TI SN74ACT374

SN54ACT374, SN74ACT374
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS539F – OCTOBER 1995 – REVISED NOVEMBER 2002
SN54ACT374 . . . J OR W PACKAGE
SN74ACT374 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
4.5-V to 5.5-V VCC Operation
Inputs Accept Voltages to 5.5 V
Max tpd of 10 ns at 5 V
Inputs Are TTL-Voltage Compatible
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
description/ordering information
These 8-bit flip-flops feature 3-state outputs
designed specifically for driving highly capacitive
or relatively low-impedance loads. The devices
are particularly suitable for implementing buffer
registers, I/O ports, bidirectional bus drivers, and
working registers.
The eight flip-flops of the ’ACT374 devices are
D-type edge-triggered flip-flops. On the positive
transition of the clock (CLK) input, the Q outputs
are set to the logic levels set up at the data (D)
inputs.
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
1D
1Q
OE
VCC
SN54ACT374 . . . FK PACKAGE
(TOP VIEW)
A buffered output-enable (OE) input can be used
to place the eight outputs in either a normal logic
state (high or low logic levels) or the
high-impedance state. In the high-impedance
state, the outputs neither load nor drive the bus
lines significantly. The high-impedance state and
the increased drive provide the capability to drive
bus lines in bus-organized systems without need
for interface or pullup components.
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
8D
7D
7Q
6Q
6D
4Q
GND
CLK
5Q
5D
2D
2Q
3Q
3D
4D
8Q
D
D
D
D
OE does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while
the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
PDIP – N
–55°C to 125°C
TOP-SIDE
MARKING
Tube
SN74ACT374N
Tube
SN74ACT374DW
Tape and reel
SN74ACT374DWR
SOP – NS
Tape and reel
SN74ACT374NSR
ACT374
SSOP – DB
Tape and reel
SN74ACT374DBR
AD374
TSSOP – PW
Tape and reel
SN74ACT374PWR
AD374
CDIP – J
Tube
SNJ54ACT374J
SNJ54ACT374J
CFP – W
Tube
SNJ54ACT374W
SNJ54ACT374W
LCCC – FK
Tube
SNJ54ACT374FK
SOIC – DW
–40°C
40°C to 85°C
ORDERABLE
PART NUMBER
PACKAGE†
TA
SN74ACT374N
ACT374
SNJ54ACT374FK
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
Copyright  2002, 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.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
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1
SN54ACT374, SN74ACT374
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS539F – OCTOBER 1995 – REVISED NOVEMBER 2002
FUNCTION TABLE
(each flip-flop)
INPUTS
OE
CLK
D
OUTPUT
Q
L
↑
H
H
L
↑
L
L
L
H or L
X
Q0
H
X
X
Z
logic diagram (positive logic)
OE
CLK
1
11
C1
1D
3
2
1Q
1D
To Seven Other Channels
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±200 mA
Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
† 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
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SN54ACT374, SN74ACT374
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS539F – OCTOBER 1995 – REVISED NOVEMBER 2002
recommended operating conditions (see Note 3)
SN54ACT374
MAX
MIN
MAX
4.5
5.5
4.5
5.5
VCC
VIH
Supply voltage
VIL
VI
Low-level input voltage
Input voltage
0
VO
IOH
Output voltage
0
High-level output current
IOL
∆t/∆v
Low-level output current
High-level input voltage
SN74ACT374
MIN
2
2
V
V
0.8
Input transition rise or fall rate
UNIT
0.8
V
VCC
VCC
V
–24
–24
mA
24
24
mA
8
8
ns/V
VCC
VCC
0
0
V
TA
Operating free-air temperature
–55
125
–40
85
°C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
4.5 V
IOH = –50
50 µA
VOH
IOH = –24
24 mA
IOH = –50 mA†
IOH = –75 mA†
MIN
TA = 25°C
TYP
MAX
SN54ACT374
MIN
MAX
MIN
4.49
4.4
5.5 V
5.4
5.49
5.4
5.4
4.5 V
3.86
3.7
3.76
5.5 V
4.86
4.7
4.76
MAX
UNIT
4.4
V
3.85
5.5 V
IOL = 24 mA
SN74ACT374
4.4
5.5 V
IOL = 50 µA
VOL
VCC
3.85
4.5 V
0.1
0.1
5.5 V
0.1
0.1
0.1
0.1
4.5 V
0.36
0.44
0.44
5.5 V
0.36
0.5
0.44
V
IOL = 50 mA†
IOL = 75 mA†
5.5 V
IOZ
II
VO = VCC or GND
VI = VCC or GND
5.5 V
±0.25
±5
±2.5
µA
5.5 V
±0.1
±1
±1
µA
ICC
VI = VCC or GND,
IO = 0
One input at 3.4 V,
Other inputs at GND or VCC
5.5 V
4
80
40
µA
1.6
1.5
mA
∆ICC‡
1.65
5.5 V
5.5 V
1.65
0.6
Ci
VI = VCC or GND
5V
4.5
† Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC.
