TP8485E-SR

3PEAK TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Features Description  Exceeds Requirements of EIA-485 Standard The TP8485E are IEC61000 ESD protected, 3V~5.5V  Hot Plug Circuitry - Tx and Rx Outputs Remain powered transceivers that meet the RS-485 and RS-422 Three-State During Power-up/Power-down standards for balanced communication. Driver outputs and receiver inputs are protected against ±18kV ESD  Data Rate: 300 bps to 250 kbps  Full Fail-safe (Open, Short, Terminated) Transmitters in this family deliver exceptional differential Receivers output voltages (2.5V min/5Vcc), into the RS-485 required  Up to 256 Nodes on a Bus (1/8 unit load) 54Ω load, for better noise immunity, or to allow up to eight  Wide Supply Voltage 3V to 5.5V 120Ω terminations in “star” topologies. These devices  SOIC-8 Package for Backward Compatibility have very low bus currents so they present a true “1/8 unit  Bus-Pin Protection: strikes without latch-up. load” to the RS-485 bus. This allows up to 256 transceivers on the network without using repeaters. – ±18 kV HBM protection Receiver (Rx) inputs feature a “Full Fail-Safe” design, – ±13 kV IEC61000-4-2 Contact Discharge which ensures a logic high Rx output if Rx inputs are – +4 kV IEC61000-4-4 Fast Transient Burst floating, shorted, or on a terminated but undriven bus. Rx Applications outputs feature high drive levels - typically 25mA @ VOL = 1V (to ease the design of optocoupled isolated  E-Metering Networks interfaces).  Industrial Automation The TP8485E is available in an SOIC-8 and MSOP-8  HVAC Systems package, and is characterized from –40°C to 125°C.  Process Control  DMX512-Networks  Battery-Powered Applications 3PEAK and the 3PEAK logo are registered trademarks of 3PEAK INCORPORATED. All other trademarks are the property of their respective owners. Pin Configuration (Top View) Exceptional Tx Drives Up To 256 Loads While Still Delivering 2.5V VOD TP8485E 8-Pin SOIC/MSOP -S and -V Suffixes R 1 8 VCC RE 2 7 B/Z DE 3 6 A/Y D 4 5 GND Driver Output Current (mA) 100 90 80 +25 ℃ 70 RD=15Ω 60 +85 ℃ 50 RD=54Ω 40 RD=20Ω 30 20 RD=100Ω 10 0 0.5 1 1.5 2 2.5 3 3.5 Differential Output Voltage (V) www.3peakic.com.cn Rev. A.01 1 TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Order Information Model Name Order Number Package Transport Media, Quantity Marking Information TP8485E TP8485E-SR 8-Pin SOIC Tape and Reel, 4,000 TP8485E TP8485E TP8485E-VR 8-Pin MSOP Tape and Reel, 3,000 TP8485E DRIVER PIN FUNCTIONS INPUT ENABLE D DE OUTPUTS A DESCRIPTION B NORMAL MODE H H H L Actively drives bus High L H L H Actively drives bus Low X L Z Z Driver disabled X OPEN Z Z Driver disabled by default OPEN H H L Actively drives bus High RECEIVER PIN FUNCTIONS DIFFERENTIAL INPUT ENABLE OUTPUT VID = VA – VB /RE R DESCRIPTION NORMAL MODE 2 VIT+ < VID L H Receive valid bus High VIT– < VID < VIT+ L ? Indeterminate bus state VID < VIT– L L Receive valid bus Low X H Z Receiver disabled X OPEN Z Receiver disabled Open, short, idle Bus L ? Indeterminate bus state Rev. A.01 www.3peakic.com.cn TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Absolute Maximum Ratings VDD to GND.......................................................................................................................................-0.3V to +7V Input Voltages DI, DE, RE………………………………………………………………………….…………………….....-0.3V to (VCC + 0.3V) Input/Output Voltages A/Y, B/Z, A, B, Y, Z………………………………………………………………………..