HC2411 Tone Ringer HSiN Semiconductor Pte Ltd www.hsin.com.sg 1. Overview The HC2411 is a bipolar integrated circuit designed for telephone bell replacement Low power dissipation Adjustable output tune Adjustable switching rate Built-in hysteresis prevents false triggering DIP8 2. Block Diagram and Pin Description 2.1 Block Diagram 1 Hysteresis 2 Regulator 5 3 Low Freq. High Freq. Output Oscillator Oscillator AMP 4 6 8 7 2.2 Pin Description Pin No. 1 2 3 4 Symbol VCC Description Supply Voltage TR Triggering Input CSf RSf Low Frequency Oscillation Capacitor Low Frequency Oscillation Resistance Pin No. 5 6 7 8 Page 1 of 3 Symbol GND RTf CTf OUT Description GND High Frequency Oscillation Resistance High Frequency Oscillation Capacitor Output 3. Electrical Characteristics 3.1 Absolute Maximum Ratings Unless otherwise specified, Tamb= 25 Parameter Symbol Supply Voltage VCC Power Dissipation PD Operating Temperature Tamb Storage Temperature Tstg Value 30 400 -45~65 -65~150 Unit V mW 3.2 Electrical Characteristics Unless otherwise specified, Tamb= 25 Parameter Symbol Supply Voltage Initiation Voltage Initiation Current Sustain Voltage Sustain Current VCC VINIT IINIT VSUST ISUST Output Level High VOH Output Level Low VOL High Frequency 1 High Frequency 2 Low Frequency fH1 fH2 fSW Test Conditions RSL=6.8k No load, VCC=VSUST VCC=21V, I8= -15mA V6=6V, V7=0V VCC=21V, I8=15mA V7=6V, V6=0V RTF =191k, CTF =6800pF RTF =191k, CTF =6800pF RSF =165k, CSF =0.47uF Min Value Typ 17 1.4 9.7 0.7 19 2.5 11.0 1.4 Max 29.0 21 4.2 12.0 2.5 17 19 21 V 1.6 V 563 704 11 Hz Hz Hz 461 576 9 4. Test Circuit 1 8 2 RSL 6.8k ＨC2411 3 C2 + 22 7 6 6800pF R sf 4 F C sf I8 R tf 191k 5 165k 0.47 F 5. Characteristics Curve Icc ─ Vcc Supply Current Icc mA 5 No load 4 3 3.3K 6.8K 2 1 0 9.1K 10 20 Supply Voltage Page 2 of 3 30 Vcc 40 V C tf 512 640 10 Unit V V mA V mA 6. Application Circuit C1 R1 T 1 F 2k C3 /250V 1 8 0.22 2 RSL 6.8k R C2 + 22 F /50V 3 29V HC2411 7 6800pF 4 C sf 165k 0.47 F 100k R tf 191k 6 R sf F C tf 5 15 k 8 1300 7. Package Dimensions Page 3 of 3