LM1291N National Semiconductor, LM1291N Datasheet
LM1291N
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LM1291N Summary of contents
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... H drive disabled for Horizontal output transistor protected against accidental Y turn-on during flyback Capacitor-programmable frequency ramping df Y protects H output transistor during scanning mode changes FIGURE 1 Order Number LM1291N See NS Package Number N28B June 1995 VCO TL H 12323– 1 RRD-B30M115 Printed ...
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... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Input Voltage V DC Pins 15 23 Pins 4 5 Pins 8 28 Pins Power Dissipation ( (Above 25 C Derate Based on and T JA ...
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... SET SET 15k SET SET 0 025 T and the ambient temperature T Jmax the number given in the Absolute Maximum Ratings whichever is lower For Jmax these parts when board mounted follow LM1291N resistor where 12V (Continued) Limit Units (Note (max (max (max (min) ...
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Test Circuit 4 ...
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Block Diagram Pin Descriptions See Figures 4 through 15 for input and output schematics Pin 1 - CLAMP CNTL This low-impedance current-mode input pin is internally biased to 2V The direction of current sets the pulse position (back porch or ...
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Pin Descriptions (Continued) Pin SYNC OUT The sync processor outputs active-low H HV sync derived from the active sync input (pin 9 or pin 12) Pin 11 stays low in the absence of sync input See ...
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Application Hints (Continued) 3 Video mute Numerous designs require video blanking during scanning mode transitions The LM1291 provides an active-low pulse at pin 3 when triggered by a step change of H sync frequen- cy from The ...
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Input Output Schematics (Continued 12323 – 7 FIGURE 12323 – 8 FIGURE 12323– 9 FIGURE 9 8 ...
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Input Output Schematics (Continued) FIGURE 10 FIGURE 12 FIGURE 12323 – 12323 – 12323 – 12323– 11 FIGURE 12323– 13 FIGURE ...
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Typical Application 10 ...
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11 ...
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... Italiano National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications Order Number LM1291N NS Package Number N28B 2 A critical component is any component of a life ...