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Serial / RS232 / RS485 / RS422 / TTL Converter Products

USB Adapters - Fiber Optic Converters - Ethernet Converters

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USB to 3.3V TTL Converter

Serialcomm - MODEL USB-TTL-33

IMPORTANT MESSAGE FROM THE
CEO OF SIMA S. ENTERPRISES

Since we dropped their product line a long time ago, Commfront based in Singapore, has been posting false and defamatory statements on the internet.  The latest is that "we simply bought our certificates without testing" and "our testing time is 3 days".  These and other statements made by Commfront are unequivocally false and without basis.  These false statements stem from faltering sales by an Asian company who hires a U.S. distributor to ship their products on their behalf.

USB to TTL converter

 USB to 3.3V TTL Converter USB to 3.3V TTL Adapter

      CERTIFICATIONS:     rohs certified ce certified fcc certified iso 9001 certified 



Sima S. Enterprises offers the finest quality serial USB to TTL converters on the market at low prices. Our USB to TTL converter products can be used for any application whether it is commercial or industrial. If you need protection, reliability and power efficiency at low prices we have the solution. Our USB to TTL converters come in a number of varieties including 5V and 3.3V versions.

SERIAL USB TO
3.3V TTL CONVERTER
 WINDOWS 7/VISTA/XP/98/
WIN CE/MAC/LINUX COMPATIBLE

 

30 Day Money Back / 5 Year Replacement Guarantee

"Simple and Hassle-Free Operation
Completely Auto-Sensing and Self-Adjusting
 No Manual Settings Necessary At All"

USB TO 3.3V TTL CONVERTERS

SerialComm Model: USB-TTL-33
Download Specs.   USB-TTL-33.PDF

  DOWNLOAD DRIVERS

OUR GUARANTEE

CE - FCC - RoHS
CONFORMANCE
DECLARATION

FREQUENTLY ASKED QUESTIONS

$54.95 - IN STOCK

  

USB TYPE A FEMALE TO 3.3V TTL 
DB9 MALE OR TERMINAL BLOCK

The SerialComm USB-TTL-33 is a high quality economical bi-directional port powered USB to 3.3V TTL converter in a 9 pin format. It is a combination of two products: USB to RS232 Adapter (USB-232-2) and the RS232 to 3.3V TTL Converter (TTL-232-33P).  It can convert any standard full duplex USB port to a 3.3V TTL signal and vice versa. The unit is powered from the USB port. It also supports data direction auto-turnaround. Therefore, no external power or flow control is required. The data direction auto-turnaround automatically enables the TTL driver when data is present on the USB side making the device plug-and-play, requiring no software drivers. The USB-TTL-33 has a Type A female connector on the USB side and either a DB9 male connector or 5-way terminal block on the TTL side. Separate terminal block is included in package.

The USB-TTL-33 uses the latest FTDI chipset and is fully compatible with Windows 7/ Vista / XP / 98 / Server 2008 / Server 2005 / Server 2003 /Server 2000 (32 BIT). Windows 7 / Vista / XP / 98 / Server 2008 / Server 2005 / Server 2003 (64 BIT), Win CE, Mac 8.6 / 9.x / 10.x and Linux.

FEATURES

  • Port Powered: no external power is necessary
  • Data Direction, auto-turnaround, no flow control is necessary
  • Plug-and-Play (Device is hot-pluggable)
  • 5 Year Manufacturer’s Warranty
  • CE, FCC, RoHS  and ISO 9001 Compliance Certified
  • Built-in surge protection, static protection and circuit protection
  • Surface Mount Technology manufactured to ISO 9001 Standards
     

USB TO 3.3V TTL CONVERTER SPECIFICATIONS

PART NUMBER: USB-TTL-33
STANDARDS: USB 1.1 and USB 2.0; EIA/TIA RS-232C Standard
BAUD RATES: From 300 Baud To 115,200 Baud
POWER SOURCE: Port Powered From The USB Port
CURRENT CONSUMPTION: Less Than 100 mA
CONNECTOR TYPES: USB Side: Type A Female and 3.3V TTL: either DB9 Male or 5 Way Terminal Block
DISTANCE: USB Side: 10 ft (3m) and TTL Side: 10 ft (3m)
STATIC PROTECTION: 1500W Static Protection
SURGE PROTECTION: 600W Surge Protection
WEIGHT: 3.2oz (58 grams)
DIMENSIONS: RS-232 / TTL Housing: 5.49” X 1.42” X 0.73” (139.6 mm X 36.1 mm X 18.6 mm)
OPERATING TEMP.: 14°F to 140°F (-10°C to 60°C)
OPERATING HUMIDITY: 5% To 95% - No Condensation
     

