Technical data
APCI-1648/APCI-1696
12
TTL inputs and outputs
NOTICE!
The TTL inputs and outputs are not optically isolated.
Please make sure that no signal from the peripherals is
connected to the inputs and outputs when the PC system is
switched off or being booted up or shut down. This can be
realised by means of a relay or tri-state circuit between the
peripherals and the TTL inputs and outputs.
APCI-1648:
.............................................. 48 TTL inputs and outputs,
6 independent modules with
each 8 TTL input/output channels
APCI-1696:
.............................................. 96 TTL inputs and outputs,
12 independent modules with
each 8 TTL input/output channels
I/O address range: ..................................... 128 bytes
Access: ...................................................... 8-bit, 32-bit
Programming: ........................................... through I/O read or write commands
Driver type: ............................................... 74ALVC164245
Min. output voltage: ................................. 3.84 V (High level)
Max. output voltage: ................................. 0.1 V (Low level)
TTL input compatible: ............................... 0.8 V (max. Low level)
................................................................... 2 V (min. High level)
Max. output load: ...................................... 20 LSTTL loads
Max. output current: ................................. DC ± 50 mA
Signal delay: ............................................. 15 ns
Max. DC input signal: ............................... 4.75 V
(PC supply voltage = 5 V ± 5%)
Min. DC output signal: .............................. 3.8 V
(PC supply voltage
≥
4.75 V)
