74AC11239N [TI]
DUAL 2-LINE TO 4-LINE DECODER/DEMULTIPLEXER; 双2线， 4线译码器/解复用器
| 型号： | 74AC11239N |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | DUAL 2-LINE TO 4-LINE DECODER/DEMULTIPLEXER |
| 文件： | 总7页 (文件大小：117K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74AC11239
DUAL 2–LINE TO 4–LINE DECODER/DEMULTIPLEXER
SCAS072A – JULY 1989 – REVISED APRIL 1993
D OR N PACKAGE
(TOP VIEW)
• Designed Specifically for High-Speed
Memory Decoders and Data Transmission
Systems
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1Y0
1A
1Y1
1Y2
1Y3
GND
2Y0
2Y1
2Y2
2Y3
• Incorporates Two Enable Inputs to Simplify
Cascading and/or Data Reception
1B
• Flow-Through Architecture to Optimize
1G
PCB Layout
V
CC
• Center-Pin V
and GND Configurations to
Minimize High-Speed Switching Noise
CC
2G
2A
2B
• EPIC (Enhanced-Performance Implanted
CMOS) 1- m Process
• 500-mA Typical Latch-Up Immunity
at 125°C
• Package Options Include Plastic Small
Outline Packages, and Standard Plastic
300-mil DIPs
description
The 74AC11239 circuit is designed to be used in high-performance memory-decoding or data- routing
applications requiring very short propagation delay times. In high-performance memory systems, this decoder
can be used to minimize the effects of system decoding. When employed with high-speed memories utilizing
a fast enable circuit, the delay times of this decoder and the enable time of the memory are usually less than
the typical access time of the memory. This means that the effective system delay introduced by the decoder
is negligible.
The 74AC11239 is comprised of two individual two-line to four-line decoders in a single package. Theactive-low
enable input can be used as a data line in demultiplexing applications. These decoders/demultiplexers feature
fully buffered inputs, each of which represents only one normalized load to its driving circuit.
The 74AC11239 is characterized for operation from – 40°C to 85°C.
FUNCTION TABLE
SELECT INPUTS
OUTPUTS
ENABLE INPUT
G
A
X
L
B
X
L
Y0
L
Y1
L
Y2
L
Y3
L
H
L
L
L
L
H
L
L
L
L
H
L
L
H
L
L
L
H
H
L
H
L
L
H
L
L
H
EPIC is a trademark of Texas Instruments Incorporated.
Copyright 1993, Texas Instruments Incorporated
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
74AC11239
DUAL 2–LINE TO 4–LINE DECODER/DEMULTIPLEXER
SCAS072A – JULY 1989 – REVISED APRIL 1993
†
logic symbols (alternatives)
X/Y
DMUX
0
15
14
13
16
1
15
14
13
16
1
1Y0
1Y1
1Y2
1Y3
1Y0
1Y1
1Y2
1Y3
0
1
2
3
0
1
2
3
0
0
1
1A
1B
1G
1A
1B
1G
G
3
1
2
3
2
3
EN
10
9
5
6
7
8
10
9
5
6
7
8
2A
2B
2Y0
2Y1
2Y2
2Y3
2A
2B
2Y0
2Y1
2Y2
2Y3
11
11
2G
2G
†
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
16
1
1Y0
13
Enable 1G
1Y1
2
1Y2
1Y3
15
14
1A
Select Inputs
3
1B
Data Outputs
5
2Y0
2Y1
11
Enable 2G
6
7
2Y2
2Y3
10
9
2A
Select
8
2B
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
74AC11239
DUAL 2–LINE TO 4–LINE DECODER/DEMULTIPLEXER
SCAS072A – JULY 1989 – REVISED APRIL 1993
†
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
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 200 mA
†
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.
NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
recommended operating conditions
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
V
High-level input voltage
= 4.5 V
= 5.5 V
= 3 V
3.15
3.85
V
V
0.9
1.35
1.65
V
IL
Low-level input voltage
= 4.5 V
= 5.5 V
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
I
High-level output current
Low-level output current
= 4.5 V
= 5.5 V
= 3 V
–24
–24
12
mA
mA
OH
I
= 4.5 V
= 5.5 V
24
OL
24
t/ v
Input transition rise or fall rate
Operating free-air temperature
0
10
ns/V
T
– 40
85
°C
A
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
74AC11239
DUAL 2–LINE TO 4–LINE DECODER/DEMULTIPLEXER
SCAS072A – JULY 1989 – REVISED APRIL 1993
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
4.5 V
5.5 V
3 V
2.9
4.4
I
= – 50
A
4.4
OH
5.4
5.4
I
I
= – 4 mA
2.58
3.94
4.94
2.48
3.8
OH
V
OH
V
4.5 V
5.5 V
5.5 V
5.5 V
3 V
= – 24 mA
OH
4.8
I
I
= – 50 mA
= – 75 mA
OH
3.85
OH
0.1
0.1
0.1
0.1
I
= 50
A
4.5 V
5.5 V
3 V
OL
0.1
0.1
I
I
= 12 mA
= 24 mA
0.36
0.36
0.36
0.44
0.44
0.44
OL
V
OL
V
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5 V
OL
I
I
= 50 mA
= 75 mA
OL
1.65
± 1
80
OL
I
I
V = V
or GND
± 0.1
A
A
I
I
CC
CC
CC
V = V
or GND,
or GND
I = 0
O
8
CC
I
C
V = V
3.5
pF
i
I
†
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
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
6.2
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
MIN
MAX
UNIT
ns
MIN
1.5
1.5
1.5
1.5
MAX
8.5
8
t
t
t
t
1.5
1.5
1.5
1.5
9.5
9
PLH
PHL
PLH
PHL
A or B
G
Y
Y
5.6
5.4
7.1
7.3
7.9
8.1
ns
5.7
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
4
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
MIN
MAX
UNIT
ns
MIN
1.5
1.5
1.5
1.5
MAX
6.1
t
t
t
t
1.5
1.5
1.5
1.5
6.7
6.8
5.8
6.2
PLH
PHL
PLH
PHL
A or B
G
Y
Y
3.7
6.1
3.5
5.3
ns
3.9
5.6
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
= 50 pF, f = 1 MHz
L
TYP
UNIT
C
Power dissipation capacitance
C
48
pF
pd
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
74AC11239
DUAL 2–LINE TO 4–LINE DECODER/DEMULTIPLEXER
SCAS072A – JULY 1989 – REVISED APRIL 1993
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
C
= 50 pF
L
500 Ω
(see Note A)
LOAD CIRCUIT
V
0
CC
Input
(see Note B)
50%
50%
t
PLH
t
PHL
V
OH
Output
50%
PROPAGATION DELAY TIMES
50%
V
OL
NOTES: A.C includes probe and jig capacitance.
L
B.Input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z = 50 Ω, t = 3 ns, t = 3 ns.
O
r
f
C.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
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
PACKAGE OPTION ADDENDUM
www.ti.com
24-Jun-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
SOIC
PDIP
Drawing
74AC11239D
74AC11239N
OBSOLETE
OBSOLETE
D
N
16
16
TBD
TBD
Call TI
Call TI
Call TI
Call TI
(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) 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.
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.
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Addendum-Page 1
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