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ICS874003AG-04LF

ICS874003AG-04LF

  • 厂商:

    RENESAS(瑞萨)

  • 封装:

    TSSOP-20

  • 描述:

    IC PCI EXPRSS/JITT ATTEN 20TSSOP

  • 数据手册
  • 价格&库存
ICS874003AG-04LF 数据手册
PCI EXPRESS™ Jitter Attenuator ICS874003-04 DATA SHEET PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES JANUARY 27, 2015 General Description Features The ICS874003-04 is a high performance Differential-to-LVDS Jitter Attenuator designed for use in PCI Express systems. In some PCI Express systems, such as those found in desktop PCs, the PCI ExpressTM clocks are generated from a low bandwidth, high phase noise PLL frequency synthesizer. In these systems, a jitter attenuator may be required to attenuate high frequency random and deterministic jitter components from the PLL synthesizer and from the system board. The ICS874003-04 has a bandwidth of 6.8MHz. The 6.8MHz provides a high bandwidth that can easily track triangular spread profiles, while providing jitter attenuation. • • • Three differential LVDS output pairs • • • • • • • • Input frequency range: 98MHz to 128MHz • Use replacement part: 874003BG-05LF The ICS874003-04 uses IDT’s 3rd Generation FemtoClock™ PLL technology to achieve the lowest possible phase noise. The device is packaged in a 20 Lead TSSOP package, making it ideal for use in space constrained applications such as PCI Express add-in cards. One differential clock input CLK/nCLK can accept the following differential input levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL Output frequency range: 98MHz to 320MHz VCO range: 490MHz - 640MHz Supports PCI-Express Spread-Spectrum Clocking High PLL bandwidth allows for better input tracking Full 3.3V supply mode 0°C to 70°C ambient operating temperature Available in both standard (RoHS 5) and lead-free (RoHS 6) packages Pin Assignment F_SEL[2:0] Function Table Inputs Outputs QA1 VDDO QA0 nQA0 MR F_SEL0 nc 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 nQA1 VDDO QB0 nQB0 F_SEL2 OEB GND nCLK F_SEL2 F_SEL1 F_SEL0 QA[0:1], nQA[0:1] QB, nQB0 0 0 0 ÷2 ÷2 1 0 0 ÷5 ÷2 0 1 0 ÷4 ÷2 1 1 0 ÷2 ÷4 ICS874003-04 0 0 1 ÷2 ÷5 1 0 1 ÷5 ÷4 0 1 1 ÷4 ÷5 20-Lead TSSOP 6.5mm x 4.4mm x 0.925mm package body G Package Top View 1 1 1 ÷4 ÷4 ICS874003AG-04 REVISION B JANUARY 28, 2014 1 VDDA F_SEL1 VDD CLK OEA ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Block Diagram OEA Pullup F_SEL2:0 Pulldown 3 QA0 ÷5 ÷4 ÷2 (default) nQA0 QA1 CLK Pulldown nCLK Pullup Phase Detector VCO nQA1 490 - 640MHz 3 ÷5 ÷4 ÷2 (default) M = ÷5 (fixed) QB0 nQB0 MR Pulldown OEB Pullup ICS874003AG-04 REVISION B JANUARY 28, 2014 2 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Table 1. Pin Descriptions Number Name 1, 20 QA1, nQA1 Output Type Description Differential output pair. LVDS interface levels. 2, 19 VDDO Power Output supply pins. 3, 4 QA0, nQA0 Output Differential output pair. LVDS interface levels. 5 MR Input Pulldown Active HIGH Master Reset. When logic HIGH, the internal dividers are reset causing the true outputs (Qx) to go low and the inverted outputs (nQx) to go high. When logic LOW, the internal dividers and the outputs are enabled. LVCMOS/LVTTL interface levels. 6, 9, 16 F_SEL0, F_SEL1, F_SEL2 Input Pulldown Frequency select pin for QAx, nQAx and QB0, nQB0 outputs. LVCMOS/LVTTL interface levels. 7 nc Unused No connect. 