………………. -15V to +15V A/Y, B/Z, A, B, Y, Z (Transient Pulse Through 100Ω, Note 1)………………………………………………………………………………………….……….…… ±100V RO……………………………………………………………………………………………………………. -0.3V to (VCC +0.3V) Short Circuit Duration Y, Z…………………………………………………………………………………………………………….Continuous ESD Rating………………………………………………………………………………………………….. See Specification Table Recommended Operating Conditions Note 2 Supply Voltage………………………………………………………………………………….…………….3V~5.5V Temperature Range…………………………………………………………………………………….……-40°C to +125°C Bus Pin Common Mode Voltage Range …………………………………………………………….…… -8V to +13V Thermal Resistance, ΘJA (Typical) 8-Pin SOIC Package ……………………………………………………………….…………………..……158°C/W Maximum Junction Temperature (Plastic Package) ………………………………………….………….+150°C Maximum Storage Temperature Range …………………………………………………………………. -65°C to +150°C Note 1: Tested according to TIA/EIA-485-A, Section 4.2.6 (±100V for 15μs at a 1% duty cycle). Note 2: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. www.3peakic.com.cn Rev. A.01 3 TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Electrical Characteristics Test Conditions: VCC = 5V, Over operating free-air temperature range(unless otherwise noted) PARAMETER CONDITIONS RL = 60 Ω |VOD| Driver differential-output voltage magnitude See Figure 1B RL = 54 Ω with VA or VB from –7 to +12 V, VCC = 5V (RS-485) RL = 54 Ω with VA or VB from –7 to +12 V, VCC = 3V (RS-485) MIN VOC(SS) ⊿VOC Change in magnitude of driver differential-output voltage 2.1 Steady-stage common-mode output voltage Change in differential driver common-mode output voltage Center of two 27 Ω load resistors UNITS 2.5 V See Figure 1A 1.4 1.5 3 RL = 54 Ω, CL=50 pF, VCC = 5V MAX 2.6 RL = 100 Ω(RS-422) ⊿|VOD| TYP See Figure 1A See Figure 1A -0.02 -0.002 0.03 Vcc/20.2 VCC/2 Vcc/2 +0.2 -0.2 0 0.2 V V mV VOC(PP) Peak-to-peak driver common-mode output voltage 500 COD Differential output capacitance 8 VIT+ Positive-going receiver differential-input voltage threshold -75 -50 -45 mV VIT- Negative-going receiver differential-input voltage threshold -185 -160 -145 mV VHYS(1) Receiver differential-input voltage threshold hysteresis (VIT+ – VIT– ) 100 110 120 mV VOH Receiver high-level output voltage IOH= -8 mA 4.640 4.650 4.690 V VOL Receiver low-level output voltage IOL= 8 mA 0.240 0.240 0.270 V II Driver input, driver enable and receiver enable input current 0.007 0.01 0.012 μA IOZ Receiver high-impedance output current VO = 0 V or VCC, /RE at VCC -0.005 0.01 0.011 μA |IOS| Driver short-circuit output current │IOS│ with VA or VB from –7 to +12 V 75 80 115 mA II Bus input current(driver disabled) VCC = 4.5 to 5.5 V or VCC = 0 V, DE at 0 V ICC 4 VI= 12 V 47 50 53 VI= -7 V -53 -50 -47 Driver and receiver enabled DE = VCC, /RE = GND, No LOAD 640 695 930 Driver enabled, receiver disabled DE = VCC, /RE = VCC, No LOAD 210 270 280 Driver disabled, receiver enabled DE = GND, /RE = VCC, No LOAD 440 480 530 Driver and receiver disabled DE = GND, /RE = VCC, D= Vcc No LOAD 0.7 1.4 1.5 Supply current(quiescent) Supply current(dynamic) Rev. A.01 pF μA μA See www.3peakic.com.cn TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Switching CHARACTERISTICS 3.3ms > bit time> 4μs(unless otherwise noted)s PARAMETER CONDITIONS MIN TYP MAX UNITS DRIVER tr, tf tPHL, tPLH tSK(P) Driver differential-output rise and fall times 620 RL = 54 Ω, CL=50pF Driver propagation delay See Figure 2 Driver pulse skew, |tPHL – tPLH| 23 tPHZ, tPLZ Driver disable time 250 tPHZ, tPLZ Driver enable time Receiver enabled