SD/SDIO and MMC 2-Port Multiplexer

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Overview

The FSSD06 is a two-port multiplexer that allows Secure Digital (SD), Secure Digital I/O (SDIO), and Multimedia Card (MMC) host controllers to be expanded out to multiple cards or peripherals. This configuration enables the CMD, CLK, and D[3:0] signals to be multiplexed to dual-card peripherals. It is optimized for 1-bit / 4-bit SD / MMC applications.
The architecture includes the necessary bi-directional data and command transfer capability for single high-voltage cards or dual-voltage supply cards. The clock path for the FSSD06 is a uni-directional buffer with an integrated pull-up for high-impedance mode.
Typical applications involve switching in portables and consumer applications: cell phones, digital cameras, home theater monitors, portable GPS units, and printers.

  • Media Tablets
  • Storage & Peripherals
  • Mobile Handsets
  • Wireless LAN Card & Broadband Access
  • PMP/MP3 Players
  • • On Resistance Typically 4Ω, VDDH=2.7V • ftoggle: > 120MHz • Low On Capacitance: 9pF Typical • Low Power Consumption: 1µA Maximum • Conforms to Secure Digital (SD), Secure Digital I/O (SDIO), and Multimedia Card (MMC) Specifications • Supports 1-Bit / 4-Bit Host Controllers (VDDH=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)
  • VDDH=1.65 to 3.6V, VDDC1/C2=VDDH to 3.6V • 24-Lead MLP (3.5 x 4.5mm) and UMLP Packages

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FSSD06BQX

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Pb

A

H

P

WQFN-24

1

260

REEL

3000

N

1

2

SPST

1

6

1.65

3.6

$0.575

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