M74HC688 STMICROELECTRONICS [STMicroelectronics], M74HC688 Datasheet - Page 5

• Manufacturer Part Number: M74HC688
• Description: 8 BIT EQUALITY COMPARATOR
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

AC ELECTRICAL CHARACTERISTICS (C
(*) C
(Refer to Test Circuit). Average operting current can be obtained by the following equation. I
SWITCHING CHARACTERISTICS TEST
WAVEFORM
Symbol
C
t
t
t
t
t
t
PD
C
TLH
THL
PLH
PHL
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
(Pn, Qn - P = Q)
Propagation
Delay Time
(G - P = Q)
Input Capacitance
Power Dissipation
Capacitance
Parameter
V
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
CC
Test Conditions
L
= 50 pF, Input t
Min.
54HC and 74HC
T
TEST CIRCUIT ICC (Opr.)
A
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF
SWITCHING CHARACTERISTICS TEST.
Typ.
= 25
30
60
21
17
40
13
10
32
8
7
5
o
C
Max.
170
110
75
15
13
34
29
22
19
10
CC
r
(opr) = C
= t
Value
f
-40 to 85
Min.
= 6 ns)
PD
74HC
V
CC
Max.
215
140
95
19
16
43
37
28
24
10
o
f
C
IN
+ I
-55 to 125
CC
Min.
M54/M74HC688
54HC
Max.
110
255
165
22
19
51
43
33
28
10
o
C
Unit
pF
pF
ns
ns
ns
5/10