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参数资料
| 型号： | SN54HCT157FKR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | HCT SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 4/6页 |
| 文件大小： | 105K |
| 代理商： | SN54HCT157FKR |
SN54HCT157, SN74HCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCLS071B – NOVEMBER 1988 – REVISED MAY 1997
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
SN54HCT157
SN74HCT157
UNIT
PARAMETER
(INPUT)
(OUTPUT)
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
AorB
Y
4.5 V
18
28
42
35
A or B
Y
5.5 V
15
25
38
32
t d
A/B
Y
4.5 V
20
32
48
40
ns
tpd
A/B
Y
5.5 V
17
29
43
36
ns
G
Y
4.5 V
18
26
39
33
G
Y
5.5 V
15
23
35
30
tt
Any
4.5 V
8
15
22
19
ns
tt
Any
5.5 V
7
14
21
17
ns
switching characteristics over recommended operating free-air temperature range, CL = 150 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
VCC
TA = 25°C
SN54HCT157
SN74HCT157
UNIT
PARAMETER
(INPUT)
(OUTPUT)
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
AorB
Y
4.5 V
23
42
63
52
A or B
Y
5.5 V
19
38
52
46
t d
A/B
Y
4.5 V
24
46
72
58
ns
tpd
A/B
Y
5.5 V
21
41
61
52
ns
G
Y
4.5 V
21
39
58
48
G
Y
5.5 V
19
35
49
43
tt
Any
4.5 V
17
42
63
53
ns
tt
Any
5.5 V
14
38
57
48
ns
operating characteristics, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load
12
pF
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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