See Figure 3 Receiver disabled ns 340 ns 562 ns 562 RECEIVER tr, tf Receiver output rise and fall times tPHL, tPLH Receiver propagation delay time 12.4 960 CL=15 pF See Figure 5 ns tSK(P) Receiver pulse skew, |tPHL – tPLH| 40 tPHZ, tPLZ Receiver disable time 7 tPZL(1), tPZH(1) tPZL(2), tPZH(2) Driver enabled See Figure 6 ns 70 Receiver enable time ns Driver disabled See Figure 6 989 ESD IEC61000-4-2,Air-Gap Discharge RS-485 Method Pins (A, Y, IEC61000-4-2, Contact Discharge B, Z, A/Y, Method B/Z) Human Body Model, From Bus Pins to GND ±18 kV ±13 kV ±18 kV ±4 kV All Other Human Body Model, per MIL-STD-883 Pins www.3peakic.com.cn Rev. A.01 5 TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Test Circuits and Waveforms Vcc RL/2 DE Vcc Z DI D Z DI VOD Y 375Ω DE D VOD RL=60Ω Y RL/2 VOC 375Ω FIGURE 1A. VOD AND VOC FIGURE 1B. VOD WITH COMMON MODE LOAD FIGURE 1. DC DRIVER TEST CIRCUITS 3V CL=100pF Vcc DI DE DI 1.5V 1.5V 0V tPLH Z D Y RDIFF CL=100pF OUT(Z) VOH OUT(Y) VOL DIFF OUT(Y-Z) SIGNAL GENERATOR tPHL 90% +VOD 90% 10% tR 10% tF -VOD SKEW=|tPLH-tPHL| FIGURE 2A. TEST CIRCUIT FIGURE 2B. MEASUREMENT POINTS FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES DE DI Z 500Ω D SIGNAL GENERATOR Y SW CL VCC GND DE PARAMETER OUTPUT RE DI 3V NOTE 10 CL tZH,tZH(SHDN) (pF) NOTE 10 SW OUT(Y,Z) tHZ Y/Z X 1/0 GND 15 tLZ Y/Z X 0/1 VCC 15 tZL,tZL(SHDN) tZH Y/Z 0 (Note 9) 1/0 GND 100 NOTE 10 tZL Y/Z 0 (Note 9) 0/1 VCC 100 tZH(SHDN) Y/Z 1 (Note 12) 1/0 GND 100 tZL(SHDN) Y/Z 1 (Note 12) 0/1 VCC 100 FIGURE 3A. TEST CIRCUIT OUT(Y,Z) 1.5V 1.5V 0V tHZ OUTPUT HIGH VOL-0.5V VOH 2.3V 0V tLZ 2.3V VCC VOL+0.5V VOL OUTPUT LOW FIGURE 3B. MEASUREMENT POINTS FIGURE 3. DRIVER ENABLE AND DISABLE TIMES 6 Rev. A.01 www.3peakic.com.cn TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Test Circuits and Waveforms(continue) Vcc DE DI + Z 60Ω D CD Y 3V VOD - DI 0V SIGNAL GENERATOR DIFF OUT(Y-Z) FIGURE 4A. TEST CIRCUIT +VOD -VOD 0V FIGURE 4B. MEASUREMENT POINTS FIGURE 4. DRIVER DATA RATE RE B R A 0V RO 15pF +1.5V A 0V 0V -1.5V tPLH SIGNAL GENERATOR tPHL VCC RO FIGURE 5A. TEST CIRCUIT 1.5V 1.5V 0V FIGURE 5B. MEASUREMENT POINTS FIGURE 5. RECEIVER PROPAGATION DELAY AND DATA RATE SIGNAL GENERATOR RE B GND A R 1kΩ RO VCC SW GND 15pF NOTE 10 RE PARAMETER tHZ DE 0 A +1.5V SW tZH,tZH(SHDN) GND NOTE 10 RO tLZ 0 -1.5V VCC tZH(Note 10) 0 +1.5V GND tZL,tZL(SHDN) tZL(Note 10) 0 -1.5V VCC NOTE 10 tZH(SHDN)(Note 13) tZL(SHDN)(Note 13) 0 0 +1.5V -1.5V GND VCC FIGURE 6A. TEST CIRCUIT RO 3V 1.5V 1.5V 0V tHZ OUTPUT HIGH 1.5V VOH-0.5V VOH 0V tLZ 1.5V VCC VOL+0.5V VOL OUTPUT LOW FIGURE 6B. MEASUREMENT POINTS FIGURE 6. RECEIVER ENABLE AND DISABLE TIMES www.3peakic.com.cn Rev. A.01 7 TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Detailed Description RS-485 and RS-422 are differential (balanced) data transmission standards used for long haul or noisy environments. RS-422 is a subset of RS-485, so RS-485 transceivers are also RS-422 compliant. RS-422 is a point-to-multipoint (multidrop) standard, which allows only one driver and up to 10 (assuming one unit load devices) receivers on each bus. RS-485 is a true multipoint standard, which allows up to 32 one unit load devices (any combination of drivers and receivers) on each bus. To allow for multipoint operation, the RS-485 specification requires that drivers must handle bus contention without sustaining any damage. Another important advantage of RS-485 is the extended common mode range (CMR), which specifies that the driver