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Serial / RS232 / RS485 / RS422 / TTL Converter Products

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  • INDUSTRIAL AND COMMERCIAL
  • RS232 To RS485 Converters
  • Standard or Isolated
  • Port or External Powered
  • Industry Proven 99.9% Reliable
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INDUSTRIAL RS232 TO 3.3V TTL CONVERTER WITH OPTIONAL EXT. POWER

Serialcomm - Model TTL-232-33IE

Sima S. Enterprises offers a diverse selection of high quality, high performance, RS232 / RS485 to TTL converter products from Serialcomm the choice manufacturer of low priced data communication products without sacrificing quality and reliability. Whether you are looking for industrial or commercial grade, port or externally powered converters we have the solution. Our bidirectional RS232 or RS485  to TTL converters are powered by very reliable signal processors featuring the autosensing feature and operate reliability and flawlessly without the need for flow control or software drivers. All of our serial to TTL converters come with optional terminal blocks for easy installation. All of our products are CE, FCC and RoHS certified by a reputable independent 3rd party testing facility and backed by our 30 day money back guarantee and 5 year warranty.

View all of our Serial to TTL Converters >>


INDUSTRIAL RS232 TO 3.3V
 TTL CONVERTER WITH
 OPTIONAL EXTERNAL 5V POWER

 

 

30 Day Money Back / 5 Year Replacement Guarantee

SerialComm Model: TTL-232-33IE
Download Specs.   TTL-232-33IE.PDF

FREQUENTLY ASKED QUESTIONS

$18.95 - IN STOCK

 

DESCRIPTION

The SerialComm TTL-232-33IE is a very high quality and very reliable compact industrial-grade bi-directional port-powered RS-232 to 3.3V TTL converter which converts full-duplex RS-232 to a low voltage 3.3V TTL,  This converter is ideal for any demanding application whether indoor in a lab, server room, office, at home or outdoors within the temperature range of -40ºF to 185ºF (-40ºC to 85ºC). The converter is port-powered and derives power by amplifying the RS232 data lines requiring no external power at all but also have the option to add external 5V power. This converter features auto sensing data turnaround eliminating the need for software drivers or handshake flow control.  The TTL-232-33IE has a DB-9 female connector on the RS-232 end, and DB-9 male connector on the TTL end. A separate terminal block with no exposed jumpers is included with purchase. The terminal block plugs into the TTL end of the converter, providing screw-lug wire terminations for the port.

PORT-POWERED WITH
 OPTIONAL EXTERNAL POWER

The SerialComm TTL-232-33IE has an optional 5V DC external power input,  The TTL-232-33IE is normally port-powered from the RS-232 data lines while using a capacitor charge pump built into the converter to provide necessary power. There are rare instances where the RS-232 host device is not capable of port-powering the converter due to signal incompatibilities or low voltage levels. If this should occur, all that is necessary is adding a 5V DC external power to the terminal block or DB9 connector. Because the TTL-232-33IE is industrial grade and port-powered with an optional 5V power input it makes this converter one of the most versatile RS-232 to TTL converters on the market.

FEATURES

  • Plug-and-Play (hot-pluggable)
  • Includes terminal block with no exposed jumpers
  • Flexible DB-9 cable or screw down wire installation
  • Operates from 300 to 115.2K baud
  • Port powered - no external power needed
  • Data direction auto-turnaround - no software is necessary
  • Built-in 600W/sec surge protection
  • Built-in 15KV static protection
  • 5 year manufacturer’s warranty
  • RoHS, CE and FCC certified
  • Manufactured to ISO-9001 standards
     

SPECIFICATIONS

COMMUNICATION
STANDARDS: EIA/TIA RS-232C Standard
BAUD RATES: From 300 Baud To 115,200 Baud
CONNECTOR TYPES: RS-232 Side: DB9 Female and TTL Side: either DB9 Male or 4-way Terminal Block
DISTANCE: RS-232 Side: 16 ft (5m) and TTL Side: up to 10 ft (3m)
ELECTRICAL
POWER SOURCE: Port Powered From RS-232 Data Lines - Optional 5V External Power
CURRENT CONSUMPTION: Less Than 10 mA
STATIC PROTECTION: 15KV Electric Static Discharge (ESD) Protection
SURGE PROTECTION: 600W/Sec Surge Protection
CONVERSION IC: Exar SP3232 - For more information from Exar regarding their IC; follow this link.
MECHANICAL
HOUSING: Rugged ABS
WEIGHT: With Terminal Block: 1.2oz (36 grams)
Without Terminal Block: 0.8oz (24 grams)
DIMENSIONS: With Terminal Block: 3.53 X 1.33 X 0.70 in (89.6 X 33.8 X 17.8 mm)
Without Terminal Block: 2.47 X 1.33 X 0.70 in (62.8 X 33.8 X 17.8 mm)
ENVIRONMENTAL
OPERATING TEMP.: -40ºF to 185ºF (-40ºC to 85ºC)
OPERATING HUMIDITY: 5% To 95% - No Condensation
QUALITY
PRODUCT SAFETY: CE, FCC and RoHS Conformance Certified
RELIABILITY: Low Failure Rate - 99+% Reliability Since Inception
WARRANTY: 5 Year Replacement Warranty
 
     

TTL VOLTAGE LEVELS

TTL INPUT

TTL OUTPUT

HIGH ( > 2.0V )

HIGH (3.3V)

LOW ( < 0.8V )

LOW (0.0V)

     

PINOUTS
 

RS232 SIDE

3.3V TTL SIDE

SIGNAL TX RX GND
PIN # 2 3 5
FUNCTION TX RX GND
 
SIGNAL IN OUT GND VCC
PIN # 1 2 5 6
FUNCTION TTL
IN
TTL
OUT
GND 5V
OPT.
 

DB9 FEMALE

DB9 MALE OR TERMINAL BLOCK

   

     

APPLICATIONS

FIGURE 1: CONNECTING RS-232 TO A 3.3V TTL DEVICE - PORT-POWER MODE


FIGURE 2: CONNECTING RS-232 TO A 3.3V TTL DEVICE - 5V POWER MODE

 


TROUBLESHOOTING INSTRUCTIONS

 

Using one TTL-232-33IE unit:

Check that all connections comply with the connection diagrams. Perform a loop back test on one unit: Connect the IN to OUT on the TTL port. Connect the RS-232C port to the PC RS-232 port. Running a hyper terminal program on the PC, send ASCII characters to the TTL-232-33IE converter from one PC port, and check that the characters are received at the same PC port. This tests that the transmit and receive functions of the TTL-232-33IE unit is working properly.

Using two TTL-232-33IE units:

Check that all connections comply with the connection diagrams. Perform a loop back test on two units: Connect the two TTL ports.  Connect IN to OUT and OUT to IN. Connect the two RS-232C ports to two PC RS-232 ports. Running hyper terminal programs on both PCs, send ASCII characters to the TTL-232-33IE converter from one PC port, and check that the characters are received at the 2nd PC port. Repeat the test in the opposite direction. This tests that the transmit and receive functions of both TTL-232-33IE units are working properly.

Download FREE FULL VERSION AccessPort Advanced Serial Monitor, Simulation and Data Analysis Software Tool.  This software tool is great for testing converters.  Supports Windows 98/XP/VISTA/WIN 7.  DOWNLOAD SOFTWARE AND USER MANUAL

 

 


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