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參數(shù)資料
| 型號(hào)： | SN54ALS253FK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS |
| 中文描述： | 雙1 - - 4數(shù)據(jù)選擇器/多路復(fù)用3態(tài)輸出 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 112K |
| 代理商： | SN54ALS253FK |
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS216A – APRIL 1982 – REVISED DECEMBER 1994
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,
R1 = 500
,
R2 = 500
,
TA = MIN to MAX
SN54ALS253
MIN
MAX
5
30
UNIT
SN74ALS253
MIN
5
MAX
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A or B
Any Y
21
ns
5
27
5
21
Data
(any C)
Any Y
2
15
2
10
ns
3
18
3
14
OE
Any Y
3
20
3
14
ns
2
19
4
16
OE
Any Y
2
2
12
18
2
2
10
14
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
: SN74AS253A
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
SN74AS253A
MIN
NOM
UNIT
MAX
VCC
VIH
VIL
IOH
IOL
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
–15
mA
Low-level output current
48
mA
°
C
Operating free-air temperature
0
70
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