- Adds
one TTL 3.3v port to your USB port.
- 300 to 115.2K Baud operation (auto-sensing and
self-adjusting).
- Supports
Windows 7/Vista/XP/Server2008/Server2003/2000/98
(32-bit), Windows
7/Vista/XP/Server2008/Server2003 (64-bit), Win CE, Mac, and Linux.
- Supports remote wakeup and power management.
- Plug and play (hot-pluggable, data format
auto-sensing and self-adjusting).
- Port-powered, no external power required.
- No IRQs required, no IRQ conflicts.
- Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
-
Safety: Strictly certified by world-class lab SGS / TUV
(Cert
No. EM/2008/20060C,
EM/2008/20061C,
SG-CE-090012).
- 5-year
manufacturer's warranty. |
| |
SPECIFICATIONS (USB TO TTL
3.3V CONVERTER
/ ADAPTER)
|
|
|
Part Number: |
USB-232-1+TTL33-232-1 |
|
Compatibility: |
USB 2.0
(backward compatible) and TTL/CMOS 3.3v level |
|
Power Source: |
From USB port |
|
Current
Consumption: |
Less than
100mA |
|
Baud
Rates: |
300 to 115,200bps (Auto-sensing &
Self-adjusting) |
|
Distances: |
USB side: 10ft (3m); TTL side: 10ft (3m) |
|
Connectors: |
USB Side:
Type A Female;
TTL side: DB-9
Male;
Termination
Board: DB-9 Female and a 3-Way Terminal Block |
|
Dimensions (H x W x D): |
0.63 x 1.3 x 5.5 in (16 x 32 x 140
mm)
(excluding cable) |
|
Cable
Length: |
3.3 ft (1
m) |
|
Weight: |
3.8
oz (109 g) |
|
Operating Temperature: |
32ºF to
95ºF (0ºC to 35ºC) |
|
Operating Humidity: |
Up to 90% RH (no condensation) |
|
|
TTL SIGNAL LEVELS
|
|
|
TTL Input |
TTL Output |
|
High
(>2.0V) |
High
(>2.4V) |
|
Low (<0.8V) |
Low (<0.6V) |
|
|
|
|
CONVERTER CONNECTOR / TERMINAL
BLOCK PINOUTS
|
| |
|
USB
Side |
 |
|
|
USB
Type A Connector (view from front) |
|
|
|
TTL Side (DB-9 Male Connector / Terminal Block): |
|
DB-9 Pin: |
1 |
3 |
5 |
|
Terminal
Block: |
TX |
RX |
GND |
|
Function: |
TTL OUT |
TTL IN |
GND |
|
|
|
 Note:
The USB-TTL3.3V converter comes with a 3-way terminal block for
easy wire connections. However, you may choose not
to use the terminal block provided and simply follow
the above table for pin assignments. |
|
|
|
DB-9 Male (view from front) /
Terminal Block |
| |
CONNECTIONS
(USB
TO TTL 3.3V CONVERTER)
|
|
|
 |
|
(USB to TTL
3.3v Converter Connection Diagram) |
|
|
TROUBLESHOOTING INSTRUCTIONS
FOR USB TO TTL 3.3V CONVERTER
|
|
|
1) Driver installation |
 |
|
|
|
Make sure
that the USB-TTL3.3V converter is connected to your USB port, and the
driver is installed correctly (as shown above); otherwise, please
reinstall the driver (refer to user
manual for details). |
|
|
2) Loopback Test |
 |
- Connect a USB-TTL3.3V
converter to
your PC's USB port and short TX and RX on the TTL
terminal block (as shown above).
-
Run 232Analyzer
FREE version software on your computer.
- Select "ASCII" for
both the Send and Receive data formats. Then send
command and/or string such as "CommFront" from the
232Analyzer software. You should receive an echo of the
command/string sent ("CommFront"). By performing a
simple loopback test like this, you can test both the
transmitter and receiver of the converter. This is very
helpful when you are in doubt about the performance of
your converter.
|
Screenshot: Send/receive
commands from 232Analyzer software. |
|
232Analyzer is an advanced RS232 Serial Protocol Analyzer
software
that allows you to control, monitor and analyze serial port
(RS232 / RS485 / RS422 / TTL, etc.) activities.
Not just the data,
it also allows you to monitor or change RS-232's line
states: RTS, CTS, DTR, DSR, DCD, and RI.
The FREE version (no time
limitation) can be downloaded from
here.
TECH NOTES
RS-232: 3 easy steps to understand and control
your RS232 devices
RS-485/RS422:
Building a reliable RS485/RS422 network |
| |
