74AC253_07 [FAIRCHILD]
Dual 4-Input Multiplexer with 3-STATE Outputs; 双路4输入多路复用器与3态输出
| 型号： | 74AC253_07 |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Dual 4-Input Multiplexer with 3-STATE Outputs |
| 文件： | 总12页 (文件大小：321K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
April 2007
74AC253, 74ACT253
tm
Dual 4-Input Multiplexer with 3-STATE Outputs
Features
General Description
■ I and I reduced by 50%
The AC/ACT253 is a dual 4-input multiplexer with
3-STATE outputs. It can select two bits of data from four
sources using common select inputs. The outputs may
be individually switched to a high impedance state with a
HIGH on the respective Output Enable (OE) inputs,
allowing the outputs to interface directly with bus
oriented systems.
CC
OZ
■ Multifunction capability
■ Non inverting 3-STATE outputs
■ Outputs source/sink 24mA
■ ACT253 has TTL-compatible inputs
Ordering Information
Order Number
Package
Number
Package Description
74AC253SC
74AC253SJ
M16A
M16D
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74AC253PC
74ACT253SC
74ACT253SJ
74ACT253MTC
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
M16A
M16D
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153,
4.4mm Wide
Device also available Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
Connection Diagram
Pin Descriptions
Pin Names
Description
I
I
–I
Side A Data Inputs
0a 3a
–I
Side B Data Inputs
0b 3b
S , S
Common Select Inputs
Side A Output Enable Input
Side B Output Enable Input
3-STATE Outputs
0
1
OE
OE
a
b
Z , Z
a
b
FACT™ is a trademark of Fairchild Semiconductor Corporation.
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
Logic Diagram
Functional Description
The AC/ACT253 contains two identical 4-input multiplex-
ers with 3-STATE outputs. They select two bits from four
sources selected by common Select inputs (S , S ). The
0
1
4-input multiplexers have individual Output Enable (OE ,
a
OE ) inputs which, when HIGH, force the outputs to a
b
high impedance (High Z) state. This device is the logic
implementation of a 2-pole, 4-position switch, where the
position of the switch is determined by the logic levels
supplied to the two select inputs. The logic equations for
the outputs are shown:
Z = OE • (I • S • S + I • S • S +
a
a
0a
1
0
1a
1
0
IEEE/IEC
I
• S • S + I • S • S )
2a
1 0 3a 1 0
Z = OE • (I • S • S + I • S • S +
b
b
0b
1
0
1b
1
0
I
• S • S + I • S • S )
2b
1 0 3b 1 0
If the outputs of 3-STATE devices are tied together, all
but one device must be in the high impedance state to
avoid high currents that would exceed the maximum
ratings. Designers should ensure that Output Enable
signals to 3-STATE devices whose outputs are tied
together are designed so that there is no overlap.
Truth Table
Select Inputs
Data Inputs
Output Enable
Outputs
S
S
I
I
I
I
3
OE
H
L
Z
Z
L
0
1
0
1
2
X
X
X
L
X
X
X
L
X
X
X
X
X
L
X
X
X
X
X
X
X
L
L
L
L
L
H
X
X
X
X
X
X
L
H
L
H
H
L
L
L
L
H
X
X
X
X
L
H
L
H
H
H
H
L
L
H
X
X
L
H
L
H
H
L
H
L
H
Address Inputs S and S are common to both sections.
0
1
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
2
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to
estimate propagation delays.
Figure 1.