outputs and receiver inputs withstand signals that range from +12V to -7V. RS-422 and RS-485 are intended for runs as long as 4000’, so the wide CMR is necessary to handle ground potential differences, as well as voltages induced in the cable by external fields. Receiver (Rx) Features TP8485E utilize a differential input receiver for maximum noise immunity and common mode rejection. Input sensitivity is better than ±200mV, as required by the RS-422 and RS-485 specifications. Rx outputs feature high drive levels (typically 25mA @ VOL = 1V) to ease the design of optically coupled isolated interfaces. Receiver input resistance of 100kΩ surpasses the RS-422 specification of 4kΩ, and is eight times the RS-485 “Unit Load (UL)” requirement of 12kΩ minimum. Thus, these products are known as “one-eighth UL” transceivers, and there can be up to 256 of these devices on a network while still complying with the RS-485 loading specification. Rx inputs function with common mode voltages as great as ±7V outside the power supplies (i.e., +12V and -7V), making them ideal for long networks where induced voltages are a realistic concern. All the receivers include a “full fail-safe” function that guarantees a high level receiver output if the receiver inputs are unconnected (floating), shorted together, or connected to a terminated bus with all the transmitters disabled. Receivers easily meet the data rates supported by the corresponding driver, and all receiver outputs are three-stable via the active low RE input. Driver (Tx) Features TP8485E driver is a differential output device that delivers at least 2.5V across a 54Ω load (RS-485), and at least 2.8V across a 100Ω load (RS-422). The drivers feature low propagation delay skew to maximize bit width, and to minimize EMI, and all drivers are three-stable via the active high DE input. Full Fail-Safe All the receivers include a “full fail-safe” function that guarantees a high level receiver output if the receiver inputs are unconnected (floating), shorted together, or connected to a terminated bus with all the transmitters disabled. Receivers easily meet the data rates supported by the corresponding driver, and all receiver outputs are three-statable via the active low RE input. Hot Plug Function When a piece of equipment powers up, there is a period of time where the processor or ASIC driving the RS-485 control lines (DE, RE) is unable to ensure that the RS-485 Tx and Rx outputs are kept disabled. If the equipment is connected to the bus, a driver activating prematurely during power-up may crash the bus. To avoid this scenario, the TP8485E devices incorporate a “Hot Plug” function. Circuitry monitoring VCC ensures that, during power-up and power-down, the Tx and Rx outputs remain disabled, regardless of the state of DE and RE, if VCC is less than ~2.5V. This gives the processor/ASIC a chance to stabilize and drive the RS-485 control lines to the proper states. 8 Rev. A.01 www.3peakic.com.cn TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver COMPETITOR FIGURE 8. HOT PLUG PERFORMANCE (TP8485E) vs Competitor WITHOUT HOT PLUG CIRCUITRY ESD Protection All pins on these devices include 4kV Human Body Model (HBM) ESD protection structures, but the RS-485 pins (driver outputs and receiver inputs) incorporate advanced structures allowing them to survive ESD events in excess of ±18kV HBM and ±13kV (1/2 duplex) IEC61000-4-2. The RS-485 pins are particularly vulnerable to ESD strikes because they typically