S5T0167

DTMF DIALER FOR BINARY DATA-IN S5T0167 INTRODUCTION The S5T0167 is a DTMF dialer for 4 bit binary data input from the microprocessor. When the tone enable input is low, the oscillator is inhibited and the device is in a low power consumption at standby mode.On the low to high transition of tone enable, data is latched into the device and selected the standard DTMF signals. The N-channel open drain output provides a MUTE output during tone generation. 14−DIP−300 FEATURES Direct interface with microprocessor Generates 16 standard tones Uses inexpensive TV crystal or ceramic resonator (3.579545MHz) Very low total harmonic distortion Low power standby mode Binary data inputs with latches Wide Operating Voltage : 2.5 ~ 8.0V 14−SOP−225B ORDERING INFORMATION Device S5T0167X01-D0B0 S5T0167X01-S0B0 Package 14−DIP−300 14−SOP−225B Operating Temperature − 30 to +70°C 1 S5T0167 DTMF DIALER FOR BINARY DATA-IN BLOCK DIAGRAM VDD MUTE OSC IN OSC OSC OUT MUTE LOGIC TEN ST GS D0 D1 D2 D3 DATA LATCH & DECODER 4 D/A CONVERTER & MIXING CONTROL CIRCUIT ROW & COLUMN TONE COUNTER TONE OUT VSS PIN CONFIGURATION VDD TEN ST GS VSS OSC IN OSC OUT 1 2 3 4 5 6 7 S5T0167 14 13 12 11 10 9 8 TONE OUT NC D3 D2 D1 D0 MUTE 2 DTMF DIALER FOR BINARY DATA-IN S5T0167 PIN DESCRIPTION Pin No 1 2 Symbol VDD TEN Positive supply input Tone enable input. An internal pull-up resistor is in a chip. When this pin connects to logic low, the oscillator is inhibited and the tone generators a...