TTL CONVERTER CONNECTOR PINOUTS
 

RS232 SIDE

3.3V TTL SIDE
SIGNAL DCD DTR DSR RTS CTS TX RX GND
PIN # 1 4 6 7 8 2 3 5
FUNCTION TIED TIED TX RX GND
 
SIGNAL NC TTL
IN		 TTL
OUT		 NC GND
PIN # 1 2 3 4 5
FUNCTION NC TTL
IN		 TTL
OUT		 NC GND
 

DB9 FEMALE

DB9 MALE OR TERMINAL BLOCK

USB to TTL Connector

USB to 3.3V TTL Connector    USB to 3.3V TTL Terminal Block
     

CONVERTER APPLICATIONS

USB to 3.3V TTL Adapter

FIGURE 1: CONNECTING THE RS232 PORT TO A 3.3V TTL DEVICE


 

TROUBLESHOOTING INSTRUCTIONS

 

Perform a loop back test on one USB-TTL-33 converter. Tie signals TTL OUT to TTL IN of the USB-TTL-33. Attach the converter to a serial port on a PC and using HyperTerminal send a character from one and see if it echoes to the other. This will test both TTL input and TTL output functions.

  

 
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SIMA S. ENTERPRISES LLC
 www.rs232-converters.com
 email:sales@simaenterprises.com
PHONE:1-877-647-7434
FAX: 1-732-749-3598

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NEW JERSEY OFFICE
1298 Evans Road
Wall Township, NJ 07719

FLORIDA OFFICE P.O. BOX
5944 Coral Ridge Road #259
Coral Springs, FL 33076
2006-2010 Copyright Protected - Sima S. Enterprises LLC - Terms & Conditions - Privacy Statement   -     Protected By Copyscape

OUR CUSTOMER GUARANTEE!

We are a full service company offering the highest quality converters at a low price.

 

 

Quality Guarantee - SerialComm converters are low priced, high quality products and made to last a lifetime. They are manufactured in a ISO-9001 certified facility using surface mount technology with lead free components.  All converters are pretested prior to shipment and are fully guaranteed for 5 years.  There are no converters, Commercial or Industrial that surpass SerialComm's quality standards at any price tag. Satisfaction Guarantee - We offer a 100% 30 Day Money Back Guarantee which most companies do not offer.  If for any reason, you 're not satisfied with your purchase within 30 days, you can return it with no penalties.  We will return the full value of the order minus shipping costs. We do not reimburse express shipping fees.  We do not add restocking fees when returning a purchase within 30 days. Manufacturer's Warranty – SerialComm offers a 5-year Workmanship Warranty.  We are so confident our product are built to last, within a 5 year period from the time of purchase, if a rare event of a malfunction should occur; we will replace your product for free.  Fill out our RMA form and we will issue you a RMA number for return of your product.   We do not issue refunds after 30 days of purchase. Express Shipping Guarantee - We specialize in shipping express orders on-time.  If FEDEX express shipping is selected before 6:30 PM E.S.T. and the items are in stock; we guarantee that we will get the order delivered to FEDEX on-time for the scheduled express delivery.  If we fail do to so, we will ship you the package the next day and credit you the full value of the order. (LIMITED TO $100 PER ORDER).  Please refer to our Terms for full details.
 

Free Worldwide Shipping - We offer FREE shipping with all SerialComm products with TRACKING!  Not just to the U.S., we ship our products worldwide for FREE.   Given availability of items, they are shipped the next business day with an ETA of 2-5 days for domestic and 5-15 days for International orders using USPS, FEDEX or DHL couriers.  Express Shipping is extra and shipped the same day ordered.

  

Sales & Technical Support -We offer sales and technical support by phone, live chat and email 24/7.  Our sales team  provides immediate customer support such as taking orders or assisting in expedited shipping requirements.  If you need technical help, an experienced Electrical Engineer can offer assistance.  Our technical support team can be an invaluable service which we provide for free.

  

Purchase Orders - We accept purchase orders as well as credit cards and PayPal. We understand that many companies prefer to issue purchase orders rather than using credit cards.  We accept purchase orders with NET 30 terms in most cases.    Not too many companies on the internet are willing to accept purchase orders but we do.  Purchase orders can be faxed or emailed.

  

Fully Certified - Certifying Data Communication Products is extremely important for compatibility, safety and standards compliance.  All of our products are fully certified and passed CE, FCC and RoHS compliance tests.  These certificates provide confidence that our products are the highest quality while also environmentally safe and compatible with other devices.