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ICS853S024 Fiches technique(PDF) 10 Page - Renesas Technology Corp |
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ICS853S024 Fiches technique(HTML) 10 Page - Renesas Technology Corp |
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10 / 20 page ![]() ICS853S024AY REVISION A JULY 20, 2011 10 ©2011 Integrated Device Technology, Inc. ICS853S024 Data Sheet LOW SKEW, 1-TO-24, DIFFERENTIAL-TO-3.3V, 2.5V LVPECL FANOUT BUFFER 2.5V LVPECL Clock Input Interface The PCLK /nPCLK accepts LVPECL, LVDS, CML and other differential signals. Both VSWING and VOH must meet the VPP and VCMR input requirements. Figures 3A to 3E show interface examples for the PCLK/ nPCLK input driven by the most common driver types. The input interfaces suggested here are examples only. If the driver is from another vendor, use their termination recommendation. Please consult with the vendor of the driver component to confirm the driver termination requirements. Figure 3A. PCLK/nPCLK Input Driven by a CML Driver Figure 3C. PCLK/nPCLK Input Driven by a 2.5V LVPECL Driver Figure 3E. PCLK/nPCLK Input Driven by a 2.5V LVDS Driver Figure 3B. PCLK/nPCLK Input Driven by a Built-In Pullup CML Driver Figure 3D. PCLK/nPCLK Input Driven by a 2.5V LVPECL Driver with AC Couple PCLK nPCLK LVPECL Input CML 2.5V Zo = 50 Ω Zo = 50 Ω 2.5V 2.5V R1 50 Ω R2 50 Ω R3 250 Ω R4 250 Ω R1 62.5 Ω R2 62.5 Ω 2.5V Zo = 50 Ω Zo = 50 Ω PCLK nPCLK 2.5V 2.5V LVPECL LVPECL Input 2.5V R1 100 Ω LVDS PCLK nPCLK 2.5V LVPECL Input Zo = 50 Ω Zo = 50 Ω PCLK nPCLK 2.5V LVPECL Input 2.5V Zo = 50 Ω Zo = 50 Ω R1 100 Ω CML Built-In Pullup R6 100 Ω-180Ω 3.3V LVPECL Driv er R7 100 Ω-180Ω Zo = 50 Ω R2 100 Ω C1 Zo = 50 Ω R3 100 Ω C2 R4 100 Ω R1 100 Ω 2.5V 3.3V PCLK nPCLK |
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