參數(shù)資料
型號(hào)： SN54HC259FK
廠商： TEXAS INSTRUMENTS INC
元件分類： 鎖存器
英文描述： HC/UH SERIES, LOW LEVEL TRIGGERED D LATCH, TRUE OUTPUT, CQCC20
封裝： CERAMIC, LCC-20
文件頁(yè)數(shù)： 10/12頁(yè)
文件大小： 205K
代理商： SN54HC259FK
SN54HC259, SN74HC259
8-BIT ADDRESSABLE LATCHES
SCLS134B – DECEMBER 1982 – REVISED MAY 1997
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
VCC
TA = 25°C
SN54HC259
SN74HC259
UNIT
VCC
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
80
120
100
CLR low
4.5 V
16
24
20
t
Pulse duration
6 V
14
20
17
ns
tw
Pulse duration
2 V
80
120
100
ns
G low
4.5 V
16
24
20
6 V
14
20
17
↑
2 V
75
115
95
tsu
Setup time, data or address before G
↑
4.5 V
15
23
19
ns
6 V
13
20
16
↑
2 V
5
th
Hold time, data or address after G
↑
4.5 V
5
ns
6 V
5
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
VCC
TA = 25°C
SN54HC259
SN74HC259
UNIT
PARAMETER
(INPUT)
(OUTPUT)
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
60
150
225
190
tPHL
CLR
Any Q
4.5 V
18
30
45
38
ns
6 V
14
26
38
32
2 V
56
130
195
165
Data
Any Q
4.5 V
17
26
39
33
6 V
13
22
33
28
2 V
74
200
300
250
tpd
Address
Any Q
4.5 V
21
40
60
50
ns
6 V
17
34
51
43
2 V
66
170
255
215
G
Any Q
4.5 V
20
34
51
43
6 V
16
29
43
37
2 V
28
75
110
95
tt
Any
4.5 V
8
15
22
19
ns
6 V
6
13
19
16
operating characteristics, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance per latch
No load
33
pF
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