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參數(shù)資料
| 型號： | SN54ALS253J |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 編、解碼器及復(fù)用、解復(fù)用 |
| 英文描述： | ALS SERIES, DUAL 4 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, CDIP16 |
| 封裝： | 0.300 INCH, CERAMIC, DIP-16 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大小： | 791K |
| 代理商： | SN54ALS253J |
SN54ALS253, SN74ALS253, SN74AS253A
DUAL 1OF4 DATA SELECTORS/MULTIPLEXERS
WITH 3STATE OUTPUTS
SDAS216A APRIL 1982 REVISED DECEMBER 1994
Copyright
1994, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
3-State Versions of the ′ALS153 and
SN74AS153
Permits Multiplexing From n Lines to
One Line
Performs Parallel-to-Serial Conversion
Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
description
These
data
selectors/multiplexers
contain
inverters and drivers to supply full binary decoding
data selection to the AND-OR gates. Separate
output control inputs are provided for each of the
two 4-line sections.
The 3-state outputs can interface with and drive
data lines of bus-organized systems. With all but
one of the common outputs disabled (at a
high-impedance state), the low impedance of the
single enabled output drives the bus line to a high
or low logic level. Each output has its own
output-enable (OE) input. The output is disabled
when OE is high.
The SN54ALS253 is characterized for operation
over the full military temperature range of 55
°C
to 125
°C. The SN74ALS253 and SN74AS253A
are characterized for operation from 0
°C to 70°C.
FUNCTION TABLE
INPUTS
OUTPUT
SELECT
DATA
OE
OUTPUT
Y
B
A
C0
C1
C2
C3
OE
Y
X
H
Z
L
LL
XX
X
L
LH
XX
X
L
H
L
HX
LX
XL
L
HX
X
L
H
LX
XL
L
H
LX
XH
X
L
H
HX
XX
L
H
X
H
L
H
Select inputs A and B are common to both sections.
SN54ALS253 ...J PACKAGE
SN74ALS253, SN74AS253A ...D OR N PACKAGE
(TOP VIEW)
32 1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
A
2C3
NC
2C2
2C1
1C3
1C2
NC
1C1
1C0
SN54ALS253 . . . FK PACKAGE
(TOP VIEW)
B
1OE
NC
2Y
2C0
2OE
1Y
GND
NC
NC No internal connection
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1OE
B
1C3
1C2
1C1
1C0
1Y
GND
VCC
2OE
A
2C3
2C2
2C1
2C0
2Y
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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