● Transceiver for Memory Card Interface [MultiMediaCard
●(MMC) and Secure Digital (SD) Compliant Products]
● Configurable I/O Switching Levels With Dual-Supply Pins
●Operating Over Full 1.2-V to 3.6-V Power-Supply Range
● Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
● ESD Protection
● ±8-kV Contact Discharge
● ±15-kV Air-Gap Discharge
● EMI Filtering
● Integrated Pullup and Pulldown Resistors on Card-Side I/Os per
●SD Specification
● ZQS Package Has 100-k Pullup Resistors Via WP and CD Pins
●MicroStar Junior Is a trademark of Texas Instruments.
●## DESCRIPTION/ORDERING INFORMATION
●The SN74AVCA406E is a transceiver for interfacing microprocessors with MultiMediaCards (MMCs) and secure digital (SD) cards.
●Two supply-voltage pins allow the A-port and B-port input switching thresholds to be configured separately. The A port is designed to track VCCA, while the B port is designed to track VCCB. VCCA and VCCB can accept any supply voltage from 1.2 V to 3.6 V.
●If either VCC is switched off (VCCA = 0 V and/or VCCB = 0 V), all outputs are placed in the high-impedance state to conserve power.
●The SN74AVCA406E enables system designers to easily interface low-voltage microprocessors to different memory cards operating at higher voltages.
●Memory card standards recommend high ESD protection for devices that connect directly to the external memory card. To meet this need, the SN74AVCA406E incorporates ±15-kV Air-Gap Discharge and ±8-kV Contact Discharge protection on the card side.
●The SN74AVCA406E is available in two 0.5-mm-pitch ball grid array (BGA) packages. The 20-ball package has dimensions of 3 mm × 2.5 mm, and the 24-ball package measures 3 mm ×
●3 mm. Memory cards are widely used in mobile phones, PDAs, digital cameras, personal media players, camcorders, set-top boxes, etc. Low static power consumption and small package size make the SN74AVCA406E an ideal choice for these applications.
