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參數資料
| 型號： | SN54AHC257W |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS |
| 中文描述： | 四2線1線數據選擇器/多路復用3態(tài)輸出 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 135K |
| 代理商： | SN54AHC257W |
SN54AHC257, SN74AHC257
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SCLS349C – MAY 1996 – REVISED JULY 1998
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Operating Range 2-V to 5.5-V V
CC
EPIC
(Enhanced-Performance Implanted
CMOS) Process
Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), Thin Very Small-Outline (DGV), Thin
Shrink Small-Outline (PW), and Ceramic
Flat (W) Packages, Ceramic Chip Carriers
(FK), and Standard Plastic (N) and Ceramic
(J) DIPs
description
These
selectors/multiplexers are designed for 2-V to
5.5-V V
CC
operation.
The ’AHC257 devices are designed to multiplex
signals from 4-bit data sources to 4-output data
lines in bus-organized systems. The 3-state
outputs do not load the data lines when the
output-enable (OE) input is at a high logic level.
quadruple
2-line
to
1-line
data
To ensure the high-impedance state during power
up or power down, OE should be tied to V
CC
through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking
capability of the driver.
The SN54AHC257 is characterized for operation
over the full military temperature range of –55
°
C
to 125
°
C. The SN74AHC257 is characterized for
operation from –40
°
C to 85
°
C.
FUNCTION TABLE
INPUTS
OUTPUT
Y
OE
H
A/B
A
B
X
X
X
Z
L
L
L
X
L
L
L
H
X
H
L
H
X
L
L
L
H
X
H
H
P
Copyright
1998, Texas Instruments Incorporated
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC is a trademark of Texas Instruments Incorporated.
SN54AHC257 . . . J OR W PACKAGE
SN74AHC257 . . . D, DB, DGV, N, OR PW PACKAGE
(TOP VIEW)
SN54AHC257 . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A/B
1A
1B
1Y
2A
2B
2Y
GND
V
CC
OE
4A
4B
4Y
3A
3B
3Y
3
2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
4A
4B
NC
4Y
3A
1B
1Y
NC
2A
2B
1
A
N
3
3
V
O
2
G
N
C
NC – No internal connection
相關PDF資料 |
PDF描述 |
|---|---|
| SN74AHC257D | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS |
| SN74AHC257DB | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS |
| SN74AHC257DGV | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS |
| SN74AHC257N | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS |
| SN74AHC257PW | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SN54AHC273 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:OCTAL D-TYPE FLIP-FLOPS WITH CLEAR |
| SN54AHC273_08 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:OCTAL D-TYPE FLIP-FLOPS WITH CLEAR |
| SN54AHC273FK | 制造商:TI 制造商全稱:Texas Instruments 功能描述:OCTAL D-TYPE FLIP-FLOPS WITH CLEAR |
| SN54AHC273J | 制造商:TI 制造商全稱:Texas Instruments 功能描述:OCTAL D-TYPE FLIP-FLOPS WITH CLEAR |
| SN54AHC273W | 制造商:TI 制造商全稱:Texas Instruments 功能描述:OCTAL D-TYPE FLIP-FLOPS WITH CLEAR |
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