W91620 series datasheets. Manufacturer: Winbond Electronics.

W91620 10-memory tone/pulse dialer with two-stage redial functions in 18-pin P-DIP18 package. Operational temperature range from -20°C to 70°C. Datasheet*) W91621 10-memory tone/pulse dialer with two-stage redial functions in 18-pin P-DIP18 package. Operational temperature range from -20°C to 70°C. Datasheet*)

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