm selectable jumper. Both terminal blocks are of the highest quality and can be used in any application but SerialComm believes a terminal block with a friction held jumper cannot be ruggedized or vibration resistant and that is why give the customer the option of a terminal block without any friction held jumpers.

How is quality engineering & standardized product testing important?

Quality engineering and standardized product testing is an important factor to ensure reliability in our RS232 to TTL converter products. SerialComm products have an industry proven high reliability rate over 99% and are CE, FCC and RoHS certified as well as adhere to our ISO-9001:2015 quality program. And because of this, we offer a 5-year Replacement Warranty on our products. As part of our commitment to providing the highest quality and reliable products some of the tests performed on our products include temperature, EMI emissions and EMI radiation susceptibility and other environmental tests.

Importance of 12/7 telephone technical and customer service support?

We offer 24/7 telephone support as well as email support with quick turnaround. Some companies only offer email support. Serialcomm is dedicated to its products and customer support. If you need technical help or have a question you want to be assured you can talk to an engineer/customer/sales support at your schedule without having to wait for an email response that can take days.

Why we do not charge restocking fees?

A restocking fee is a handling charge that some companies charge when product is returned. Customers should be careful of companies that charge as high as a 20% restocking fee with the only customer disclosure in their Terms and Conditions statement. At Serialcomm we give you 30 days to decide whether you want to return the product at a full refund without any penalties or additional fees.

How free shipping and guaranteed express important?

We offer free shipping on all our products. This is a major savings for our customers. We do not offer a very low price and then add extra charges on the shipping to make up for the low price. We also offer optional expedited services by FEDEX, UPS and DHL. We offer FEDEX express services up to 6:30 PM EST or 4:00 PST which is the most flexible schedule on the market. If you decide to use your courier account we do not add any additional handling charges. We pride ourselves in our track record of getting packages to FEDEX on time.

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