The requested file:
https://pdf.datasheetcatalog.com/datasheet/motorola/74LS145.pdf
is the data sheet for the following electronic components:

Motorola

#	Part Name	Description
1	74LS145	1-OF-10 DECODER/DRIVER OPEN-COLLECTOR
2	SN54LS145	1-OF-10 DECODER/DRIVER OPEN-COLLECTOR
3	SN54LS145J	1-OF-10 DECODER/DRIVER OPEN-COLLECTOR
4	SN74LS145D	1-OF-10 DECODER/DRIVER OPEN-COLLECTOR
5	SN74LS145N	1-OF-10 DECODER/DRIVER OPEN-COLLECTOR

Select the part name and then you can download the datasheet in PDF format.