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性能很好的比较器MAX9013

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max9013是MAXIM公司性能很好的比较器,延迟仅有4.5ns左右,正5V供电

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19-1932; Rev 1; 1/02 MAX9010–MAX9013 SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators General Description The MAX9010/MAX9011/MAX9013 single and MAX9012 dual, high-speed comparators operate from a single 4.5V to 5.5V power supply and feature low-current consumption. They have precision differential inputs and TTL outputs. They feature short propagation delay (5ns, typ), low-supply current, and a wide common-mode input range that includes ground. They are ideal for lowpower, high-speed, single-supply applications. The comparator outputs remain stable through the linear region when driven with slow-moving or low input-overdrive signals, eliminating the output instability common to other high-speed comparators. The input voltage range extends to 200mV below ground with no output phase reversal. The MAX9013 features complementary outputs and both the MAX9011/MAX9013 have a latch enable input (LE). The MAX9013 is an improved plug-in replacement for the industry-standard MAX913 and LT1016/LT1116, offering lower power and higher speed when used in a single 5V supply application. For space-critical designs, the single MAX9010 is available in the tiny 6-pin SC70 package. The single MAX9011 is available in a space-saving 6-pin SOT23 package. The dual MAX9012 and the single MAX9013 are available in 8-pin µMAX and 8-pin SO packages. All products in the family are guaranteed over the extended temperature range of -40°C to +85°C. Applications High-Speed Signal Squaring Zero-Crossing Detectors High-Speed Line Receivers High-Speed Sampling Circuits High-Speed Triggers Fast Pulse-Width/Height Discriminators TOP VIEW ____________________________Features o Ultra-Fast, 5ns Propagation Delay o Low Quiescent Current: 900µA (MAX9010/MAX9011) 1.3mA (MAX9013) 2.4mA (MAX9012) o Single-Supply 4.5V to 5.5V Applications o Input Range Extends Below Ground o No Minimum Input Signal Slew-Rate Requirement o No Supply-Current Spikes During Switching o Stable when Driven with Slow-Moving Inputs o No Output Phase Reversal for Overdriven Inputs o TTL-Compatible Outputs (Complementary for MAX9013) o Latch Function Included (MAX9011/MAX9013) o High-Precision Comparators 0.7mV Input Offset Voltage 3.0V/mV Voltage Gain o Available in Tiny 6-Pin SC70 and SOT23 Packages Ordering Information PART TEMP RANGE PINPACKAGE MAX9010EXT-T -40°C to +85°C 6 SC70-6 MAX9011EUT-T -40°C to +85°C 6 SOT23-6 MAX9012EUA -40°C to +85°C 8 µMAX MAX9012ESA -40°C to +85°C 8 SO MAX9013EUA -40°C to +85°C 8 µMAX MAX9013ESA -40°C to +85°C 8 SO Selector Guide appears at end of data sheet. TOP MARK AAA AADD — — — — Pin Configurations OUT 1 GND 2 IN+ 3 +– MAX9010 SC70 6 VCC OUT 1 5 VCC GND 2 4 IN- IN+ 3 +– MAX9011 SOT23 6 VCC INA+ 1 5 LE INA- 2 INB+ 3 INB- 4 4 IN- + _ + _ MAX9012 SO/µMAX 8 VCC VCC 1 7 OUTA IN+ 2 6 OUTB IN- 3 5 GND N.C. 4 _ + MAX9013 SO/µMAX 8 OUT 7 OUT 6 GND 5 LE ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators MAX9010–MAX9013 ABSOLUTE MAXIMUM RATINGS Power Supply (VCC to GND) ...................................-0.3V to +6V Analog Input (IN+ or IN-) to GND...............-0.3V to (VCC + 0.3V) Input Current (IN+ or IN-) .................................................