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參數(shù)資料
| 型號： | SN54ALS253J |
| 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)： | 5/7頁 |
| 文件大?。?/td> | 112K |
| 代理商： | SN54ALS253J |
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS216A – APRIL 1982 – REVISED DECEMBER 1994
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS253A
MIN
TYP
UNIT
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
II = –18 mA
IOH = –2 mA
IOH = –15 mA
IOL = 48 mA
VO = 2.7 V
VO = 0.4 V
–1.2
V
VOH
VCC –2
2.4
V
3.2
VOL
IOZH
IOZL
0.35
0.5
V
μ
A
μ
A
50
–50
II
A, B
VCC= 5 5 V
VCC = 5.5 V,
VI= 7 V
VI = 7 V
0.2
mA
All others
0.1
IIH
A, B
VCC= 5 5 V
VCC = 5.5 V,
VI= 2 7 V
VI = 2.7 V
40
μ
A
All others
20
IIL
A, B
VCC= 5 5 V
VCC = 5.5 V,
VI= 0 4 V
VI = 0.4 V
–1
mA
All others
–0.5
IO
VCC = 5.5 V,
VO = 2.25 V
Outputs high
–30
–112
mA
18
29
ICC
VCC = 5.5 V
Outputs low
Outputs disabled
20
21
32
33
mA
All typical values are at VCC = 5 V, TA = 25
°
C.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
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§
SN74AS253A
MIN
3
UNIT
MAX
13.5
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A or B
Y
ns
3
11.5
Data
(any C)
Y
2.5
7.5
ns
2.5
8
OE
Any Y
2
12.5
ns
2.5
11.5
OE
Any Y
1
1
6
7
ns
§For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
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