HD74HCT1G04
Rev.5.00, Jan.28.2004, page 5 of 7
Switching Characteristics
Ta = 25°C
Item Symbol Min Typ Max Unit Test Conditions
Output rise / fall time tTLH
tTHL
— 6 10 ns Test circuit
tPLH —7.512Propagation delay time
tPHL —1017
ns Test circuit
(CL = 15 pF, tr = tf = 6 ns, VCC = 5 V)
Ta = 25°C Ta = –40 to 85°C
Item Symbol
VCC
(V) Min Typ Max Min Max Unit Test Conditions
Output rise / fall time tTLH
tTHL
4.5 — 14 25 — 31 ns Test circuit
tPLH 4.5 — 11.2 16 — 20Propagation delay time
tPHL 4.5 — 16.4 27 — 31
ns Test circuit
Input capacitance CIN ——2.55 — 5 pF
Equivalent capacitance CPD ——10—— — pF
(CL = 50 pF, tr = tf = 6 ns)
Note: CPD is equivalent capacitance inside of the IC calculated from the operating current without load (see
test circuit). The average operating current without load is calculated according to the expression
below.
ICC (opr) = CPD • VCC • fIN + ICC