i do not recognize the symbol
are you sure its a resistor network?
it is not necessary to replace said resistor network with one from the same manufacturer
it is necessary to replace the functionality
that is, the number of pins, the internal circuit, the resistance, and the power rating
how many pins does your network have?
any idea what is in the white area to the left and right of the numbers?
it may help if you provide the part number of the Motorola IC next to it
i'm guessing the 104 means 10 kOhm