TI CD54HC157F3A

[ /Title
(CD74H
C157,
CD74H
CT157,
CD74H
C158,
CD74H
CT158)
/Subject
(High
Speed
The CD54HC158 and
CD74HC158 are obsolete and
no longer are supplied.
CD54/74HC157, CD54/74HCT157,
CD54/74HC158, CD54/74HCT158
Data sheet acquired from Harris Semiconductor
SCHS153C
High-Speed CMOS Logic
Quad 2-Input Multiplexers
September 1997 - Revised October 2003
Features
Description
• Common Select Inputs
The ’HC157, ’HCT157, ’HC158, and ’HCT158 are quad 2input multiplexers which select four bits of data from two
sources under the control of a common Select input (S). The
Enable input (E) is active Low. When (E) is High, all of the
outputs in the 158, the inverting type, (1Y-4Y) are forced
High and in the 157, the non-inverting type, all of the outputs
(1Y-4Y) are forced Low, regardless of all other input
conditions.
• Separate Enable Inputs
• Buffered inputs and Outputs
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
Moving data from two groups of registers to four common
output buses is a common use of these devices. The state of
the Select input determines the particular register from
which the data comes. They can also be used as function
generators.
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30%of VCC at
VCC = 5V
Ordering Information
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH
Pinout
CD54HC157, CD54HCT157, CD54HC158, CD54HCT158
(CERDIP)
CD74HC157, CD74HCT157, CD74HC158
(PDIP, SOIC)
CD74HCT158
(PDIP)
TOP VIEW
S 1
16 VCC
1I0 2
15 E
1I1 3
14 4I0
1Y 4
13 4I1
2I0 5
12 4Y
2I1 6
11 3I0
2Y 7
10 3I1
GND 8
9 3Y
TEMP. RANGE
(oC)
PACKAGE
CD54HC157F3A
-55 to 125
16 Ld CERDIP
CD54HCT157F3A
-55 to 125
16 Ld CERDIP
CD54HCT158F3A
-55 to 125
16 Ld CERDIP
CD74HC157E
-55 to 125
16 Ld PDIP
CD74HC157M
-55 to 125
16 Ld SOIC
CD74HC157MT
-55 to 125
16 Ld SOIC
CD74HC157M96
-55 to 125
16 Ld SOIC
CD74HCT157E
-55 to 125
16 Ld PDIP
CD74HCT157M
-55 to 125
16 Ld SOIC
CD74HCT157MT
-55 to 125
16 Ld SOIC
CD74HCT157M96
-55 to 125
16 Ld SOIC
CD74HCT158E
-55 to 125
16 Ld PDIP
PART NUMBER
NOTE: When ordering, use the entire part number. The suffix 96
denotes tape and reel. The suffix T denotes a small-quantity reel of
250.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© 2003, Texas Instruments Incorporated
1
CD54/74HC157, CD54/74HCT157, CD54/74HC158, CD54/74HCT158
Functional Diagram
HC/HCT HC/HCT
157
158
1I0
1I1
2I0
2I1
3I0
3I1
4I0
4I1
2
4
3
5
1Y
1Y
2Y
2Y
3Y
3Y
4Y
4Y
7
6
11
9
10
14
12
13
1
15
S
E
TRUTH TABLE
OUTPUT
ENABLE
SELECT
INPUT
E
S
I0
H
X
L
DATA INPUTS
157
158
I1
Y
Y
X
X
L
H
L
L
X
L
H
L
L
H
X
H
L
L
H
X
L
L
H
L
H
X
H
H
L
H = High Voltage Level, L = Low Voltage Level, X = Don’t Care
2
CD54/74HC157, CD54/74HCT157, CD54/74HC158, CD54/74HCT158
Absolute Maximum Ratings
Thermal Information
DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA
DC VCC or Ground Current, ICC or IGND . . . . . . . . . . . . . . . . . .±50mA
Thermal Resistance (Typical, Note 1)
θJA (oC/W)
E (PDIP) Package . . . . . . . . . . . . . . . . . . . . . . . . . .
