74LV251 [NXP]
8-input multiplexer 3-State; 8输入多路复用器三态
| 型号： | 74LV251 |
| 厂家： | 
NXP |
| 描述： | 8-input multiplexer 3-State |
| 文件： | 总12页 (文件大小：120K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
74LV251
8-input multiplexer (3-State)
Product specification
1998 May 20
Supersedes data of 1997 Apr 10
IC24 Data Handbook
Philips
Semiconductors
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
FEATURES
DESCRIPTION
The 74LV251 is a low-voltage Si-gate CMOS device and is pin and
function compatible with 74HC/HCT251.
• Optimized for low voltage applications: 1.0 to 3.6 V
• Accepts TTL input levels between V = 2.7 V and V = 3.6 V
CC
CC
The 74LV251 is an 8-input multiplexer with 8 binary inputs (I to I ), an
output enable input (OE) and three select inputs (S , S , S ). 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.
0
7
• Typical V
(output ground bounce) < 0.8 V at V = 3.3 V,
OLP
= 25°C
CC
0
1
2
T
amb
• Typical V
(output V undershoot) > 2 V at V = 3.3 V,
OHV
= 25°C
OH
CC
T
amb
• 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 category: MSI
CC
QUICK REFERENCE DATA
GND = 0 V; T
= 25°C; t = t ≤ 2.5 ns
amb
r
f
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
Propagation delay
I to Y
C = 15 pF;
L
14
16
19
20
V
CC
= 3.3 V
n
t
/t
I to Y
ns
PHL PLH
n
S to Y
n
S to Y
n
C
C
Input capacitance
3.5
44
pF
pF
I
V
= 3.3 V
CC
Power dissipation capacitance per gate
PD
1
V = GND to V
I
CC
NOTE:
1. C is used to determine the dynamic power dissipation (P in µW)
PD
D
2
2
P
= C × V
× f )ȍ (C × V
× f ) where:
D
PD
CC
i
L
CC o
f = input frequency in MHz; C = output load capacitance in pF;
i
L
f = output frequency in MHz; V = supply voltage in V;
o
CC
2
ȍ (C × V
× f ) = sum of the outputs.
L
CC
o
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE OUTSIDE NORTH AMERICA
NORTH AMERICA
74LV251 N
PKG. DWG. #
SOT38-4
16-Pin Plastic DIL
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
74LV251 N
74LV251 D
74LV251 DB
74LV251 PW
16-Pin Plastic SO
74LV251 D
SOT109-1
SOT338-1
SOT403-1
16-Pin Plastic SSOP Type II
16-Pin Plastic TSSOP Type I
74LV251 DB
74LV251PW DH
2
1998 May 20
853–1967 19420
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
PIN CONFIGURATION
PIN DESCRIPTION
PIN
SYMBOL
NUMBER
FUNCTION
Multiplexer inputs
Multiplexer output
V
1
I
I
I
16
15
3
CC
2
I
4
I
5
I
6
I
7
4, 3, 2, 1, 15,
14, 13, 12
2
I to I
0
7
3
4
5
6
14
13
12
11
1
5
6
Y
Y
I
0
Complementary multiplexer output
Y
Y
3-State output enable input (active
LOW)
7
OE
S
S
S
0
1
2
8
GND
Ground (0 V)
7
8
10
9
QE
11, 10, 9
16
S to S
0
Select inputs
2
GND
V
CC
Positive supply voltage
SV00629
LOGIC SYMBOL
LOGIC SYMBOL (IEEE/IEC)
MUX
11 10
9
7
EN
0
S0 S1 S2
11
10
9
4
3
2
1
I
I
I
I
0
1
2
3
0
7
G
2
0
1
2
3
4
Y
Y
5
6
3
2
15
14
13
12
I
I
I
I
5
6
4
5
6
7
1
15
14
13
12
4
5
6
7
OE
7
SV00631
SV00630
FUNCTIONAL DIAGRAM
4
3
2
1
I
15
14
13
12
I
I
I
I
I
I
I
0
1
2
3
4
5
6
7
11
10
S
S
0
1
MULTIPLEXER
9
S
2
7
OE
Y
6
Y
5
SV00632
3
1998 May 20
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
FUNCTION TABLE
INPUTS
OUTPUTS
OE
S
2
S
1
S
0
I
0
I
1
I
2
I
3
I
4
I
5
I
6
I
7
Y
Y
H
X
X
X
X
X
X
X
X
X
X
X
Z
Z
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
L
H
X
X
X
X
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
L
H
L
L
H
L
H
H
L
L
L
L
L
L
L
L
H
H
H
H
L
L
H
H
X
X
X
X
X
X
X
X
L
H
X
X
X
X
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
L
H
L
L
H
L
H
H
L
L
L
L
H
H
H
H
L
L
L
L
L
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
L
X
X
X
X
X
X
X
X
H
L
L
H
L
H
H
H
L
H
H
L
H
H
H
H
H
H
H
H
L
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
L
H
L
L
H
L
L
L
L
H
H
H
L
H
H
NOTES:
H
L
X
Z
=
=
=
=
HIGH voltage level
LOW voltage level
don’t care
high impedance OFF-state
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
3.3
–
MAX
UNIT
V
CC
DC supply voltage
See Note 1
1.0
0
3.6
V
V
V
V
I
Input voltage
V
CC
V
CC
V
O
Output voltage
0
–
See DC and AC
characteristics
–40
–40
+85
+125
T
Operating ambient temperature range in free air
Input rise and fall times
°C
amb
V
V
V
= 1.0V to 2.0V
= 2.0V to 2.7V
= 2.7V to 3.6V
–
–
–
–
–
–
500
200
100
CC
CC
CC
t , t
r
ns/V
f
NOTE:
1. The LV is guaranteed to function down to V = 1.0V (input levels GND or V ); DC characteristics are guaranteed from V = 1.2V to V = 5.5V.
