Which shift register to get

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noob question on parts.

i working on project, , want add more inputs using shiftin().  example on arduino site uses cd4021b shift register. 

my dumb question is: need have cd4021b or there other chips work in similar fashion.  going in frys electronics in phoenix tomorrow, , pick up, not sure able find exact chip.  if find shift register 4021 name, same thing?

i have 74hc595's shiftout(), thinking work output.  correct?

thanks,
rob

http://www.ti.com/lit/ds/snos323a/snos323a.pdf
pretty standard parallel load, serial out shift register.

'595, serial in, parallel out, correct.

part '374, octal latch, can wired shift register.


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