74hct670 NXP Semiconductors, 74hct670 Datasheet - Page 5

• Manufacturer Part Number: 74hct670
• Description: 4 X 4 Register File; 3-state
• Manufacturer: NXP Semiconductors

Philips Semiconductors
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
Output capability: bus driver
I
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
December 1990
CC
t
t
t
t
t
t
t
t
t
t
t
t
SYMBOL
PHL
PHL
PHL
PZH
PHZ
THL
W
su
su
h
h
latch
4 x 4 register file; 3-state
category: MSI
/ t
/ t
/ t
/ t
/ t
/ t
TLH
PLH
PLH
PLH
PZL
PLZ
propagation delay
propagation delay
propagation delay
3-state output enable time
3-state output disable time
output transition time
write enable pulse width
set-up time
set-up time
hold time
hold time
latch time
r
R
WE to Q
D
RE to Q
RE to Q
LOW
D
W
D
W
WE to R
= t
A
n
n
n
A
A
f
, R
to Q
to WE
, W
to WE
, W
= 6 ns; C
PARAMETER
B
B
B
to Q
n
n
n
to WE
to WE
A
n
, R
n
B
L
= 50 pF
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
80
16
14
60
12
10
60
12
10
5
5
5
5
5
5
100
20
17
min. typ. max. min. max. min. max.
58
21
17
77
28
22
74
27
22
39
14
11
47
17
14
14
5
4
14
5
4
3
1
1
6
2
2
0
0
0
0
0
0
28
10
8
25
195
39
33
250
50
43
250
50
43
150
30
26
150
30
26
60
12
10
5
T
amb
100
20
17
75
15
13
75
15
13
5
5
5
5
5
5
125
25
21
74HC
40 to 85
( C)
245
49
42
315
63
54
315
63
54
190
38
33
190
38
33
75
15
13
120
24
20
90
18
15
90
18
15
5
5
5
5
5
5
150
30
26
40 to 125
295
59
50
375
75
64
375
75
64
225
45
38
225
45
38
90
18
15
.
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
UNIT
74HC/HCT670
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
2.0
4.5
6.0
TEST CONDITIONS
V
(V)
Product specification
CC
Fig.6
Fig.7
Fig.7
Fig.9
Fig.9
Fig.6
Fig.8
Fig.8
Fig.8
Fig.8
Fig.8
Fig.8
WAVEFORMS