Search Now

Part# 3405

(Versa COMM+4/EX)

ISA 4-Port RS-232 Serial Interface

Be the first to review this product

Call For Price

Don't see what you need? Ask about a custom product.

Where to Buy | Email Sales |
Or call us at: 864.843.4343
This product is classified as legacy and is not recommended for new or high volume designs.

Sealevel will support legacy products through technical and warranty support, software drivers and product manuals. Please contact Sales for further information. For new product designs, we recommend the 7406 (PCI) or 7406e (PCI Express).

The 3405 ISA serial interface ISA bus card provides four RS-232 ports. This product features extended interrupt support, individually selectable or sharable interrupts and an onboard interrupt status port for maximum flexibility.

For user's that require custom baud rates, isochronous communications, or 9-bit protocol, the 3405 ISA serial interface is available with the Oxford 16C950 UART, part number 3405-SN.

Note: This item has a minimum order quantity (MOQ) of 25 units. Please contact your sales representative with any questions.
Host Interface(s) ISA
# of Ports 4
Electrical Interface RS-232
UART Series 550 UART
Serial Connector(s) DB25M
Communications Chip 16554
Max Data Rate 460.8K bps
Max Data Distance 50 feet
Operating Temperature 0 - +70C
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
• Flexible address selection via dip-switch
• Ten interrupt selections including (3-7, 9-12 and15)
• Supports standard PC data rates up to 460.8 Kbps
• Supports Windows, Linux, QNX, DOS and other operating systems
• Fan out cable provided - terminates in 4 DB-25M connectors

DB25 Serial Cable
DB25 Serial Cable


Terminal Block
Terminal Block


DB25F to DB9M Adapter
DB25F to DB9M Adapter


Terminal Block Kit
Terminal Block Kit


DB37F to (4) DB9M Cable
DB37F to (4) DB9M Cable


Proudly Made in the USA
© Copyright 1996 - 2017, Sealevel Systems, Inc. All rights reserved.