52-Lead Ceramic Flat Package [FLATPACK] (F-52) Dimensions shown in inches and (millimeters) a 1.110 (28.194) 1.090 (27.686) 0.140 (3.56) 0.040 (1.016) TYP 0.015 (0.381) TYP 0.031 (0.787) 0.019 (0.483) 0.131 (3.327) 0.099 (2.155) 0.100 (2.54) PIN 1 IDENTIFIER 1 52 40 39 1.460 (37.084) SQ 1.440 (36.576) 0.505 (12.827) 0.495 (12.573) 0.405 (10.287) 0.395 (10.033) 0.585 (14.859) 0.575 (14.605) 27 26 0.610 (15.494) 0.590 (14.986) 0.100 (2.54) (2 PLACES) 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. 0.120 (3.048) 0.090 (2.286) 0.077 (1.956) 0.063 (1.600) 080406-A 13 14