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TI rolls out processor-to-CompactFlash interface transceiver

Posted: 13 Oct 2005 ?? ?Print Version ?Bookmark and Share

Keywords:sn74lv4320a? compactflash interface transceiver? texas instruments? ti? transceiver?

The SN74LV4320A transceiver from Texas Instruments Inc. (TI) is specifically designed for the processor-to-CompactFlash interface. According to the company, this new product integrates all required component circuitry into a single chip offered in a 114-ball BGA package (16-by-5.5mm).

Addressing the demand for convergence in consumer electronic equipment while dealing with declining board real estate, the transceiver provides a new method of interfacing the core processor with a CompactFlash card. TI said that current interface methods are cumbersome in both size and cost. Typically consisting of two 16-bit transceivers in addition to card detect logic and several pull-up resistors, this solution may have a high risk of floating inputs on the card-side which could cause undesirable power consumption issues. The highly integrated SN74LV4320A eliminates such issues by providing a low power, space saving solution.

The SN74LV4320 has level translation circuitry that supports both 3.3V and 5V memory cards. It also supports low power operation by incorporating Ioff and a /MASTER_EN (shutdown) Pin. Robust ESD Protection (8kV) on card-side pins is crucial in preventing damage as CompactFlash cards are inserted and removed from their sockets. Pin assignments of the LV4320A are optimized to enable a flow-through pinout from the processor to the Compact Flash card.

The SN74LV4320AGKFR/ZKFR is currently available in the 114-pin Ball Grid Array (BGA) package. The TI orderable part number SN74LV4320AZKFR is the RoHS compliant version of the device. Budgetary pricing for the SN74LV4320AGKFR is set at $3.85 in quantities of 1,000.

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