参数资料
型号: SN54HC4040W
厂商: Texas Instruments, Inc.
元件分类: 基准电压源/电流源
英文描述: Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection
中文描述: 无电容,NMOS管,150mA的低压差稳压器的反向电流保护
文件页数: 4/17页
文件大小: 608K
代理商: SN54HC4040W
SCLS160D DECEMBER 1982 REVISED SEPTEMBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
VCC
TA = 25
°
C
MIN
SN54HC4040
MIN
SN74HC4040
MIN
UNIT
MAX
5.5
MAX
3.7
MAX
4.3
2 V
fclock
Clock frequency
4.5 V
28
19
22
MHz
6 V
33
22
25
2 V
90
135
115
CLK high or low
4.5 V
18
27
23
tw
Pulse duration
6 V
15
23
20
ns
2 V
70
105
90
CLR high
4.5 V
14
21
18
6 V
12
18
15
2 V
60
90
75
tsu
Setup time, CLR inactive before CLK
4.5 V
6 V
12
10
18
15
15
13
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
SN54HC4040
MIN
3.7
SN74HC4040
MIN
4.3
UNIT
(OUTPUT)
MIN
5.5
MAX
MAX
MAX
2 V
10
fmax
4.5 V
28
45
19
22
MHz
6 V
33
53
22
25
2 V
62
150
225
190
tpd
CLK
QA
4.5 V
16
30
45
38
ns
6 V
12
26
38
32
2 V
63
140
210
175
tPHL
CLR
Any
4.5 V
17
28
42
35
ns
6 V
13
24
36
30
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
No load
88
pF
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