SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 FEATURES • • • • • • • • Single-Chip Mixer/Oscillator and Phase-Locked Loop (PLL) Synthesizer Three-Band Local Oscillator and Mixer Inter-Integrated Circuit (I2C) Bus Protocol (Bidirectional Data Transmission) 30-V Tuning-Voltage Output Four NPN-Type Band-Switch (BS) Drivers Programmable Reference Divider Ratio (512, 640, or 1024) 5-V Power Supply 32-Pin Thin Shrink Small-Outline Package (TSSOP) APPLICATIONS • • • TVs VCR/DVD Recorders Set-Top Boxes DESCRIPTION TSSOP PACKAGE (TOP VIEW) VLO OSC B VLO OSC C OSC GND VHI OSC B VHI OSC C UHF OSC B1 UHF OSC C1 UHF OSC C2 UHF OSC B2 IF GND IF OUT1 IF OUT2 VCC CP VTU XTAL 1 32 2 31 3 30 4 29 5 28 6 27 7 26 8 25 9 24 10 23 11 22 12 21 13 20 14 19 15 18 16 17 UHF RF IN2 UHF RF IN1 VHF RF IN2 VHF RF IN1 RF GND MIX OUT2 MIX OUT1 BS4 BS3 BS2 BS1 NC ADC AS SDA SCL NC – No internal connection The SN761683B is a synthesized tuner IC designed for TV tuning systems. The circuit consists of a phase-locked loop (PLL) synthesizer, three-band local oscillator and mixer, 30-V output tuning amplifier, and four NPN band-switch drivers, and is available in a small-outline package. A 15-bit programmable counter and reference divider are controlled by inter-integrated circuit (I2C) bus protocol. 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. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2006, Texas Instruments Incorporated SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the bipolar device. VHF-L Oscillator VCC MIX OUT1 MIX OUT2 UHF OSC C2 UHF OSC B2 UHF OSC B1 VHF-H Oscillator UHF OSC C1 VHI OSC C VHI OSC B OSC GND VLO OSC C VLO OSC B FUNCTIONAL BLOCK DIAGRAM UHF Oscillator IF Amplifier IF OUT1 IF OUT2 VHF Mixer VHF RF IN1 VHF RF IN2 IF GND UHF Mixer UHF RF IN1 UHF RF IN2 1/8 Prescaler 1/32, 1/33 Prescaler CP 15-Bit Counter Operational Amplifier RF GND XTAL XTAL Oscillator 4 MHz 512/640/1024 Divider VTU Charge Pump Phase Detector NPN-Band Switch Port SCL SDA 2 I C Bus Interface AS BS4 BS3 BS2 BS1 ADC 5-Level ADC B0089-02 2 Submit Documentation Feedback SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 TERMINAL FUNCTIONS TERMINAL NAME DESCRIPTION NO. SCHEMATIC ADC 20 ADC input Figure 1 AS 19 Address selection input Figure 2 BS1 22 Band-switch 1 output (NPN emitter follower) Figure 3 BS2 23 Band-switch 2 output (NPN emitter follower) Figure 3 BS3 24 Band-switch 3 output (NPN emitter follower) Figure 3 BS4 25 Band-switch 4 output (NPN emitter follower) Figure 3 CP 14 Charge-pump output Figure 4 IF GND 10 IF ground IF OUT1 11 IF output 1 Figure 5 IF OUT2 12 IF output 2 Figure 5 MIX OUT1 26 Mixer output 1 Figure 6 MIX OUT2 27 Mixer output 2 Figure 6 NC 21 No connection OSC GND 3 Oscillator ground RF GND 28 RF ground SCL 17 Serial clock input Figure 7 SDA 18 Serial data input/output Figure 8 UHF