|Datasheet||Download MC145436AP datasheet
Advance Information Low-Power Dual Tone Multiple Frequency Receiver
The is a lowpower and improved input sensitivity version of the MC14LC5436. The is a silicon gate CMOS LSI device containing the filter and decoder for detection of a pair of tones conforming to the DTMF standard with outputs in hexadecimal. Switched capacitor filter technology is used together with digital circuitry for the timing control and output circuits. The MC145436A provides excellent power line noise and dial tone rejection and is suitable for applications in central office equipment, PABX, and keyphone systems, remote control equipment and consumer telephony products. The MC145436A offers the following performance features: Single 5 V Power Supply Detects All 16 Standard Digits Uses Inexpensive 3.58 MHz Crystal Provides Guard Time Controls to Improve Speech Immunity Output in 4Bit Hexadecimal Code BuiltIn 60 Hz and Dial Tone Rejection Pin Compatible with SSI204, MC145436, and MC14LC5436 Functional and Applicational Compatible with MC145436 and MC14LC5436
This document contains information on a new product. Specifications and information herein are subject to change without notice.
697 Ain 60 Hz REJECTION FILTER 1477 1633 ATB Xen Xin Xout VOLTAGE REF OUTPUT REGISTER CHIP CLOCKS D4 OUTPUT DECODER ENB TIMING CIRCUIT DV PREAMP GTMAXIMUM RATINGS (Voltages Referenced to GND Unless Otherwise Noted)
Rating DC Supply Voltage Input Voltage, Any Pin Except Ain Input Voltage, Ain DC Current Drain per Pin Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VDD Vin PD TA Tstg Value 0.5 to VDD + 0.5 VDD 10 to VDD + 150 Unit mW °C This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid applications of any voltage higher than the maximum rated voltages to this high impedance circuit. For proper operation it is recommended that Vin and Vout be constrained to the range VSS (Vin or Vout) VDD. Reliability of operation is enhanced if unused inputs are tied to and appropriate logic voltage level (e.g., either VSS or VDD).
(All Polarities Referenced to VSS 0 V, VDD + 85°C, Unless Otherwise Noted) Parameter DC Supply Voltage Supply Current (fCLK = 3.58 MHz) Input Current Input Voltage Low Input Voltage High Iout Data and DV Pins: Vout 4.5 V (Source) Iout Data and DV Pins: Vout 0.4 V (Sink) Input Impedance Fanout Input Capacitance Ain ATB Xen, ENB GT ENB, Xin, Xen ENB, GT, Xen ENB, GT, Xen Symbol VDD IDD Iin VIL VIH IOH IOL Rin Fout Cin Min Typ Max pF Unit mA kANALOG CHARACTERISTICS (VDD + 85°C, Unless Otherwise Noted)
Parameter Signal Level for Detection (Ain) Twist = High Tone/Low Tone Frequency Detect Bandwidth 60 Hz Tolerance Dial Tone Tolerance (Note 1) (Dial Tone + 440) Noise Tolerance (Notes 1 and 2) Power Supply Noise (Wide Band) Talk Off (Mitel Tape #CM7290) NOTES: 1. Referenced to lower amplitude tone. 2. Bandwidth limited to 3.4 kHz) Gaussian Noise. Min Hz) Typ 2.5 2 Max Unit dBm dB mV pp Hits
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