Datasheet > BB-232OTTL

BB-232OTTL

更新时间： 2024-10-19 22:04:15

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
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描述
OPT. ISOL. RS-232 TO TTL CONV.

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中文翻译

获取价格

数据手册

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BB-232OTTL 数据手册

Port Powered TTL /

RS-232 Converter

Model 232OTTL

www.advantech-bb.com

PRODUCT FEATURES

•

1500 Volts optical isolation

Converts 2 channels in each direction from TTL to RS-232

Baud rates up to 38.4 kbps

Powered from RS-232 data/handshake lines - no power

supply required

ORDERING INFORMATION

Model 232OTTL converts RS-232 signals to 0-5 VDC TTL levels. The 232OTTL

provides 1500V optical isolation. Two channels are used to convert from RS-232

to TTL signals and two channels are used to convert from TTL signals to RS-232.

MODEL

NUMBER

RS-232

CONNECTOR

TTL CONNECTOR TTL VDC

DB25 Male 5V

ISOLATION

232OTTL

DB25 Female

1500V

These converters support RD, TD, RTS, and CTS. The RS-232 side is a DB25P

male connector (DCE). The TTL side is a DB25S female connector. The 232OTTL

supports up to 38.4K baud.

ACCESSORIES

SMI6-12-V-P230-C1 - Power Supply, 12 VDC 6 Watt, 2.5 mm plug, International

AC input, International AC blades

It is important that only TTL logic (0 to +5V) is used for the TTL side of the

converter. The maximum sinking current for one TTL output is 8 mA. The

maximum source current for one TTL is 0.8 mA. Signal levels are inverted by the

converter in its standard conﬁguration as shown in Table 1.

232CAMS - DB25 male to DB9 female adapter cable, 15.24 cm (6.0 in.)

232SGF - 25-pin gender reverser - changes male port to female

Table 1: Standard Inverted Outputs

TTL Input

RS-232 Output

high (>2.0V)

-5 V maximum, -9V typical

low (<0.8V)

+5 V minimum, +9V typical

Operations Requiring Modiﬁcation

Model 232OTTL may be modiﬁed to non-inverted signals as shown in Table

2 by placing a jumper wire across JP1:A labeled "NI".

TTL Output RS-232 Input

high (>2.0V)

-5 V maximum, -9V typical

Table 2: Modiﬁed to Non-Inverted Outputs

low (<0.8V)

+5 V minimum, +9V typical

TTL Input

RS-232 Output

high (>2.0V)

+5 V minimum, +9V typical

Model 232OTTL has the option for non-inverted outputs - see Table 2, "Operations

Requiring Modiﬁcation" if non-inverted outputs are desired.

low (<0.8V)

+5 V maximum, -9V typical

TTL Output

RS-232 Input

Power

Model 232OTTL requires both port power on the RS-232 side, and an external

+12VDC power supply connected either through 2.5mm jack or pins 12(GND) and

25(+12VDC) on the TTL side.

high (>2.0V)

+5 V minimum, +9V typical

low (<0.8V)

-5 V maximum, -9V typical

Model 232OTTL may also be modiﬁed to accept a +5V supply on the TTL

side. Remove the 0 Ohm surface mount resister labeled R13 and place a

jumper wire across JP1:B labeled +5V. A +4.75 to +5.25V at a maximum

of 25mA is necessary to power the TTL side of the converter when this

modiﬁcation is made.

Port power is derived from the outputs of the host RS-232 port. TD, RTS, and DTR

lines may be used to port power the RS-232 side. A minimum of two of these lines

in either high or low states is required for proper operation. To externally power the

RS-232 side, connect the positive lead of the +12VDC power supply to pin 25 and

the GND lead to pin 12 of the DB25 female connector.

All product speciﬁcations are subject to change without notice.

232OTTL_3317ds

orders@advantech-bb.com

support@advantech-bb.com

Corporate Headquarters: 707 Dayton Road, PO Box 1040 Ottawa, IL 61350 USA 815-433-5100 Fax 433-5104

European Ofﬁce: Westlink Commercial Park, Oranmore Co. Galway Ireland +353 91 792444 Fax +353 91 792445

中文翻译

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