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参数资料
| 型号： | SN54AS137FKR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | AS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 4/6页 |
| 文件大小： | 103K |
| 代理商： | SN54AS137FKR |
SN54ALS137, SN74ALS137A
SN54AS137, SN74AS137
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS WITH ADDRESS LATCHES
SDAS203B – APRIL 1982 – REVISED JANUARY 1995
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 ,
TA = MIN to MAX
UNIT
(INPUT)
(OUTPUT)
SN54ALS137
SN74ALS137A
MIN
MAX
MIN
MAX
tPLH
ABC
Y
5
25
5
20
ns
tPHL
A, B, C
Y
6
25
6
20
ns
tPLH
OE2
Y
4
15
3
12
ns
tPHL
OE2
Y
5
18
4
15
ns
tPLH
OE1
Y
5
21
4
17
ns
tPHL
OE1
Y
5
19
4
15
ns
tPLH
LE
Y
7
27
6
22
sn
tPHL
LE
Y
7
25
7
20
sn
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN54AS137
– 55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74AS137
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
– 65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54AS137
SN74AS137
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
IOH
High-level output current
–2
mA
IOL
Low-level output current
20
mA
tw
Pulse duration, LE low
5
6.5
ns
tsu
Setup time at A, B, and C before LE
↑
4.5
4
ns
th
Hold time at A, B, and C after LE
↑
1
ns
TA
Operating free-air temperature
–55
125
0
70
°C
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