This part is a kind of semiconductor called CSC31002CP.

Function of this product has Tone Ringer.

Manufacturers : HUAJING

Image and pinout :

Some of the text within the PDF file :

1. CSC31002CP CSC31002CP 2. 2.1 DIP8 1 2 2.2 1 2 3 4 5 VCC TR CSf RSf 34 67 5 GND 6 RTf 7 CTf 8 OUT 8 14 0510 5807123-5542 14 0510 5803016 3. 3.1 3.2 4. C31002CP Tamb= 25 VCC PD Tamb Tstg 30 400 -45~65 -65~150 V mW Tamb= 25 VCC VINIT IINIT VSUST RSL=6.8k 29.0 V 17 19 21 V 1.4 2.5 4.2 mA 9.7 11.0 12.0 V ISUST VCC=VSUST 0.7 1.4 2.5 mA VCC=21V VOH I8= -15mA( ) 17 19 21 V V6=6V V7=0V VCC=21V VOL I8=15mA( ) 1.6 V V7=6V V6=0V 1 fH1 RTF =191k CTF =6800pF 461 512 563 Hz 2 fH2 RTF =191k CTF =6800pF 576 640 704 Hz fSW RSF =165k CSF =0.47uF 9 10 11 Hz C2 + 22 F 18 RSL 2 CS31C0202411 7 Rtf 6.8k 191k 36 R sf 4 Csf 165k 0.47 F 6800pF 5 I8 C tf 24 C31002CP 5. mA Icc Vcc 5 4 Icc 3 3.3K 2 6.8K 1 9.1K 0 10 20 30 40 V Vcc 6. C1 R1 T 1 F 2k / [ ... ]

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