The ISD4004-08MEY is IC VOICE REC/PLAY 8MIN 28-TSOP, that includes ISD4004 Series, they are designed to operate with a 28-TSSOP (0.465", 11.80mm Width) Package Case, Mounting Type is shown on datasheet note for use in a Surface Mount, that offers Interface features such as SPI/Microwire, Supplier Device Package is designed to work in 28-TSOP, as well as the 3.4kHz Filter Pass Band, the device can also be used as 8 Min Duration.

The ISD4004-08MEYI is IC VOICE REC/PLAY 8MIN 28-TSOP, that includes 28-TSOP Supplier Device Package, they are designed to operate with a ISD4004 Series, Package Case is shown on datasheet note for use in a 28-TSSOP (0.465", 11.80mm Width), that offers Mounting Type features such as Surface Mount, Interface is designed to work in SPI/Microwire, as well as the 3.4kHz Filter Pass Band, the device can also be used as 8 Min Duration.

The ISD4004-08MEYIR is IC VOICE REC/PLAY 8MIN 28-TSOP, that includes 8 Min Duration, they are designed to operate with a 3.4kHz Filter Pass Band, Interface is shown on datasheet note for use in a SPI/Microwire, that offers Mounting Type features such as Surface Mount, Package Case is designed to work in 28-TSSOP (0.465", 11.80mm Width), as well as the ISD4004 Series, the device can also be used as 28-TSOP Supplier Device Package.

The ISD4004-08MP is IC VOICE REC/PLAY 8MIN 28-DIP, that includes Through Hole Mounting Type, they are designed to operate with a SPI/Microwire Interface, Series is shown on datasheet note for use in a ISD4004, that offers Duration features such as 8 Min, Filter Pass Band is designed to work in 3.4kHz, as well as the 28-DIP (0.600", 15.24mm) Package Case, the device can also be used as 28-DIP Supplier Device Package.