STHS2375A, STHS2375L, STHS2376A, STHS2376L, STHS2377A, STHS2377L IEEE 802.3af PoE Powered Device (PD) interface controller Features ■ 8 IEEE 802.3af-compliant interface for Powered Devices (PDs) 1 ■ Integrated 100V, 500mA power MOSFET ■ Resistor-programmable inrush current limit ■ Normal operation current limit 460mA ■ External 25kΩ signature resistor ■ Resistor-programmable classification current (Class 0-4) ■ Power Good output (active-high), open drain ■ Undervoltage Lockout (UVLO) - standard, programmable, and legacy (see Table 1) ■ Voice over IP (VOIP) phones ■ Thermal overload protection ■ Web cameras ■ Latch (L) or auto-retry (A) after hard current overload or repetitive thermal overload ■ WLAN access points ■ Internet appliances ■ Industrial temperature range: –40 to +85°C ■ POS terminals ■ 8-pin SO and 8-pin TSSOP packages ■ RFID readers ■ RoHS compliant Table 1. SO8 (M) TSSOP8 (DW) Applications Device options External signature resistor (1%) UVLO UVLO threshold, rising (V) UVLO threshold, falling (V) Protection mode STHS2375A 24.9kΩ Standard 39.3 30.5 Auto STHS2375L 24.9kΩ Standard 39.3 30.5 Latch STHS2376A 24.9kΩ Programmable 2.49 1.93 Auto STHS2376L 24.9kΩ Programmable 2.49 1.93 Latch STHS2377A 24.9kΩ Legacy 35.1 30.5 Auto STHS2377L 24.9kΩ Legacy 35.1 30.5 Latch Order code July 2007 Rev 4 1/20 www.st.com 1 Contents STHS237x Contents 1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.1 Current limit (ILIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.2 Classification (CLASS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.3 Detection resistor (DET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.4 Ground (VSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.5 Return (RTN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.6 Power Good output (PG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.7 Undervoltage Lockout Input (UVLO, STHS2376A/L only) . . . . . . . . . . . . 7 1.1.8 Power supply (VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 Absolute maximum ratings STHS237xA, STHS237xL . . . . . . . . . . . . . 11 3 Electrical parameters STHS237xA, STHS237xL . . . . . . . . . . . . . . . . . . 12 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2/20 STHS237x List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 STHS2375A/L, STHS2377A/L pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . 6 STHS2376A/L pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Application circuit overview (STHS2375A/L, STHS2377A/L) . . . . . . . . . . . . . . . . . . . . . . . . 8 STHS237xA block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 STHS237xL block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 SO8 – 8-lead plastic small outline, 150 mils width, package outline. . . . . . . . . . . . . . . . . . 16 TSSOP8 – 8-lead, thin shrink small outline, 3x4.4mm, package outline . . . . . . . . . . . . . . 17 3/20 List of tables STHS237x List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. 4/20 Device options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 IEEE802.3af PD power classes and corresponding RCLASS values. . . . . . . . . . . . . . . . . . . 8 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Electrical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 SO8 – 8-lead plastic small outline, 150 mils width, package mechanical data . . . . . . . . . . 16 TSSOP8 – 8-lead, thin shrink small outline, 3x4.4mm, package mechanical data. . . . . . . 