67
M (SOIC) Package. . . . . . . . . . . . . . . . . . . . . . . . . .
73
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)
Operating Conditions
Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
Supply Voltage Range, VCC
HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V
HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC
Input Rise and Fall Time
2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max)
4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max)
6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max)
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. The package thermal impedance is calculated in accordance with JESD 51-7.
DC Electrical Specifications
TEST
CONDITIONS
PARAMETER
25oC
-40oC TO 85oC -55oC TO 125oC
SYMBOL
VI (V)
IO (mA)
VCC
(V)
VIH
-
-
2
1.5
-
-
1.5
4.5
3.15
-
-
3.15
-
3.15
-
V
6
4.2
-
-
4.2
-
4.2
-
V
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
-
1.5
-
V
HC TYPES
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
CMOS Loads
VIL
VOH
-
VIH or VIL
High Level Output
Voltage
TTL Loads
Low Level Output
Voltage
CMOS Loads
VOL
VIH or VIL
Low Level Output
Voltage
TTL Loads
Input Leakage
Current
Quiescent Device
Current
-
2
-
-
0.5
-
0.5
-
0.5
V
4.5
-
-
1.35
-
1.35
-
1.35
V
6
-
-
1.8
-
1.8
-
1.8
V
-0.02
2
1.9
-
-
1.9
-
1.9
-
V
-0.02
4.5
4.4
-
-
4.4
-
4.4
-
V
-0.02
6
5.9
-
-
5.9
-
5.9
-
V
-
-
-
-
-
-
-
-
-
V
-4
4.5
3.98
-
-
3.84
-
3.7
-
V
-5.2
6
5.48
-
-
5.34
-
5.2
-
V
0.02
2
-
-
0.1
-
0.1
-
0.1
V
0.02
4.5
-
-
0.1
-
0.1
-
0.1
V
0.02
6
-
-
0.1
-
0.1
-
0.1
V
-
-
-
-
-
-
-
-
-
V
4
4.5
-
-
0.26
-
0.33
-
0.4
V
5.2
6
-
-
0.26
-
0.33
-
0.4
V
II
VCC or
GND
-
6
-
-
±0.1
-
±1
-
±1
µA
ICC
VCC or
GND
0
6
-
-
8
-
80
-
160
µA
3
CD54/74HC157, CD54/74HCT157, CD54/74HC158, CD54/74HCT158
DC Electrical Specifications
(Continued)
TEST
CONDITIONS
SYMBOL
VI (V)
IO (mA)
High Level Input
Voltage
VIH
-
-
Low Level Input
Voltage
VIL
-
High Level Output
Voltage
CMOS Loads
VOH
VIH or VIL
PARAMETER
VCC
(V)
25oC
-40oC TO 85oC -55oC TO 125oC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
4.5 to
5.5
2
-
-
2
-
2
-
V
-
4.5 to
5.5
-
-
0.8
-
0.8
-
0.8
V
-0.02
4.5
4.4
-
-
4.4
-
4.4
-
V
-4
4.5
3.98
-
-
3.84
-
3.7
-
V
0.02
4.5
-
-
0.1
-
0.1
-
0.1
V
4
4.5
-
-
0.26
-
0.33
-
0.4
V
±0.1
-
±1
-
±1
µA
HCT TYPES
High Level Output
Voltage
TTL Loads
Low Level Output
Voltage
CMOS Loads
VOL
VIH or VIL
Low Level Output
Voltage
TTL Loads
Input Leakage
Current
Quiescent Device
Current
Additional Quiescent
Device Current Per
Input Pin: 1 Unit Load
II
VCC and
GND
0
5.5
-
ICC
VCC or
GND
0
5.5
-
-
8
-
80
-
160
µA
∆ICC
(Note 2)
VCC
-2.1
-
4.5 to
5.5
-
100
360
-
450
-
490
µA
NOTE:
2. For dual-supply systems theoretical worst case (VI = 2.4V, VCC = 5.5V) specification is 1.8mA.
HCT Input Loading Table
UNIT LOADS
INPUT
HCT157
HCT158
I (All)
0.95
0.4
E
0.6
0.6
S
3
2.8
NOTE: Unit Load is ∆ICC limit specified in DC Electrical Table, e.g.,
360µA max at 25oC.