connect to an exposed port on the exterior of the finished product. Simply touching the port pins, or connecting a cable, can cause an ESD event that might destroy unprotected ICs. These new ESD structures protect the device whether or not it is powered up, and without degrading the RS-485 common mode range of -8V to +13V. This built-in ESD protection eliminates the need for board level protection structures (e.g., transient suppression diodes), and the associated, undesirable capacitive load they present. Transient Protection The bus terminals of the TP8485E transceiver family possess on-chip ESD protection against ±18 kV HBM and ±13 kV IEC61000-4-2 contact discharge. The International Electrotechnical Commision (IEC) ESD test is far more severe than the HBM ESD test. The 50% higher charge capacitance, CS, and 78% lower discharge resistance, RD of the IEC model produce significantly higher discharge currents than the HBM model. As stated in the IEC 61000-4-2 standard, contact discharge is the preferred transient protection test method. Although IEC air-gap testing is less repeatable than contact testing, air discharge protection levels are inferred from the contact discharge test results. Figure 9. HBM and IEC-ESD Models and Currents in Comparison (HBM Values in Parenthesis) www.3peakic.com.cn Rev. A.01 9 TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver The on-chip implementation of IEC ESD protection significantly increases the robustness of equipment. Common discharge events occur because of human contact with connectors and cables. Designers may choose to implement protection against longer duration transients, typically referred to as surge transients. Figure 9 suggests two circuit designs providing protection against short and long duration surge transients, in addition to ESD and Electrical Fast Transients (EFT) transients. Table 1 lists the bill of materials for the external protection devices. EFTs are generally caused by relay-contact bounce or the interruption of inductive loads. Surge transients often result from lightning strikes (direct strike or an indirect strike which induce voltages and currents), or the switching of power systems, including load changes and short circuits switching. These transients are often encountered in industrial environments, such as factory automation and power-grid systems. Figure 10 compares the pulse-power of the EFT and surge transients with the power caused by an IEC ESD transient. In the diagram on the left of Figure 10, the tiny blue blip in the bottom left corner represents the power of a 10-kV ESD transient, which already dwarfs against the significantly higher EFT power spike, and certainly dwarfs against the 500-V surge transient. This type of transient power is well representative of factory environments in industrial and process automation. The diagram on the fright of Figure 10 compares the enormous power of a 6-kV surge transient, most likely occurring in e-metering applications of power generating and power grid systems, with the aforementioned 500-V surge transient. Figure 10. Power Comparison of ESD, EFT, and Surge Transients In the case of surge transients, high-energy content is signified by long pulse duration and slow decaying pulse Power The electrical energy of a transient that is dumped into the internal protection cells of the transceiver is converted into thermal energy. This thermal energy heats the protection cells and literally destroys them, thus destroying the transceiver. Figure 11 shows the large differences in transient energies for single ESD, EFT, and surge transients as well as for an EFT pulse train, commonly applied during compliance testing. 