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TI Releases Level Translating Transceiver Specifically Designed for CompactFlash® Interface

Oct 8, 2005

DALLAS (October 8, 2005) - Texas Instruments Incorporated (TI) (NYSE: TXN) today announced the release of the new SN74LV4320A, CompactFlash® Interface Transceiver. Specifically designed for the processor-to-CompactFlash interface, this new transceiver integrates all required component circuitry into a single chip offered in a 114-ball BGA package (16mm x 5.5mm). The device is an ideal solution to current methods of interfacing core processors to compact flash memory cards that are complex and costly. See focus.ti.com/docs/prod/folders/print/sn74lv4320a.html.

As consumer electronic equipment continues to reduce in size, and the continued convergence of applications accelerates, designers will be required to explore new methods while dealing with declining board real estate. TI's new SN74LV4320A provides such a new method of interfacing the core processor with a CompactFlash card. 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. The device 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. 

Packaging, Pricing, and Availability

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.

This new device joins other TI Interface devices in the Standard Linear and Logic Must Have (


) product offerings. TI's Must Have products are a select group of Standard Linear and Logic products that provide a focused priority for the customer.