IN74HCT27A
AC ELECTRICAL CHARACTERISTICS (CL=50pF,Input tr=tf=6.0 ns)
VCC
V
Guaranteed Limit
Symbol
Parameter
25 °C to £85°C
-55°C
£125°C
Unit
tPHL, tPLH Maximum Propagation Delay (Figure 1)
4.5
4.5
24
15
31
19
37
22
ns
ns
tTHL, tTLH Maximum Output Transition Time
(Figure 1)
CIN
Maximum Input Capacitance
5.0
10
10
10
pF
Power Dissipation Capacitance (Per Gate)
TA=25°C,VCC=5.0 V
CPD
Used to determine the no-load dynamic power
consumption:
54
pF
PD=CPDVCC2f+ICCVCC
t
tr
f
V1
0.9
0.9
V2
V2
Input
GND
0.1
0.1
tPHL
tPLH
VCC
0.9
0.9
V2
0.1
V2
Output
0 V
0.1
tTHL
tTLH
V1 = 3 V
V2 = 1.3 V
Figure 1. Switching Waveforms
VCC
VI
VO
Termination resistance RT – should
be equal to ZOUT of pulse
generators
DEVICE
UNDER
TEST
PULSE
GENERATOR
RT
CL
50 pF
Figure 2. Test Circuit
INTEGRAL
4
INTEGRAL [ INTEGRAL CORP. ]
