MC54/74HC14A
AC CHARACTERISTICS
(CL = 50pF, Input tr = tf = 6ns)
Symbol
tPLH,
tPHL
Parameter
Maximum Propagation Delay, Input A or B to Output Y
(Figures 1 and 2)
VCC
V
2.0
3.0
4.5
6.0
2.0
3.0
4.5
6.0
Guaranteed Limit
–55 to 25°C
75
30
15
13
75
27
15
13
10
≤85°C
95
40
19
16
95
32
19
16
10
≤125°C
110
55
22
19
110
36
22
19
10
Unit
ns
tTLH,
tTHL
Maximum Output Transition Time, Any Output
(Figures 1 and 2)
ns
Cin
Maximum Input Capacitance
pF
NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the Motorola High–
Speed CMOS Data Book (DL129/D).
Typical @ 25°C, VCC = 5.0 V
CPD
Power Dissipation Capacitance (Per Inverter)*
22
pF
* Used to determine the no–load dynamic power consumption: PD = CPD VCC 2 f + ICC VCC . For load considerations, see Chapter 2 of the
Motorola High–Speed CMOS Data Book (DL129/D).
tf
90%
50%
10%
tPLH
90%
OUTPUT Y
50%
10%
tTLH
tr
VCC
INPUT A
GND
tPHL
tTHL
Figure 1. Switching Waveforms
TEST
POINT
OUTPUT
DEVICE
UNDER
TEST
CL*
*Includes all probe and jig capacitance
Figure 2. Test Circuit
MOTOROLA
4
High–Speed CMOS Logic Data
DL129 — Rev 6
MOTOROLA [ MOTOROLA, INC ]