OSC B1 6 UHF oscillator base 1 Figure 9 UHF OSC B2 9 UHF oscillator base 2 Figure 9 UHF OSC C1 7 UHF oscillator collector 1 Figure 9 UHF OSC C2 8 UHF oscillator collector 2 Figure 9 UHF RF IN1 31 UHF RF input 1 Figure 10 UHF RF IN2 32 UHF RF input 2 Figure 10 VCC 13 Supply voltage for mixer/oscillator/PLL: 5 V VHF RF IN1 29 VHF RF input 1 Figure 11 VHF RF IN2 30 VHF RF input 2 Figure 11 VHI OSC B 4 VHF HIGH oscillator base Figure 12 VHI OSC C 5 VHF HIGH oscillator collector Figure 12 VLO OSC B 1 VHF LOW oscillator base Figure 13 VLO OSC C 2 VHF LOW oscillator collector Figure 13 VTU 15 Tuning voltage amplifier output Figure 14 XTAL 16 4-MHz crystal oscillator input Figure 15 Submit Documentation Feedback 3 SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 150 kW 20 19 50 kW S0159-01 S0133-03 Figure 1. Figure 2. 22 23 24 50 kW 14 25 S0138-02 S0156-01 Figure 3. Figure 4. 26 27 11 12 S0160-01 S0155-01 Figure 5. 4 Figure 6. Submit Documentation Feedback SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 18 17 S0136-03 S0133-02 Figure 7. Figure 8. 31 8 7 9 6 3 kW 32 3 kW S0142-05 S0130-01 Figure 9. Figure 10. 5 29 30 3 kΩ 4 3 kW 3 kW S0142-04 S0129-01 Figure 11. Figure 12. Submit Documentation Feedback 5 SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 15 2 1 3 kW 3 kW S0129-02 S0157-01 Figure 13. Figure 14. 16 S0158-01 Figure 15. Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) Supply voltage range (2) VCC MAX –0.4 6.5 UNIT V VGND Input voltage range RF GND, OSC GND –0.4 0.4 V VVTU Input voltage range 2 (2) VTU –0.4 35 V VIN Input voltage range 3 (2) All other pins –0.4 6.5 V dissipation (3) TA ≤ 25°C PD Continuous total TA Operating free-air temperature range –20 85 °C Tstg Storage temperature range –65 150 °C TJC Maximum junction temperature 150 °C 10 s tSC(max) (1) (2) (3) 6 1 (2) MIN VCC Maximum short-circuit time All pins to VCC, All pins to IFGND, OSCGND, RFGND 1040 mW 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. Voltage values are with respect to IF GND. Derating factor is 8.33 mW/°C for TA ≥ 25°C. Submit Documentation Feedback SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 Recommended Operating Conditions MIN VCC Supply voltage VTU Tuning supply voltage IBS Output current of band switch TA Operating free-air temperature NOM MAX 5 5.5 30 33 V 10 mA 85 °C 4.5 One port on –20 UNIT V Total Device and Serial Interface Electrical Characteristics VCC = 4.5 V to 5.5 V, TA = –20°C to 85°C (unless otherwise noted) PARAMETER ICC1 TEST CONDITIONS MIN Supply current 1 One band switch on (IBS = 10 mA) TYP MAX UNIT 60 mA 70 mA ICC2 Supply current 2 VIH High-level input voltage SCL, SDA VIL Low-level input voltage SCL, SDA 1.4 V IIH High-level input current SCL, SDA 10 µA IIL Low-level input current SCL, SDA VPOR Power-on-reset supply voltage (threshold of supply voltage