Datasheet SKY53510 (Skyworks) - 7

DATA SHEET SKY53510/SKY53580/SKY53540 Table 2. SKY53580 6x6 mm 40-QFN Pin Descriptions (Continued) Pin Name Type1 Description
16 CLK0 I Input Clock 0. 17 CLK0b I Input Clock 0 (complement). Mux input select pin. 18 CLK_SEL1 I CLK_SEL1 contains an internal pull-down resistor. Output signal format control pin for Bank B. 19 SFOUTB0 I SFOUTB0 contains an internal pull-down resistor. 20 GND GND Ground. 21 Q7b O Output Clock 7 (complement). 22 Q7 O Output Clock 7. 23 Q6b O Output Clock 6 (complement). 24 Q6 O Output Clock 6. 25 VDDOB P Output voltage supply-Bank B (Outputs: Q4 to Q7). Bypass with 0.1 µF capacitor and place as close to the VDDOB pin as possible. 26 Q5b O Output Clock 5 (complement). 27 Q5 O Output Clock 5. Output voltage supply-Bank B (Outputs: Q4 to Q7). 28 VDDOB P Bypass with 0.1 µF capacitor and place as close to the VDDOB pin as possible. 29 Q4b O Output Clock 4 (complement). 30 Q4 O Output Clock 4. 31 GND GND Ground. Output signal format control pin for Bank B. 32 SFOUTB1 I SFOUTB1 contains an internal pull-down resistor. 33 CLK1b I Input Clock 1 (complement). 34 CLK1 I Input Clock 1. 35 VDD P Core voltage supply. Bypass with 0.1 µF capacitor placed as close to the VDD pin as possible. 36 REFOUT O LVCMOS reference output clock. Enable this output by pulling pin 38 high. REFOUT buffer supply. 37 VDDOC P Bypass with 0.1 µF capacitor placed as close to the VDDOC pin as possible. Output Enable for REFOUT. 38 OE_REF I OE_REF contains an internal pull-down resistor. Output signal format control pin for Bank A. 39 SFOUTA1 I SFOUTA1 contains an internal pull-down resistor. 40 GND GND Ground. GND Pad GND GND Power supply ground and thermal relief. 1. Pin types are: I = input, O = output, P = power, GND = ground. Skyworks Solutions, Inc. • Phone [949] 231-3000 • sales@skyworksinc.com • www.skyworksinc.com 207106A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice 7 August 1, 2025 Document Outline Key Features 1. Pin Descriptions 1.1. SKY53510 7x7 mm 48-QFN Pin Descriptions 1.2. SKY53580 6x6 mm 40-QFN Pin Descriptions 1.3. SKY53540 5x5 mm 32-QFN Pin Descriptions 2. Detailed Description 2.1. Overview 2.2. Block Diagrams 2.3. Modes of Operation 2.3.1. Input Clock Stage 2.3.2. Clock Outputs 3. Applications Information 3.1. Driving Clock Inputs (CLK0/CLK1) 3.2. Crystal Interface (XA/XB) 3.3. Clock Output Termination 3.3.1. DC-Coupled Differential Output Driver Terminations 3.3.2. AC-Coupled Differential Output Driver Terminations 4. Power Supply (VDD and VDDOx) 4.1. Power Supply Sequencing 5. Electrical Specifications 6. Typical Performance Characteristics 7. Package and Handling Information 7.1. 48-QFN Package Diagram 7.2. 40-QFN Package Diagram 7.3. 32-QFN Package Diagram 8. Land Patterns 8.1. 48-QFN Land Pattern 8.2. 40-QFN Land Pattern 8.3. 32-QFN Land Pattern 9. Top Markings 9.1. SKY53510/80/40 Top Markings 10. Ordering Guide 11. Revision History