17 Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 STHS237x 1 Summary description Summary description The STHS237x is an IEEE802.3af-compliant family of interface controllers for Power over Ethernet (PoE) Powered Device (PD) applications. The devices consist of two main sections: ● The IEEE802.3af interface to the PoE powered RJ-45 wall socket, and ● the Hot Swap Controller (HSC) functions required to protect the PD during insertion, operation, and withdrawal from the RJ-45 socket. These devices have an integrated high voltage power MOSFET (low-side switch) with low RDS ON and the capability to accept transients as high as 100V. Since the pins (such as VDD and VSS) which interface to the RJ-45 socket can routinely see high peak voltages in excess of 100V, it is strongly recommended that board designers protect the PD device with a transient voltage suppressor, such as the SMAJ58A (available from STMicroelectronics), connected between the VDD and VSS pins (see Figure 4 on page 8). The IEEE802.3af-compliant interface includes the basic PD Detection and Classification functions, whereas the 'Hot Swap' functions include other basic features, such as Inrush Current Limiting, Undervoltage Lockout (UVLO), and Thermal Overload Protection. All of the devices include an open drain Power Good (PG) signal to indicate normal steady operation (see Figure 1 on page 6 and Table 2 on page 6). The STHS237x family also incorporates a voltage offset (two series diodes) to accommodate the input diode bridge used to make the PD polarity insensitive. The STHS237x family comprises devices for all the UVLO limits configurations: IEEE standard compliant (STHS2375), programmable (STHS2376) and for legacy systems (STHS2377). See Table 1 on page 1. Each of the basic part types, the STHS2375, STHS2376 and the STHS2377, is available either with Latched Operation (L) Mode or with Automatic Retry (A) Mode after fault conditions. For product options overview see Table 1 on page 1. 5/20 Summary description Figure 1. STHS237x Logic diagram VDD UVLO(1) STHS2375A/L STHS2376A/L STHS2377A/L ILIM CLASS PG RTN DET VSS AI12241 1. STHS2376A/L devices only. Table 2. Signal names Pin Symbol Description 1 ILIM 2 CLASS 3 DET Powered Device Detection resistor 4 VSS Ground on the input side; return power line to PSE 5 RTN Return power output, negative rail 6 PG Power Good Output, open drain, active-high (referenced to RTN) 7 UVLO (1) 8 VDD Inrush Current Limit resistor Classification resistor Programmable Undervoltage Lockout input pin Positive Power Supply; common input/output power rail 1. STHS2376A/L devices only, for other part types No Connect. Figure 2. STHS2375A/L, STHS2377A/L pin connections (top view) VDD ILIM 1 8 CLASS 2 7 NC DET 3 6 PG VSS 4 5 RTN AI12238 Figure 3. STHS2376A/L pin connections (top view) ILIM CLASS 1 8 VDD 2 7 UVLO DET 3 6 PG VSS 4 5 RTN AI12239 6/20 STHS237x Summary description 1.1 Pin descriptions 1.1.1 Current limit (ILIM) Connect a resistor between ILIM and VSS to set the start-up inrush current limit. ILIM = 25 000/RILIM [A]. Practical values of RILIM are between 62.5kΩ and 500kΩ. RILIM = 178kΩ for inrush current of 140mA for compatibility with legacy PSEs. Do not leave open or connect to VSS. 1.1.2 Classification (CLASS) Connect a Classification resistor between this pin and VSS to tell the PSE which power class will be connected. Do not connect this pin directly to VSS. For classification resistor values, see Table 3 on page 8. 1.1.3 Detection resistor (DET) Connect a 24.9kΩ resistor between DET and VDD to allow the PSE to detect the Powered Device properly. 1.1.4 Ground (VSS) This is the return power line on the PSE side (negative). 