AC11257 [TI]
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS; 四路2号线到1线数据选择器/复用器，具有三态输出
| 型号： | AC11257 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS |
| 文件： | 总12页 (文件大小：302K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ꢀꢁ ꢂꢃ ꢄꢄꢅ ꢆꢀ
ꢇ ꢈꢂꢉ ꢊ ꢈꢋꢌ ꢍ ꢅ ꢎꢌ ꢏꢐꢍ ꢑ ꢒ ꢄ ꢎꢌ ꢏꢐꢍ ꢉꢂꢑꢂ ꢓꢍ ꢌꢍ ꢃꢑꢒ ꢊꢔꢕ ꢈꢌꢑꢏ ꢋ ꢌꢍ ꢖꢍ ꢊ
ꢗ ꢏꢑ ꢘ ꢙ ꢎꢓꢑꢂꢑ ꢍ ꢒ ꢈꢑ ꢋꢈ ꢑꢓ
SCAS049C − MARCH 1989 − REVISED MAY 2004
DB, DW, N, OR PW PACKAGE
(TOP VIEW)
D
D
D
D
D
3-State Outputs Interface Directly With
System Bus
Flow-Through Architecture Optimizes
PCB Layout
A/B
1Y
1A
1B
2A
2B
V
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
Center-Pin V
Minimize High-Speed Switching Noise
and GND Configurations
2Y
CC
GND
GND
GND
GND
3Y
500-mA Typical Latch-Up Immunity at
125°C
Provides Bus Interface From Multiple
Sources in High-Performance Systems
CC
V
CC
14 3A
13 3B
12
11
4Y
OE
4A
4B
description/ordering information
This device is designed to multiplex signals from 4-bit data sources to four 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.
To ensure the high-impedance state during power up or power down, OE should be tied to V
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
through a pullup
CC
ORDERING INFORMATION
ORDERABLE
PART NUMBER
†
T
A
PACKAGE
TOP-SIDE MARKING
PDIP − N
Tube
74AC11257N
74AC11257N
Tube
74AC11257DW
74AC11257DWR
74AC11257DBR
74AC11257PW
74AC11257PWR
SOIC − DW
SSOP − DB
AC11257
AE257
Tape and reel
Tape and reel
Tube
−40°C to 85°C
TSSOP − PW
AE257
Tape and reel
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
INPUTS
OUTPUT
DATA
SELECT
A/B
Y
OE
A
X
L
B
X
X
X
L
H
L
L
L
L
X
L
Z
L
L
H
X
X
H
L
H
H
H
H
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.
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Copyright 2004, Texas Instruments Incorporated
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀꢁ ꢂꢃ ꢄꢄ ꢅꢆ ꢀ
ꢇꢈ ꢂ ꢉꢊ ꢈ ꢋꢌ ꢍ ꢅ ꢎꢌ ꢏ ꢐꢍ ꢑ ꢒ ꢄ ꢎꢌꢏ ꢐ ꢍ ꢉꢂꢑꢂ ꢓꢍ ꢌꢍ ꢃꢑꢒ ꢊꢔꢕ ꢈꢌꢑ ꢏꢋ ꢌꢍ ꢖꢍꢊ
ꢗꢏ ꢑ ꢘ ꢙ ꢎꢓꢑꢂꢑ ꢍ ꢒꢈꢑ ꢋꢈ ꢑꢓ
SCAS049C − MARCH 1989 − REVISED MAY 2004
logic diagram (positive logic)
10
OE
1
A/B
20
1A
2
1Y
2Y
3Y
4Y
19
1B
18
2A
3
8
9
17
2B
14
3A
13
3B
12
4A
11
4B
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
+ 0.5 V
+ 0.5 V
I
CC
CC
Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
O
Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
IK
I
I
CC
Output clamp current, I
(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Continuous current through V
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA
Package thermal impedance, θ (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
JA
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
stg
†
Stresses beyond those listed under “absolute maximum ratings” 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.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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ꢗ ꢏꢑ ꢘ ꢙ ꢎꢓꢑꢂꢑ ꢍ ꢒ ꢈꢑ ꢋꢈ ꢑꢓ
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SCAS049C − MARCH 1989 − REVISED MAY 2004
