74HC Philips, 74HC Datasheet - Page 9

• Manufacturer Part Number: 74HC
• Description: HCMOS family characteristics
• Manufacturer: Philips

Philips Semiconductors
HCU TYPES
AC waveforms 74HCU
Test circuit for 74HCU
March 1988
HCMOS family characteristics
C
R
L
T
=
=
Fig.1 Input rise and fall times, transition times and propagation delays for combinatorial logic ICs.
load capacitance including jig and probe capacitance
(see AC CHARACTERISTICS for values).
termination resistance should be equal to the output impedance Z
the pulse generator.
handbook, halfpage
handbook, halfpage
GENERATOR
INPUT
OUTPUT
PULSE
t PHL
t THL
10%
90%
Fig.2 Test circuit.
V I
t r
50%
90%
50%
10%
R T
9
o
D.U.T
V CC
of
t f
t PLH
t TLH
V O
C L
MGK564
FAMILY SPECIFICATIONS
V CC
GND
MGK565
50 pF