參數(shù)資料
型號: SN54ALS137AJ
廠商: Texas Instruments, Inc.
英文描述: 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS WITH ADDRESS LATCHES
中文描述: 3線至8線解碼器/解復用器與地址鎖存
文件頁數(shù): 4/15頁
文件大?。?/td> 518K
代理商: SN54ALS137AJ
SN54ALS137A, SN74ALS137A, SN74AS137
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
WITH ADDRESS LATCHES
SDAS203C – 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
SN54ALS137A
MIN
MAX
5
UNIT
SN74ALS137A
MIN
5
MAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
A B C
A, B, C
Y
25
20
ns
6
25
6
20
G2
Y
4
15
3
12
ns
5
18
4
15
G1
Y
5
21
4
17
ns
5
19
4
15
LE
Y
7
7
27
25
6
7
22
20
ns
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, V
CC
Input voltage, V
I
Operating free-air temperature range, T
A
: SN74AS137
Storage temperature range
7 V
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0
°
C to 70
°
C
–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
SN74AS137
UNIT
MIN
NOM
MAX
VCC
VIH
VIL
IOH
IOL
tw
tsu
th
TA
Supply voltage
4.5
5
5.5
V
High-level input voltage
2
V
Low-level input voltage
0.8
V
High-level output current
–2
mA
Low-level output current
20
mA
Pulse duration, LE low
Setup time at A, B, and C before LE
Hold time at A, B, and C after LE
Operating free-air temperature
6.5
ns
4
ns
1
ns
°
C
0
70
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