B&B Electronics 422TTL33 - Datasheet - Manual

www
.
bb
-
elec
.
com
|
ttL to rS-422 Converters
422TTL, 422TTL33
Models 422TTL and 422TTL33 convert RS-422 or EIA-530 signals to TTL at
data rates up to 115.2 Kbps. Two channels are used to convert RS-422 to
TTL and two channels are used to convert TTL to RS-422.
Select Model 422TTL for 5 VDC TTL or select Model 422TTL33 for 3.3 VDC
TTL. A DB25 male connector is used on the TTL side and a DB25 female
connector is used on the RS-422 / EIA-530 side. The converters support
RD, TD, RTS, and CTS. Pin 7 is signal ground for both connectors.
These units can work at baud rates up to 115.2 Kbps. Open pads are
provided for each line. Therefore, if you choose to, you can change the pin
connectors for any of the 4 channels.
When converting a second RS-422 channel, use the corresponding RTS A
and RTS B pins (refer to the Quick Start Guide).
These converters invert the TTL signal. Refer to the specifications table
to determine polarity. An external +12 VDC power supply is required (not
included).
• Convert 2 channels in each direction from TTL (“Transistor
Transistor Logic)” to RS-422
• Baud rates up to 115.2 kbps
• 5V and 3.3V TTL options
• Open pads to change pin conf iguration
proDuCt FeatureS
aCCeSSorieS
422PS - 12VDC@100mA wall transformer power supply, 2.5mm plug
E1250BL-BB3 - 220-240 VAC to 12 VDC wall power supply, 2.5mm plug
Euro CEE7/7 plug
232CAMS - DB25 male to DB9 female adapter cable, 15.24 cm/6 in
PS1EU-1000 - 220-240 VAC to 12 VDC Power Supply, jack, Euro CEE7/7 plug
PS1UK-1000 - 220-240 VAC to 12 VDC wall power supply, jack, UK BS-1363 plug
orDering inFormation
Model
nuMber
rs-422
ConneCtor
ttl ConneCtor ttl vdC
Power suPPly
required
422TTL DB25 Female DB25 Male 5V ✔
422TTL33 DB25 Female DB25 Male 3.3V
✔
422TTL, 422TTL33_3713ds