In an application I use the chip HMC640LP5 in the QFN32 package of Hittite. The design was done several years ago and I know that this device was cancelled three years ago but I could still order 500 units at this time, because a mobilecom company bought an wafer with the number AH2-HMC-640LP5-QFN32. Because of the fact that we want still manufacture some reader units containing this chip and we do not have any of this one left, I would need a replacement type, preferred in the same package and pin compatible. Is there any chip that I could still buy with the same function? Please answer quickly because it is quite urgent! Thanks!