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LC7940YC

Features: • 80 builtin LCD display drive circuits• 1/8 to l/128 display duty cycle• Serial or 4bit parallel data input• Chip disable for low power dissipation for largesized panels• Bias supply voltags can be supplied externally• Operating supply voltage and amb...

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SeekIC No. : 004392235 Detail

LC7940YC: Features: • 80 builtin LCD display drive circuits• 1/8 to l/128 display duty cycle• Serial or 4bit parallel data input• Chip disable for low power dissipation for largesized ...

LC7940YC Data Sheet

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Part Number:
LC7940YC
Supply Ability:
5000

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  • 1~5000
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  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• 80 builtin LCD display drive circuits
• 1/8 to l/128 display duty cycle
• Serial or 4bit parallel data input
• Chip disable for low power dissipation for largesized panels
• Bias supply voltags can be supplied externally
• Operating supply voltage and ambient temperature
   - 2.7 to 5.5 V logic supply ( VDD) at Ta = 20 to +85°C
   - 8 to 20V LCD supply (VDD VEE ) at Ta = 20 to +85 °C
• CMOS process


Specifications

Parameter
Symbol
Ratings
Unit
Logic supply voltge
VDD max
0.3 to +7.0
V
LCD supply voltage, See Note below
VDD VEE max
0 to 22
V
Input voltage
VI max
0.3 to VDD + 0.3
°C
Operating temperature range
Topr
20 to +85
°C
Storage temperature range
Tstg
40 to +125
°C
Note
VDD V1 > V3 > V4 > VEE


Description

The LC7940YC and LC7941YC are segment driver ICs for driving large, dotmatrix LCD displays. They read 4bit parallel or serial input, display data from a controller into an 80bit latch, and then generate LCD drive signals corresponding to that data.

The LC7940YC and LC7941YC feature mirrorimage pin assignments, allowing them to be used together to increase
component density. They are designed to be used with the LC7942YC common driver to drive large LCD panels.




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