between reset and operation mode) 2.8 VCC µA –10 2.1 V 2.8 3.6 V I2C Interface VASH Address-select high-input voltage AS VCC = 5 V 4.5 5 V VASM1 Address-select mid1-input voltage AS VCC = 5 V 2 3 V VASM2 Address-select mid2-input voltage AS VCC = 5 V 1 1.5 V VASL Address-select low-input voltage AS VCC = 5 V IASH Address-select high-input current AS IASL Address-select low-input current AS VADC ADC input voltage See Table 8 IADH ADC high-level input current VADC = VCC IADL ADC low-level input current VADC = 0 V VOL Low-level output voltage SDA VCC = 5 V, IOL = 3 mA 0.4 V lSDAH High-level output leakage current SDA VSDA = 5.5 V 10 µA fSCL Clock frequency SCL 400 kHz thd(DAT) Data hold time See Figure 16 0 µs t(BUF) Bus free time See Figure 16 1.3 µs thd(STA) Start hold time See Figure 16 0.6 µs t(LOW) SCL-low hold time See Figure 16 1.3 µs t(HIGH) SCL-high hold time See Figure 16 0.6 µs tsu(STA) Start setup time See Figure 16 0.6 µs tsu(DAT) Data setup time See Figure 16 0.1 µs tr SCL, SDA rise time See Figure 16 0.3 µs tf SCL, SDA fall time See Figure 16 0.3 µs tsu(STO) Stop setup time See Figure 16 0.5 V 140 µA µA –50 0 V 10 µA µA –50 100 Submit Documentation Feedback VCC 0.6 µs 7 SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 PLL and Band-Switch Electrical Characteristics VCC = 4.5 V to 5.5 V, TA = –20°C to 85°C (unless otherwise noted) PARAMETER MIN TYP MAX UNIT Divider ratio 15-bit frequency word 256 fXTAL Crystal oscillator frequency RXTAL = 25 Ω to 300 Ω 3.2 ZXTAL Crystal oscillator input impedance VIXTAL2 Minimum reference input sensitivity VVTUL Tuning amplifier low-level output voltage RL = 27 kΩ, VTU = 33 V IVTUOFF Tuning amplifier leakage current (OFF) OS = 1, VTU = 33 V ICPH Charge-pump high-level input current CP = 1 280 µA ICPL Charge-pump low-level input current CP = 0 60 µA VCP Charge-pump output voltage PLL locked ICPOFF Charge-pump leakage current T2 = 0, T1 = 1, VCP = 2 V, TA = 25°C IBS Band-switch driver output current VBS1 VBS2 IBSOFF 8 TEST CONDITIONS N Band-switch driver output voltage Band-switch driver leakage current 32767 4 4.48 1.6 XTAL 4 MHz, AC coupling with 0.1-µF capacitor IBS = 10 mA IBS = 10 mA, VCC = 5 V, TA = 25°C VBS = 0 V Submit Documentation Feedback MHz kΩ 100 mVp-p 0.4 0.5 V 10 µA 1.95 –15 V 15 nA 10 mA 3 3.5 V 3.9 3 µA SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 Mixer, Oscillator, IF Amplifier Electrical Characteristics VCC = 5 V, TA = 25°C, measured in Figure 17 reference measurement circuit at 50-Ω system, IF filter characteristics: fpeak = 43 MHz (unless otherwise noted) PARAMETER Gc1 Gc3 Gc4 Gc6 Gc7 TEST CONDITIONS NF1 22 25 28 fin = 130 MHz 22 25 28 Conversion gain (mixer-IF amplifier), VHF-HIGH (1) fin = 136 MHz 22 25 28 fin = 364 MHz 22 25 28 fin = 370 MHz 26 29 32 fin = 804 MHz 25 28 31 Noise figure, VHF-LOW NF3 NF4 Noise