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74HC670N,652 PDF预览

74HC670N,652

更新时间: 2024-01-01 01:57:07
品牌 Logo 应用领域
恩智浦 - NXP 静态存储器光电二极管
页数 文件大小 规格书
9页 77K
描述
4X4 STANDARD SRAM, 59ns, PDIP16

74HC670N,652 数据手册

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Philips Semiconductors  
Product specification  
4 x 4 register file; 3-state  
DC CHARACTERISTICS FOR 74HC  
74HC/HCT670  
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.  
Output capability: bus driver  
I
CC category: MSI  
AC CHARACTERISTICS FOR 74HC  
GND = 0 V; tr = tf = 6 ns; CL = 50 pF  
Tamb (°C)  
TEST CONDITIONS  
74HC  
SYMBOL  
PARAMETER  
UNIT  
VCC  
(V)  
+25  
40 to +85 40 to+125  
WAVEFORMS  
min. typ. max. min. max. min. max.  
t
PHL/ tPLH propagation delay  
58  
21  
17  
195  
39  
33  
245  
49  
42  
295  
59  
50  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
2.0 Fig.6  
4.5  
6.0  
RA, RB to Qn  
tPHL/ tPLH propagation delay  
WE to Qn  
77  
28  
22  
250  
50  
43  
315  
63  
54  
375  
75  
64  
2.0 Fig.7  
4.5  
6.0  
t
PHL/ tPLH propagation delay  
Dn to Qn  
74  
27  
22  
250  
50  
43  
315  
63  
54  
375  
75  
64  
2.0 Fig.7  
4.5  
6.0  
tPZH/ tPZL 3-state output enable time  
RE to Qn  
39  
14  
11  
150  
30  
26  
190  
38  
33  
225  
45  
38  
2.0 Fig.9  
4.5  
6.0  
t
t
PHZ/ tPLZ 3-state output disable time  
RE to Qn  
47  
17  
14  
150  
30  
26  
190  
38  
33  
225  
45  
38  
2.0 Fig.9  
4.5  
6.0  
THL/ tTLH output transition time  
14  
5
4
60  
12  
10  
75  
15  
13  
90  
18  
15  
2.0 Fig.6  
4.5  
6.0  
tW  
tsu  
tsu  
th  
write enable pulse width  
LOW  
80  
16  
14  
14  
5
4
100  
20  
17  
120  
24  
20  
2.0 Fig.8  
4.5  
6.0  
set-up time  
Dn to WE  
60  
12  
10  
3
1
1
75  
15  
13  
90  
18  
15  
2.0 Fig.8  
4.5  
6.0  
set-up time  
WA, WB to WE  
60  
12  
10  
6
2
2
75  
15  
13  
90  
18  
15  
2.0 Fig.8  
4.5  
6.0  
hold time  
Dn to WE  
5
5
5
0
0
0
5
5
5
5
5
5
2.0 Fig.8  
4.5  
6.0  
th  
hold time  
WA, WB to WE  
5
5
5
0
0
0
5
5
5
5
5
5
2.0 Fig.8  
4.5  
6.0  
tlatch  
latch time  
WE to RA, RB  
100 28  
125  
25  
21  
150  
30  
26  
2.0 Fig.8  
4.5  
6.0  
20  
17  
10  
8
December 1990  
5

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