recommended operating conditions (see Note 3)
MIN NOM
MAX
UNIT
V
Supply voltage
3
2.1
5
5.5
V
CC
IH
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 3 V
= 4.5 V
= 5.5 V
= 3 V
3.15
3.85
V
High-level input voltage
V
V
0.9
1.35
1.65
= 4.5 V
= 5.5 V
V
Low-level input voltage
IL
V
V
Input voltage
0
0
V
V
V
I
CC
Output voltage
V
CC
−4
O
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 3 V
= 4.5 V
= 5.5 V
= 3 V
−24
−24
12
I
High-level output current
Low-level output current
mA
mA
OH
= 4.5 V
= 5.5 V
24
I
OL
24
Dt/Dv
Input transition rise or fall rate
Operating free-air temperature
10
ns/V
T
A
−40
85
°C
NOTE 3: All unused inputs of the device must be held at V
or GND to ensure proper device operation. Refer to the TI application report,
CC
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
PARAMETER
TEST CONDITIONS
V
MIN
MAX
UNIT
CC
MIN
2.9
TYP
MAX
3 V
2.9
4.4
4.5 V
5.5 V
3 V
4.4
I
I
= −50 mA
OH
5.4
5.4
= −4 mA
2.58
3.94
4.94
2.48
3.8
V
OH
V
OH
4.5 V
5.5 V
5.5 V
3 V
I
I
= −24 mA
= −75 mA
OH
4.8
†
3.85
OH
0.1
0.1
0.1
0.1
0.1
0.44
0.44
0.44
1.65
5
4.5 V
5.5 V
3 V
I
I
= 50 mA
OL
0.1
= 12 mA
= 24 mA
0.36
0.36
0.36
V
OL
V
OL
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5 V
I
I
OL
†
= 75 mA
OL
I
I
I
V
= V or GND
0.5
0.1
8
mA
mA
mA
pF
pF
OZ
O
CC
V = V
or GND
or GND,
or GND
1
I
I
CC
CC
CC
V = V
I = 0
O
80
CC
I
C
C
V = V
3.5
8
i
I
V
= V
O CC
or GND
5.5 V
o
†
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀꢁ ꢂꢃ ꢄꢄ ꢅꢆ ꢀ
ꢇꢈ ꢂ ꢉꢊ ꢈ ꢋꢌ ꢍ ꢅ ꢎꢌ ꢏ ꢐꢍ ꢑ ꢒ ꢄ ꢎꢌꢏ ꢐ ꢍ ꢉꢂꢑꢂ ꢓꢍ ꢌꢍ ꢃꢑꢒ ꢊꢔꢕ ꢈꢌꢑ ꢏꢋ ꢌꢍ ꢖꢍꢊ
ꢗꢏ ꢑ ꢘ ꢙ ꢎꢓꢑꢂꢑ ꢍ ꢒꢈꢑ ꢋꢈ ꢑꢓ
SCAS049C − MARCH 1989 − REVISED MAY 2004
switching characteristics over recommended operating free-air temperature range,
= 3.3 V 0.3 V (unless otherwise noted) (see Figure 1)
V
CC
T
A
= 25°C
TYP
5.6
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
MIN
MAX
UNIT
ns
MIN
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
MAX
8.1
9
t
t
t
t
t
t
t
t
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
8.9
10.1
10.2
11.2
9.1
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
A or B
A/B
Y
6.2
6.1
9.2
10
Any Y
Any Y
Any Y
ns
6.6
5.6
8.2
10.4
7.6
8.8
ns
OE
7.5
11.8
8.3
5.6
ns
OE
6.2
9.6
switching characteristics, over recommended operating free-air temperature range,
= 5 V 0.5 V (unless otherwise noted) (see Figure 1)
V
CC
T
A
= 25°C
TYP
3.6
4.1
4
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
MIN
MAX
UNIT
ns
MIN
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
MAX
5.8
6.5
6.5
7.1
5.9
7.6
6.4
6.9
t
t
t
t
t
t
t
t
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
6.4
7.2
7.2
7.9
6.5
8.6
7.6
7.6
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
A or B
A/B
Y
Any Y
Any Y
Any Y
ns
4.4
3.8
5
ns
OE
4.5
4.8
ns
OE
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
= 50 pF, f = 1 MHz
L
TYP
37
UNIT
Outputs enabled
Outputs disabled
C
Power dissipation capacitance
C
pF
pd
11