±30mA LE to GND ..................................................-0.3V to (VCC + 0.3V) Continuous Output Current...............................................±40mA Continuous Power Dissipation (TA = +70°C) 6-Pin SC70 (derate 3.1mW/°C above +70°C) .............245mW 6-Pin SOT23 (derate 8.7mW/°C above +70°C)...........696mW 8-Pin µMAX (derate 4.5mW/°C above +70°C) ............362mW 8-Pin SO (derate 5.9mW/°C above +70°C).................471mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°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 in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (MAX9010/MAX9011) (VCC = 5V, VLE = 0 (MAX9011 only), VCM = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Supply Voltage Range Power-Supply Current (Note 2) Input Offset Voltage (Note 3) Input Offset-Voltage Drift Input Bias Current Input Offset Current Differential Input Resistance (Note 4) SYMBOL VCC ICC VOS ∆VOS/∆T IB IOS RIN(DIFF) CONDITIONS Inferred from VOS tests TA = +25°C TA = TMIN to TMAX VIN(DIFF) = ±10mV MIN TYP MAX UNITS 4.5 5.5 V 0.90 2.1 mA ±1 ±5 mV ±7 ±2 µV/°C ±0.5 ±2 µA ±40 ±200 nA 250 kΩ Common-Mode Input Resistance (Note 4) RIN(CM) -0.2V ≤ VCM ≤ (VCC - 1.9V) 1 MΩ Common-Mode Input Voltage Range (Note 4) VCM Inferred from VOS tests -0.2 VCC - 1.9 V Common-Mode Rejection Ratio Power-Supply Rejection Ratio Small-Signal Voltage Gain Output Low Voltage Output High Voltage Output Short-Circuit Current CMRR PSRR AV VOL VOH IOUT -0.2V ≤ VCM ≤ (VCC - 1.9V) VCC = 4.5V to 5.5V 1V ≤ VOUT ≤ 2V VIN ≥ 100mV VIN ≥ 100mV, VCC = 4.5V Sinking Sourcing ISINK = 0 ISINK = 4mA ISOURCE = 0 ISOURCE = 4mA 95 dB 82 dB 3000 V/V 0.3 0.5 V 0.5 0.6 2.7 3.3 V 2.4 2.9 20 mA 30 Latch Enable Pin High Input Voltage VIH MAX9011 only 2 V Latch Enable Pin Low Input Voltage VIL MAX9011 only 0.8 V Latch Enable Pin Bias Current IIH, IIL MAX9011 only, VLE = 0 and VLE = 5V ±25 µA 2 _______________________________________________________________________________________ MAX9010–MAX9013 SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators ELECTRICAL CHARACTERISTICS (MAX9010/MAX9011) (continued) (VCC = 5V, VLE = 0 (MAX9011 only), VCM = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Latch Setup Time (Note 8) Latch Hold Time (Note 8) Latch Propagation Delay (Note 8) Input Noise-Voltage Density Propagation Delay (Note 6) Output Rise Time Output Fall Time Input Capacitance Power-Up Time SYMBOL tSU tH CONDITIONS MAX9011 only MAX9011 only MIN TYP MAX UNITS 2 0 ns 2 0.5 ns tLPD MAX9011 only 5 ns en tPD+, tPD- tR tF CIN tON f = 100kHz CLOAD = 5pF, TA = +25°C CLOAD = 5pF, TA = TMIN to TMAX 0.5V ≤ VOUT ≤ 2.5V 2.5V ≥ VOUT ≥ 0.5V MAX9010EXT MAX9011EUT VOVERDRIVE = 100mV VOVERDRIVE = 5mV VOVERDRIVE = 100mV VOVERDRIVE = 5mV 6 nV/√Hz 5 8 5.5 9 ns 9 10 3 ns 2 ns 0.8 pF 1.2 1 µs ELECTRICAL CHARACTERISTICS (MAX9012/MAX9013) (VCC = 5V, VLE = 0 (MAX9013 only), VCM = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Supply Voltage Range Power-Supply Current (Note 2) Input Offset Voltage (Note 5) Input Offset-Voltage Drift Input Bias Current Input Offset Current Differential Input Resistance (Note 4) SYMBOL VCC ICC VOS ∆VOS/∆T IB IOS CONDITIONS Inferred from PSRR test MAX9012 MAX9013 TA = +25°C TA = TMIN to TMAX RIN(DIFF) VIN(DIFF) = ±10mV MIN TYP MAX UNITS 4.5 5.5 V 2.4 4.2 mA 1.3 2.3 ±0.7 ±3 mV ±5.5 ±2 µV/°C ±0.5 ±2 µA ±40 ±200 nA 250 kΩ Common-Mode Input Resistance (Note 4) RIN(CM) -0.2V ≤ VCM ≤ (VCC - 1.9V) 1 MΩ Common-Mode Input Voltage Range (Note 4) VCM Inferred from CMRR test -0.2 VCC - 1.9 V Common-Mode Rejection Ratio CMRR -0.2V ≤ VCM ≤ (VCC - 1.9V) 75 95 dB Power-Supply Rejection Ratio PSRR VCC = 4.5V to 5.5V 63 82 dB _______________________________________________________________________________________ 3 MAX9010–MAX9013 SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators ELECTRICAL CHARACTERISTICS (MAX9012/MAX9013) (continued) (VCC = 5V, VLE = 0 (MAX9013 only), VCM = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Small-Signal Voltage Gain Output Low Voltage Output High Voltage Output Short-Circuit Current SYMBOL AV VOL VOH IOUT CONDITIONS 1V ≤ VOUT ≤ 2V VIN ≥ 100mV ISINK = 0 ISINK = 4mA VIN ≥ 100mV, VCC = 4.5V ISOURCE = 0 ISOURCE = 4mA Sinking Sourcing MIN 1000 2.7 2.4 TYP 3000 0.3 0.5 3.3 2.9 20 30 MAX 0.5 0.6 UNITS V/V V V mA Latch Enable Pin High Input Voltage VIH MAX9013 only 2 V Latch Enable Pin Low Input Voltage VIL MAX9013 only 0.8 V Latch Enable Pin Bias Current Input Noise-Voltage Density Propagation Delay (Note 6) Differential Propagation Delay (Notes 6, 7) IIH, IIL en tPD+, tPD- ∆tPD± MAX9013 only VLE = 0 and VLE = 5V f = 100kHz CLOAD = 5pF, TA = +25°C VOVERDRIVE = 100mV VOVERDRIVE = 5mV CLOAD = 5pF, TA = TMIN to TMAX VOVERDRIVE = 100mV VOVERDRIVE = 5mV VIN = 100mV step, CLOAD = 5pF, VOD = 5mV ±25 µA 6 nV/√Hz 5 8 5.5 9 ns 9 10 2 3 ns Channel-to-Channel Propagation Delay (Note 6) ∆tPD(ch-ch) MAX9012 only, VIN = 100mV step, CLOAD = 5pF, VOD = 5mV 500 ps Output Rise Time Output Fall Time Latch Setup Time (Note 8) Latch Hold Time (Note 8) tR 0.5V ≤ VOUT ≤ 2.5V tF 2.5V ≥ VOUT ≥ 0.5V tSU MAX9013 only tH MAX9013 only 3 ns 2 ns 2 0 ns 2 0.5 ns Latch Propagation Delay (Note 8) tLPD MAX9013 only 5 ns Input Capacitance MAX9012EUA/MAX9013EUA CIN MAX9012ESA/MAX9013ESA 1.5 pF 2 Power-Up Time tON 1 µs Note 1: All specifications are 100% tested at TA = +25°C; temperature limits are guaranteed by design. Note 2: Quiescent Power-Supply Current is slightly higher with the comparator output at VOL. This parameter is specified with the worst- case condition of VOUT = VOL for the MAX9010/MAX9011 and both outputs at VOL for the MAX9012. For the MAX9013, which has complementary outputs, the power-supply current is specified with either OUT = VOL, OUT = VOH or OUT = VOH, OUT = VOL (power-supply current is equal in either case). Note 3: Input Offset Voltage is tested and specified with the Input Common-Mode Voltage set to either extreme of the Input Common- Mode Voltage Range (-0.2V to (VCC - 1.9V)) and with the Power-Supply Voltage set to either extreme of the Power-Supply Voltage Range (4.5V to 5.5V). 4 _______________________________________________________________________________________ MAX9010–MAX9013 SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators Note 4: Although Common-Mode Input Voltage Range is restricted to -0.2V ≤ VCM ≤ (VCC - 1.9V), either or both inputs can go to either absolute maximum voltage limit, i.e., from -0.3V to (VCC + 0.3V), without damage. The comparator will make a correct (and fast) logic decision provided that at least one of the two inputs is within the specified common-mode range. If both inputs are outside the common-mode range, the comparator output state is indeterminate. Note 5: For the MAX9012, Input Offset