This part is a kind of semiconductor called C1251.
Function of this product has Bipolar Analog Integrated Circuit.
Manufacturers : Renesas
Image and pinout :
Some of the text within the PDF file :
Bipolar Analog Integrated Circuit μ PC1251, 358 μ PC1251, 358 C 50 μ A TYP. V GND V GND μ PC1251 μ PC358 DC μ PC451, 324 2 mV TYP. 5 nA TYP. 100000 TYP. DIP, SOP μ PC1251C μ PC1251C (5) μ PC1251G2 μ PC1251G2 (5) μ PC358C μ PC358C (5) μ PC358G2 μ PC358G2 (5) μ PC1251 DC DC DC DC 8 8 8 8 BT DIP 7.62 mm 300 SOP 5.72 mm 225 DIP 7.62 mm 300 SOP 5.72 mm 225 125°C G10526JJBV0DS00 December 2007 NS 11 " " PDF 1993 μ PC1251, 358 1/2 6 μA 6 μA Q2 I I Q1 Q3 Q4 CC 100 μA V Q5 Q6 Q7 RSC OUT IN Q8 Q9 Q11 Q10 Q12 Q13 50 μA V Marking side μ PC1251C, 1251G2 μ PC358C, 358G2 OUT1 1 8 V+ II1 2 IN1 3 1 7 OUT2 2 6 II2 V− 4 5 IN2 TA = 25°C 1 2 3 6 1. 2. V GND VV VID VI VO PT ts TA Tstg 0.3 V μ PC1251C μ PC1251C (5) 350 4 μ PC1251G2 μ PC12 [ ... ]