SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005 D Member of the Texas Instruments D D D D D D D D D D D D D D D D DGG, DGV, OR DL PACKAGE (TOP VIEW) Widebus Family Output Voltage Translation Tracks VCC Supports Mixed-Mode Signal Operation On All Data I/O Ports − 5-V Input Down to 3.3-V Output Level Shift, With 3.3-V VCC − 5-V/3.3-V Input Down to 2.5-V Output Level Shift, With 2.5-V VCC 5-V-Tolerant I/Os, With Device Powered Up or Powered Down Bidirectional Data Flow, With Near-Zero Propagation Delay Low ON-State Resistance (ron) Characteristics (ron = 5 Ω Typical) Low Input/Output Capacitance Minimizes Loading (Cio(OFF) = 5 pF Typical) Data and Control Inputs Provide Undershoot Clamp Diodes Low Power Consumption (ICC = 70 µA Max) VCC Operating Range From 2.3 V to 3.6 V Data I/Os Support 0- to 5-V Signaling Levels (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V) Control Inputs Can be Driven by TTL or 5-V/3.3-V CMOS Outputs Ioff Supports Partial-Power-Down Mode Operation Latch-Up Performance Exceeds 250 mA Per JESD 17 ESD Performance Tested Per JESD 22 − 2000-V Human-Body Model (A114-B, Class II) − 1000-V Charged-Device Model (C101) Supports Digital Applications: Level Translation, PCI Interface, Bus Isolation Ideal for Low-Power Portable Equipment NC 1A1 1A2 1A3 1A4 1A5 1A6 GND 1A7 1A8 1A9 1A10 1A11 1A12 2A1 2A2 VCC 2A3 GND 2A4 2A5 2A6 2A7 2A8 2A9 2A10 2A11 2A12 1 56 2 55 3 54 4 53 5 52 6 51 7 50 8 49 9 48 10 47 11 46 12 45 13 44 14 43 15 42 16 41 17 40 18 39 19 38 20 37 21 36 22 35 23 34 24 33 25 32 26 31 27 30 28 29 1OE 2OE 1B1 1B2 1B3 1B4 1B5 GND 1B6 1B7 1B8 1B9 1B10 1B11 1B12 2B1 2B2 2B3 GND 2B4 2B5 2B6 2B7 2B8 2B9 2B10 2B11 2B12 NC − No internal connection description/ordering information The SN74CB3T16211 is a high-speed TTL-compatible FET bus switch with low ON-state resistance (ron), allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data I/O ports by providing voltage translation that tracks VCC. The SN74CB3T16211 supports systems using 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels (see Figure 1). 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. Widebus is a trademark of Texas Instruments. Copyright 2005, Texas Instruments Incorporated !"#$%&" ' ()##*& %' "! +),-(%&" .%&* #".)(&' ("!"#$ &" '+*(!(%&"' +*# &/* &*#$' "! *0%' '&#)$*&' '&%.%#. 1%##%&2 #".)(&" +#"(*''3 ."*' "& *(*''%#-2 (-).* &*'&3 "! %-- +%#%$*&*#' POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005 description/ordering information (continued) VCC 5.5 V VCC IN ≈VCC − 1 V ≈VCC OUT ≈VCC − 1 V CB3T 0V 0V Input Voltages Output Voltages NOTE A: If the input high-voltage (VIH) level is greater than or equal to VCC − 1 V and less than or equal to 5.5 V, the output high-voltage (VOH) level is equal to approximately the VCC voltage level. Figure 1. Typical DC Voltage-Translation Characteristics The I/O port of this device has a pullup current source that maintains the output voltage at VCC when the device is ON and the input is greater than or equal to VCC − 1. Because of the pullup current source, the output voltage level may be less than VCC when the operating frequency is low and the I/O port is connected to a pulldown resistor. In order to maintain the output voltage at VCC, a pullup resistor must be connected to VCC, instead of a pulldown resistor to ground. The SN74CB3T16211 is organized as two 12-bit bus switches with separate output-enable (1OE, 2OE) inputs. It can be used as two 12-bit bus switches or as one 24-bit bus switch. When OE is low, the associated 12-bit bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated 12-bit bus switch is OFF, and a high-impedance state exists between the A and B ports. This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off. 