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
3
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Rating
V
I
Supply Voltage
–0.5V to +7.0V
CC
IK
DC Input Diode Current
V = –0.5V
–20mA
+20mA
I
V = V + 0.5V
I
CC
V
DC Input Voltage
–0.5V to V + 0.5V
I
CC
I
DC Output Diode Current
OK
V
= –0.5V
–20mA
+20mA
O
V
= V + 0.5V
O
CC
V
DC Output Voltage
DC Output Source or Sink Current
–0.5V to V + 0.5V
O
CC
I
50mA
50mA
O
I
or I
DC V or Ground Current per Output Pin
CC
GND
STG
CC
T
Storage Temperature
Junction Temperature
–65°C to +150°C
140°C
T
J
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol
Parameter
Rating
V
Supply Voltage
AC
CC
2.0V to 6.0V
4.5V to 5.5V
ACT
V
Input Voltage
Output Voltage
Operating Temperature
0V to V
0V to V
I
CC
CC
V
O
T
–40°C to +85°C
125mV/ns
A
∆V / ∆t
Minimum Input Edge Rate, AC Devices:
from 30% to 70% of V , V @ 3.3V, 4.5V, 5.5V
V
IN
CC CC
∆V / ∆t
Minimum Input Edge Rate, ACT Devices:
from 0.8V to 2.0V, V @ 4.5V, 5.5V
125mV/ns
V
IN
CC
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
4
DC Electrical Characteristics for AC
T = +25°C
T = –40°C to +85°C
A
A
V
CC
Symbol
Parameter
(V)
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
Conditions
Typ.
Guaranteed Limits
Units
V
Minimum HIGH Level
Input Voltage
V
= 0.1V
CC
1.5
2.1
3.15
3.85
0.9
2.1
3.15
3.85
0.9
V
IH
OUT
or V – 0.1V
2.25
2.75
1.5
V
Maximum LOW Level
Input Voltage
V
= 0.1V
CC
V
V
IL
OUT
or V – 0.1V
2.25
2.75
2.99
4.49
5.49
1.35
1.65
2.9
1.35
1.65
2.9
V
Minimum HIGH Level
Output Voltage
I
= –50µA
OH
OUT
4.4
4.4
5.4
5.4
V
I
= V or V :
IN
IL
IH
3.0
4.5
5.5
3.0
4.5
5.5
= –12mA
2.56
3.86
4.86
0.1
2.46
3.76
4.76
0.1
OH
OH
OH
I
I
I
= –24mA
= –24mA
= 50µA
(1)
V
Maximum LOW Level
Output Voltage
0.002
0.001
0.001
V
OL
OUT
0.1
0.1
0.1
0.1
V
I
= V or V :
IN
IL
IH
3.0
4.5
5.5
= 12mA
0.36
0.36
0.36
0.1
0.44
0.44
0.44
1.0
OL
OL
OL
I
I
= 24mA
= 24mA
(1)
(3)
I
Maximum Input
Leakage Current
5.5 V = V , GND
µA
µA
IN
I
CC
I
Maximum 3-STATE
Current
5.5 V (OE) = V , V ;
0.25
2.5
OZ
I
IL IH
V = V , GND;
I
CC
V = V , GND
O
CC
I
I
Minimum Dynamic
Output Current
5.5
5.5
5.5
V
V
V
= 1.65V Max.
75
mA
mA
µA
OLD
OLD
OHD
(2)
= 3.85V Min.
–75
40.0
OHD
(3)
I
Maximum Quiescent
Supply Current
= V or GND
IN CC
4.0
CC
Notes:
1. All outputs loaded; thresholds on input associated with output under test.
2. Maximum test duration 2.0ms, one output loaded at a time.
3. I and I @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V V .
CC
IN
CC
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
5
DC Electrical Characteristics for ACT
T = +25°C
T = –40°C to +85°C
A
A
V
CC
Symbol
Parameter
(V)
4.5
5.5
4.5
5.5
4.5
5.5
Conditions
Typ.
