參數(shù)資料
型號(hào)： SN74F251
廠商： Texas Instruments, Inc.
英文描述： 1-OF-8 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
中文描述： 1中，8個(gè)數(shù)據(jù)選擇器/多路復(fù)用器與三態(tài)輸出
文件頁(yè)數(shù)： 1/7頁(yè)
文件大?。?/td> 99K
代理商： SN74F251
SN54F251B, SN74F251B
1-OF-8 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS066A – MARCH 1987 – REVISED OCTOBER 1993
Copyright
1993, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
3-State Versions of SN54F151B and
SN74F151B
3-State Outputs Interface Directly With
System Bus
Performs Parallel-to-Serial Conversion
Complementary Outputs Provide True and
Inverted Data
Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
description
These data selectors/multiplexers contain full
binary decoding to select one of eight data
sources
and
feature
complementary outputs. The 3-state outputs can
interface with and drive data lines of bus-
organized systems. When the strobe (G) input is
high, both outputs are in a high-impedance state
in which both the upper and lower transistors of
each totem-pole output are off, and the output
neither drives nor loads the bus significantly.
strobe-controlled
The SN54F251B is characterized for operation
over the full military temperature range of –55
°
C
to 125
°
C. The SN74F251B is characterized for
operation from 0
°
C to 70
°
C.
FUNCTION TABLE
INPUTS
OUTPUTS
SELECT
STROBE
G
C
B
A
Y
W
X
X
X
H
Z
Z
L
L
L
L
D0
D0
L
L
H
L
D1
D1
L
H
L
L
D2
D2
L
H
H
L
D3
D3
H
L
L
L
D4
D4
H
L
H
L
D5
D5
H
H
L
L
D6
D6
H
H
H
L
D7
D7
D0, D1, . . . D7 = the level of the respective D input.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
D3
D2
D1
D0
Y
W
G
GND
V
CC
D4
D5
D6
D7
A
B
C
SN54F251B . . . J PACKAGE
SN74F251B . . . 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
D5
D6
NC
D7
A
D1
D0
NC
Y
W
SN54F251B . . . FK PACKAGE
(TOP VIEW)
D
D
N
C
B
D
G
G
N
NC – No internal connection
V
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.
相關(guān)PDF資料
PDF描述
SN54F251B 128k x 8 NONVOLATILE SRAM, 3.3V Input Voltage 32-DIP MODULE -40 to 85
SN54F251BJ 128Kx8 Nonvolatile SRAM, 10% Voltage Tolerance 32-DIP MODULE 0 to 70
SN54F251BFK 1-OF-8 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SN74F543DB OCTAL REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS
SN74F657DWR OCTAL TRANSCEIVER WITH PARITY GENERATOR/CHECKER AND 3-STATE OUTPUTS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN74F251AD 制造商:Texas Instruments 功能描述:
SN74F251BD 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 1 to 8 w/Tri-St Out RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線(xiàn)路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
SN74F251BDE4 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 1-of-8 Data Slctr/ Mltplxr W/3-St Otpt RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線(xiàn)路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
SN74F251BDG4 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 1 of 8 Data Selectr Multiplexers RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線(xiàn)路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
SN74F251BDR 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 1-of-8 Data Slctr/ Mltplxr W/3-St Otpt RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線(xiàn)路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
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