参数资料
型号: SN74AS253ADR
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, DUAL 4 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16
封装: PLASTIC, SO-16
文件页数: 13/18页
文件大小: 706K
代理商: SN74AS253ADR
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1OF4 DATA SELECTORS/MULTIPLEXERS
WITH 3STATE OUTPUTS
SDAS216A APRIL 1982 REVISED DECEMBER 1994
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
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
(INPUT)
(OUTPUT)
SN54ALS253
SN74ALS253
MIN
MAX
MIN
MAX
tPLH
A or B
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
Data
(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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