..................................................................... 最小4V DC，最大18V DC
TTL: 1(Hi LED) ................................................ ＞2.30.2V DC ＞3.00.25V
0 (Lo LED)................................................ ＜0.80.2V DC ＜0.750.25V
CMOS: 1(Hi LED) ................................................ ＞70% Vcc10% ＞60% Vcc5%
0 (Lo LED)................................................ ＜30% Vcc10% ＜15% Vcc5%
最小可zy}波............................