5. Specifications
Bus interface: Industry Standard Architecture (ISA)
16-bit bus
IBM PC-AT
TM
compatible
Dimensions: 6.65" x 3.7"
Serial ports
Controller: 16550 (16750 optional)
Interface: One female D-37 connector
Four male D-25 connectors
using adapter cable
Transmit drivers: MC1488 or compatible
High level output: +9V min, +10.5V max
Low level output: -9V min, -10.5V max
Switching speed: 55ns typ, 100ns max
Receive buffers: MC1489 or compatible
High level input: +3V to +13V
Low level input: -3V to -13V
Switching speed: 120ns typ, 175ns max
I/O Address range: 0000H - FFFFH
Interrupt levels: IRQ2 to IRQ7
IRQ10 to IRQ12,
IRQ14, IRQ15
Power requirements
+5 volts: 382 mA typ, 438 mA max
+12 volts: 57 mA typ, 67 mA max
-12 volts: 54 mA typ, 63 mA max
QS-100D User's Manual 5-1