Here are three stocks with buy ranks and strong growth characteristics for investors to consider today, July 23rd:Silicon Motion Technology Corporation (SIMO) : This manufacturer of NAND flash controllers for solid-state storage devices carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 1.1% over the last 60 days.Silicon Motion Technology has a PEG ratio of 0.55 compared with 5.76 for the industry. The company possesses a Growth Score  of B.Despe ...