FSSD07 1-Bit / 4-Bit SD/SDIO and MMC Dual-Host Multiplexer Features Description On Resistance: 5Ω Typical, VDDC=2.7V ftoggle: >75MHz Low On Capacitance: 6pF Typical Low Power Consumption: 2µA Maximum Supports Secure Digital (SD), Secure Digital I/O The FSSD07 is a 2:1 multiplexer that allows dual Secure Digital (SD), Secure Digital I/O (SDIO), and Multimedia Card (MMC) host controllers to share a common peripheral. The host controllers can be equal to, greater than, or less than peripheral card supply with minimal power consumption. This configuration enables dual host CMD, CLK, and D[3:0] signals to be multiplexed to a common peripheral. Supports 1-Bit / 4-Bit Host Controllers The architecture includes the necessary bi-directional data and command transfer capability for single highvoltage cards or dual-voltage supply cards. The clock path is a uni-directional buffer. (SDIO), and Multimedia Card (MMC) Specifications (VDDH1/H2=1.65V to 3.6V) Communicating with High-Voltage (2.7-3.6V) and Dual-Voltage Cards (1.65-1.95V, 2.7-3.6V) Typical applications involve switching in portables and consumer applications: cell phones, digital cameras, home theater monitors, set-top boxes, and notebooks. VDDC=1.65 to 3.6V, VDDH1/H2=1.65 to 3.6V 24-Lead MLP and UMLP Packages Analog Symbol Applications Cell Phone, PDA, Digital Camera, Portable GPS, and Notebook Computer LCD Monitor, TV, and Set-Top Box IMPORTANT NOTE: For additional performance information, please contact [email protected]. Figure 1. Analog Symbol Diagram Ordering Information Part Number Top Mark Operating Temperature Range Eco Status FSSD07BQX FSSD07 -40°C to +85°C Green 24-Lead Molded Leadless Package (MLP), JEDEC MO-220, 3.5 x 4.5mm Tape & Reel FSSD07UMX -40°C to +85°C Green 24-Lead Ultra-thin Molded Leadless Package (UMLP), 0.4mm pitch Tape & Reel JK Packing Method Package Description For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. © 2007 Fairchild Semiconductor Corporation FSSD07 Rev. 1.0.0 www.fairchildsemi.com FSSD07 — 1-Bit / 4-Bit SD/SDIO and MMC Dual-Host Multiplexer April 2009 FSSD07 — 1-Bit / 4-Bit SD/SDIO and MMC Dual-Host Multiplexer © 2007 Fairchild Semiconductor Corporation FSSD07 Rev. 1.0.0 www.fairchildsemi.com 16