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Fairchild translators provide low-noise buffered interface

Posted: 05 Jul 2004 ?? ?Print Version ?Bookmark and Share

Keywords:fairchild semiconductor? fxl4245? logic-level translator? fxlh42245?

Fairchild Semiconductor launched a series of 8-bit, bidirectional, low-voltage logic-level translators in MLP packaging.

Designed for cellphones, notebooks and other battery-powered portable devices, the CMOS-based translators provide a low-noise buffered interface with up to 24mA drive current between any 1.1V to 3.6V logic state. Both models in the series accommodate bidirectional voltage translation over a variety of logic voltage (Vcc) levels, including 1.2-, 1.5-, 1.8-, 2.5- and 3.3V.

The FXL4245 and the FXLH42245 provide configurable voltage supplies (VCCA and VCCB) for the input and output that allow translation from low to high (A to B) or high to low (B to A). In addition to the standard 3-state outputs for logic-level translation, the FXLH42245 adds two additional capabilities. These include series resistance on the B-side I/O ports for noise suppression and bus hold inputs to maintain the last logic state.

According to Ken Murphy, marketing manager for logic products, "the FXL4245 device gives designers the flexibility to match I/Os of existing microprocessors to those of higher voltage functions, such as flash, panel display and peripherals."

He added that another design benefit is the device's molded leadless package (MLP) packaging "which supports the miniaturization trend in portables." Both translators are offered in a 24-terminal MLP that provides a 68 percent size reduction over 24-lead TSSOP packages.

The FXL4245 is already available with the FXLH42245 scheduled for release this month. Both models are priced at 39 cents each in OEM quantity.

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