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 TA TOP-SIDE MARKING Tube SN74CB3T16211DL Tape and reel SN74CB3T16211DLR Tube SN74CB3T16211DGG Tape and reel SN74CB3T16211DGGR TVSOP − DGV Tape and reel SN74CB3T16211DGVR KR211 VFBGA − ZQL (PB-Free) Tape and reel SN74CB3T16211ZQLR KR211 SSOP − DL −40°C −40 C to 85 85°C C ORDERABLE PART NUMBER PACKAGE† TSSOP − DGG CB3T16211 CB3T16211 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005 ZQL PACKAGE (TOP VIEW) 1 2 3 4 5 terminal assignments 6 A B C D E F 1 2 3 4 5 6 A 1A2 1A1 NC 1OE 2OE 1B1 B 1A5 1A4 1A3 1B2 1B3 1B4 C 1A7 GND 1A6 1B5 GND 1B6 D 1A10 1A8 1A9 1B8 1B7 1B9 E 1A12 1A11 1B10 1B11 F 2A1 2A2 2B1 1B12 G GND 2A3 2B3 GND 2B2 H VCC 2A4 2A5 2A6 2B6 2B5 2B4 H J 2A7 2A8 2A9 2B9 2B8 2B7 J K 2A10 2A11 2A12 2B12 2B11 2B10 G K NC − No internal connection FUNCTION TABLE (each 12-bit bus switch) INPUT OE INPUT/OUTPUT A FUNCTION L B A port = B port H Z Disconnect logic diagram (positive logic) 54 2 1A1 1B1 SW 42 14 1A12 1B12 SW 56 1OE 15 2A1 41 2B1 SW 28 2A12 29 SW 2B12 55 2OE POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005 simplified schematic, each FET switch (SW) A B VG† Control Circuit EN‡ † Gate voltage (VG) is equal to approximately VCC + VT when the switch is ON and VI > VCC + VT. ‡ Internal enable signal applied to the switch absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Control input voltage range, VIN (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Switch I/O voltage range, VI/O (see Notes 1, 2, and 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Control input clamp current, IIK (VIN < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 mA I/O port clamp current, II/OK (VI/O < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 mA ON-state switch current, II/O (see Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±128 mA Continuous current through VCC or GND terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA Package thermal impedance, θJA (see Note 5): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48°C/W DL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56°C/W ZQL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°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. All voltages are with respect to ground, unless otherwise specified. 2. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 3. VI and VO are used to denote specific conditions for VI/O. 4. II and IO are used to denote specific conditions for II/O. 5. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions (see Note 6) VCC Supply voltage VIH High-level control input voltage VCC = 2.3 V to 2.7 V VCC = 2.7 V to 3.6 V VIL Low-level control input voltage VCC = 2.3 V to 2.7 V VCC = 2.7 V to 3.6 V VI/O TA Data input/output voltage Operating free-air temperature MIN MAX UNIT 2.3 3.6 1.7 5.5 V 2 5.5 0 0.7 0 0.8 0 5.5 V −40 85 °C V V NOTE 6: All unused control 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. