Measurement-computing PCI-COM232 Bedienungsanleitung PDF herunterladen (Seite 19)

5.0 SPECIFICATIONS

Typical for 25°C unless otherwise specified.

OWER CONSUMPTION

PCI-COM232 +5V: 220 mA typical

PCI-COM232/2 +5V: 225 mA typical

PCI-COM232/4 +5V: 230 mA typical

OMMUNICATIONS

PECIFICATIONS

UART Type 16C550 with 16 byte FIFO

Baud Rate 300 baud to 115.2 Kbaud standard mode

1200 baud to 460.8 Kbaud extended rate mode

NPUT

UTPUT SECTION

Transceiver type SP211H

Transceiver Output Characteristics

Output Voltage Range ±5V min., ±7V typ

Short Circuit Current (infinite duration) ±25 mA

Propagation Delay (TTL to RS-232) 1 µs typ.

Output Enable 400 ns typ.

Output Disable 250 ns typ.

Transceiver Input Characteristics

Input Voltage Range ±15V

Propagation Delay (RS-232 to TTL) 1.5 µs typ.

Voltage Threshold

Vil 0.8V max

Vih 2.4V min

Hysteresis 0.5V typ.

RANSIENT

OLTAGE

UPPRESION

PTION

(/S

VERSION

)

Board Description

PCI-COM232

/2/S

PCI-COM232

/4/S

Data Transceiver Input SP211H

Input Voltage Range (derated) ±12V

TVS type SMAJ12A

Working Peak Reverse Voltage ±12V

Breakdown Voltage 13.3V min., 14.7V max.

Peak Pulse Surge Current 15.1 A max. (avalanche duration time = 10 µs)

Peak Pulse Power Dissipation 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 time-

duration information, consult the SMAJ12A

datasheet.

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