10 Rev. A.01 www.3peakic.com.cn TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Figure 11. Comparison of Transient Energies Table 1. Bill of Materials Device Function Order Number Manufacturer 485 5-V, 250-kbps RS-485 Transceiver TP8485E R1, R2 10-Ω, Pulse-Proof Thick-Film Resistor CRCW0603010RJNEAHP Vishay TVS Bidirectional 400-W Transient Suppressor CDSOT23-SM712 Bourns TBU1, TBU2 Bidirectional TBU-CA-065-200-WH Bourns MOV1, MOV2 200mA Transient Blocking Unit 200-V, MetalOxide Varistor MOV-10D201K Bourns 485 B A Figure 12. 485 3PEAK B A Transient Protections Against ESD, EFT, and Surge Transients The left circuit shown in Figure 12 provides surge protection of ≥ 500-V transients, while the right protection circuits can withstand surge transients of 5 kV www.3peakic.com.cn Rev. A.01 11 TP8485E Typical Performance Characteristics 100 Driver Output Current (mA) 90 80 +25 ℃ 70 RD=15Ω 60 +85 ℃ 50 RD=54Ω 40 RD=20Ω 30 20 RD=100Ω 10 D i f f eren t i al O u t p ut Vo l t age ( V) ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver 0 4.5 RDIFF=100Ω 4 3.5 RDIFF=54Ω 3 2.5 2 1.5 1 0.5 0 0.5 1 1.5 2 2.5 3 3.5 -40 -20 0 20 FIGURE 13. DRIVER OUTPUT CURRENT vs 60 80 100 120 140 FIGURE 14. DRIVER DIFFERENTIAL OUTPUT VOLTAGE DIFFERENTIAL OUTPUT VOLTAGE vs TEMPERATURE 700 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 -50 -60 600 Y OR Z = LOW Icc (μA) Output Current (mA) 40 T e m p e r a t u℃） re ( Differential Output Voltage (V) Y OR Z = HIGH D E=Vcc, R E=X 500 400 300 200 DE=GND, RE=GND 100 0 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 -50 Output Voltage(V) FIGURE 15. DRIVER OUTPUT CURRENT vs SHORT -25 0 25 50 75 100 Temperatu ℃) re ( 125 150 FIGURE 16. SUPPLY CURRENT vs TEMPERATURE CIRCUIT VOLTAGE 2.5 1 2 0.8 tPLH Skew (μs) Propagation Delay (μs) 0.9 1.5 1 0.7 0.6 0.5 0.4 0.3 tPHL 0.5 0.2 0.1 0 0 -40 -20 0 20 40 60 80 100 120 140 Temperature (℃） FIGURE 17. DRIVER DIFFERENTIAL PROPAGATION DELAY vs TEMPERATURE 12 Rev. A.01 -40 -20 0 20 40 60 80 100 120 140 Temperatu ℃) re ( FIGURE 18. DRIVER DIFFERENTIAL SKEW vs TEMPERATURE www.3peakic.com.cn TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Typical Performance Curves FIGURE 19. DRIVER AND RECEIVER WAVEFORMS www.3peakic.com.cn VCC = 5V, TA = +25°C; Unless Otherwise Specified. FIGURE 20. DRIVER WAVEFORMS Rev. A.01 13 TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Package Outline Dimensions SO-8 (SOIC-8) A2 C θ L1 A1 e E D Symbol E1 b Rev. A.01 Dimensions In In Millimeters Inches Min Max Min Max A1 0.100 0.250 0.004 0.010 A2 1.350 1.550 0.053 0.061 b 0.330 0.510 0.013 0.020 C 0.190 0.250 0.007 0.010 D 4.780 5.000 0.188 0.197 E 3.800 4.000 0.150 0.157 E1 5.800 6.300 0.228 0.248 e 14 Dimensions 1.270 TYP 0.050 TYP L1 0.400 1.270 0.016 0.050 θ 0° 8° 0° 8° www.3peakic.com.cn TP8485E ± 18K ESD Protection, Full Fail-Safe RS-485 Transceiver Package Outline Dimensions MSOP-8 Dimensions Dimensions In In Millimeters Inches Min Max Min Max A 0.800 1.200 0.031 0.047 A1 0.000 0.200 0.000 0.008 A2 0.760 0.970 0.030 0.038 b 0.30 TYP 0.012 TYP C 0.15 TYP 0.006 TYP D 2.900 e 0.65 TYP E 2.900 3.100 0.114 0.122 E1 4.700 5.100 0.185 0.201 L1 0.410 0.650 0.016 0.026 θ 0° 6° 0° 6° Symbol E E1 A A2 e b D 3.100 0.114 0.122 0.026 A1 R1 R θ L1 www.3peakic.com.cn L L2 Rev. A.01 15