CC
CC
CC
CC
4
1998 May 20
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
1, 2
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to GND (ground = 0 V).
SYMBOL
PARAMETER
DC supply voltage
CONDITIONS
RATING
UNIT
V
V
CC
–0.5 to +4.6
"I
DC input diode current
DC output diode current
V < –0.5 or V > V + 0.5V
20
50
mA
mA
IK
I
I
CC
"I
V
O
< –0.5 or V > V + 0.5V
OK
O
CC
DC output source or sink current
– standard outputs
"I
–0.5V < V < V + 0.5V
25
mA
O
O
CC
DC V or GND current for types with
– standard outputs
CC
"I
"I
,
50
mA
GND
CC
T
stg
Storage temperature range
–65 to +150
°C
Power dissipation per package
– plastic DIL
– plastic mini-pack (SO)
for temperature range: –40 to +125°C
above +70°C derate linearly with 12 mW/K
above +70°C derate linearly with 8 mW/K
above +60°C derate linearly with 5.5 mW/K
750
500
400
P
TOT
mW
– plastic shrink mini-pack (SSOP and TSSOP)
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions. Voltages are referenced to GND (ground = 0 V).
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
V
-40°C to +85°C
-40°C to +125°C
1
MIN
0.9
1.4
2.0
TYP
MAX
MIN
0.9
1.4
2.0
MAX
V
V
V
V
V
V
V
V
V
V
= 1.2 V
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
HIGH level Input
voltage
V
IH
= 2.0 V
= 2.7 to 3.6 V
= 1.2 V
0.3
0.6
0.8
0.3
0.6
0.8
LOW level Input
voltage
V
IL
V
= 2.0 V
= 2.7 to 3.6 V
= 1.2 V; V = V or V –I = 100µA
1.2
2.0
2.7
3.0
I
IH
IL;
O
= 2.0 V; V = V or V –I = 100µA
1.8
2.5
2.8
1.8
2.5
2.8
I
IH
IL;
O
HIGH level output
voltage; all outputs
V
V
V
V
V
V
OH
= 2.7 V; V = V or V –I = 100µA
I
IH
IL;
O
= 3.0 V; V = V or V –I = 100µA
I
IH
IL;
O
HIGH level output
voltage;
STANDARD
outputs
V
CC
= 3.0 V; V = V or V –I = 6mA
2.40
2.82
2.20
OH
I
IH
IL;
O
V
CC
V
CC
V
CC
V
CC
= 1.2 V; V = V or V I
IL; O
= 100µA
= 100µA
= 100µA
= 100µA
0
0
0
0
I
IH
= 2.0 V; V = V or V I
IL; O
0.2
0.2
0.2
0.2
0.2
0.2
I
IH
LOW level output
voltage; all outputs
V
V
OL
= 2.7 V; V = V or V I
IL; O
I
IH
= 3.0 V; V = V or V I
IL; O
I
IH
LOW level output
voltage;
STANDARD
outputs
V
CC
= 3.0 V; V = V or V I = 6mA
IL; O
0.25
0.40
0.50
OL
I
IH
5
1998 May 20
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
DC ELECTRICAL CHARACTERISTICS (Continued)
LIMITS
-40°C to +85°C
-40°C to +125°C
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
1
MIN
TYP
MAX
MIN
MAX
Input leakage
current
I
V
V
= 3.6 V; V = V or GND
1.0
1.0
µA
µA
I
CC
I
CC
Quiescent supply
current; MSI
I
= 3.6 V; V = V or GND; I = 0
20.0
500
160
850
CC
CC
I
CC
O
Additional
quiescent supply
current per input
∆I
CC
V
CC
= 2.7 V to 3.6 V; V = V – 0.6 V
µA
I
CC
NOTE:
1. All typical values are measured at T
= 25°C.
