PCI-COM232 (Series)
SPECIFICATIONS
PCI-COM232 Series
PCI-to-RS-232 Interface
Revision 2, October, 2000
© Copyright 2000, MEASUREMENT COMPUTING CORPORATION
Typical for 25°C unless otherwise specified.
POWER CONSUMPTION
PCI-COM232
PCI-COM232/2
PCI-COM232/4
COMMUNICATIONS SPECIFICATIONS
UART Type
Baud Rate
INPUT/OUTPUT SECTION
Transceiver type
Transceiver Output Characteristics
Output Voltage Range
Short Circuit Current (infinite duration)
Propagation Delay (TTL to RS-232)
Output Enable
Output Disable
Transceiver Input Characteristics
Input Voltage Range
Propagation Delay (RS-232 to TTL)
Voltage Threshold
Vil
Vih
Hysteresis
+5V: 220 mA typical
+5V: 225 mA typical
+5V: 230 mA typical
16C550 with 16 byte FIFO
300 baud to 115.2 Kbaud standard mode
1200 baud to 460.8 Kbaud extended rate mode
SP211H
±5V min., ±7V typ
±25 mA
1 µs typ.
400 ns typ.
250 ns typ.
±15V
1.5 µs typ.
0.8V max
2.4V min
0.5V typ.
TRANSIENT VOLTAGE SUPPRESION OPTION (/S VERSION)
Board Description
PCI-COM232/S
PCI-COM232/2/S
PCI-COM232/4/S
Data Transceiver Input
Input Voltage Range (derated)
SP211H
±12V
TVS type
Working Peak Reverse Voltage
Breakdown Voltage
Peak Pulse Surge Current
Peak Pulse Power Dissipation
SMAJ12A
±12V
13.3V min., 14.7V max.
15.1 A max. (avalanche duration time = 10 µs)
300W max. (avalanche duration time = 10 µs)
Peak Pulse Power Dissipation is proportional to the
amount of time the TVS remains in the avalanche
mode. For specific power vs. avalanche timeduration information, consult the SMAJ12A
datasheet.
ENVIRONMENTAL
Operating temperature range
Storage temperature range
Humidity
0 to 70°C
−40 to 100°C
0 to 90% non-condensing
Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766
(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com
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