1.1.5 Return (RTN) This is the return power output on the load side, negative rail. 1.1.6 Power Good output (PG) This pin indicates that the STHS power MOSFET is fully on and works in normal operation mode (Power Good). Open drain, high impedance means that the power is good; in all other cases, the impedance is low (referenced to RTN). 1.1.7 Undervoltage Lockout Input (UVLO, STHS2376A/L only) Connect the tap of the resistor divider between VDD and VSS to set the UVLO voltage limits (see Figure 6 on page 10). Note: STHS2376A/L only, for all other devices, this is No Connect. 1.1.8 Power supply (VDD) This is the Power Input/Output, positive rail. 7/20 Summary description STHS237x IEEE802.3af PD power classes and corresponding RCLASS values Table 3. Class Usage Max. Power at Input of PD (W) Classification Load Current Limits (mA) RCLASS Resistor (Ω, 1%) 0 Default 0.44 to 12.95 0-4 4420 1 Optional 0.44 to 3.84 9-12 953 2 Optional 3.84 to 6.49 17-20 549 3 Optional 6.49 to 12.95 26-30 357 36-44 255 4 Reserved Reserved (1) 1. Class 4 is currently reserved and should not be used. Figure 4. Application circuit overview (STHS2375A/L, STHS2377A/L) RJ-45 TX Pair Data to Ethernet Physical Layer Device 2x DF01S RDET 24.9kΩ, 1% VDD DET SMAJ58A C1 Spare Pair 0.1µF, 100V 100 kΩ PG STHS2375A/L STHS2377A/L ILIM RILIM + C2 To DC/DC Converter 100µF, 100V CLASS RTN VSS Spare Pair RX Pair RCLASS Data to Ethernet Physical Layer Device AI12240a Note: 8/20 This configuration uses either data wires or spare wires for DC power. STHS237x Summary description Figure 5. STHS237xA block diagram 12V VDD 3 DET 2 CLASS 6 PG 5 RTN Detection Comparator + – 8 Classification Comparator 22V 10V Regulator + PG Comparator – Delay 150µs + 1.5V & 10V – S Q R 2.5V 1 = Inrush + UVLO Comp. Thermal Shutdown – UVLO(1) 7 Current Mirror 2.5V ILIM 1 VSS 4 + – 1 = Limiting 1:1 Normal Oper. 1 Ref. + 0 – EN Current Limit Amp. 0.1Ω AI12245a 1. STHS2376A/L devices only. The UVLO comparator is connected directly to the UVLO input pin instead of the internal UVLO divider. For all other devices, pin 7 is NC (No Connect). 9/20 Summary description STHS237x Figure 6. STHS237xL block diagram 12V VDD 3 DET 2 CLASS 6 PG 5 RTN Detection Comparator + – 8 Classification Comparator 22V 10V Regulator + PG Comparator – Delay 150µs + 1.5V & 10V – S Q R 2.5V (1) UVLO + S Current Mirror 1 VSS 4 + – 0 = Fault Q UVLO Comp. Thermal Shutdown, Counter, and Latch – 7 2.5V ILIM R 0 = Inrush 1 = Limiting 1:1 Normal Oper. 1 Ref. + 0 – EN Current Limit Amp. 0.1Ω AI12246a 1. STHS2376A/L devices only. The UVLO comparator is connected directly to the UVLO input pin instead of the internal UVLO divider. For all other devices, pin 7 is NC (No Connect). 10/20 STHS237x 2 Absolute maximum ratings STHS237xA, STHS237xL Absolute maximum ratings STHS237xA, STHS237xL Stressing the device above the rating listed in Table 4: Absolute maximum ratings may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Over the full operating temperature range, unless otherwise noted. Voltages are referenced to the VSS pin. Table 4. Absolute maximum ratings Symbol Parameter Value Unit –0.3 to 100 V –0.3 to 90 V –0.3 to10 V –0.3 to 3 V –0.3 to 12 V 0 to 515 mA 0 to 10 mA 0 to 1 mA 0 to 100 mA 0 to 1 mA 2 kV Voltage VVDD, VRTN VDET, VPG (1) Voltage on the respective pins, referenced to VSS pin VUVLO VILIM (2) VCLASS (2) Current, sinking IRTN IPG Current sunk by the respective pins IDET Current, sourcing ICLASS IILIM Current sourced by the respective pins ESD VHBM ESD Capability, Human body model VCDM ESD Capability, Charged device model 500 V TA Operating ambient temperature range –40 to 85 °C TJ Maximum junction temperature Internally limited °C TSTG Storage temperature –55 to 150 °C TSLD Lead solder temperature for 10 seconds, lead-free lead finish (3) 260 °C Temperature 1. IRTN = 0 2. Voltage output, do not apply external voltage to the CLASS and ILIM pins. 3. Reflow at peak temperature of 260°C (total thermal budget not to exceed 245°C for more than 30 seconds). 