Equivalent I/O circuit
VCCT
TTL-IN
6k
6k
300
VCCG
VEET
VEEG
(a) TTL input equivalent circuit
CXB1451Q
VCCT
3k
TTL-OUT
VEET
(b) TTL output equivalent circuit
VCCA
LPFA
LPFB
VEEA
(c) LPFA/B equivalent circuit
VCCE
SDATAP
SDATAN
VEEE
(d) SDATAP/N equivalent circuit
VCCA
VCCG
VCCT
VCCG
TESTDT
TESTSB
VEEA
(e) TESTDT equivalent circuit
VEEG
VEET
(f) TESTSB equivalent circuit
VEEG
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