4-240
FAST AND LS TTL DATA
MC74F640
A0
A1
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
19
1
OE
T/R
VCC = PIN 20
GND = PIN 10
LOGIC DIAGRAM
AC ELECTRICAL CHARACTERISTICS
Symbol
Parameter
74F
74F
Unit
TA = +25
°
C
VCC = +5.0 V
CL = 50 pF
RL = 500
Typ
TA = 0
°
C to +70
°
C
VCC = +5.0 V
±
10%
CL = 50 pF
RL = 500
Typ
Min
Max
Min
Max
tPLH
tPHL
Propagation Delay
An to Bn, Bn to An
2.0
1.0
7.0
5.0
2.0
1.0
8.0
5.5
ns
tPZH
tPZL
Output Enable Time
to High or Low Level
3.5
6.0
11
11
3.5
6.0
13
12
ns
tPHZ
tPLZ
Output Disable Time
to High or Low Level
1.5
1.0
8.0
7.0
1.5
1.0
9.0
7.5
ns