tc74hc646ap TOSHIBA Semiconductor CORPORATION, tc74hc646ap Datasheet - Page 6

• Manufacturer Part Number: tc74hc646ap
• Description: Octal Bus Transceiver/register
• Manufacturer: TOSHIBA Semiconductor CORPORATION

AC Characteristics
Output transition time
Propagation delay
time
(BUS-bus)
Propagation delay
time
(CAB, CBA-bus)
Propagation delay
time
(SAB, SBA-bus)
Output enable time
( G , DIR-bus)
Output disable time
( G , DIR-bus)
Maximum clock
frequency
Input capacitance
Output capacitance
Power dissipation
capacitance
Note:
Characteristics
C
current consumption without load.
Average operating current can be obtained by the equation:
PD
I
is defined as the value of the internal equivalent capacitance which is calculated from the operating
CC
(opr) = C
Symbol
(input: t
t
t
t
t
f
C
t
t
t
t
t
t
t
t
C
C
TLH
THL
pZH
pHZ
max
pLH
pHL
pLH
pHL
pLH
pHL
pZL
pLZ
PD
PD
I/O
IN
(Note)
･V
CC
r
R
R
･f
= t
L
L
IN
= 1 kΩ
= 1 kΩ
f
+ I
= 6 ns)
CC
⎯
⎯
⎯
⎯
⎯
/8 (per bit)
Test Condition
⎯
⎯
⎯
6
(pF)
150
150
150
150
CL
50
50
50
50
50
50
50
V
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
(V)
CC
Min
31
36
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
6
Ta = 25°C
Typ.
116
102
25
74
21
18
91
26
22
98
28
24
33
28
81
23
20
98
28
24
84
24
20
29
25
60
23
20
19
67
79
13
39
7
6
5
Max
150
190
210
250
170
210
175
215
175
60
12
10
30
26
38
32
42
36
50
43
34
29
42
36
35
30
43
37
35
30
10
⎯
⎯
⎯
⎯
⎯
TC74HC646AP
Min
Ta = −40 to
25
29
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
5
85°C
2007-10-01
Max
190
240
265
315
215
265
220
270
220
75
15
13
38
32
48
41
53
45
63
54
43
37
53
45
44
37
54
46
44
37
10
⎯
⎯
⎯
⎯
⎯
MHz
Unit
pF
pF
pF
ns
ns
ns
ns
ns
ns