參數(shù)資料
型號: HEF4508BP
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: Dual 4-bit latch
中文描述: 4000/14000/40000 SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDIP24
封裝: PLASTIC, SOT-101-1, DIP-24
文件頁數(shù): 5/9頁
文件大?。?/td> 107K
代理商: HEF4508BP
January 1995
5
Philips Semiconductors
Product specification
Dual 4-bit latch
HEF4508B
MSI
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
= 25
°
C; C
L
= 50 pF; input transition times
20 ns; see also waveforms Fig.4.
V
DD
V
SYMBOL
MIN.
TYP.
MAX.
TYPICAL EXTRAPOLATION
FORMULA
Propagation delays
ST
O
n
HIGH to LOW
5
115
50
35
115
50
35
95
40
30
95
40
30
100
40
30
60
30
20
60
30
20
230
100
70
230
100
70
190
80
60
190
80
60
200
80
60
120
60
40
120
60
40
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
88 ns
+
(0,55 ns/pF) C
L
39 ns
+
(0,23 ns/pF) C
L
27 ns
+
(0,16 ns/pF) C
L
88 ns
+
(0,55 ns/pF) C
L
39 ns
+
(0,23 ns/pF) C
L
27 ns
+
(0,16 ns/pF) C
L
68 ns
+
(0,55 ns/pF) C
L
29 ns
+
(0,23 ns/pF) C
L
22 ns
+
(0,16 ns/pF) C
L
68 ns
+
(0,55 ns/pF) C
L
29 ns
+
(0,23 ns/pF) C
L
22 ns
+
(0,16 ns/pF) C
L
73 ns
+
(0,55 ns/pF) C
L
29 ns
+
(0,23 ns/pF) C
L
22 ns
+
(0,16 ns/pF) C
L
10 ns
+
(1,0 ns/pF) C
L
9 ns
+
(0,42 ns/pF) C
L
6 ns
+
(0,28 ns/pF) C
L
10 ns
+
(1,0 ns/pF) C
L
9 ns
+
(0,42 ns/pF) C
L
6 ns
+
(0,28 ns/pF) C
L
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
5
10
15
t
PHL
LOW to HIGH
t
PLH
D
n
O
n
HIGH to LOW
t
PHL
LOW to HIGH
t
PLH
MR
O
n
HIGH to LOW
t
PHL
Output transition times
HIGH to LOW
t
THL
LOW to HIGH
t
TLH
3-state propagation
delays
Output enable times
EO
O
n
HIGH
5
45
20
18
45
20
18
90
40
36
90
40
36
ns
ns
ns
ns
ns
ns
10
15
5
10
15
t
PZH
LOW
t
PZL
Output disable times
EO
O
n
HIGH
5
35
20
18
45
20
18
70
40
36
90
40
36
ns
ns
ns
ns
ns
ns
10
15
5
10
15
t
PHZ
LOW
t
PLZ
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