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NTE1693 Integrated Circuit Telephone Pulse Dialer (CMOS)
Description: The NTE1693 is a CMOS LSI pulse dialer in a 16-Lead DIP type package with redial which integrates a ceramic resonator as a frequency reference. Features: D Make Ratio: 33/39% Pin-Selectable. D Pulse Output: "1" True D Mute Output: "0" True D 17-Digit Redial with either * or # Input D Uses a Ceramic Oscillator as a Frequency Reference D Direct Telephone Line Operation D Uses either a Standard 2-of-7 Matrix Keyboard or a Single Contact Keyboard D Mute Signal Generated on Pulse Signal Absolute Maximum Ratings: Supply Voltage (Note 1), VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.2V Maximum Pin Voltage VIN1 (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V VIN2 (Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3V Maximum Power Dissipation (TA = +25C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 to +60C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Note 1. Referenced to GND Note 2. The maximum applicable voltage or any pin with respect to GND Note 3. The maximum applicable voltage on any pin with respect to VDD Recommended Operating Conditions: Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 to 6.0V
DC Electrical Characteristics: (TA = -30 to +60C unless otherwise specified)
Parameter Key Contact Resistance Keyboard Capacitance Input Voltage Symbol RKI CKI K1H KIRU KIRD IM IP VREF IMR IOP ILKG VDD = 2.5V, VOUT = 0.5V, Note 5 VDD = 2.5V, VOUT = 0.5V, Note 6 ISUPPLY = 150A, Note 7 All outputs in no-load state All outputs in no-load state VDD = 6.0V, VOUT = 6.0V, Note 5, Note 6 2-of-7 input mode, Note 4 Test Conditions Min - - 0.8VDD GND Key Pull-Up Resistance Key Pull-Down Resistance MUTE Sink Current Pulse Output Sink Current VDD-VRFF Value Memory Retention Current Operating Current MUTE, PULSE Leakage VDD = 6.0V, VIN = 4.8V - - 500 1.0 1.5 - - - Typ - - - - 4 100 - - 2.5 0.7 100 0.001 Max 1 30 VDD 0.2VDD - - - - 3.5 - 150 1 Unit k pF V V k k A mA V A A A
Note Note Note Note
4. 5. 6. 7.
Applies to key input pins (ROW1-ROW4 COL1-COL3) Applies to MUTE output pin. Applies to PULSE output pin Applies to VREF pin.
AC Electrical Characteristics:
Parameter Oscillator Frequency Keyboard Debounce Time Time for Valid Key Entry Oscillator Start-Up Time Pulse Rate Break Time Symbol fOSC tDB tKD tON PR tB tIDP Pin9 tied to V+ Pin9 tied to V- Inter-Digital Pause Note 9 Note 8 Test Conditions Min - - 40 - - - - - Typ 480 10 - 6 10 61 67 800 Max - - - - - - - - Unit kHz ms ms ms pps ms ms ms
Note 8. Typical values are exact with a nominal 480kHz frequency reference (except for oscillator start-up time) Note 9. Ceramic resonator should have the following equivalent values: R < 20, RA 70k, CO 500pF.
Pin Connection Diagram
VCC 1 Vref 2 Column 1 3 Column 2 4 Column 3 5 GND 6 OSC Input 7 OSC Output 8
16 Pulse Output 15 On-Hook/Test 14 Row 1 13 Row 2 12 Row 3 11 Row 4 10 Mute Output 9 Make/Break Select
16
9
.260 (6.6) Max
1
8
.785 (19.9) Max .200 (5.08) Max .245 (6.22) Min
.300 (7.62)
.100 (2.54) .700 (17.7)

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