amb
AC CHARACTERISTICS
GND = 0V; t = t = 2.5ns; C = 50pF; R = 1KΩ
r
f
L
L
LIMITS
–40 to +85 °C
CONDITION
(V)
SYMBOL
PARAMETER
WAVEFORM
UNIT
–40 to +125 °C
1
V
CC
MIN
TYP
90
MAX
MIN
MAX
1.2
2.0
2.7
31
58
43
34
70
51
41
Propagation delay
t
t
t
t
t
Figure 1
ns
PHL/ PLH
I to Y
n
23
2
3.0 to 3.6
1.2
17
100
34
2.0
65
48
38
77
56
45
Propagation delay
t
Figure 2
Figure 1
Figure 2
Figure 2
Figure 2
ns
ns
ns
ns
ns
PHL/ PLH
I to Y
n
2.7
25
2
3.0 to 3.6
1.2
19
120
41
2.0
77
56
45
92
68
54
Propagation delay
S to Y
t
PHL/ PLH
n
2.7
30
2
3.0 to 3.6
1.2
23
125
43
2.0
82
60
48
97
71
57
Propagation delay
S to Y
t
PHL/ PLH
n
2.7
31
2
3.0 to 3.6
1.2
24
65
22
16
2.0
43
31
25
51
38
30
3-State output disable time
OE to Y, Y
t
t
t
PZH/ PZL
2.7
2
3.0 to 3.6
1.2
12
60
22
17
2.0
39
29
24
48
36
29
3-State output disable time
OE to Y, Y
t
PHZ/ PLZ
2.7
2
3.0 to 3.6
13
NOTES:
1. Unless otherwise stated, all typical values are measured at T
= 25°C
amb
2. Typical values are measured at V = 3.3 V.
CC
6
1998 May 20
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
AC WAVEFORMS
V
V
V
= 1.5 V at V ≥ 2.7 V
M
CC
= 0.5 V × V at V < 2.7 V
V
M
CC
CC
CC
and V are the typical output voltage drop that occur with the
OL
OH
OE INPUT
GND
V
output load.
V = V + 0.3 V at V ≥ 2.7 V
M
X
OL
CC
V = V + 0.1 × V at V < 2.7 V
X
Y
Y
OL
CC
CC
t
t
PZL
PLZ
V
V
= V – 0.3 V at V ≥ 2.7V
OH CC
V
CC
= V – 0.1 × V at V < 2.7 V
OH
CC
CC
OUTPUT
V
LOW-to-OFF
OFF-to-LOW
M
V
V
CC
X
V
OL
I
, S INPUT
n
V
t
n
M
PZH
t
PHZ
GND
V
OH
t
t
PLH
V
PHL
OUTPUT
Y
V
V
M
HIGH-to-OFF
OFF-to-HIGH
OH
V
GND
Y OUTPUT
M
outputs
enabled
outputs
disabled
outputs
enabled
V
OL
SV00635
SV00633
Figure 3. 3-State enable and disable times
Figure 1. Multiplexer input (I ) and select input (S ) to
n
n
output (Y) propagation delays.
TEST CIRCUIT
V
CC
V
CC
I , S INPUT
V
n
n
M
V
V
O
I
GND
PULSE
GENERATOR
D.U.T.
t
t
PLH
PHL
50pF
V
OH
R = 1KΩ
L
R
T
C
L
V
Y OUTPUT
M
V
OL
Test Circuit for switching times
DEFINITIONS
SV00634
Figure 2. Multiplexer input (I and the select input (S ) to
n)
n
R
T
R
L
= Termination resistance should be equal to Z
= Load resistor
of pulse generators.
OUT
output (Y) propagation delays.
C
= Load capacitance includes jig and probe capacitance
L
TEST
V
V
I
CC
t
t
< 2.7V
V
CC
PLH/ PHL
2.7–3.6V
2.7V
SV00776
Figure 4. Load circuitry for switching times.
7
1998 May 20
Philips Semiconductors
Product specification
8–input multiplexer (3–State)
74LV251
DIP16: plastic dual in-line package; 16 leads (300 mil)
SOT38-4
8
1998 May 20
Philips Semiconductors
Product specification
8–input multiplexer (3–State)
74LV251
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
9
1998 May 20
Philips Semiconductors
Product specification
8–input multiplexer (3–State)
74LV251
SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm
SOT338-1
10
1998 May 20
Philips Semiconductors
Product specification
8–input multiplexer (3–State)
74LV251
TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm
SOT403-1
11
1998 May 20
Philips Semiconductors
Product specification
8–input multiplexer (3–State)
74LV251
DEFINITIONS
Data Sheet Identification
Product Status
Definition
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
Objective Specification
Formative or in Design
This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.
Preliminary Specification
Product Specification
Preproduction Product
Full Production
This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. PhilipsSemiconductorsmakesnorepresentationorwarrantythatsuchapplicationswillbesuitableforthespecifiedusewithoutfurthertesting
or modification.
LIFE SUPPORT APPLICATIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
orsystemswheremalfunctionofaPhilipsSemiconductorsandPhilipsElectronicsNorthAmericaCorporationProductcanreasonablybeexpected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
print code
Date of release: 05-96
9397-750-04439
Document order number:
Philips
Semiconductors
相关型号：
SI9130DB
5- and 3.3-V Step-Down Synchronous ConvertersWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1-E3
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135_11
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9136_11
Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130CG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130LG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130_11
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137DB
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137LG
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9122E
500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
©2020 ICPDF网 联系我们和版权申明