ISD4004-16M Single-chip voice record/playback

Single-chip voice record / playback device. Inside there are a eeprom chip that serves to store the results of the recording.

Specifications:
- 3 Volt DC Power Supply
- Duration 16 minutes
- Input Sample Rate 4 KHz
- Band Pass filter 1.7 Khz
- On Chip Oscillator
- Record 100,000 Cycles
- Message Retention 100 year
- Package PDIP-28