11/20 Electrical parameters STHS237xA, STHS237xL 3 STHS237x Electrical parameters STHS237xA, STHS237xL Specifications common for all the STHS237xA/L product family unless otherwise noted. VDD = 48V, RDET = 24.9kΩ, RCLASS = 255Ω, RILIM = 178kΩ, TJ= –40 to 125°C, unless otherwise noted, typical values at 25°C. For the STHS2376x VUVLO = 0V for classification and VUVLO = 5V otherwise. Voltages are referenced to the VSS pin unless otherwise noted. Positive currents are into pins. Table 5. Symbol Electrical parameters Parameter Test conditions Min Typ Max Units 0 57 V 0 5 V 0 450 mA 255 4420 Ω 62.5 500 kΩ 0 10 mA Recommended operating conditions VDD, PG, RTN Input voltage range UVLO IRTN RCLASS RILIM IPG(SINK) Operating current range (sinking) RTN Classification resistor (1), (2) CLASS Inrush current limit programming resistor (2) Sinking current PG = low TJ Operating junction temperature –40 125 °C TA Operating free-air temperature –40 85 °C 1. Classification tested with exact resistor values. A 1% tolerance of classification resistor values is sufficient for compliance with IEEE 802.3af classification current limits. 2. Do not apply external voltage to the CLASS and ILIM pins. 12/20 STHS237x Table 6. Electrical parameters STHS237xA, STHS237xL DC characteristics Symbol Parameter Test conditions Min Typ Max Unit Detection Offset current DET open, VVDD = VRTN = 1.9V, measure IVDD + IRTN 0.3 3 µA Sleep current DET open, VVDD = VRTN = 10.1V, measure IVDD + IRTN 4 12 µA 0.1 5 µA IIL(DET) DET pin leakage current VDET = VVDD = 57V, measure IDET IDET Detection current VRTN = VVDD, RDET = 24.9kΩ, VVDD = 1.4V measure IVDD + IRTN + IDET VVDD = 10.1V 53.7 56 58.3 µA 395 410 417 µA RCLASS = 4420Ω, VVDD = 13 to 21V 2.2 2.4 2.8 mA RCLASS = 953Ω, VVDD = 13 to 21V 10.3 10.6 11.3 mA RCLASS = 549Ω, VVDD = 13 to 21V 17.7 18.3 19.5 mA RCLASS = 357Ω, VVDD = 13 to 21V 27.1 28.0 29.5 mA RCLASS = 255Ω, VVDD = 13 to 21V 38.0 39.4 41.2 mA 10.2 11.3 13.0 V Classification ICLASS Classification current(1) VCL(ON) Classification lower threshold Regulator turns on, VVDD rising VCU(OFF) Classification upper threshold Regulator turns off, VVDD rising 21 21.9 23 V Hysteresis 0.5 0.78 1 V 1 µA 1.0 Ω 15 µA VCU(H) CLASS pin leakage current VCLASS = 0V, VVDD = 57V RDS(ON) On resistance IRTN = 300mA IRTN(L) RTN pin leakage current VVDD = VRTN = 30V (VUVLO = 0V for STHS2376x) ILIM(N) Normal operation current limit VRTN = 1V 405 461 515 mA ILIM(I) Inrush mode current limit VRTN = 2V, RILIM = 178kΩ 100 130 180 mA Inrush current termination(2) VRTN falling, RILIM = 178kΩ, inrush mode to normal operation mode 85 91 100 % Current rise time to inrush(3) RILIM = 69.8kΩ, VRTN-VSS = 5V, IRTN = 30 → 300mA, VVDD increasing past upper UVLO 15 34 IIL(CLASS) Pass device IIL(ILIM) 0.72 ILIM pin leakage current VVDD = 15V, VUVLO = 0V µs 1 µA 10.5 V Power Good (PG) VRTN(LO R) RTN latch off voltage, rising(4) VRTN rising 9.5 10.0 13/20 Electrical parameters STHS237xA, STHS237xL Table 6. DC characteristics (continued) Symbol Parameter PG deglitch VPG(OL) IOL(PG) STHS237x Output low voltage PG pin leakage current Test conditions Min Typ Max Unit 75 150 225 µs IPG = 2mA, VRTN = 34V, VVDD = 38V, VRTN falling 0.12 0.4 V IPG = 2mA, VRTN = 0V, VVDD = 25V, for STHS2376x VUVLO = 0V 0.12 0.4 V VVDD = VPG = 57V, VRTN = 0V 0.1 1 µA Delay rising and falling PG Undervoltage lockout (UVLO) VUVLO(R) VUVLO(F) UVLO