8 VDDA Power Analog supply pin. 10 VDD Power Core supply pin. 11 OEA Input Pullup 12 CLK Input Pulldown 13 nCLK Input Pullup 14 GND Power 15 OEB Input 17, 18 nQB0, QB0 Output Output enable pin for QA pins. When HIGH, the QAx, nQAx outputs are active. When LOW, the QAx, nQAx outputs are in a high impedance state. LVCMOS/LVTTL interface levels. Non-inverting differential clock input. Inverting differential clock input. Power supply ground. Pullup Output enable pin for QB0 pins. When HIGH, the QB0, nQB0 outputs are active. When LOW, the QB0, nQB0 outputs are in a high impedance state. LVCMOS/LVTTL interface levels. Differential output pair. LVDS interface levels. NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values. Table 2. Pin Characteristics Symbol Parameter Test Conditions Minimum Typical Maximum Units CIN Input Capacitance 4 pF RPULLUP Input Pullup Resistor 51 k RPULLDOWN Input Pulldown Resistor 51 k Table 3. Output Enable Function Table Inputs Outputs OEx Qx[0:1], nQx[0:1] 0 Hi-Impedance 1 Enabled ICS874003AG-04 REVISION B JANUARY 28, 2014 3 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Absolute Maximum Ratings NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only. Functional operation of product at these conditions or any conditions beyond those listed in the DC Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. Item Rating Supply Voltage, VDD 4.6V Inputs, VI -0.5V to VDD + 0.5V Outputs, IO Continuos Current Surge Current 10mA 15mA Package Thermal Impedance, JA 86.7°C/W (0 mps) Storage Temperature, TSTG -65C to 150C DC Electrical Characteristics Table 4A. LVDS Power Supply DC Characteristics,VDD = VDDO = 3.3V ± 5%, TA = 0°C to 70°C Symbol Parameter VDD Test Conditions Minimum Typical Maximum Units Positive Supply Voltage 3.135 3.3 3.465 V VDDA Analog Supply Voltage VDD – 0.16 3.3 VDD V VDDO Output Supply Voltage 3.135 3.3 3.465 V IDD Power Supply Current 74 mA IDDA Analog Supply Current 16 mA IDDO Output Supply Current 76 mA Table 4B. LVCMOS/LVTTL DC Characteristics, VDD = VDDO = 3.3V ± 5%, TA = 0°C to 70°C Symbol Parameter VIH Input High Voltage VIL Input Low Voltage IIH Input High Current IIL Input Low Current Test Conditions Minimum Typical Maximum Units 2 VDD + 0.3 V -0.3 0.8 V OEA, OEB VDD = VIN = 3.465V 5 µA F_SEL0, F_SEL1, F_SEL2, MR VDD = VIN = 3.465V 150 µA OEA, OEB VDD = 3.465V, VIN = 0V -150 µA F_SEL0, F_SEL1, F_SEL2, MR VDD = 3.465V, VIN = 0V -5 µA ICS874003AG-04 REVISION B JANUARY 28, 2014 4 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Table 4C. Differential DC Characteristics, VDD = VDDO = 3.3V ± 5%, TA = 0°C to 70°C Symbol Parameter IIH Input High Current IIL Test Conditions Minimum Typical Maximum Units CLK VDD = VIN = 3.465V 150 µA nCLK VDD = VIN = 3.465V 5 µA CLK VDD = 3.465V, VIN = 0V -5 µA nCLK VDD = 3.465V, VIN = 0V -150 µA Input Low Current VPP Peak-to-Peak Voltage; NOTE 1 VCMR Common Mode Input Voltage; NOTE 1, 2 0.15 1.3 V GND + 0.5 VDD – 0.85 V NOTE 1: VIL should not be less than -0.3V. NOTE 2: Common mode input voltage is defined as VIH. Table 4D. LVDS DC Characteristics, VDD = VDDO = 3.3V ± 5%, TA = 0°C to 70°C Symbol Parameter VOD Differential Output Voltage VOD VOD Magnitude Change VOS Offset Voltage VOS VOS Magnitude Change Test Conditions Minimum Typical Maximum Units 275 375 485 mV 50 mV 1.50 V 50 mV 1.20 1.35 Table 5. AC Characteristics, VDD = VDDO = 3.3V ± 5%, TA = 0°C to 70°C Symbol Parameter fMAX Output Frequency tjit(cc) tsk(o) Maximum Units 320 MHz Cycle-to-Cycle Jitter; NOTE 1 35 ps Output Skew; NOTE 1, 2 135 ps tsk(b) Bank Skew; NOTE 1, 3 tR / tF Output Rise/Fall Time odc Output Duty Cycle Test Conditions Minimum 98 Bank A 20% to 80% Typical 50 ps 215 550 ps 47 53 % NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium has been reached under these conditions. NOTE 1: This parameter is defined in accordance with JEDEC Standard 65. NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at the differential cross points. NOTE 3: Defined as skew within a bank of outputs at the same voltage and with equal load conditions. ICS874003AG-04 REVISION B JANUARY 28, 2014 5 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Parameter Measurement Information VDD nCLK 3.3V ±5% VDD, V V Cross Points PP VDDO CMR CLK VDDA GND Differential Input Level 3.3V LVDS Output Load AC