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SN74AS253AD 数据表(PDF) 4 Page - Texas Instruments

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部件名 SN74AS253AD
功能描述  DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
Download  7 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74AS253AD 数据表(HTML) 4 Page - Texas Instruments

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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†
UNIT
SN54ALS253
SN74ALS253
MIN
MAX
MIN
MAX
tPLH
AorB
Any Y
5
30
5
21
ns
tPHL
A or B
Any Y
5
27
5
21
ns
tPLH
Data
Any Y
2
15
2
10
ns
tPHL
(any C)
Any Y
3
18
3
14
ns
tPZH
OE
Any Y
3
20
3
14
ns
tPZL
OE
Any Y
2
19
4
16
ns
tPHZ
OE
Any Y
2
12
2
10
ns
tPLZ
OE
Any Y
2
18
2
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, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN74AS253A
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
SN74AS253A
UNIT
MIN
NOM
MAX
UNIT
VCC
Supply voltage
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
–15
mA
IOL
Low-level output current
48
mA
TA
Operating free-air temperature
0
70
°C


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