Guaranteed Limits
Units
V
Minimum HIGH Level
Input Voltage
V
V
= 0.1V or
OUT
1.5
1.5
2.0
2.0
0.8
0.8
4.4
5.4
2.0
2.0
0.8
0.8
4.4
5.4
V
IH
– 0.1V
CC
V
Maximum LOW Level
Input Voltage
V
V
= 0.1V or
OUT
1.5
V
V
IL
– 0.1V
CC
1.5
V
Minimum HIGH Level
Output Voltage
I
= –50µA
4.49
5.49
OH
OUT
V
I
= V or V :
IN
IL
IH
4.5
5.5
4.5
5.5
= –24mA
3.86
4.86
0.1
3.76
4.76
0.1
OH
OH
(4)
I
I
= –24mA
= 50µA
V
Maximum LOW Level
Output Voltage
0.001
0.001
V
OL
OUT
0.1
0.1
V
I
= V or V :
IL IH
IN
4.5
5.5
= 24mA
= 24mA
0.36
0.36
0.1
0.44
0.44
1.0
OL
(4)
I
OL
I
Maximum Input
Leakage Current
5.5 V = V , GND
µA
µA
IN
I
CC
I
Maximum 3-STATE
Current
5.5 V = V , V ;
0.25
2.5
OZ
I
IL IH
V = V , GND
O
CC
I
I
I
Maximum I /Input
5.5 V = V – 2.1V
0.6
1.5
75
mA
mA
mA
µA
CCT
CC
I
CC
Minimum Dynamic
5.5
5.5
5.5
V
V
V
= 1.65V Max.
OLD
OLD
OHD
(5)
Output Current
= 3.85V Min.
–75
40.0
OHD
I
Maximum Quiescent
Supply Current
= V or GND
IN CC
4.0
CC
Notes:
4. All outputs loaded; thresholds on input associated with output under test.
5. Maximum test duration 2.0ms, one output loaded at a time.
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
6
AC Electrical Characteristics for AC
T = +25°C
L
T = –40°C to +85°C,
A
A
C = 50pF
C = 50pF
L
(6)
Symbol
Parameter
V
(V)
Min. Typ. Max.
Min
2.0
1.5
2.0
1.5
1.5
1.5
1.5
1.5
1.0
1.0
1.0
1.0
1.5
1.5
1.0
1.0
Max
17.5
12.5
18.0
13.0
17.0
11.5
15.0
11.0
8.5
Units
CC
t
t
t
t
Propagation Delay,
3.3
2.0
2.0
2.5
2.0
1.5
1.5
2.0
1.5
1.5
1.5
1.5
1.5
2.0
2.0
1.5
1.5
8.5
6.5
9.5
7.0
7.0
5.5
7.5
5.5
4.5
3.5
5.0
3.5
5.5
5.0
5.0
4.0
15.5
11.0
16.0
11.5
14.5
10.0
13.0
9.5
ns
PLH
PHL
PLH
PHL
PZH
S to Z
n
n
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
Propagation Delay,
S to Z
ns
ns
ns
ns
ns
ns
ns
n
n
Propagation Delay,
I to Z
n
n
Propagation Delay,
I to Z
n
n
t
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
8.0
6.0
6.5
t
8.0
9.0
PZL
6.0
7.0
t
9.5
10.0
8.5
PHZ
8.0
t
8.0
9.0
PLZ
7.0
7.5
Note:
6. Voltage range 3.3 is 3.3V 0.3V. Voltage range 5.0 is 5.0V 0.5V.
AC Electrical Characteristics for ACT
T = +25°C,
T = –40°C to +85°C,
A
A
C = 50pF
C = 50pF
L
L
(7)
Symbol
Parameter
V
(V)
Min. Typ. Max.
Min.
2.0
2.5
2.0
3.0
1.5
1.5
2.5
2.0
Max.