Voltage is defined as the input voltage(s) required to make the OUT output voltage(s) remain stable at 1.4V. For the MAX9013, it is defined as the average of two input offset voltages, measured by forcing first the OUT output, then the OUT output to 1.4V. Note 6: Propagation delay for these high-speed comparators is guaranteed by design because it cannot be accurately measured with low levels of input overdrive voltage using automatic test equipment in production. Note that for low overdrive conditions, VOS is added to the overdrive. Note 7: Differential Propagation Delay, measured either on a single output of the MAX9012/MAX9013 (or between OUT and OUT outputs on the MAX9013) is defined as: ∆tPD(±) = |(tPD+) - (tPD-)|. Note 8: Latch times are guaranteed by design. Latch setup time (tSU) is the interval in which the input signal must be stable prior to asserting the latch signal. The hold time (tH) is the interval after the latch is asserted in which the input signal must remain stable. Latch propagation delay (tLPD) is the delay time for the output to respond when the latch enable pin is deasserted (see Figure 1). PROPAGATION DELAY (ns) MAX9010–13 toc03 (VCC = 5V, CL = 15pF, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics 0 IN -100mV 3V RESPONSE TO +5mV OVERDRIVE MAX9010–13 toc01 +100mV IN 0 3V RESPONSE TO -5mV OVERDRIVE MAX9010–13 toc02 OUT 0 IN: 50mV/div OUT: 1V/div t = 5ns/div OUT 0 IN: 50mV/div OUT: 1V/div t = 5ns/div PROPAGATION DELAY vs. INPUT OVERDRIVE 6.0 5.5 tPD(+) 5.0 4.5 tPD(-) 4.0 3.5 3.0 1 10 100 OVERDRIVE (mV) _______________________________________________________________________________________ 5 SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators MAX9010–13 toc03 MAX9010–MAX9013 MAX9010–13 toc09 Typical Operating Characteristics (continued) (VCC = 5V, CL = 15pF, TA = +25°C, unless otherwise noted.) PROPAGATION DELAY (ns) 45 40 35 30 25 20 15 10 5 0 10 PROPAGATION DELAY vs. SOURCE RESISTANCE tPD(+) tPD(-) 100 1k 10k SOURCE RESISTANCE (Ω) RESPONSE TO 50MHz ±10mV SINE WAVE MAX9010–13 toc07 A 0 MAX9010–13 toc04 PROPAGATION DELAY (ns) PROPAGATION DELAY vs. LOAD CAPACITANCE 8.0 7.5 7.0 tPD(-) 6.5 6.0 5.5 tPD(+) 5.0 4.5 4.0 10 20 30 40 50 60 LOAD CAPACITANCE (pF) RESPONSE TO 10kHz TRIANGLE WAVE MAX9010–13 toc08 A 0 MAX9010–13 toc05 PROPAGATION DELAY (ns) PROPAGATION DELAY vs. INPUT OVERDRIVE 6.0 5.5 tPD(+) 5.0 4.5 tPD(-) 4.0 3.5 3.0 1 10 100 OVERDRIVE (mV) OFFSET VOLTAGE vs. TEMPERATURE -0.3 -0.4 -0.5 OFFSET VOLTAGE (mV) -0.6 B B -0.7 0 0 -0.8 MAX9010–13 toc12 10ns/div A: Input, 10mV/div B: Output, 2V/div 20µs/div A: Input, 20mV/div B: Output, 2V/div -0.9 -40 -15 10 35 60 85 TEMPERATURE (°C) SUPPLY CURRENT vs. SUPPLY VOLTAGE (PER COMPARATOR) 3.0 2.5 2.0 TA = +85°C TA = +25°C 1.5 1.0 TA = -40°C 0.5 MAX9010–13 toc10 INPUT BIAS CURRENT (µA) INPUT BIAS CURRENT vs. TEMPERATURE 0.7 0.6 VCM = -0.2V 0.5 0.4 VCM = 3.1V 0.3 MAX9010–13 toc11 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE vs. DIFFERENTIAL INPUT VOLTAGE 2.5 TA = +25°C 2.0 TA = +85°C 1.5 1.0 0.5 TA = -40°C ICC (mA) 0 4.50 4.75 5.00 5.25 5.50 5.75 6.00 VCC (V) 0.2 -40 -15 10 35 60 85 TEMPERATURE (°C ) 0 -3 -2 -1 0 1 2 3 DIFFERENTIAL INPUT VOLTAGE (mV) 6 _______________________________________________________________________________________ SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators MAX9010–MAX9013 MAX9010 1 2 3 4 PIN MAX9011 