Test Circuit nQA0 nQAx, nQB0 QA0 QAx, QB0 tcycle n nQA1 tcycle n+1 tjit(cc) = |tcycle n – tcycle n+1| 1000 Cycles QA1 tsk(b) Cycle-to-Cycle Jitter Bank Skew nQx nQAx, nQB0 Qx QAx, QB0 nQy Qy Output Duty Cycle/Pulse Width/Period Output Skew ICS874003AG-04 REVISION B JANUARY 28, 2014 6 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Parameter Measurement Information, continued nQAx, nQB0 80% 80% VOD QAx, QB0 20% 20% tR tF Output Rise/Fall Time Offset Voltage Setup Differential Output Voltage Setup ICS874003AG-04 REVISION B JANUARY 28, 2014 7 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Application Information Power Supply Filtering Technique As in any high speed analog circuitry, the power supply pins are vulnerable to random noise. To achieve optimum jitter perform- ance, power supply isolation is required. The ICS874003-04 provides separate power supplies to isolate any high switching noise from the outputs to the internal PLL. VDD, VDDA and VDDO should be individually connected to the power supply plane through vias, and 0.01µF bypass capacitors should be used for each pin. Figure 1 illustrates this for a generic VDD pin and also shows that VDDA requires that an additional 10 resistor along with a 10F bypass capacitor be connected to the VDDA pin. 3.3V VDD .01µF 10Ω .01µF 10µF VDDA Figure 1. Power Supply Filtering Wiring the Differential Input to Accept Single-Ended Levels Figure 2 shows how the differential input can be wired to accept single-ended levels. The reference voltage V_REF = VDD/2 is generated by the bias resistors R1, R2 and C1. This bias circuit should be located as close as possible to the input pin. The ratio of R1 and R2 might need to be adjusted to position the V_REF in the center of the input voltage swing. For example, if the input clock swing is only 2.5V and VDD = 3.3V, V_REF should be 1.25V and R2/R1 = 0.609. VDD R1 1K Single Ended Clock Input CLK V_REF nCLK C1 0.1u R2 1K Figure 2. Single-Ended Signal Driving Differential Input ICS874003AG-04 REVISION B JANUARY 28, 2014 8 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Differential Clock Input Interface component to confirm the driver termination requirements. For example, in Figure 3A, the input termination applies for IDT HiPerClockS open emitter LVHSTL drivers. If you are using an LVHSTL driver from another vendor, use their termination recommendation. The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL and other differential signals. The differential signal must meet the VPP and VCMR input requirements. Figures 3A to 3F show interface examples for the HiPerClockS CLK/nCLK input driven by the most common driver types. The input interfaces suggested here are examples only. Please consult with the vendor of the driver 3.3V 3.3V 3.3V 1.8V Zo = 50Ω Zo = 50Ω CLK CLK Zo = 50Ω nCLK Zo = 50Ω nCLK Differential Input LVHSTL IDT LVHSTL Driver R1 50Ω Differential Input LVPECL R2 50Ω R1 50Ω R2 50Ω R2 50Ω Figure 3B. HiPerClockS CLK/nCLK Input Driven by a 3.3V LVPECL Driver 3A. HiPerClockS CLK/nCLK Input Driven by an IDT Open Emitter HiPerClockS LVHSTL Driver 3.3V 3.3V 3.3V 3.3V 3.3V Zo = 50Ω CLK CLK R1 100Ω nCLK nCLK Zo = 50Ω Differential Input LVPECL Receiver LVDS Figure 3D. HiPerClockS CLK/nCLK Input Driven by a 3.3V LVDS Driver Figure 3C. HiPerClockS CLK/nCLK Input Driven by a 3.3V LVPECL Driver 2.5V 3.3V 3.3V 3.3V 2.5V R3 120Ω R4 120Ω Zo = 60Ω *R3 CLK CLK Zo = 60Ω nCLK nCLK HCSL *R4 SSTL Differential Input R1 120Ω Differential Input Figure 3F. HiPerClockS CLK/nCLK Input Driven by a 2.5V SSTL Driver Figure 3E. HiPerClockS CLK/nCLK Input Driven by a 3.3V HCSL Driver ICS874003AG-04 REVISION B JANUARY 28, 2014 R2 120Ω 9 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Recommendations for Unused Input and Output Pins Inputs: Outputs: LVCMOS Control Pins LVDS Outputs All control pins have internal pull-ups or pull-downs; additional resistance is not required but can be added for additional protection. A 1k resistor can be used. All unused LVDS output pairs can be either left floating or terminated with 100 across. If they are left floating, there should be no trace attached. 