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pF
3
SN54ACT374, SN74ACT374
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS539F – OCTOBER 1995 – REVISED NOVEMBER 2002
timing requirements over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V
(unless otherwise noted) (see Figure 1)
TA = 25°C
MIN
MAX
SN54ACT374
MIN
100
MAX
SN74ACT374
MIN
90
UNIT
fclock
tw
Clock frequency
Pulse duration, CLK high or low
5
5
5
ns
tsu
th
Setup time, data before CLK↑
5
5.5
5.5
ns
1.5
1.5
1.5
ns
Hold time, data after CLK↑
70
MAX
MHz
switching characteristics over recommended operating free-air temperature range,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
fmax
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
FROM
(INPUT)
TO
(OUTPUT)
CLK
Q
OE
Q
OE
Q
MIN
TA = 25°C
TYP
MAX
SN54ACT374
MIN
MAX
SN74ACT374
MIN
70
MAX
100
160
90
2
8.5
10
1.5
12
2
11.5
2
8
9.5
1.5
11.5
1.5
11
2
8
9.5
1.5
11.5
1.5
10.5
1.5
8
9
1.5
11.5
1.5
10.5
1.5
8.5
11.5
1.5
13
1
12.5
1.5
7
8.5
1.5
11
1
10
UNIT
MHz
ns
ns
ns
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
Cpd
4
TEST CONDITIONS
Power dissipation capacitance
CL = 50 pF,
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
f = 1 MHz
TYP
40
UNIT
pF
SN54ACT374, SN74ACT374
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS539F – OCTOBER 1995 – REVISED NOVEMBER 2002
PARAMETER MEASUREMENT INFORMATION
2 × VCC
S1
500 Ω
From Output
Under Test
CL = 50 pF
(see Note A)
Open
500 Ω
TEST
S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
2 × VCC
Open
3V
1.5 V
Timing Input
LOAD CIRCUIT
0V
th
tsu
3V
1.5 V
Data Input
tw
0V
3V
1.5 V
Input
1.5 V
VOLTAGE WAVEFORMS
1.5 V
0V
VOLTAGE WAVEFORMS
Output
Control
(low-level
enabling)
3V
1.5 V
1.5 V
0V
tPZL
3V
Input
1.5 V
1.5 V
0V
tPLH
Output
tPHL
50% VCC
VOH
50% VCC
VOL
Output
Waveform 1
S1 at 2 × VCC
(see Note B)
tPLZ
≈VCC
50% VCC
tPZH
Output
Waveform 2
S1 at Open
(see Note B)
VOLTAGE WAVEFORMS
VOL + 0.3 V
VOL
tPHZ
50% VCC
VOH – 0.3 V
VOH
≈0 V
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance.
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, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
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5
MECHANICAL DATA
MCER002C – JANUARY 1995 – REVISED JUNE 1999
J (R-GDIP-T**)
CERAMIC DUAL-IN-LINE
14 LEADS SHOWN
PINS **
14
16
20
A MAX
0.310
(7,87)
0.310
(7,87)
0.310
(7,87)
A MIN
0.290
(7,37)
0.290
(7,37)
0.290
(7,37)
B MAX
0.785
(19,94)
0.785
(19,94)
0.975
(24,77)
B MIN
0.755
(19,18)
0.755
(19,18)
0.930
(23,62)
C MAX
0.300
(7,62)
0.300
(7,62)
0.300
(7,62)
C MIN
0.245
(6,22)
0.245
(6,22)
0.245
(6,22)
DIM
B
14
8
C
1
7
0.065 (1,65)
0.045 (1,14)
0.100 (2,54)
0.070 (1,78)
0.020 (0,51) MIN
A
0.200 (5,08) MAX
Seating Plane
0.130 (3,30) MIN
0.023 (0,58)
0.015 (0,38)
0°–15°
0.014 (0,36)
0.008 (0,20)
0.100 (2,54)
4040083/E 03/99
NOTES: A.
B.
C.
D.
E.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
This package is hermetically sealed with a ceramic lid using glass frit.
Index point is provided on cap for terminal identification.
Falls within MIL STD 1835 GDIP1-T14, GDIP1-T16, and GDIP1-T20
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1
MECHANICAL DATA
MCFP006A– JANUARY 1995 – REVISED FEBRUARY 2002
W (R-GDFP-F20)
CERAMIC DUAL FLATPACK
Base and Seating Plane
0.300 (7,62)
0.245 (6,22)
0.045 (1,14)
0.026 (0,66)
0.006 (0,15)
0.004 (0,10)
0.100 (2,54)
0.045 (1,14)
0.320 (8,13) MAX
1
0.019 (0,48)
0.015 (0,38)
20
0.050 (1,27)
0.540 (13,72)
0.490 (12,45)
0.005 (0,13) MIN
4 Places
10
11
0.260 (6,60)
0.200 (5,08)
0.260 (6,60)
0.200 (5,08)
4040180-4 / C 02/02
NOTES: A.
B.
C.
D.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
This package can be hermetically sealed with a ceramic lid using glass frit.
