Asynchronous and Synchronous Communication
The Hostess range of multiport serial controllers includes both intelligent and non-intelligent
synchronous and asynchronous products designed to meet your needs. Widely used by many
major OEMs and System Integrators, they are simple to install and easy to use.
Hostess and Hostess 550
These were the first multiport controllers for the PC and are still in use today in a wide range of
systems. They provide a low cost asynchronous solution using non-intelligent controllers.
Features include
- Full Modem control
- Wide range of I/O addresses and interrupts
- Extensive Programmers guide
- Unique poll register
- Interface options include RS232/422, Current Loop and RS485
- FIFO buffering on the Hostess 550 to reduce number of interrupts
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Hostess i
The Hostess i range of intelligent controllers enables you to download code to the controller
to reduce the load on the computer's CPU. Available soon in PCI format.
Features include
- V.53 12 MHz processor for down loadable programs
- 128k dual ported RAM expandable to 8 Mb
- All models include two full duplex synchronous ports
- 8 and 16 port models
- Wide range of device drivers
- 1.1 Mbps synchronous, 38.4 Kbps asynchronous
- RS232/422 interface options
- Developer’s Toolkit available
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Hostess i/S2
This synchronous two port intelligent controller has the same powerful features as the
Hostess i series and is ideal for off loading system overhead by running synchronous
protocols on the controller.
Features include
- Two DB15 high density connectors on the controller
- Full modem control
- Synchronous data rates up to 2 Mbps
- Developer’s Toolkit available
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Hostess SV24+
For low cost synchronous communications the Hostess SV24+ is an economical 2
port non-intelligent controller that can operate at speeds of up to 1.28 Mpbs
and supports both full and half duplex data transfer modes.
Features include
- Single synchronous V.11, X21 network connection or two V.24 synchronous connections
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SynchLink software provides drivers for Windows NT and Windows 95 and an
API for low level control of the SV24+ communications
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Smart Hostess
The Smart Hostess can provide 4 or 8 ports that can operate either synchronously or
asynchronously giving considerable flexibility. Programs can be downloaded to the board to
reduce CPU load.
Features include
- Synchronous speeds of up to 1.1 Mbps using DMA.
- Asynchronous speeds up to 76.8 Kbps
- 8 MHz processor with 256K dual ported RAM and 256K local RAM to accommodate the down loadable programs.
- Field upgrade from 4 to 8 ports
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All Hostess controllers come with full technical support and an excellent 5 year warranty.
Specifications are subject to change at any time and without notification.
Hostess Specifications
The specifications for the range of Hostess products are outlined below.
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Conditions and Specifications-ISA
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Product
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Conditions
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Specifications
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Heat Output
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Mean time between failures
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I/O ports/ expansion slot
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Interfaces
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Interrupt
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Hostess - 4 port
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4.9w
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38.6 years
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4
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RS 232/ 422/ 485/ Current loop
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2, 3, 4, 5, 10 & 11
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Hostess - 8 port
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8.8w
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18.3 years
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8
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RS 232/ 422/ 485/ Current loop
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2, 3, 4, 5, 10 & 11
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Hostess 550 - 4 port
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6.8w
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38.6 years
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4
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RS 232/ 422/ 485/ Current loop
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2, 3, 4, 5, 10 & 11
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Hostess 550 - 8 port
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10.8w
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18.3 years
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8
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RS 232/ 422/ 485/ Current
loop
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2, 3, 4, 5, 10 & 11
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Hostess 550 - 16 port
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7.3w
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8.3 years
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16
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RS 232/ 422
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2, 3, 4, 5, 10, 11 & 12
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Hostess 550 Quadcable
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2.94w
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28.0 years
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4
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RS 232
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5, 7, 10 , 11 & 12
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Hostess 550 Octacable
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4.81w
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20.6 years.
