參數(shù)資料
型號： SN54HC259W
廠商： Texas Instruments, Inc.
英文描述： Variable-frequency Critical-Mode Voltage-Mode Flyback Controller with 700V Maximum Startup and no Frequency Clamp; Package: SOIC-8 Narrow Body; No of Pins: 8; Container: Tape and Reel; Qty per Container: 2500
中文描述： 8位可尋址鎖存器
文件頁數(shù)： 7/9頁
文件大?。?/td> 134K
代理商： SN54HC259W
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
MIN
80
SN54HC259
MIN
120
SN74HC259
MIN
100
UNIT
MAX
MAX
MAX
2 V
CLR low
4.5 V
16
24
20
tw
Pulse duration
6 V
14
20
17
ns
2 V
80
120
100
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
5
5
th
Hold time, data or address after G
↑
4.5 V
6 V
5
5
5
5
5
5
ns
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
VCC
TA = 25
°
C
TYP
SN54HC259
MIN
SN74HC259
MIN
UNIT
(OUTPUT)
MIN
MAX
150
MAX
225
MAX
190
2 V
60
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
6 V
8
6
15
13
22
19
19
16
ns
operating characteristics, T
A
= 25
°
C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance per latch
No load
33
pF
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