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This literature is subject to all applicable copyright laws and is not for resale in any manner.FSSD06 SD/SDIO and MMC Two-Port Multiplexer March 2012 FSSD06 SD/SDIO and MMC Two-Port Multiplexer Features Description The FSSD06 is a two-port multiplexer that allows Secure On Resistance Typically 4, V =2.7V DDH Digital (SD), Secure Digital I/O (SDIO), and Multimedia f : > 120MHz toggle Card (MMC) host controllers to be expanded out to multiple cards or peripherals. This configuration enables Low On Capacitance: 9pF Typical the CMD, CLK, and D 3:0 signals to be multiplexed to Low Power Consumption: 1A Maximum dual-card peripherals. It is optimized for 1-bit / 4-bit SD / MMC applications. Conforms to Secure Digital (SD), Secure Digital I/O (SDIO), and Multimedia Card (MMC) Specifications The architecture includes the necessary bi-directional data and command transfer capability for single high- Supports 1-Bit / 4-Bit Host Controllers (V =1.65V to DDH voltage cards or dual-voltage supply cards. The clock 3.6V) Communicating with High-Voltage (2.7-3.6V) path for the FSSD06 is a uni-directional buffer with an and Dual-Voltage Cards (1.65-1.95V, 2.7-3.6V) integrated pull-up for high-impedance mode. - V =1.65 to 3.6V, V =V to 3.6V DDH DDC1/C2 DDH Typical applications involve switching in portables and 24-Lead MLP (3.5 x 4.5mm) and UMLP Packages consumer applications: cell phones, digital cameras, home theater monitors, portable GPS units, and printers. Applications Cell Phone, PDA, Digital Camera, Portable GPS LCD Monitor, Home Theater PC/TV, All-in-One Printer Analog Symbol Diagram VDDC1 /OE Control VDDC2 S VDDH 5 1DAT 0:3 , 1CMD 5 DAT 0:3 , CMD 5 2DAT 0:3 , 2CMD V DDC1 V DD C2 R R PU PU CLK 1CLK 2CLK GND Figure 1. Analog Symbol Diagram Ordering Information Operating Packing Part Number Package Description Temperature Range Method 24-Lead Molded Leadless Package (MLP), JEDEC MO- FSSD06BQX -40C to +85C Tape & Reel 220, 3.5 x 4.5mm FSSD06UMX -40C to +85C 24-Lead Ultrathin Molded Leadless Package (UMLP) Tape & Reel 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FSSD06 Rev. 1.0.5