MAX9012 1 — 2 5 3 — 4 — MAX9013 7 6 2 3 5, 6 6 8 1 — 5 — 5 — — 1 — — — 2 — — — 3 — — — 4 — — — 6 — — — 7 — — — — 4 — — — 8 NAME OUT GND IN+ IN- VCC LE INA+ INAINB+ INBOUTB OUTA N.C. OUT Pin Description FUNCTION Comparator Output. OUT is high when IN+ is more positive than IN-. Ground Noninverting Input Inverting Input Positive Power-Supply Voltage. Pins 5 and 6 of the MAX9010 must BOTH be connected to the powersupply rail. Bypass with a 0.1µF capacitor. Latch Enable Input Noninverting Input, Channel A Inverting Input, Channel A Noninverting Input, Channel B Inverting Input, Channel B Comparator Output, Channel B Comparator Output, Channel A No Connection. Not internally connected. Connect to GND for best results. Comparator Complementary Output Detailed Description These high-speed comparators have a unique design that prevents oscillation when the comparator is in its linear region, so no minimum input slew rate is required. Many high-speed comparators oscillate in their linear region. One common way to overcome this oscillation is to add hysteresis, but it results in a loss of resolution and bandwidth. Latch Function The MAX9011/MAX9013 provide a TTL-compatible latch function that holds the comparator output state (Figure 1). With LE driven to a TTL low or grounded, the latch is transparent and the output state is determined by the input differential voltage. When LE is driven to a TTL high, the existing output state is latched, and the input differential voltage has no further effect on the output state. Input Amplifier A comparator can be thought of as having two sections: an input amplifier and a logic interface. The input amplifiers of these devices are fully differential, with input offset voltages typically 0.7mV at +25°C. Input common-mode range extends from 200mV below ground to 1.9V below the positive power-supply rail. The total common-mode range is 3.3V when operating from a 5V supply. The amplifiers have no built-in hysteresis. For highest accuracy, do not add hysteresis. Figure 2 shows how hysteresis degrades resolution. Input Voltage Range Although the common-mode input voltage range is restricted to -0.2V to (VCC - 1.9V), either or both inputs can go to either absolute maximum voltage limit, i.e., from -0.3V to (VCC + 0.3V), without damage. The comparator will make a correct (and fast) logic decision provided that at least one of the two inputs is within the specified common-mode range. If both inputs are outside the common-mode range, the comparator output state is indeterminate. Resolution A comparator’s ability to resolve a small-signal difference, its resolution, is affected by various factors. As with most amplifiers and comparators, the most significant factors are the input offset voltage (VOS) and the common-mode and power-supply rejection ratios (CMRR, PSRR). If source impedance is high, input offset current can be significant. If source impedance is unbalanced, the input bias current can introduce another error. For high-speed comparators, an addi- _______________________________________________________________________________________ 7 MAX9010–MAX9013 SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators VIN (DIFFERENTIAL) LATCH ENABLE (LE) tPD+ OUT Figure 1. Timing Diagram IN+ IN- tSU tH HYSTERESIS BAND* OUT WITH HYSTERESIS IDEAL (WITHOUT HYSTERESIS) * WHEN HYSTERESIS IS ADDED, A COMPARATOR