S5T0167 SAMSUNG | Alldatasheet

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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.

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

ORDERING INFORMATION

Device Package Operating Temperature S5T0167X01-D0B0 14 −DIP −300 − 30 to +70 °C S5T0167X01-S0B0 14 −SOP −225B 14 −DIP −300 14 −SOP −225B

S5T0167 DTMF DIALER FOR BINARY DATA-IN 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 V DD V SS 7 8 S5T0167 V DD TEN ST GS V SS OSC IN OSC OUT MUTE TONE OUT NC

DTMF DIALER FOR BINARY DATA-IN S5T0167 PIN DESCRIPTION ABSOLUTE MAXIMUM RATINGS Pin No Symbol Descriptions

1 V 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 ~ D3, and tone generation continues until this pin is connected low again. 3 ST 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.

5 V 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 9 V MUTE Voltage V I (MUTE) 9 V 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

ELECTRICAL CHARACTERISTICS

(V SS = 0V, 2V<V DD <8V, f OSC = 3.579545MHz, Ta = 25 °C, unless otherwise noted)

APPLICATION INFORMATION

When tone enable input is low, oscillator is inhibited, being allowed to low power standby mode since transistor goes to turn off state, so D0 to D3 input data is ignored. However if tone enable input goes from low to high, input data is latched and tone output is enabled, and it is correspond to data input. This device is designed with 14 levels, 28 segments in each single-tone. The column tone is pre-emphasized 2dB than the row tone. Characteristic Symbol Test Conditions Min. Typ. Max. Unit Operating voltage range V DD − 2.0 − 8.0 V Operating Current IDD V DD = 3.0V, MUTE Open − − 1.5 mA Standby Current ISB R L = 10K, D0 to D3 open, V DD = 3.0V − 50 100 µA Input Pull-up resistance R I (PULL) DI0 to DI3, TEN − 100 − K Ω Input Voltage V IL DI0 to DI3, TEN V SS − 0.2V DD V V IH 0.8V DD − V DD V Output Current (MUTE) IOL (MUTE) V DD = 3V, V O = 0.5, TEN = LOW 0.5 1.5 − mA IOH (MUTE) V DD = 3V, V O = V DD , TEN = HIGH − 1 2 µA Tone Output Level V O (TONE) V DD = 3V, R L = 5k Ω , Row Tone −14 − −11 dBV Ratio of Column to Row dB CR V DD = 3V, R L = 5k Ω 1 2 3 dB THD (Dual Tone) THD 1MHz Bandwidth, V DD = 5V, R L = 5k Ω −20 − − dB Oscillator Start-up Time tST (OSC) 90% Amplitudes, V DD = 3.0V − 4 − mS Data Set-up Time tSU (DATA) V DD = 3.0V 200 − − nS Data Hold Time tH (DATA) V DD = 3.0V 200 − − nS Data Duration tW (DATA) V DD = 3.0V 600 − − nS Table 1. Single Tone Frequency

Table 2. Function Table

S5T0167 DTMF DIALER FOR BINARY DATA-IN NOTES