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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)： | 1/7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
Copyright
1994, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
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.
data
selectors/multiplexers
contain
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
Y
SELECT
B
DATA
C1
OE
A
C0
C2
C3
X
X
X
X
X
X
H
Z
L
L
L
X
X
X
L
L
L
L
H
X
X
X
L
H
L
H
X
L
X
X
L
L
L
H
X
H
X
X
L
H
H
L
X
X
L
X
L
L
H
L
X
X
H
X
L
H
H
H
X
X
X
L
L
L
H
H
X
X
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)
3
2 1 20 19
9 10 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
1
N
2
2
2
1
G
N
NC – No internal connection
V
C
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1OE
B
1C3
1C2
1C1
1C0
1Y
GND
V
CC
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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