m74hct27 STMicroelectronics, m74hct27 Datasheet - Page 4

• Manufacturer Part Number: m74hct27
• Description: Triple 3-input Nor Gate
• Manufacturer: STMicroelectronics

M54/M74HCT27
AC ELECTRICAL CHARACTERISTICS (C
(*) C
(Refer to Test Circuit). Average operting current can be obtained by the following equation. I
SWITCHING CHARACTERISTICS TEST CIRCUIT
TEST CIRCUIT I
4/9
Symbol
C
INPUT WAVEFORM IS THE SAVE AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST.
t
t
t
t
PD
C
TLH
THL
PLH
PHL
PD
IN
(*)
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
Output Transition
Time
Propagation
Delay Time
Input Capacitance
Power Dissipation
Capacitance
Parameter
CC
(Opr.)
V
(V)
4.5
4.5
CC
Test Conditions
L
= 50 pF, Input t
Min.
54HC and 74HC
T
A
Typ.
= 25
12
48
8
5
o
C
Max.
15
19
10
CC
r
(opr) = C
= t
Value
f
-40 to 85
Min.
= 6 ns)
PD
74HC
V
CC
Max.
19
24
10
o
f
C
IN
+ I
-55 to 125
CC
Min.
/3 (per Gate)
54HC
Max.
22
29
10
o
C
Unit
pF
pF
ns
ns