3.3V LVDS Driver Termination A general LVDS interface is shown in Figure 4. In a 100 differential transmission line environment, LVDS drivers require a matched load termination of 100 across near the receiver input. For a multiple LVDS outputs buffer, if only partial outputs are used, it is recommended to terminate the unused outputs. 3.3V 50Ω 3.3V LVDS Driver + R1 100Ω – 50Ω 100Ω Differential Transmission Line Figure 4. Typical LVDS Driver Termination ICS874003AG-04 REVISION B JANUARY 28, 2014 10 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Schematic Example Figure 5 shows an example of ICS874003-04 application schematic. In this example, the device is operated at VDD = 3.3V. The decoupling capacitors should be located as close as possible to the power pin. Two examples of LVDS terminations are shown in this schematic. The input is driven either by a 3.3V LVPECL driver or a 3.3V LVCMOS. ICS874003-04 Figure 5. ICS874003-04 Schematic Example ICS874003AG-04 REVISION B JANUARY 28, 2014 11 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Power Considerations This section provides information on power dissipation and junction temperature for the ICS874003-04. Equations and example calculations are also provided. 1. Power Dissipation. The total power dissipation for the ICS74003-04 is the sum of the core power plus the analog power plus the power dissipated in the load(s). The following is the power dissipation for VDD = 3.3V + 5% = 3.465V, which gives worst case results. • Power (core)MAX = VDD_MAX * (IDD_MAX + IDDA_MAX) = 3.465V * (74mA + 16mA) = 311.85mW • Power (outputs)MAX = VDDO_MAX * IDDO_MAX = 3.465V * 76mA = 263.34mW Total Power_MAX = 311.85mW + 263.34mW = 575.19mW • 2. Junction Temperature. Junction temperature, Tj, is the temperature at the junction of the bond wire and bond pad directly affects the reliability of the device. The maximum recommended junction temperature for HiPerClockS devices is 125°C. Limiting the internal transistor junction temperature, Tj, to 125°C ensures that the bond wire and bond pad temperature remains below 125°C. The equation for Tj is as follows: Tj = JA * Pd_total + TA Tj = Junction Temperature JA = Junction-to-Ambient Thermal Resistance Pd_total = Total Device Power Dissipation (example calculation is in section 1 above) TA = Ambient Temperature In order to calculate junction temperature, the appropriate junction-to-ambient thermal resistance JA must be used. Assuming no air flow and a multi-layer board, the appropriate value is 86.7°C/W per Table 6 below. Therefore, Tj for an ambient temperature of 70°C with all outputs switching is: 70°C + 0.575W * 86.7°C/W = 119.9°C. This is well below the limit of 125°C. This calculation is only an example. Tj will obviously vary depending on the number of loaded outputs, supply voltage, air flow and the type of board (multi-layer). Table 6. Thermal Resistance JA for 20 Lead TSSOP, Forced Convection JA by Velocity Meters per Second Multi-Layer PCB, JEDEC Standard Test Boards ICS874003AG-04 REVISION B JANUARY 28, 2014 0 1 2.5 86.7°C/W 82.4°C/W 80.2°C/W 12 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Reliability Information Table 7. JA vs. Air Flow Table for a 20 Lead TSSOP JA by Velocity Meters per Second Multi-Layer PCB, JEDEC Standard Test Boards 0 1 2.5 86.7°C/W 82.4°C/W 80.2°C/W Transistor Count The transistor count for ICS874003-04 is: 1,416 Package Outline and Package Dimensions Package Outline - G Suffix for 20 Lead TSSOP Table 8 Package Dimensions All Dimensions in