dtmf dialer for binary data-in s5t0167 1 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. 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 to 8.0v ordering information device package operating temperature S5T0167X01-d0b0 14 ? dip ? 300 ? 30 c to +70 c S5T0167X01-s0b0 14 ? sop ? 225b 14 ? dip ? 300 14 ? sop ? 225b
s5t0167 dtmf dialer for binary data-in 2 block diagram pin configuration osc control circuit data latch & decoder mute logic row & column tone counter d/a converter & mixing tone out mute osc in osc out ten st gs d0 d1 d2 d3 v dd v ss 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 s5t0167 v dd ten st gs v ss osc in osc out mute tone out d3 d2 d1 d0 nc
dtmf dialer for binary data-in s5t0167 3 pin description absolute maximum ratings pin no symbol descriptions 1v dd positive supply input 2 ten 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 and output transistor are turned off. a low to high transition on this pin latches in data from d0 to d3, and tone generation continues until this pin is connected low again. 3st single tone enable. an internal pull-up resistor is in a chip. when this pin connects to logic low, the device is in a single tone mode. for normal operation, connects this pin to v dd or open-circuit. 4 gs group selection input. this pin is used to select the high group or low group frequency, when the device is in single tone mode. an internal pull-up resistor is in a chip. when this pin connects to v dd or open, the high group will be generated, and when connects to v ss , the low group will be generated. 5v ss negative supply input 6 osc in oscillator input 7 osc out oscillator output 8 mute n-channel open drain output. this pin is a logic high state, when the tone enable pin is a high state. this pin goes a logic low state, when the tone enable pin is a low state. 9, 10, 11, 12 d0, d1, d2, d3 data-inputs. these are the inputs for binary-coded data, which is latched in on the rising edge of the tone enable signal. 13 n.c no connection. 14 tone out this output is the open emitter of a npn transistor. when an external load resistor is connected from this pin to v ss , the tone generates on the tone enable pin = high. characteristic symbol value unit supply voltage v dd 9v mute voltage v i (mute) 9v input voltage v i v dd + 0.3 to v ss - 0.3 v power dissipation p d 500 mw operating temperature t opr ? 30 to + 70 c storage temperature t stg ? 55 to + 125 c
s5t0167 dtmf dialer for binary data-in 4 electrical characteristics (v ss = 0v, 2v dtmf dialer for binary data-in s5t0167 5 table 2. function table key board data input tone output equivalent d3 d2 d1 d0 f l (hz) f h (hz) 1 0001 697 1209 2 0010 697 1336 3 0011 697 1477 4 0100 770 1209 5 0101 770 1336 6 0110 770 1477 7 0111 852 1209 8 1000 852 1336 9 1001 852 1477 0 1010 941 1336 * 1011 941 1209 # 1100 941 1477 a 1101 697 1633 b 1110 770 1633 c 1111 852 1633 d 0000 941 1633
s5t0167 dtmf dialer for binary data-in 6 notes
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