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIK VCC = 3 V, II = −18 mA VOH See Figures 3 and 4 IIN Control inputs IOZ‡ VCC = 3.6 V, VO = 0 to 5.5 V, VI = 0, Switch OFF, VIN = VCC or GND Ioff VCC = 0, VO = 0 to 5.5 V, VI = 0 ICC ∆ICC§ Control inputs Cin Control inputs TYP† VCC = 3.6 V, VIN = 3.6 V to 5.5 V or GND VCC = 3.6 V, Switch ON, VIN = VCC or GND II MIN VCC = 3.6 V, II/O = 0, Switch ON or OFF, VIN = VCC or GND VCC = 3 V to 3.6 V, One input at VCC − 0.6 V, Other inputs at VCC or GND MAX UNIT −1.2 V ±10 µA ±20 VI = VCC − 0.7 V to 5.5 V VI = 0.7 V to VCC − 0.7 V −40 µA ±5 VI = 0 to 0.7 V ±10 µA 10 µA VI = VCC or GND 70 VI = 5.5 V 70 A µA 300 µA VCC = 3.3 V, VIN = VCC or GND 4 pF Cio(OFF) VCC = 3.3 V, VI/O = 5.5 V, 3.3 V, or GND, Switch OFF, VIN = VCC or GND 5 pF VCC = 3.3 V, Switch ON, VIN = VCC or GND VI/O = 5.5 V or 3.3 V Cio(ON) VI/O = GND 13 VCC = 2.3 V, TYP at VCC = 2.5 V, VI = 0 IO = 24 mA 5 9.5 IO = 16 mA 5 9.5 VCC = 3 V, VI = 0 IO = 64 mA IO = 32 mA 5 8.5 5 8.5 ron¶ 5 pF Ω VIN and IIN refer to control inputs. VI, VO, II, and IO refer to data pins. † All typical values are at VCC = 3.3 V (unless otherwise noted), TA = 25°C. ‡ For I/O ports, the parameter IOZ includes the input leakage current. § This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND. ¶ Measured by the voltage drop between A and B terminals at the indicated current through the switch. ON-state resistance is determined by the lower of the voltages of the two (A or B) terminals. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005 switching characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figure 2) PARAMETER tpd† ten FROM (INPUT) TO (OUTPUT) A or B B or A OE A or B VCC = 2.5 V ± 0.2 V MIN MAX VCC = 3.3 V ± 0.3 V MIN 0.15 1 12 1 UNIT MAX 0.25 ns 10 ns tdis OE A or B 1 7.5 1 8.5 ns † The propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load capacitance, when driven by an ideal voltage source (zero output impedance). 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005 PARAMETER MEASUREMENT INFORMATION VCC Input Generator VIN 50 Ω 50 Ω VG1 TEST CIRCUIT DUT Input Generator VI S1 RL VO 50 Ω VG2 CL (see Note A) RL TEST VCC S1 RL VI CL tpd(s) 2.5 V ± 0.2 V 3.3 V ± 0.3 V Open Open 500 Ω 500 Ω 3.6 V or GND 5.5 V or GND 30 pF 50 pF tPLZ/tPZL 2.5 V ± 0.2 V 3.3 V ± 0.3 V 2 × VCC 2 × VCC 500 Ω 500 Ω GND GND 30 pF 50 pF 0.15 V 0.3 V tPHZ/tPZH 2.5 V ± 0.2 V 3.3 V ± 0.3 V Open Open 500 Ω 500 Ω 3.6 V 5.5 V 30 pF 50 pF 0.15 V 0.3 V Output Control (VIN) V∆ VCC VCC/2 VCC VCC/2 0V tPLH VOH Output VCC/2 Output Waveform 1 S1 at 2 × VCC (see Note B) tPLZ VCC VCC/2 tPZH tPHL VCC/2 VOL VCC/2 0V tPZL VCC/2 Open GND 50 Ω Output Control (VIN) 2 × VCC Output Waveform 2 S1 at Open (see Note B) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES (tpd(s)) VOL + V∆ VOL tPHZ VCC/2 VOH − V∆ VOH 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES NOTES: B. CL includes probe and jig capacitance. C. 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. D. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns. E. The outputs are measured one at a time, with one transition per measurement. F. tPLZ and tPHZ are the same as tdis. G. tPZL and tPZH are the same as ten. H. tPLH and tPHL are the same as tpd(s). The tpd propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load capacitance, when driven by an ideal voltage source (zero output impedance). I. All parameters and waveforms are not applicable to all devices. Figure 2. Test Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs INPUT VOLTAGE OUTPUT VOLTAGE vs INPUT VOLTAGE 4 VCC = 2.3 V IO = 1 µA TA = 25°C 3 VO – Output Voltage – V VO – Output Voltage – V 4 2 1 0 VCC = 3 V IO = 1 µA