S5T3170

LOW POWER DTMF RECEIVER S5T3170 INTRODUCTION The S5T3170 is a complete Dual Tone Multiple Frequency (DTMF) receiver that is fabricated by low power CMOS and the SwitchedCapacitor Filter technology. This LSI consists of band split filters, which separates counting section which verifies the frequency and duration of the received tones before passing the corresponding code to the output bus. It decodes all 16 DTMF tone pairs into a 4bits digital code. The externally required components are minimized by on chip provision of a differential input AMP, clock oscillator and latched three state interface. The on chip clock generator requires only a low cost TV crystal as an external component. 18−DIP−300A 20−SOP−375 FEATURES Detects all 16 standard tones. Low power consumption: 15mW (Typ) Single power supply: 5V Uses inexpensive 3.58MHz crystal Three state outputs for microprocessor interface Good quality and performance for using in exchange system Power down mode/input inhibit ORDERING INFORMATION Device S5T3170X01-D0B0 S5T3170X01-S0B0 Package 18−DIP−300A 20−SOP−375 Operating − 25°C — + 75 °C APPLICATIONS PABX Central Office Paging Systems Remote Control Credit Card Systems Key Phone System Answering Phone Home Automation System Mobile Radio Remote Data Entry 1 S5T3170 LOW POWER DTMF RECEIVER PIN CONFIGURATION IN+ 1 2 3 4 5 6 7 8 9 S5T3170 18 17 16 15 14 13 12 11 10 VDD IN+ 1 2 3 4 5 6 7 8 9 10 (20-SOP) 20 19 18 17 S5T3170 16 15 1...