Delta ASD-A2-0121 Series User Manual page 338

ASDA-A2
Logic
0
Logic
0
For digital circuit, it uses 0 and 1 to represent two status, which is high voltage and
low voltage. In Positive Logic, 1 represents high voltage and 0 represents low voltage
and vice versa in Negative Logic.
For example:
Positive Logic
Negative Logic
Pulse Specification
High-speed
pulse
Low-speed
pulse
Pulse
Type
HSign = high
(38)
Pulse +
HPulse
(29)
Symbol
T4
(46)
HSign
(40)
Pulse
Type
Pulse +
(43)
Pulse
Symbol
(41)
T4
(36)
Sign
(37)
Max. Input
Frequency
Differential
4 Mpps
Signal
Differential
500 Kpps
Signal
Open-
200 Kpps
collector
High-speed Pulse Input
Forward
TH
T5 T6 T5 T6 T5 T4
Low-speed Pulse Input
Forward
Sign = low
TH
T5 T6 T5 T6 T5 T4
T1 T2
62.5ns 125ns
0.5μs 1μs
1.25μs 2.5μs
Chapter 8 Parameters
Reverse
HSign = low
(38)
HPulse
(29)
T4 T5 T6 T5 T6
(46)
HSign
(40)
Reverse
Sign = high
(43)
Pulse
(41)
T4 T5 T6 T5 T6
(36)
Sign
(37)
Minimum time width
T3 T4
250ns 200ns 125ns
2μs 2μs 1μs
5μs 5μs 2.5μs
TH
T5 T4
TH
T5 T4
T5 T6
125ns
1μs
2.5μs
8-39