BB-422TTL TTL to RS-422 Converter Features Convert 2 channels in each direction from TTL (Transistor Transistor Logic) to RS-422 5V TTL Baud rates up to 115.2 kbps Quick, inline installation Open pads to change pin configuration Power supply required (sold separately) Introduction Ordering Information Model BB-422TTL converts RS-422 or EIA-530 signals to 5V TTL at data rates up to 115.2 RS-422 TTL Power Supply kbps. Two channels are used to convert RS-422 to TTL and two channels are used to Model No. TTL Vdc Connector Connector Required convert TTL to RS-422. BB-422TTL DB25 Female DB25 Male DB25 Female Yes 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 converter supports RD, TD, RTS, and CTS. Pin 7 is Signal Ground for both connectors. The converter supports baud rates up to 115.2 kbps. Open pads are provided for each line. Accessories Sold Separately If desired, you can change the pin connectors for any of the 4 channels. When converting BB-SMI6B12V-P230C1 Power Supply, 12 Vdc 6 W, 2.5mm plug, International AC Input, a second RS-422 channel, use the corresponding RTS A and RTS B pins (refer to the Quick International AC Blades (NATAM, EU, UK, Australia, China) Start Guide). BB-232AMF5 - Serial Cable, DB25M to DB25F, 1.8 meters The converter inverts the TTL signal. Refer to the specifications table to determine polarity. An external +12 Vdc power supply is required (not included, sold separately). Pinouts Mechanical Diagram Units - cm/in BB-USOPTL4-2P BB-USOPTL4-4P 0221ds All product specifications are subject to change without notice. BB-422TTL 1821dsBB-422TTL Specifications Serial Technology Mechanical Data Rate Up to 115.2 Kbps baud Dimensions 5.4 x 5.1 x 1.6 cm (2.1 x 2.02 x 0.62 in) RS-422 Connector DB25 female Meantime Between Failures (MTBF) RS-422 Signals TDA(-), TDB(+), RDA(-), RDB(+), RTS A(-), RTS B(+), CTS A(-), MTBF 1539882 hours (EIA-530 pinout) CTS B(+) Calculation MIL 217F using Parts Count Reliability Prediction TTL Connector DB25 male Method TTL Signals TD, RD, RTS, CTS Environmental Vdc Level 5 V Operating 0 to +70 C (+32 to +158 F) Temperature Polarity Storage TTL Input V(A) - V(B) -40 to +85 C (-40 to +185 F) Temperature High Negative Regulatory Approvals / Standards / Directives Low Positive FCC, Part 15 TTL Output RS-422 / EIA-530 Input 2014/30/EU Electromagnetic Compatibility (EMC) High Negative 2011/65/EU Amended by (EU) 2015/863 Reduction of CE - Directives Hazardous Substances (RoHS) Low Positive 2012/19/EU Waste Electrical and Electronic Equipment (WEEE) Power EN 55032: Class B Electromagnetic Compatibility of Multimedia Source External, 2.5 mm positive tip (Not included, sold separate.) Equipment Emission Requirements CE - Standards Input Voltage 12 Vdc (<100 mA) EN 55024 Information Technology Equipment Immunity Characteristics Output Voltage Limits and Methods of Measurement Logic: -0.5V to (VCC+0.5V), maximum (transceiver) Schematic