CyberResearch COML 2232F User Manual

Page 13

4.2 ELECTRICAL

All figures quoted are typical parameters @ 25°C (77°F)

RS-232 SIGNALS:

Typical output level ±5.5V (open circuit voltages)
TX, RX, CTS and RTS are supported on each port

UART CLOCK SPEED:

1.8432MHz, max baud rate 115.2K bps

ISOLATION:

Isolation is defined between ISOGND and host 0V supply (metal
case of card and cable shield braid) and can be up to +/-50V, DC
to 60Hz. The two ports share a common ground (ISOGND): no
isolation exists between the two ports

SCAVENGED POWER:

The isolation driver circuit will only supply enough power to
guarantee correct RS-232 signal operation into 3K-ohm loads on
TX and RTS. Using terminal equipment that scavenges power
from the RS-232 signals may not work

UNUSED SIGNALS:

If RX or CTS inputs are not used, make sure they are looped
back into TX and RTS respectively to prevent them from
floating

4.3 POWER CONSUMPTION

All figures quoted are typical parameters @ 25°C (77°F)

VCC CURRENT:

35mA typical @ 3.3V

4.4 MECHANICAL

MASS:

15g

typical

(0.352

oz.)

FORM FACTOR:

36.4mm x 42.8mm x 5.0 mm overall (1.43” x 1.68” x 0.13”)

4.5 ENVIRONMENTAL

HUMIDITY:

<80%

R.H.

(non-condensing)

TEMP: 0-50°C

ambient

(32-122°F)

CyberResearch

Serial Communications

COML 2232F

CyberResearch, Inc.

25 Business Park Drive

P: (203) 483-8815; F: (203) 483-9024

Branford, CT USA