28-Lead Plastic Leaded Chip Carrier [PLCC] (P-28) Dimensions shown in inches and (millimeters) a 0.180 (4.57) 0.165 (4.19) 0.048 (1.22) 0.042 (1.07) 5 0.056 (1.42) 0.042 (1.07) 4 PIN 1 IDENTIFIER 26 25 0.050 (1.27) BSC TOP VIEW (PINS DOWN) 11 12 19 18 0.456 (11.582) SQ 0.450 (11.430) 0.495 (12.57) SQ 0.485 (12.32) 0.120 (3.04) 0.090 (2.29) 0.020 (0.51) MIN 0.021 (0.53) 0.013 (0.33) 0.032 (0.81) 0.026 (0.66) 0.430 (10.92) 0.390 (9.91) BOTTOM VIEW (PINS UP) 0.045 (1.14) R 0.025 (0.64) COMPLIANT TO JEDEC STANDARDS MO-047-AB CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. 042508-A 0.048 (1.22) 0.042 (1.07)