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Features |
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USB 2.0
version of Quatech's reliable Embedded USB Serial Adapters
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1, 4 or 8
independent ports |
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USB to
RS-232 or USB RS-232/422/485 (MEI) available
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On 400
models, each port configurable for RS-232, RS-422 or RS-485
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Device
enumerates itself as standard port(s)
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Full
modem control and hardware and software flow control (RS-232) |
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Full-duplex or half-duplex modes (RS-232/422/485)
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Bus
powered, no external power required
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Windows
2000/XP/Vista and Linux support available
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Surge
suppression standard |
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RoHS
compliant |
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External
USB Serial Adapters also available
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Board Layout:
SSU2 QSU2
ESU2
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Specifications |
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RS-232
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RS-232/422/485
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Bus Interface |
High Speed USB 2.0
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Support |
Windows 2000/XP/Vista and Linux support
available
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Windows 2000/XP/Vista and Linux support
available
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Serial Ports Provided |
SSU:1 QSU:4 ESU:8 |
QSU:4 ESU:8 |
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Each port configurable as RS-422 or RS-485 for
full or half duplex communication |
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USB Ports Required |
SSU:1 QSU:1 ESU:1 |
QSU:1 ESU:1 |
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Data Rate |
up to 921.6 kbps
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UARTs |
1024-byte transmit and receive FIFOs
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Transceiver |
SP211HB |
MAX491 or compatible |
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RS-232 Output |
Voltage Swing: ±5V (min), ±7V (typ) |
N/A |
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RS-232 Input |
Voltage Range: -15V (min), +15V (max) |
N/A |
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Input Threshold Low: 0.8V (min), 1.2V (typ) |
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Input Threshold High: 2.4V (max), 1.7V (typ) |
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Differential Driver Output (50W Load) |
N/A |
+3.3V (max) |
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Differential Driver Output (27W Load) |
N/A |
+1.5V (min), +3.3V (max) |
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High Input |
N/A |
+2V (min) |
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Low Input |
N/A |
+0.8V (max) |
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Driver Rise/Fall Time |
N/A |
5ns (typ), 20ns (max) |
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Driver Input to Output Delay |
N/A |
20 ns (min), 40 ns (typ), 60 ns (max) |
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Receiver Input to Output Delay |
N/A |
40 ns (min), 70 ns (typ), 100 ns (max) |
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Environment |
Operating: 0°C to 70°C
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Storage: -50°C to 80°C
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Humidity: 10% to 90%
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IND Option |
Surge suppressor applied to each line that is capable of
sustaining up to 40A peak, 8 x 20µs transient surges, a clamping
voltage of 30V and a peak energy dissipation of 0.1 Joules.
(NOTE: The "IND" option limits data rate to 115.2 kbps) |
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Power Requirements |
Bus-powered device, no external power supply
required.
Suspend power: < 500 µA
Unconfigured power: < 100 mA
Configured Power: < 500 ma
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Size |
SSU2:
0.56” H x 3.87” W x 1.40 ” D
QSU2:
0.72” H x 6.52 ” W x 5.20 ” D
ESU2:
1.31” H x 6.52” W x 5.20 ” D |
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Connectors |
DB-9 male (see connector pinout) |
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Certifications |
CE, FCC Class B, RoHS & WEEE Compliant |
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Ordering Information |
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SSU2-100-EMB |
1 port
embedded USB 2.0 to RS-232 serial adapter, surge suppression
standard |
Ordering Information |
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QSU2-100-EMB |
4 port embedded USB 2.0 to
RS-232 serial adapter, surge suppression standard |
Ordering Information |
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QSU2-400-EMB |
4 port embedded USB 2.0 to
RS-232/422/485 serial adapter, surge suppression standard |
Ordering Information |
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ESU2-100-EMB |
8 port embedded USB 2.0 to
RS-232 serial adapter, surge suppression standard |
Ordering Information |
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ESU2-400-EMB |
8 port embedded USB 2.0 to
RS-232/422/485 serial adapter, surge suppression standard |
Ordering Information |
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