● Transceiver for Memory Card Interface [MultiMediaCard (MMC), Secure Digital (SD), Memory Stick Compliant Products, SmartMedia Card, and xD-Picture Card]
● Configurable I/O Switching Levels With Dual-Supply Pins Operating Over Full 1.4-V to 3.6-V Power-Supply Range
● For Low-Power Operation, A Ports Are Placed in High-Impedance State When Card-Side Supply Voltage Is Switched Off
● Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
● ESD Protection for Card-Side Pins (B Port)
● ±15 kV (±12 kV on Pin 14B) - IEC 61000-4-2 ESD, Air-Gap Discharge
● ±8 kV - IEC 61000-4-2 ESD, Contact Discharge
● ESD Protection for A-Port Pins (Tested Per JESD 22) Exceeds
● 2000-V Human-Body Model (A114-B
● 1000-V Charged-Device Model (C101)
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●## DESCRIPTION/ORDERING INFORMATION
●The SN74AVCA406 is a transceiver for interfacing microprocessors with MultiMediaCards (MMCs), secure digital (SD) cards, Memory Stick compliant products, SmartMedia cards, or xD-Picture Cards. It integrates high ESD protection, which eliminates the need for external ESD diodes. 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 VCCB0 and VCCB1. VCCA ,VCCB0 and VCCB1 can accept any supply voltage from 1.4 V to 3.6 V.
●Memory card standards recommend high ESD protection for devices that connect directly to the external memory card. To meet this need, the SN74AVCA406 incorporates ±15-kV air-gap discharge and ±8-kV contact discharge protection on the card side. If VCCB0 and VCCB1 are switched off (no card inserted), the A-port outputs are placed in the high-impedance state to conserve power.
●The SN74AVCA406 enables system designers to easily interface low-voltage microprocessors to different memory cards operating at higher voltages. The mode (MODE0 and MODE1) pins are used to configure the device to interface with different types of cards.
●The SN74AVCA406 is offered in the 48-ball MicroStar Jr. ball grid array (BGA) package. This package has dimensions of 4 × 4 mm, with a 0.5-mm ball pitch for effective board-space savings. 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 SN74AVCA406 an ideal choice for these applications.
