CM1624

EMI Filter for T-Flash / MicroSD Interfaces CM1624 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 in cellular 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 40 W is provided on the SDData0, SDData1, SDData2, SDData3, CMD, and CLK lines. Pull−up resistors of 25 kW are included on the SDData0, SDData1, SDData2, SDData3 and CMD lines, as well. These may be configured for devices operating in SD or SPI mode. The TVS diodes provide effective suppression of ESD voltages in excess of ±15 kV (contact discharge) per IEC 61000−4−2, level 4. The CM1624 is in a 16−pin, RoHS/WEEE compliant, UDFN 16−pin package. It measures 3.30 x 1.35 x 0.50 mm. The leads are spaced at a pitch of 0.4 mm and are finished with lead−free NiPd. Features Bidirectional EMI/RFI Filtering and Line Termination with Integrated ESD Protection Provides ESD Protection to IEC61000−4−2: ±15 k...