FEATURES
Description
The CM1624 is a combination EMI filter and line termination device with integrated TVS diodes for use on Multimedia Card interfaces. This state-of-the-art device utilizes solid-state, silicon-avalanche technology for superior clamping performance and DC electrical characteristics. The CM1624 has been optimized for protection of T-Flash/MicroSD interfaces incellular phones and other portable electronics.
The CM1624 consists of six circuits that includes series impedance matching resistors and pull-up resistors as required by the SD specification. TVS diodes are included on each line for ESD protection. An additional TVS diode connection is included for protection of the voltage (Vcc) bus. Termination resistor value of 40Ωis provided on the SDData0, SDData1, SDData2, SDData3, CMD, and CLK lines.
Features
• Bidirectional EMI/RFI filtering and line termination with integrated ESD protection
• Provides ESD protection to IEC61000-4-2:
• ±15kV contact discharge
• TVS working voltage: 5V
• Termination resistors: 40Ω
• Pull-up resistors: 25kΩ
• Typical capacitance per line: 12pF (VIN = 2.5V)
• Protection and termination for six lines + Vcc
• Solid-state technology
Applications
• T-Flash / MicroSD interfaces
• MMC interfaces
• CDMA, GSM, 3G cell phones
ON Semiconductor (Nasdaq: ON) is driving energy efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.