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀꢁ ꢂꢃ ꢄꢄꢅ ꢆꢀ
ꢇ ꢈꢂꢉ ꢊ ꢈꢋꢌ ꢍ ꢅ ꢎꢌ ꢏꢐꢍ ꢑ ꢒ ꢄ ꢎꢌ ꢏꢐꢍ ꢉꢂꢑꢂ ꢓꢍ ꢌꢍ ꢃꢑꢒ ꢊꢔꢕ ꢈꢌꢑꢏ ꢋ ꢌꢍ ꢖꢍ ꢊ
ꢗ ꢏꢑ ꢘ ꢙ ꢎꢓꢑꢂꢑ ꢍ ꢒ ꢈꢑ ꢋꢈ ꢑꢓ
SCAS049C − MARCH 1989 − REVISED MAY 2004
PARAMETER MEASUREMENT INFORMATION
2 × V
CC
TEST
S1
S1
t
/t
Open
PLH PHL
/t
500 Ω
Open
GND
From Output
Under Test
t
2 × V
CC
GND
PLZ PZL
t
/t
PHZ PZH
C
= 50 pF
L
500 Ω
(see Note A)
LOAD CIRCUIT
50%
Output
Control
(low-level
enabling)
V
V
CC
CC
50%
50%
50%
0 V
Input
t
0 V
t
PZL
t
PHL
PLH
t
PLZ
Output
Waveform 1
V
OH
[ V
CC
50% V
50% V
In-Phase
Output
CC
50% V
CC
V
CC
20% V
S1 at 2 × V
(see Note B)
CC
CC
V
OL
OL
t
PHZ
t
PLH
t
t
PHL
PZH
Output
Waveform 2
S1 at GND
V
V
OH
OH
50% V
CC
Out-of-Phase
Output
80% V
CC
50% V
CC
50% V
CC
[ 0 V
V
OL
(see Note B)
VOLTAGE WAVEFORMS
includes probe and jig capacitance.
VOLTAGE WAVEFORMS
NOTES: A.
C
L
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z = 50 Ω, t = 3 ns, t = 3 ns.
O
r
f
D. The outputs are measured one at a time, with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
6-Dec-2006
PACKAGING INFORMATION
Orderable Device
74AC11257DBR
74AC11257DBRE4
74AC11257DW
Status (1)
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
Drawing
SSOP
DB
20
20
20
20
20
20
20
20
20
20
20
20
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SSOP
SOIC
DB
DW
DW
DW
DW
N
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
25 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
74AC11257DWE4
74AC11257DWR
74AC11257DWRE4
74AC11257N
SOIC
25 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SOIC
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
SOIC
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
PDIP
20
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
74AC11257NE4
74AC11257PW
PDIP
N
20
Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type
TSSOP
TSSOP
TSSOP
TSSOP
PW
PW
PW
PW
70 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
74AC11257PWE4
74AC11257PWR
74AC11257PWRE4
70 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
6-Dec-2006
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 2
MECHANICAL DATA
MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001
DB (R-PDSO-G**)
PLASTIC SMALL-OUTLINE
28 PINS SHOWN
0,38
0,22
0,65
28
M
0,15
15
0,25
0,09
5,60
5,00
8,20
7,40
Gage Plane
1
14
0,25
A
0°–ā8°
0,95
0,55
Seating Plane
0,10
2,00 MAX
0,05 MIN
PINS **
14
16
20
24
28
30
38
DIM
6,50
5,90
6,50
5,90
7,50
8,50
7,90
10,50
9,90
10,50 12,90
A MAX
A MIN
6,90
9,90
12,30
4040065 /E 12/01
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-150
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
M
0,10
0,65
14
8
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
0,25
1
7
0°–8°
A
0,75
0,50
Seating Plane
0,10
0,15
0,05
1,20 MAX
PINS **
8
14
16
20
24
28
DIM
3,10
2,90
5,10
4,90
5,10
4,90
6,60
6,40
7,90
9,80
9,60
A MAX
A MIN
7,70
4040064/F 01/97
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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