TA = 25°C 3 2 1 0 0 1 2 3 4 5 6 0 VI − Input Voltage − V 1 2 VI − Input Voltage − V Figure 3. Data Output Voltage vs Data Input Voltage 8 POST OFFICE BOX 655303 3 • DALLAS, TEXAS 75265 4 5 6 SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE HIGH vs SUPPLY VOLTAGE VOH – Output Voltage High – V 3.5 4 VCC = 2.3 V to 3.6 V VI = 5.5 V TA = 85°C 100 µA 8 mA 16 mA 24 mA 3 2.5 2 1.5 2.3 3.5 VCC = 2.3 V to 3.6 V VI = 5.5 V TA = 25°C 100 µA 8 mA 16 mA 24 mA 3 2.5 2 1.5 2.5 2.7 2.9 3.1 3.3 3.5 3.7 2.3 2.5 VCC − Supply Voltage − V 2.7 2.9 3.1 3.3 3.5 3.7 VCC − Supply Voltage − V OUTPUT VOLTAGE HIGH vs SUPPLY VOLTAGE 4 VOH – Output Voltage High – V VOH – Output Voltage High – V 4 OUTPUT VOLTAGE HIGH vs SUPPLY VOLTAGE 3.5 VCC = 2.3 V to 3.6 V VI = 5.5 V TA = −40°C 100 µA 8 mA 16 mA 24 mA 3 2.5 2 1.5 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 VCC − Supply Voltage − V Figure 4. VOH Values POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 PACKAGE OPTION ADDENDUM www.ti.com 24-May-2007 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty 74CB3T16211DGGRE4 ACTIVE TSSOP DGG 56 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM 74CB3T16211DGVRE4 ACTIVE TVSOP DGV 56 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM 74CB3T16211DGVRG4 ACTIVE TVSOP DGV 56 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM 74CB3T16211DLRG4 ACTIVE SSOP DL 56 1000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74CB3T16211DGG PREVIEW TSSOP DGG 56 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74CB3T16211DGGR ACTIVE TSSOP DGG 56 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74CB3T16211DGVR ACTIVE TVSOP DGV 56 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74CB3T16211DL ACTIVE SSOP DL 56 20 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74CB3T16211DLG4 ACTIVE SSOP DL 56 20 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74CB3T16211DLR ACTIVE SSOP DL 56 1000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74CB3T16211GQLR NRND BGA MI CROSTA R JUNI OR GQL 56 1000 SNPB Level-1-240C-UNLIM SN74CB3T16211ZQLR ACTIVE BGA MI CROSTA R JUNI OR ZQL 56 1000 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM 35 TBD Lead/Ball Finish MSL Peak Temp (3) (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 Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 24-May-2007 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 PACKAGE MATERIALS INFORMATION www.ti.com 26-Apr-2007 TAPE AND REEL INFORMATION Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com Device 26-Apr-2007 Package Pins Site Reel Diameter (mm) Reel Width (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN74CB3T16211DGGR DGG 56 MLA 330 24 8.6 15.8 1.8 12 24 Q1 SN74CB3T16211DGVR DGV 56 MLA 330 24 6.8 10.1 1.6 12 24 Q1 SN74CB3T16211DLR DL 56 MLA 330 32 11.35 18.67 3.1 16 32 Q1 SN74CB3T16211GQLR GQL 56 HIJ 330 16 4.8 7.3 1.45 8 16 Q1 SN74CB3T16211ZQLR ZQL 56 HIJ 330 16 4.8 7.3 1.45 8 16 Q1 TAPE AND REEL BOX INFORMATION Device Package Pins Site Length (mm) Width (mm) Height (mm) SN74CB3T16211DGGR DGG 56 MLA 333.2 333.2 31.75 SN74CB3T16211DGVR DGV 56 MLA 333.2 333.2 31.75 SN74CB3T16211DLR DL 56 MLA 336.6 342.9 41.3 SN74CB3T16211GQLR GQL 56 HIJ 346.0 346.0 33.0 SN74CB3T16211ZQLR ZQL 56 HIJ 346.0 346.0 33.0 Pack Materials-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 26-Apr-2007 Pack Materials-Page 3 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. 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