figure, VHF-HIGH NF6 NF7 Noise figure, UHF NF9 CM1 CM3 CM4 CM6 CM7 CM9 VIFO1 VIFO3 VIFO4 VIFO6 VIFO7 VIFO9 ΦOSC1 ΦOSC3 ΦOSC4 ΦOSC6 ΦOSC7 ΦOSC9 1% cross-modulation distortion, VHF-LOW (2) 1% cross-modulation distortion, VHF-HIGH (2) 1% cross-modulation distortion, UHF (2) IF output voltage, VHF-LOW (3) IF output voltage, VHF-HIGH (3) IF output voltage, UHF (3) Phase noise, VHF-LOW (4) Phase noise, VHF-HIGH (4) Phase noise, UHF (4) fin = 55.25 MHz 9.5 fin = 127.25 MHz 9.5 fin = 133.25 MHz 10 fin = 361.25 MHz 10 fin = 367.25 MHz 11 fin = 801.25 MHz 11 fin = 55.25 MHz 89 fin = 127.25 MHz 89 fin = 133.25 MHz 86 fin = 361.25 MHz 86 fin = 367.25MHz 87 fin = 801.25 MHz 87 fin = 55.25 MHz 117 fin = 127.25 MHz 117 fin = 133.25 MHz 117 fin = 361.25 MHz 117 fin = 367.25MHz 117 fin = 801.25 MHz 117 fin = 55.25 MHz 88 fin = 127.25 MHz 88 fin = 133.25 MHz 86 fin = 361.25 MHz 86 fin = 367.25MHz 84 fin = 801.25 MHz 84 Prescaler beat (5) (1) (2) (3) (4) (5) TYP MAX fin = 58 MHz Conversion gain (mixer-IF amplifier), UHF (1) Gc9 MIN Conversion gain (mixer-IF amplifier), VHF-LOW (1) UNIT dB dB dB dB dB dB dBµV dBµV dBµV dBµV dBµV dBµV dBc/Hz dBc/Hz dBc/Hz 25 dBµV IF = 43 MHz, RF input level = 80 dBµV fundes = fdes ±6 MHz, Pin = 80 dBµV, AM 1 kHz, 30%, DES/CM = S/I = 46 dB IF = 45.75 MHz Offset = 10 kHz, RF input level = 70 dBµV Design parameter, not tested Submit Documentation Feedback 9 SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 FUNCTIONAL DESCRIPTION I2C Bus Mode I2C Write Mode (R/W = 0) Table 1. Write Data Format MSB LSB Address byte (ADB) 1 1 0 0 0 MA1 MA0 R/W = 0 A (1) Divider byte 1 (DB1) 0 N14 N13 N12 N11 N10 N9 N8 A (1) Divider byte 2 (DB2) N7 N6 N5 N4 N3 N2 N1 N0 A (1) Control byte (CB) 1 CP T2 T1 T0 RSA RSB OS A (1) Band-switch byte (BB) X X X X BS4 BS3 BS2 BS1 A (1) (1) Acknowledge Table 2. I2C Write-Mode Data-Symbol Description SYMBOL MA1, MA0 DESCRIPTION DEFAULT Address set bits (see Table 3) Programmable counter set bits N = N14 × 214 + N13 × 213 + ... + N1 × 2 + N0 Oscillation frequency = fr × 8 × N fr = Reference frequency = 4 MHz/Reference divider N14–N0 CP T2–T0 RSA, RSB Nn = 0 Charge-pump current set bit CP = 1 60 µA (CP = 0), 280 µA (CP = 1) Test bits (see Table 4) T2 = 0, T1 = 0, T0 = 1 Normal mode: T2 = 0, T1 = 0, T0 = 1/0 Reference divider ratio selection bits (see Table 6) RSA = 0, RSB = 1 Tuning amplifier control bit OS OS = 0 Tuning voltage on (OS = 0) Tuning voltage off, high impedance (OS = 1) Band-switch ports control bits BS3 = 1: BS3 port ON BS3 = 0: BS3 port OFF Band selection by BS1, BS2, and BS4 bits: BS1 BS2 BS4 SELECTED BAND "ON" PORT 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 0 0(1) 1 1(1) 1(1) 1(1) UHF VHF-LOW VHF-HIGH VHF-HIGH UHF UHF UHF UHF BS4 BS1 BS2 (BS1, BS2) BS4 (BS1, BS4) (BS2, BS4) (BS1, BS2, BS4) BS4–BS1 (1) X 10 These bit patterns are