參數(shù)資料
型號(hào)： 74LV251
廠商： NXP Semiconductors N.V.
英文描述： 8-input multiplexer 3-State
中文描述： 8輸入多路復(fù)用三態(tài)
文件頁數(shù)： 2/12頁
文件大?。?/td> 116K
代理商： 74LV251
Philips Semiconductors
Product specification
74LV251
8-input multiplexer (3-State)
2
1998 May 20
853–1967 19420
FEATURES
Optimized for low voltage applications: 1.0 to 3.6 V
Accepts TTL input levels between V
CC
= 2.7 V and V
CC
= 3.6 V
Typical V
OLP
(output ground bounce) < 0.8 V at V
CC
= 3.3 V,
T
amb
= 25
°
C
Typical V
OHV
(output V
OH
undershoot) > 2 V at V
CC
= 3.3 V,
T
amb
= 25
°
C
True and complement outputs
Both outputs are 3-State for further multiplexer expansion
Multifunction capability
Permits multiplexing from n-lines to one line
Output capability: standard
I
CC
category: MSI
DESCRIPTION
The 74LV251 is a low-voltage Si-gate CMOS device and is pin and
function compatible with 74HC/HCT251.
The 74LV251 is an 8-input multiplexer with 8 binary inputs (I
0
to I
7
), an
output enable input (OE) and three select inputs (S
0
, S
1
, S
2
). One of
the eight binary inputs is selected by the select inputs and is routed to
the outputs (Y, Y). Both outputs are in the high impedance OFF-state
(Z) when the output enable input is HIGH, allowing multiplexer
expansion by tying the outputs.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°
C; t
r
= t
f
≤
2.5 ns
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
t
PHL
/t
PLH
Propagation delay
I
n
to Y
I
n
to Y
S
n
to Y
S
n
to Y
Input capacitance
C
L
= 15 pF;
V
CC
= 3.3 V
14
16
19
20
ns
C
I
3.5
pF
C
PD
Power dissipation capacitance per gate
V
CC
= 3.3 V
V
I
= GND to V
CC1
44
pF
NOTE:
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W)
P
D
= C
PD
×
V
CC2
×
f
i
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz; C
L
= output load capacitance in pF;
f
o
= output frequency in MHz; V
CC
= supply voltage in V;
(C
L
×
V
CC2
×
f
o
) = sum of the outputs.
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
PKG. DWG. #
16-Pin Plastic DIL
–40
°
C to +125
°
C
74LV251 N
74LV251 N
SOT38-4
16-Pin Plastic SO
–40
°
C to +125
°
C
74LV251 D
74LV251 D
SOT109-1
16-Pin Plastic SSOP Type II
–40
°
C to +125
°
C
74LV251 DB
74LV251 DB
SOT338-1
16-Pin Plastic TSSOP Type I
–40
°
C to +125
°
C
74LV251 PW
74LV251PW DH
SOT403-1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
74LV251D 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3.3V 8-INPUT MUX 3-S RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(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
74LV251D,112 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3.3V 8-INPUT MUX 3-S RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(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
74LV251D,118 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3.3V 8-INPUT MUX 3-S RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(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
74LV251DB 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3.3V 8-INPUT MUX 3-S RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(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
74LV251DB,112 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3.3V 8-INPUT MUX 3-S RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(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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