This part is a kind of semiconductor called 74LS373.

Function of this product has Octal D-type Transparent Latches(with three-state outputs).

Manufacturers : Hitachi Semiconductor

Image and pinout :

Some of the text within the PDF file :

Unit: mm 24.50 25.40 Max 20 11 7.00 Max 6.30 1 0.89 1.27 Max 10 1.30 2.54 Min 5.08 Max 7.62 0.51 Min 2.54 ± 0.25 0.48 ± 0.10 0.25 – 0.05 0° – 15° + 0.11 Hitachi Code JEDEC EIAJ Weight (reference value) DP-20N Conforms 1.26 g Unit: mm 12.6 13 Max 20 11 1 10 5.5 0.80 Max 2.20 Max *0.22 ± 0.05 0.20 ± 0.04 0.20 7.80 + – 0.30 1.15 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.10 ± 0.10 0° – 8° 0.70 ± 0.20 0.15 0.12 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-20DA Conforms 0.31 g Unit: mm 12.8 13.2 Max 20 11 7.50 1 0.935 Max 10 2.65 Max *0.27 ± 0.05 0.25 ± 0.04 0.25 10.40 + – 0.40 1.45 0° – 8° 0.57 0.70 + – 0.30 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.12 M *Dimension in [ ... ]

74LS373 PDF Datasheet Download