forbidden, due to limitation of band-switch output current. Don't care Submit Documentation Feedback BSn = 0 (UHF) SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 Table 3. Address Selection VOLTAGE APPLIED ON AS INPUT MA1 MA0 0 0 LOW: 0 V to 0.1 VCC 0 1 MID2: open, or 0.2 VCC to 0.3 VCC 1 0 MID1: 0.4 VCC to 0.6 VCC 1 1 HIGH: 0.9 VCC to VCC Table 4. Test Bits (1) (1) T2 T1 T0 DEVICE OPERATION 0 0 0 Normal operation 0 0 1 Normal operation 0 1 X Charge pump is off. 1 1 0 Charge pump is sink. 1 1 1 Charge pump is source. 1 0 X Test mode NOTE Default ADC not available Not used for other bit patterns Table 5. Reference Divider Ratio RSA RSB REFERENCE DIVIDER RATIO X 0 640 0 1 1024 1 1 512 Example of I2C Data-Write Sequences Telegram Examples Start – ADB – DB1 – DB2 – CB – BB – Stop Start – ADB – DB1 – DB2 – Stop Start – ADB – CB – BB – Stop Abbreviations ADB: DB1: DB2: CB: BB: Start: Stop: Address byte Divider byte 1 Divider byte 2 Control byte Band-switch byte Start condition Stop condition Note: Following bytes after band-switch byte (BB) are ignored. Start – ADB – DB1 – DB2 – CB – BB – (ignored) – (ignored) – Stop Start – ADB – CB – BB – (ignored) – (ignored) – Stop Submit Documentation Feedback 11 SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 I2C Read Mode (R/W = 1) Table 6. Read Data Format MSB 1 1 0 0 0 MA1 MA0 R/W = 1 A (1) POR FL 1 1 1 A2 A1 A0 – Address byte (ADB) Status byte (SB) (1) LSB Acknowledge Table 7. I2C Read-Mode Data-Symbol Description SYMBOL MA1, MA0 DESCRIPTION DEFAULT Address set bits (see Table 3) Power-on reset flag bit POR POR = 1 POR set: Power on POR reset: End-of-data transmission procedure In-lock flag bit FL A2–A0 PLL locked (FL = 1) PLL unlocked (FL = 0) Digital data bits of ADC (see Table 8) Table 8. ADC Level (1) VOLTAGE APPLIED ON ADC INPUT (1) A2 A1 A0 1 0 0 0.6 VCC to VCC 0 1 1 0.45 VCC to 0.6 VCC 0 1 0 0.3 VCC to 0.45 VCC 0 0 1 0.15 VCC to 0.3 VCC 0 0 0 0 to 0.15 VCC Accuracy is 0.03 × VCC. t(High) tr t(Low) SCL thd(STA) tsu(DAT) tf tsu(STA) thd(DAT ) tsu(STO) SDA t(BUF) T0101-01 Figure 16. I2C Timing Chart 12 Submit Documentation Feedback SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 APPLICATION INFORMATION C21 R1 C50 C3 VC1 C1 C38 1 VLOOSCB UHFRFIN2 URF 32 R24 L1 R42 C37 C2 2 VLOOSCC UHFRFIN1 31 3 OSC GND VHFRFIN2 30 4 VHIOSCB VHFRFIN1 29 5 VHIOSCC RF GND 28 6 UHFOSCB1 MIXOUT2 27 R2 C25 C6 C70 C4 VC2 C35 R25 VRF R41 C5 L2 L3 L10 C7 C11 VC3 U1 R22 7 UHFOSCC1 C33 MIXOUT1 26 L9 C8 L4 C31 C9 R5 R33 8 UHFOSCC2 BS4 25 9 UHFOSCB2 BS3 24 FMB 10 IF GND BS2 23 HB 11 IFOUT1 BS1 22 LB 12 IFOUT2 NC 21 ADC 20 AS 19 15 VTU SDA 18 16 XTAL SCL 17 UB C12 R23 C10 R32 C13 IFOUT2 C16 R21 C14 R19 13 VCC R8 C65 C18 C17 ADC R18 14 CP AS R7 C20 R17 R9 C24 C22 X1 SDA R16 SCL C39 VTU VCC NOTE: This application information is advisory, and a performance check is required