13.0
14.5
11.0
12.5
8.5
Units
ns
CC
t
t
t
t
Propagation Delay, S to Z
5.0
2.0
3.0
2.5
3.5
2.0
2.0
3.0
2.5
7.0
7.5
5.5
6.5
4.5
5.0
6.0
4.5
11.5
13.0
10.0
11.0
7.5
PLH
PHL
PLH
PHL
PZH
n
n
Propagation Delay, S to Z
5.0
5.0
5.0
5.0
5.0
5.0
5.0
ns
n
n
Propagation Delay, I to Z
ns
n
n
Propagation Delay, I to Z
ns
n
n
t
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
ns
t
8.0
9.0
ns
PZL
PHZ
t
9.5
10.0
8.5
ns
t
7.5
ns
PLZ
Note:
7. Voltage range 5.0 is 5.0V 0.5V.
Capacitance
Symbol
Parameter
Conditions
Typ.
4.5
Units
C
Input Capacitance
Power Dissipation Capacitance
V
= OPEN
= 5.0V
pF
pF
IN
CC
C
V
50.0
PD
CC
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
7
Physical Dimensions
Dimensions are in millimeters unless otherwise noted.
Figure 2. 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Package Number M16A
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
8
Physical Dimensions (Continued)
Dimensions are in millimeters unless otherwise noted.
Figure 3. 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M16D
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
9
Physical Dimensions (Continued)
Dimensions are in millimeters unless otherwise noted.
5.00 0.10
4.55
5.90
4.45 7.35
0.65
4.4 0.1
1.45
5.00
0.11
12°
MTC16rev4
Figure 4. 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC16
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
10
Physical Dimensions (Continued)
Dimensions are in inches (millimeters) unless otherwise noted.
Figure 5. 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300”Wide
Package Number N16E
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
11
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an
exhaustive list of all such trademarks.
ACEx®
TinyLogic®
TINYOPTO¥
TinyPower¥
TinyWire¥
TruTranslation¥
PSerDes¥
UHC®
UniFET¥
VCX¥
Wire¥
HiSeC¥
i-Lo¥
Programmable Active Droop¥
QFET®
QS¥
QT Optoelectronics¥
Quiet Series¥
RapidConfigure¥
RapidConnect¥
ScalarPump¥
SMART START¥
SPM®
STEALTH™
SuperFET¥
SuperSOT¥-3
SuperSOT¥-6
SuperSOT¥-8
SyncFET™
Across the board. Around the world.¥
ActiveArray¥
Bottomless¥
Build it Now¥
CoolFET¥
ImpliedDisconnect¥
IntelliMAX¥
ISOPLANAR¥
MICROCOUPLER¥
MicroPak¥
MICROWIRE¥
MSX¥
CROSSVOLT¥
CTL™
Current Transfer Logic™
DOME¥
MSXPro¥
OCX¥
E2CMOS¥
EcoSPARK®
EnSigna¥
OCXPro¥
OPTOLOGIC®
OPTOPLANAR®
PACMAN¥
POP¥
FACT Quiet Series™
FACT®
FAST®
Power220®
Power247®
PowerEdge¥
PowerSaver¥
PowerTrench®
FASTr¥
TCM¥
The Power Franchise®
™
FPS¥
FRFET®
GlobalOptoisolator¥
GTO¥
TinyBoost¥
TinyBuck¥
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS
HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE
APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER
ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S
WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems 2. A critical component in any component of a life support,
which, (a) are intended for surgical implant into the body or
(b) support or sustain life, and (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in a significant injury of the user.
device, or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification
Product Status
Definition
Advance Information
Formative or In Design
This datasheet contains the design specifications for product
development. Specifications may change in any manner without notice.
Preliminary
First Production
Full Production
Not In Production
This datasheet contains preliminary data; supplementary data will be
published at a later date. Fairchild Semiconductor reserves the right to
make changes at any time without notice to improve design.
No Identification Needed
Obsolete
This datasheet contains final specifications. Fairchild Semiconductor
reserves the right to make changes at any time without notice to improve
design.
This datasheet contains specifications on a product that has been
discontinued by Fairchild Semiconductor. The datasheet is printed for
reference information only.
Rev. I24
©1988 Fairchild Semiconductor Corporation
74AC253, 74ACT253 Rev. 1.5
www.fairchildsemi.com
12
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