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IL25%IRED1ILVce=5VVce=0.4V42V1–SN7414IIN–SN741434TTL0.4V(Vce)TTL1.6mA(IGATE)4TTL1231k,TTLR3TTLQ1R3R3Q1HFEIL12345R1R1IRED6TTLHOA1874-114HOA1874-11IL=3mAIF=20mAVCE=5VVF=1.6V.IF=20mAQ12N2222(HFE=60min)Vcc=5.0VR3R4123R245R165mA