for actual application circuits. TI assumes no responsibility for the consequences of use of this circuit, such as an infringement of intellectual property rights or other rights, including patents, of third parties. Figure 17. Reference Measurement Circuit Submit Documentation Feedback 13 SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 Table 9. Component Values for Measurement Circuit 14 PART NAME VALUE PART NAME VALUE C1 1p L1 φ3mm, 8T, wire 0.32mm C2 1p L2 φ2.4mm, 4T, wire 0.4mm C3 47p L3 φ3mm, 2T, wire 0.4mm C4 2p L4 φ2mm, 3T, wire 0.4mm C5 3p L9 φ3mm, 15T, wire 0.25mm C6 68p L10 φ3mm, 15T, wire 0.25mm C7 1.5p R1 33k C8 1p R2 33k C9 1p R5 22k C10 1.5p R7 22k C11 100p R8 33k C12 12p R9 22k C13 2.2n R16 330 C14 2.2n R17 330 C16 4.7n R18 330 C17 2.2n R19 330 C18 0.1u R21 0 C20 2.2n R22 20 C21 2.2n R23 20 C22 2.2n R24 20 C24 68p R25 20 C25 open R32 51 C31 4.7n R33 22k C33 22p R41 51 C35 2.2n R42 51 C37 2.2n U1 SN761683B C38 2.2n VC1 1T363A C39 4.7n VC2 1T363A C50 3p VC3 1T363A C65 2.2n X1 Crystal 4 MHz C70 2.2n Submit Documentation Feedback SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 TEST CIRCUITS DUT SG RF IN1 50 W 50 W VIN IF OUT1 RF IN2 Spectrum Analyzer VOUT Diff VOUT IF OUT2 50 W Gc = 20log(VOUT Diff/VIN) = 20log(VOUT/VIN) + 6 50 W S0145-01 Figure 18. Conversion Gain-Measurement Circuit NF Meter Noise Source DUT B0090-01 Figure 19. Noise-Figure Measurement Circuit Signal Generator fdes: P = 80 dBmV Signal Generator Mix Pad fdes ±6 MHz AM 30%, 1 kHz DUT Modulation Analyzer B0091-01 Figure 20. 1% Cross-Modulation Distortion Measurement Circuit Submit Documentation Feedback 15 SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 TYPICAL CHARACTERISTICS Band-Switch Driver Output Voltage (BS1–BS4) 5 VBS − BS Output Voltage − V VCC = 5.5 V VCC = 5 V 4 VCC = 4.5 V 3 2 1 0 −2 −4 −6 −8 −10 −12 −14 −16 −18 −20 IBS − BS Output Current − mA G001 Figure 21. BS Output Current vs Output Voltage S-Parameter 50MHz 400MHz Figure 22. VHF Input 16 Submit Documentation Feedback SN761683B TV TUNER IC www.ti.com SLES180 – MAY 2006 TYPICAL CHARACTERISTICS (continued) 900MHz 300MHz Figure 23. UHF Input 60MHz 30MHz Figure 24. IF Output Submit Documentation Feedback 17 PACKAGE OPTION ADDENDUM www.ti.com 31-Jul-2006 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty Lead/Ball Finish MSL Peak Temp (3) SN761683BDA ACTIVE TSSOP DA 32 46 TBD Call TI Call TI SN761683BDAG4 ACTIVE TSSOP DA 32 46 TBD Call TI Call TI SN761683BDAR ACTIVE TSSOP DA 32 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR SN761683BDARG4 ACTIVE TSSOP DA 32 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR (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 accuracy of such information. Efforts are underway to better integrate information from third parties. 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