Index point is provided on cap for terminal identification only.
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1
MECHANICAL DATA
MLCC006B – OCTOBER 1996
FK (S-CQCC-N**)
LEADLESS CERAMIC CHIP CARRIER
28 TERMINAL SHOWN
18
17
16
15
14
13
NO. OF
TERMINALS
**
12
19
11
20
10
A
B
MIN
MAX
MIN
MAX
20
0.342
(8,69)
0.358
(9,09)
0.307
(7,80)
0.358
(9,09)
28
0.442
(11,23)
0.458
(11,63)
0.406
(10,31)
0.458
(11,63)
21
9
22
8
44
0.640
(16,26)
0.660
(16,76)
0.495
(12,58)
0.560
(14,22)
23
7
52
0.739
(18,78)
0.761
(19,32)
0.495
(12,58)
0.560
(14,22)
24
6
68
0.938
(23,83)
0.962
(24,43)
0.850
(21,6)
0.858
(21,8)
84
1.141
(28,99)
1.165
(29,59)
1.047
(26,6)
1.063
(27,0)
B SQ
A SQ
25
5
26
27
28
1
2
3
4
0.080 (2,03)
0.064 (1,63)
0.020 (0,51)
0.010 (0,25)
0.020 (0,51)
0.010 (0,25)
0.055 (1,40)
0.045 (1,14)
0.045 (1,14)
0.035 (0,89)
0.045 (1,14)
0.035 (0,89)
0.028 (0,71)
0.022 (0,54)
0.050 (1,27)
4040140 / D 10/96
NOTES: A.
B.
C.
D.
E.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
This package can be hermetically sealed with a metal lid.
The terminals are gold plated.
Falls within JEDEC MS-004
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1
MECHANICAL
MPDI002C – JANUARY 1995 – REVISED DECEMBER 20002
N (R-PDIP-T**)
PLASTIC DUAL-IN-LINE PACKAGE
16 PINS SHOWN
PINS **
14
16
18
20
A MAX
0.775
(19,69)
0.775
(19,69)
0.920
(23,37)
1.060
(26,92)
A MIN
0.745
(18,92)
0.745
(18,92)
0.850
(21,59)
0.940
(23,88)
MS-100
VARIATION
AA
BB
AC
DIM
A
16
9
0.260 (6,60)
0.240 (6,10)
1
C
AD
8
0.070 (1,78) MAX
0.035 (0,89) MAX
0.325 (8,26)
0.300 (7,62)
0.020 (0,51) MIN
0.015 (0,38)
Gauge Plane
0.200 (5,08) MAX
Seating Plane
0.010 (0,25) NOM
0.125 (3,18) MIN
0.100 (2,54)
0.430 (10,92) MAX
0.021 (0,53)
0.015 (0,38)
0.010 (0,25) M
14/18 PIN ONLY
20 pin vendor option
D
4040049/E 12/2002
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001, except 18 and 20 pin minimum body lrngth (Dim A).
D. The 20 pin end lead shoulder width is a vendor option, either half or full width.
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1
MECHANICAL DATA
MSOI003E – JANUARY 1995 – REVISED SEPTEMBER 2001
DW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
16 PINS SHOWN
0.020 (0,51)
0.014 (0,35)
9
0.050 (1,27)
16
0.010 (0,25)
0.419 (10,65)
0.400 (10,15)
0.010 (0,25) NOM
0.299 (7,59)
0.291 (7,39)
Gage Plane
0.010 (0,25)
1
8
0°– 8°
0.050 (1,27)
0.016 (0,40)
A
Seating Plane
0.104 (2,65) MAX
0.012 (0,30)
0.004 (0,10)
PINS **
0.004 (0,10)
16
18
20
24
28
A MAX
0.410
(10,41)
0.462
(11,73)
0.510
(12,95)
0.610
(15,49)
0.710
(18,03)
A MIN
0.400
(10,16)
0.453
(11,51)
0.500
(12,70)
0.600
(15,24)
0.700
(17,78)
DIM
4040000/E 08/01
NOTES: A.
B.
C.
D.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion not to exceed 0.006 (0,15).
Falls within JEDEC MS-013
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1
MECHANICAL DATA
MSOP002 – OCTOBER 1994
NS (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,51
0,35
1,27
14
0,25 M
8
0,15 NOM
5,60
5,00
8,20
7,40
Gage Plane
1
7
0,25
0°– 10°
A
1,05
0,55
Seating Plane
2,00 MAX
0,10
0,05 MIN
PINS **
14
16
20
24
A MAX
10,50
10,50
12,90
15,30
A MIN
9,90
9,90
12,30
14,70
DIM
4040062 / B 02/95
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.
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1
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
1
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
0,65
14
0,10 M
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
0,15
0,05
1,20 MAX
PINS **
0,10
8
14
16
20
24
28
A MAX
3,10
5,10
5,10
6,60
7,90
9,80
A MIN
2,90
4,90
4,90
6,40
7,70
9,60
DIM
4040064/F 01/97
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-153
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
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