Thresholds, STHS2375x VUVLO(H) VUVL(R) VUVLO(F) UVLO Thresholds, STHS2376x VUVLO(H) VUVLO(R) VUVLO(F) UVLO Thresholds, STHS2377x VUVLO(H) IIL(UVLO) UVLO pin leakage current (STHS2376x only) Voltage at VDD pin, VVDD rising 38.4 39.3 40.4 V Voltage at VDD pin, VVDD falling 29.6 30.5 31.5 V Hysteresis 8.3 8.8 9.1 V Voltage at UVLO pin, VUVLO rising 2.43 2.49 2.57 V Voltage at UVLO pin, VUVLO falling 1.87 1.93 1.98 V Hysteresis 0.53 0.56 0.58 V Voltage at VDD pin, VVDD rising 34.1 35.1 36.0 V Voltage at VDD pin, VVDD falling 29.7 30.5 31.4 V Hysteresis 4.3 4.8 V VUVLO = 0 to 5V –1 1 µA 4.5 Thermal shutdown TSHUTDOWN Shutdown temperature(3), temperature rising TSHUTDOWN H Hysteresis(3) 140 °C 20 °C Supply current IDD Operating current 250 450 1. Classification tested with exact resistor values. A 1% tolerance of classification resistor values is sufficient for compliance with IEEE 802.3af classification current limits. 2. Percentage of the intial steady state RTN inrush current value, below which inrush is terminated and PG goes active. 3. Not tested in production. 4. Gradually increase VRTN from 0V until IRTN disappears. 14/20 µA STHS237x 4 Package mechanical data Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 15/20 Package mechanical data Figure 7. STHS237x SO8 – 8-lead plastic small outline, 150 mils width, package outline h x 45˚ A2 A C B ddd e D 8 E H 1 α A1 L SO-A Note: Drawing is not to scale. Table 7. SO8 – 8-lead plastic small outline, 150 mils width, package mechanical data mm inches Symb Typ Min Max Typ Min Max A – 1.35 1.75 – 0.053 0.069 A1 – 0.10 0.25 – 0.004 0.010 B – 0.33 0.51 – 0.013 0.020 C – 0.19 0.25 – 0.007 0.010 D – 4.80 5.00 – 0.189 0.197 ddd – – 0.10 – – 0.004 E – 3.80 4.00 – 0.150 0.157 e 1.27 – – 0.050 – – H – 5.80 6.20 – 0.228 0.244 h – 0.25 0.50 – 0.010 0.020 L – 0.40 0.90 – 0.016 0.035 α – 0° 8° – 0° 8° N 16/20 8 8 STHS237x Package mechanical data Figure 8. TSSOP8 – 8-lead, thin shrink small outline, 3x4.4mm, package outline D 8 5 c E1 1 E 4 α A1 A L A2 L1 CP b e TSSOP8AM Note: Drawing is not to scale. Table 8. TSSOP8 – 8-lead, thin shrink small outline, 3x4.4mm, package mechanical data mm inches Symb Typ Min A Max Min 1.200 A1 0.050 0.150 0.800 1.050 b 0.190 c 0.090 A2 Typ 1.000 CP Max 0.0472 0.0020 0.0059 0.0315 0.0413 0.300 0.0075 0.0118 0.200 0.0035 0.0079 0.0394 0.100 0.0039 D 3.000 2.900 3.100 0.1181 0.1142 0.1220 e 0.650 – – 0.0256 – – E 6.400 6.200 6.600 0.2520 0.2441 0.2598 E1 4.400 4.300 4.500 0.1732 0.1693 0.1772 L 0.600 0.450 0.750 0.0236 0.0177 0.0295 L1 1.000 0 8 α N 0.0394 0 8 8 8 17/20 Part numbering 5 STHS237x Part numbering Table 9. Ordering information scheme Example: STHS 2375A M 6 F Device type STHS Product options 2375A = Standard UVLO, Auto 2375L = Standard UVLO, Latch 2376A = Programmable UVLO, Auto 2376L = Programmable UVLO, Latch 2377A = Legacy UVLO, Auto 2377L = Legacy UVLO, Latch Package M = SO8 (150mils width) DW (1) = TSSOP8 3x4.4mm Temperature range 6 = –40 to 85°C Shipping method F = ECOPACK Package, Tape & Reel E = ECOPACK Package, Tube 1. Contact local ST sales office for availability. For other options, or for more information on any aspect of this device, please contact the ST Sales Office nearest you. 18/20 STHS237x 6 Revision history Revision history Table 10. Document revision history Date Revision Changes 11-Aug-2006 1 Initial release. 19-Dec-2006 2 Updated Features and Table 4. 24-May-2007 3 Formatting changes, updated Table 1, 4, 5, 6. 26-Jul-2007 4 Document status upgraded to full datasheet, updated cover page and Table 9. 19/20 STHS237x Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 20/20