LM3915N-1 LED sloupec IO

Populární sloupcový budič LED diod pro audio a jiné aplikace. 
Široké napájecí napětí 3 – 25V DC. 
Specifikace: 
3 dB/step, 30 dB range 
Drives LEDs, LCDs, or vacuum fluorescents 
Bar or dot display mode externally selectable by user 
Expandable to displays of 90 dB n Internal voltage reference from 1.2V to 12V
Operates with single supply of 3V to 25V 
Inputs operate down to ground 
Output current programmable from 1 mA to 30 mA 
Input withstands ±35V without damage or false outputs 
Outputs are current regulated, open collectors 
Directly drives TTL or CMOS n The internal 10-step divider is floating and can be referenced to a wide range of voltages