6
RS-232↔485/422 CONVERTERS
1. Specifications
Optical Isolation: IC109A, IC109AE, IC109C only
Interface: (1) asynchronous RS-232 port (DTE/DCE selectable); (1) asynchronous
RS-485 port with improved surge protection and switch-selectable line termination
or line bias
Connectors: (1) DB25 female RS-232 port; (1) four-wire terminal block (TB1)
RS-485 port
Pins Supported: RS-232 port: TD, RD, RTS, CTS, CD, DTR, DSR, SG, and FG;
RS-485 port: TXA, TXB, RXA, RXB
Data Rate: Up to 115 kbps, transparent to data
Indicators: (5) LEDs: TX, RX, RTS, CD, and PWR
Temperature Tolerance: Operating: 32 to 122°F (0 to 50°C); Storage: -4 to +158°F
(-20 to +70°C)
Humidity: 0 to 95% relative humidity, noncondensing
MTBF: Approximately 180,000 hours (ground benign environment)
Power: PS154 (for use with IC108A, IC109A): Input: 120 V, 60 Hz, 20W; Output: AC
17VCT, 0.7A; PS154E (for use with IC108AE, IC109AE): Input: 230 V, 50 Hz, 20W;
Output: AC 17VCT, 750 mA
Size: Standalone Unit: 1.8"H x 5.5"W x 8.5"D (4.6 x 14 x 21.6 cm);
Rackmount Card: 7.4"L x 4.7"W (18.8 x 11.9 cm); 0.6 inches thick (1.6 cm)
Weight: Standalone Unit: 1 lb. (0.5 kg); Power supply only: PS154: 0.4 lb. (0.2 kg),
PS154E: 1.1 lb. (0.5 kg)
Operation: Point to Point or Multipoint; Half or Full Duplex; Transparent to data;
Selectable RTS-to-CTS delay with option to inhibit CTS if CD is present (DCE);
DTE or DCE configurable RS-232 port; Normal or loopback operation
Timeout Delay: 0.15, 0.7, 2, 7, or 70 msec (for the RS-485 driver enabled by data
feature)
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