Millimeters Symbol Minimum Maximum N 20 A 1.20 A1 0.05 0.15 A2 0.80 1.05 b 0.19 0.30 c 0.09 0.20 D 6.40 6.60 E 6.40 Basic E1 4.30 4.50 e 0.65 Basic L 0.45 0.75  0° 8° aaa 0.10 Reference Document: JEDEC Publication 95, MO-153 ICS874003AG-04 REVISION B JANUARY 28, 2014 13 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Revision History Sheet Rev B Table Page Description of Change Date Product Discontinuation Notice - Last Time Buy Expires January 27, 2015, PDN# CQ-14-02 ICS874003AG-04 REVISION B JANUARY 28, 2014 14 1/28/14 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet PCI EXPRESS™ JITTER ATTENUATOR Ordering Information Table 9. Ordering Information Part/Order Number 874003AG-04 874003AG-04T 874003AG-04LF 874003AG-04LFT Marking ICS874003A04 ICS874003A04 ICS74003A04L ICS74003A04L Package 20 Lead TSSOP 20 Lead TSSOP “Lead-Free” 20 Lead TSSOP “Lead-Free” 20 Lead TSSOP Shipping Packaging Tube 2500 Tape & Reel Tube 2500 Tape & Reel Temperature 0C to 70C 0C to 70C 0C to 70C 0C to 70C NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. ICS874003AG-04 REVISION B JANUARY 28, 2014 15 ©2014 Integrated Device Technology, Inc. ICS874003-04 Data Sheet 6024 Silver Creek Valley Road San Jose, California 95138 PCI EXPRESS™ JITTER ATTENUATOR Sales 800-345-7015 (inside USA) +408-284-8200 (outside USA) Fax: 408-284-2775 www.IDT.com/go/contactIDT Technical Support netcom@idt.com +480-763-2056 DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document, including descriptions of product features and performance, is subject to change without notice. Performance specifications and the operating parameters of the described products are determined in the independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT’s products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT or any third parties. IDT’s products are not intended for use in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT. Integrated Device Technology, IDT and the IDT logo are registered trademarks of IDT. Other trademarks and service marks used herein, including protected names, logos and designs, are the property of IDT or their respective third party owners. Copyright 2014. All rights reserved. IMPORTANT NOTICE AND DISCLAIMER RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for developers skilled in the art designing with Renesas products. You are solely responsible for (1) selecting the appropriate products for your application, (2) designing, validating, and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. Renesas grants you permission to use these resources only for development of an application that uses Renesas products. Other reproduction or use of these resources is strictly prohibited. No license is granted to any other Renesas intellectual property or to any third party intellectual property. Renesas disclaims responsibility for, and you will fully indemnify Renesas and its representatives against, any claims, damages, costs, losses, or liabilities arising out of your use of these resources. Renesas' products are provided only subject to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources expands or otherwise alters any applicable warranties or warranty disclaimers for these products. (Rev.1.0 Mar 2020) Corporate Headquarters Contact Information TOYOSU FORESIA, 3-2-24 Toyosu, Koto-ku, Tokyo 135-0061, Japan www.renesas.com For further information on a product, technology, the most up-to-date version of a document, or your nearest sales office, please visit: www.renesas.com/contact/ Trademarks Renesas and the Renesas logo are trademarks of Renesas Electronics Corporation. All trademarks and registered trademarks are the property of their respective owners. © 2020 Renesas Electronics Corporation. All rights reserved.
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