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MC44251

Features: • 18 MHz Maximum Sampling Rate• ThreeState Output Buffers• Output Latching Minimizes Skew• Input Clamps Suitable for RGB and YUV Applications• BuiltIn Dither Generator with Subsequent Digital Correction• Single 5Volt Power Supply• Operating Tempe...

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SeekIC No. : 004415982 Detail

MC44251: Features: • 18 MHz Maximum Sampling Rate• ThreeState Output Buffers• Output Latching Minimizes Skew• Input Clamps Suitable for RGB and YUV Applications• BuiltIn Dither ...

MC44251 Data Sheet

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Part Number:
MC44251
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



Features:

• 18 MHz Maximum Sampling Rate
• ThreeState Output Buffers
• Output Latching Minimizes Skew
• Input Clamps Suitable for RGB and YUV Applications
• BuiltIn Dither Generator with Subsequent Digital Correction
• Single 5Volt Power Supply
• Operating Temperature Range: 40 to + 85
• VTN and HZ Input Threshold Hysteresis BuiltIn


Pinout

Connection Diagram


Specifications

Symbol
Characteristic
Value
Unit

VDD(A),VDD(D),VDD(R)

 DC Supply Voltage (referenced to VSS)
0.5 to + 6.0
V
Vin
 Input Voltage, All Pins
0.5 to VDD + 0.5
V
Iin
 DC Input Current per Pin
± 20
mA
Iout
 DC Output Current per Pin
± 25
mA
Tstg
 Storage Temperature Range
65 to + 150
NOTE: Maximum Ratings are those values beyond which damage to the device may occur. Functional  
           operationshould be restricted to the Recommended Operating Conditions. 

This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this highimpedance circuit. For proper operation, Vin and Vout should be constrained to the range VSS 3 (Vin or Vout) 3 VDD. 
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either VSS or VDD). Unused outputs must be left open.


Description

The MC44251 contains three independent parallel analogtodigital flash converters (ADC). Each ADC consists of 256 latching comparators and an encoder. Video may be ac or dc coupled. With ac coupling, input clamping provides for internal dc restoration. The MC44251 also contains a dithering generator for video processing performance enhancements.

The MC44251 is especially suitable as a frontend converter in TVpicture digital processing (pictureinpicture, frame storage, etc.). The high speed conversion rate of the ADC is suitable for video bandwidth of well over 6 MHz.




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