CANNOT RESOLVE ANY INPUT SIGNAL WITHIN THE HYSTERESIS BAND. Figure 2. Effect of Hysteresis on Input Resolution tional factor in resolution is the comparator’s stability in its linear region. Many high-speed comparators are useless in their linear region because they oscillate. This makes the differential input voltage region around zero unusable. Hysteresis helps to cure the problem but reduces resolution (Figure 2). The devices do not oscillate in the linear region and require no hysteresis, which greatly enhances their resolution. Applications Information Power Supplies, Bypassing, and Board Layout These products operate over a supply voltage range of 4.5V to 5.5V. Bypass VCC to GND with a 0.1µF surfacemount ceramic capacitor. Mount the ceramic capacitor as close as possible to the supply pin to minimize lead inductance. As with all high-speed components, careful attention to board layout is essential for best performance. Use a PC board with an unbroken ground plane. Pay close attention to the bandwidth of bypass components and place them as close as possible to the device. Minimize the trace length and area at the comparator inputs. If the source impedance is high, take the utmost care in minimizing its susceptibility to pickup of unwanted signals. Input Slew Rate Most high-speed comparators have a minimum input slew-rate requirement. If the input signal does not transverse the region of instability within a propagation delay of the comparator, the output can oscillate. This makes many high-speed comparators unsuitable for processing either slow-moving signals or fast-moving signals with low overdrive. The design of these devices eliminates the minimum input slew-rate requirement. They are excellent for circuits from DC up to 200MHz, even with very low overdrive, where small signals need to be resolved. 8 _______________________________________________________________________________________ MAX9010–MAX9013 SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators Selector Guide PART MAX9010 MAX9011 MAX9012 MAX9013 COMPARATORS LATCH 1 No 1 Yes 2 No 1 Yes COMPLEMENTARY OUTPUTS No No No Yes Chip Information MAX9010 TRANSISTOR COUNT: 106 MAX9011 TRANSISTOR COUNT: 137 MAX9012 TRANSISTOR COUNT: 212 MAX9013 TRANSISTOR COUNT: 145 PROCESS: Bipolar Package Information SC70, 6L.EPS _______________________________________________________________________________________ 9 MAX9010–MAX9013 6LSOT.EPS SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators Package Information (continued) 10 ______________________________________________________________________________________ 8LUMAXD.EPS MAX9010–MAX9013 SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators Package Information (continued) ______________________________________________________________________________________ 11 SC70, 5ns, Low-Power, Single-Supply, Precision TTL Comparators Package Information (continued) MAX9010–MAX9013 SOICN.EPS Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. This datasheet has been downloaded from: www.EEworld.com.cn Free Download Daily Updated Database 100% Free Datasheet Search Site 100% Free IC Replacement Search Site Convenient Electronic Dictionary Fast Search System www.EEworld.com.cn All Datasheets Cannot Be Modified Without Permission Copyright © Each Manufacturing Company

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