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參數(shù)資料
| 型號： | SNJ54HCT257FK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Mounting Kit; Contents Of Kit:1 Thermalfilm Insulator, 1 Shoulder Washer, 1 #4 Flat Washer, 1 No. 4-40 UNC-2B Hex Nut, 1 No. 4-40 UNC-2A x 1/2 Long Phillips Pan Head Screw, 1 No. 4 Lockwasher; For Use With:TO-220 Packages RoHS Compliant: Yes |
| 中文描述： | 四2線1線數(shù)據(jù)選擇器/ 3態(tài)輸出多工器 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 267K |
| 代理商： | SNJ54HCT257FK |
SCLS072D NOVEMBER 1988 REVISED SEPTEMBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
SN54HCT257
MIN
SN74HCT257
MIN
UNIT
(OUTPUT)
MIN
MAX
MAX
MAX
A or B
Y
4.5 V
20
30
45
38
tpd
5.5 V
17
27
40
34
ns
A/B
Y
4.5 V
20
30
45
38
5.5 V
17
27
40
34
ten
OE
Y
4.5 V
20
30
45
38
ns
5.5 V
17
27
40
34
tdis
OE
Y
4.5 V
20
30
45
38
ns
5.5 V
17
27
40
34
tt
Any
4.5 V
5.5 V
8
7
15
14
22
21
19
17
ns
switching characteristics over recommended operating free-air temperature range, C
L
= 150 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
VCC
TA = 25
°
C
TYP
SN54HCT257
SN74HCT257
UNIT
(OUTPUT)
MIN
MAX
MIN
MAX
MIN
MAX
A or B
Y
4.5 V
22
38
57
48
tpd
5.5 V
19
35
53
44
ns
A/B
Y
4.5 V
22
38
57
48
5.5 V
19
35
53
44
ten
OE
Y
4.5 V
23
40
60
50
ns
5.5 V
20
38
57
48
tt
Any
4.5 V
5.5 V
17
14
42
38
63
57
53
48
ns
operating characteristics, T
A
= 25
°
C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load
13
pF
3
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