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8
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RS 232
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5, 7, 10 , 11 & 12
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Hostess i - 8 port
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12.34w
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8
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RS 232/ 422
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3-5, 9-12 & 15
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Hostess i - 16 port
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16.13w
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16
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RS 232/ 422/ 485
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3-5, 9-12 & 15
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Smart Hostess - 8 port
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16.5w
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8.4 years
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8
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RS 232/ 422/ 485/ Current
loop
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2-7, 9-12, 14 & 15
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Conditions and Specifications-ISA
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Product
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Control by device driver
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Current consumption
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Baud Rate (RS-232)
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Buad Rate (RS-422)
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Baud rate (RS-485)
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+5VDC
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+12VDC
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-12VDC
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Hostess - 4 port
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50 to 115.2 KB
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50 to 115.2 KB
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50 to 115.2KB
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720mA
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54mA
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60mA
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Hostess - 8 port
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50 to 115.2 KB
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50 to 115.2 KB
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50 to 115.2KB
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1.2A
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112mA
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130mA
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Hostess 550 - 4 port
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50 to 115.2 KB
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50 to 115.2 KB
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50 to 115.2 KB
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1.1A
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54mA
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60mA
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Hostess 550 - 8 port
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50 to 115.2 KB
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50 to 115.2 KB
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50 to 115.2 KB
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1.6A
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112mA
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130mA
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Hostess 550 - 16 port
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50 to 115.2 KB
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50 to 115.2 KB
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1.2A
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60mA
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50mA
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Hostess 550 Quadcable
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50 to 115.2 KB
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260mA
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50mA
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90mA.
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Hostess 550 Octacable
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50 to 115.2 KB
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300mA
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100mA
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180mA
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Hostess i - 8 port
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50 to 38.4 KB
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50 to 38.4 KB
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1.740A
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0.004A
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0.066A
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Hostess i - 16 port
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50 to 38.4 KB
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50 to 38.4 KB
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50 to 38.4 KB
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2.540A
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0.005A
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0.220A
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Smart Hostess - 8 port
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50 to 76.8 KB
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50 to 76.8 KB
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50 to 76.8 KB
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2.73A
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142mA
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105mA
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Interfaces
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4 port
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RS232, DB9 male
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RS232/422, DB25 female
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RS232/422, DB25 male
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RS422/485, DB9 female
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8 port
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RS232, DB9 male
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RS232/422, DB25 female
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RS232/422, DB25 male
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RS422/485, DB9 female
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16 port
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DB25 female
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Specifications Common to all asynchronous Hostess products
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Product
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Air Temperature
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Humidity (non- condensing)
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Altitude
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Control
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No. of cards
per PC
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System on
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System off
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System on
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System off
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Data bits
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Stop bits
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Hostess - 4 port
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0 to 70°C
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-65 to 150°C
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8% to 80%
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20% to 80%
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0 - 3048 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4
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Hostess - 8 port
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0 to 70°C
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-65 to 150°C
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8% to 80%
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20% to 80%
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0 - 3048 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4
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Hostess 550 - 4 port
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0 to 70°C
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-65 to 150°C
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8% to 80%
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20% to 80%
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0 - 3048 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4
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Hostess 550 - 8 port
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0 to 70°C
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-65 to 150°C
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8% to 80%
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20% to 80%
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0 - 3048 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4
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Hostess 550 - 16 port
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0 to 70°C
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-65 to 150°C
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8% to 80%
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20% to 80%
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0 - 3048 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4
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Hostess 550 Quadcable
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0 to 70°C
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-65 to 150°C
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8% to 80%
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20% to 80%
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0 - 3048 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4
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Hostess 550 Octacable
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0 to 70°C
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-65 to 150°C
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8% to 80%
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20% to 80%
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0 - 3048 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4
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Hostess i - 8 port
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0 to 40°C
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-20 to 85°C
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8% to 80%
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20% to 80%
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0 - 3000 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4
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Hostess i - 16 port
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0 to 40°C
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-20 to 85°C
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8% to 80%
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20% to 80%
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0 - 3000 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4
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Smart Hostess - 8 port
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0 to 70°C
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-65 to 125°C
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8% to 80%
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20% to 80%
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0 - 3048 metres
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5, 6, 7 or 8
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1, 1.5 or 2
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4<
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All Hostess products are UL-listed, have FCC Class A & CE Class A Certification.
 Hostess Intelligent Serial Multiport Cards
Hostess NonIntelligent Serial Multiport Cards
Hostess Interfaces for Serial Multiport Cards
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