Aimed at handsets, digital copiers, and laser printers, the MAX9225/MAX9226 (10-bit) and MAX9223/MAX9224 (22-bit) low-power low-current differential signaling (LCDS) serializers and deserializers communicate over a single twisted pair or differential line. This simplifies design, reduces cost, and improves EMI.
The MAX9225 serializes 8 bits of LVTTL/LVCMOS RGB digital video data, 2 bits of LVTTL/LVCMOS control data, and a clock into one LCDS serial clock and data stream. The MAX9226 deserializes one LCDS serial input into 10 single-ended LVTTL/LVCMOS outputs. The MAX9223 serializes 18 bits of LVTTL/LVCMOS RGB digital video data, 4 bits of LVTTL/LVCMOS control data, and a clock into a single LCDS serial clock and data stream. The MAX9224 deserializes one LCDS serial input into 22 single-ended LVTTL/LVCMOS outputs.
These SERDES chip sets reduce the number of interconnect wires in clamshell phones from 11 to 2 (MAX9225/MAX9226) or from 23 to 2 (MAX9223/MAX9224). The MAX9225/MAX9226 chip set is suited for interfacing to image sensors with 8-bit-wide data output, and for simplifying data transmission in digital copiers and laser printers. The MAX9223/MAX9224 are suited for driving 320- by 240-pixel resolution QVGA and QCIF LCD displays in cell phones, digital copiers, and laser printers.
These chip sets operate from a 2.5- or 3.3-V core supply and feature a separate supply for interfacing to 1.8- to 3.3-V logic levels. All devices are specified for operation from -40 °C to +85°C.
The MAX9225/MAX9226 are available in a 16-pin, 3- by 3-mm TQFN package, while the MAX9223/MAX9224 are available in a 28-pin, 4- by 4-mm TQFN package. Prices start at $0.76 for the MAX9225/MAX9226 and $1.09 for the MAX9223/MAX9224, both I nlots of 25,000. A data sheet is available on the web at www.maxim-ic.com/PRGraphics/PRPDF/MAX9223DS.pdf.