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TB1227CNG Datasheet(PDF) 78 Page - Toshiba Semiconductor

Part No. TB1227CNG
Description  VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL / NTSC / SECAM SYSTEM COLOR TV
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Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
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TB1227CNG Datasheet(HTML) 78 Page - Toshiba Semiconductor

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TB1227CNG
2004-05-24
78
TEST CONDITION (Unless otherwise specified : H, RGB VCC = 9V ; VDD, Fsc VDD, Y / C VCC = 5V ; Ta = 25±3°C ; BUS = preset value)
SW MODE
SUB-ADDRESS & BUS DATA
NOTE
ITEM
S18 S19 S20 S21 S22 S31 S33 S34 S51
——
———
MEASURING METHOD
T38
Text Input Threshold
Level
A
A
A
A
B
B
B
B
A
(1) Connect power supply to pin 21 (Digital Ys) and impress 1.5V to it.
(2) Connect power supply to pin 19 (Digital G IN). While raising supply
voltage gradually from 0V, measure supply voltage when output
signal of pin 13 (G OUT) changes (Vtxt).
(3) Raising the supply voltage to pin 19 furthermore to 4V, confirm that
there is no change in the output signal of pin 13 (G OUT).
T39
OSD Input Threshold
Level
——
———
(1) Connect power supply to pin 21 (Digital Ys) and impress 2.5V to it.
(2) Connect power supply to pin 19 (Digital G IN). While raising supply
voltage gradually from 0V, measure supply voltage when output
signal of pin 13 (G OUT) changes (Vosd).
(3) Raising the supply voltage to pin 19 furthermore to 4V, confirm that
there is no change in the output signal of pin 13 (G OUT).


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