ADLINK Technology ACL-7130, Руководство пользователя, Страница: 10 / 41

4
•
Introduction
•
Isolation Voltage : 2,500 VDC
•
Max. Throughput : 10KHz
♦
Non-isolated Digital Input
•
Input logic low voltage
:
Min. -0.5V; Max. 0.8V
•
Input logic high voltage
:
Min. 2.0V; Max. 5.0V
•
Input loading current
:
Max. 0.2 mA at 0.4V
•
Input hysteresis
:
Typical 0.4V; Min. 0.2V
•
Max. Throughput : 30KHz
♦
Non-isolated Digital Output
•
Input logic low voltage (Sink)
:
Max. 0.5V at 24mA;
•
Input logic high voltage (Source)
:
Max. 0.4V at 12mA
•
Driving Capacity
:
All inputs and outputs are TTL/DTL compatible
and outputs will drive 1 standard TTL load (74
series) or 4 LSTTL (74LS) loads
•
Input hysteresis : Typical 0.4V; Min. 0.2V
♦
Programmable Counter :
•
Chips
:
8254
•
Frequency
:
2MHz
•
Counter : three 16-bit counters ( counter0 ~ counter 2)
•
Mode : 6 programmable modes
•
Usable pins
:
CLK and GATE for counter 0 (JP5)
•
counter usage
: counter 0 is flexible for users counter 1 and
counter 2 are cascaded together for timer pacer
generation.