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MC145740

PinoutSpecifications Symbol Parameter Units Value VDD DC Supply Voltage V -0.5to7.0 Vin Input Power,All Pins V -0.5toVCC+0.5 I DC Current Per Pin mA ±20 PD Power Dissipation mW 500 TSTG Storage Temperature Range °C -65 to 150 Descr...

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SeekIC No. : 004415522 Detail

MC145740: PinoutSpecifications Symbol Parameter Units Value VDD DC Supply Voltage V -0.5to7.0 Vin Input Power,All Pins V -0.5toVCC+0.5 I DC Current Per Pin mA ±20 ...

MC145740 Data Sheet

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Part Number:
MC145740
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



Pinout

Connection Diagram


Specifications

Symbol Parameter Units
Value
VDD DC Supply Voltage
V
-0.5to7.0
Vin Input Power,All Pins
V
-0.5toVCC+0.5
I DC Current Per Pin
mA
±20
PD Power Dissipation
mW
500
TSTG Storage Temperature Range
°C
-65 to 150



Description

The MC145740 is a silicon gate HCMOS LSI designed for general purpose Dual Tone Multiple Frequency (DTMF) communications, and contains a DTMF signal generator and a receiver for all 16 standard digits.

The generator block of MC145740 has a differential line driver which drives a 600 W load with 0 dBm level. The transmit signal level is adjusted in 1 dB steps by the programmable attenuator.

The receiver block of MC145740 has an Auto Gain Control (AGC) amplifier to demodulate 50 dB (typ) dynamic range of DTMF signals to the hexadecimal codes.

The MC145740 also includes a serial control interface that permits a CPU to exercise the following builtin features.
• Single Power Supply: 3.6 to 5.5 V
• DTMF Generator and Receiver for All 16 Standard Digits
• 0 dBm Line Driver Into 600 Load
• AGC Amplifier
• Programmable Transmit Attenuator
• Serial Control Interface
• Power Down Mode, Less Than 1 A




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