Switching Specifications Input tr, tf = 6ns
PARAMETER
SYMBOL
TEST
CONDITIONS
25oC
-40oC TO 85oC
-55oC TO 125oC
VCC
(V)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
2
-
-
125
-
155
-
190
ns
4.5
-
-
25
-
31
-
38
ns
5
-
10
-
-
-
-
-
ns
-
12
-
-
-
-
-
ns
-
-
21
-
26
-
32
ns
HC/HCT157 TYPES
Propagation Delay (Figure 1) tPLH, tPHL CL = 50pF
Data to Output
HC157
CL =15pF
HCT157
CL = 50pF
6
4
CD54/74HC157, CD54/74HCT157, CD54/74HC158, CD54/74HCT158
Switching Specifications Input tr, tf = 6ns
PARAMETER
SYMBOL
Enable to Output
(Continued)
TEST
CONDITIONS
tPLH, tPHL CL = 50pF
HC157
CL =15pF
25oC
Select to Output
tPLH, tPHL CL = 50pF
-55oC TO 125oC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
2
-
-
135
-
170
-
205
ns
4.5
-
-
27
-
34
-
41
ns
5
-
11
-
-
-
-
-
ns
-
12
-
-
-
-
-
ns
-
-
23
-
29
-
35
ns
HCT157
CL = 50pF
-40oC TO 85oC
VCC
(V)
6
2
-
-
145
-
180
-
220
ns
4.5
-
-
29
-
36
-
44
ns
5
-
12
-
-
-
-
-
ns
-
15
-
-
-
-
-
ns
-
-
25
-
31
-
38
ns
HC157
-
62
-
-
-
-
-
pF
HCT157
-
70
-
-
-
-
-
pF
2
-
-
140
-
175
-
210
ns
4.5
-
-
28
-
35
-
42
CL =15pF
5
-
11
-
-
-
-
-
ns
-
13
-
-
-
-
-
ns
CL = 50pF
6
-
-
24
-
30
-
36
ns
tPLH, tPHL CL = 50pF
2
-
-
160
-
200
-
240
ns
4.5
-
-
32
-
40
-
48
ns
HC157
CL =15pF
HCT157
CL = 50pF
Power Dissipation
Capacitance (Notes 3, 4)
CPD
-
6
5
HC/HCT158 TYPES
Data to Output
tPLH, tPHL CL = 50pF
HC158
HCT 158
Enable to Output
HC158
CL =15pF
5
HCT 158
Select to Output
-
-
-
-
-
ns
-
-
-
-
-
ns
6
-
-
27
-
34
-
41
ns
tPLH, tPHL CL = 50pF
2
-
-
150
-
190
-
225
ns
4.5
-
-
30
-
38
-
45
ns
5
-
12
-
-
-
-
-
ns
-
14
-
-
-
-
-
ns
6
-
-
26
-
33
-
38
ns
CL =15pF
HCT 158
CL = 50pF
2
-
-
75
-
95
-
110
ns
4.5
-
-
15
-
19
-
22
ns
6
-
-
13
-
16
-
19
ns
HC158
-
35
-
-
-
-
-
pF
HCT 158
-
35
-
-
-
-
-
pF
-
-
10
-
10
-
10
pF
Power Dissipation
Capacitance (Notes 3, 4)
Input Capacitance
13
15
CL = 50pF
HC158
Output Transition Time
-
tTLH, tTHL
CPD
CIN
CL = 50pF
-
CL = 50pF
5
-
NOTES:
3. CPD is used to determine the dynamic power consumption, per multiplexer.
4. PD = VCC2 fi (CPD + CL) where fi = input frequency, CL = output load capacitance, VCC = supply voltage.
5
CD54/74HC157, CD54/74HCT157, CD54/74HC158, CD54/74HCT158
Test Circuits and Waveforms
tr = 6ns
tf = 6ns
VCC
90%
50%
10%
INPUT
GND
tTLH
GND
tTHL
90%
50%
10%
INVERTING
OUTPUT
3V
2.7V
1.3V
0.3V
INPUT
tTHL
tPHL
tf = 6ns
tr = 6ns
tTLH
90%
1.3V
10%
INVERTING
OUTPUT
tPHL
tPLH
FIGURE 1. HC AND HCU TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC
tPLH
FIGURE 2. HCT TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
6
PACKAGE OPTION ADDENDUM
www.ti.com
26-Jul-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
5962-9070201MEA
ACTIVE
CDIP
J
16
1
TBD
Call TI
Level-NC-NC-NC
5962-9070301MEA
ACTIVE
CDIP
J
16
1
TBD
Call TI
Level-NC-NC-NC
Lead/Ball Finish
MSL Peak Temp (3)
CD54HC157F
ACTIVE
CDIP
J
16
1
TBD
Call TI
Level-NC-NC-NC
CD54HC157F3A
ACTIVE
CDIP
J
16
1
TBD
Call TI
Level-NC-NC-NC
CD54HCT157F3A
ACTIVE
CDIP
J
16
1
TBD
Call TI
Level-NC-NC-NC
CD54HCT158F3A
ACTIVE
CDIP
J
16
1
TBD
Call TI
Level-NC-NC-NC
CD74HC157E
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
Level-NC-NC-NC
CD74HC157M
ACTIVE
SOIC
D
16
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HC157M96
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HC157M96E4
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HC157ME4
ACTIVE
SOIC
D
16
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HC157MT
ACTIVE
SOIC
D
16
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HC157MTE4
ACTIVE
SOIC
D
16
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HC157SM
OBSOLETE
SSOP
DB
16
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HCT157E
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
Level-NC-NC-NC
CD74HCT157EE4
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
Level-NC-NC-NC
CD74HCT157M
ACTIVE
SOIC
D
16
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HCT157M96
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HCT157M96E4
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HCT157ME4
ACTIVE
SOIC
D
16
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HCT157MT
ACTIVE
SOIC
D
16
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HCT157MTE4
ACTIVE
SOIC
D
16
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
CD74HCT158E
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
Level-NC-NC-NC
(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)
Addendum-Page 1
or
Green
(RoHS
&
no
Sb/Br)
-
please
check
PACKAGE OPTION ADDENDUM
www.ti.com
26-Jul-2005
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.
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.
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
0,15 M
15
0,25
0,09
8,20
7,40
5,60
5,00
Gage Plane
1
14
0,25
A
0°–ā8°
0,95
0,55
Seating Plane
2,00 MAX
0,10
0,05 MIN
PINS **
14
16
20
24
28
30
38
A MAX
6,50
6,50
7,50
8,50
10,50
10,50
12,90
A MIN
5,90
5,90
6,90
7,90
9,90
9,90
12,30
DIM
4040065 /E 12/01
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion not to exceed 0,15.
Falls within JEDEC MO-150
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty. Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. To minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process
in which TI products or services are used. Information published by TI regarding third-party products or services
does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.
Use of such information may require a license from a third party under the patents or other intellectual property
of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction
of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for
such altered documentation.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that
product or service voids all express and any implied warranties for the associated TI product or service and
is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.
Following are URLs where you can obtain information on other Texas Instruments products and application
solutions:
Products
Applications
Amplifiers
amplifier.ti.com
Audio
www.ti.com/audio
Data Converters
dataconverter.ti.com
Automotive
www.ti.com/automotive
DSP
dsp.ti.com
Broadband
www.ti.com/broadband
Interface
interface.ti.com
Digital Control
www.ti.com/digitalcontrol
Logic
logic.ti.com
Military
www.ti.com/military
Power Mgmt
power.ti.com
Optical Networking
www.ti.com/opticalnetwork
Microcontrollers
microcontroller.ti.com
Security
www.ti.com/security
Telephony
www.ti.com/telephony
Video & Imaging
www.ti.com/video
Wireless
www.ti.com/wireless
Mailing Address:
Texas Instruments
Post Office Box 655303 Dallas, Texas 75265
Copyright  2005, Texas Instruments Incorporated