NTE1539 Integrated Circuit Color TV Sync Deflection Circuit Description: The NTE1539 is a multifunctional integrated circuit which is based on the internal circuit of the NTE1538. It incorporates various functions required for synchronization and deflection circuits of color television sets and especially aims at increasing the detections accuracy of the X–ray protection circuit. The ground pins for horizontal and vertical are provided separately to enable the easy layout of the printed circuit board. The NTE1539 differs from the NTE1538 in the following points: D The output circuit of synchronizing separation is emitter follower type D The X–ray protection circuit is differential dual inouts thyristor system D The ground pins for horizontal and vertical are provided separately. Functions: D Synchro Separator D Horizontal AFC D Vertical Driver D Vertical Blanking Pulse Making D Horizontal Oscillator D Vertical Oscillator D X–Ray Protector Features: D Multifunctional and Small–Size D Minimum Number of Parts Required D Horizontal and Vertical Oscillators being Stable to Variation of Ambient Temperature and Supply Voltage Owing to Small Warming–Up Drift. D Small Variation of Horizontal Oscillation Frequency D Good Linearity and Interface Owing to DC Bias at Vertical Output Stage being Sampling Controlled within Retrace Time. D Vertical Blanking Pulse Width being Freely Set Up According to Peripheral Parts. D High Detection Accuracy of X–Ray Protection Circuit. Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Supply Voltage, V14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Maximum Supply Current, I17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16mA Allowable Power Dissipation (TA = +60°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450mW Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +85°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C Recommended Operating Condition: (TA = +25°C unless otherwise specified) Recommended Supply Voltage, V14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Electrical Characteristics: (TA = +25°C, V14 = 12V, ICC17 = 13mA unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit VCC14 Current Dissipation ICC14 9.0 – 15.0 mA VCC17 Supply Voltage VCC17 11.8 – 13.2 V 9.0 – 11.0 Hz 50 – 60 Hz –0.5 – 0.5 Hz –0.028 – 4.0 – 7.0 times fH center 15.734kHz –750 – 750 Hz Supply Voltage Dependence of Horizontal Frequency VZ–VZ x 90% –50 – 50 Hz Temperature Characteristic of Horizontal Frequency TA = –10° to +60°C (IC only) –3.4 – 3.4 Hz/°C Horizontal Output Pulse Width fH = 15.734kHz 21.5 – 26.5 µs 4.9 – 8.3 mA Vertical Frequency Pull–In Range Vert Free Running Frequency fv fv center 55Hz Supply Voltage Dependence of Vertical Frequency V14 = 12 ±1V, 55Hz at 12V Temperature Characteristic of Vertical Frequency TA = –10° to +60°C Vertical Driver Amplification Factor Horizontal Free Running Frequency Horizontal Output Drive Current fH 0.028 Hz/°C Pin Connection Diagram AFC Output 1 18 Flyback Input Horiz Hold 2 17 VCC (115V) 16 Video Input Horiz OSC Output 3 GND 4 15 Sync Separator Output X–Ray Protect 5 14 VCC X–Ray Protect 6 13 Vert Blank Output GND 7 12 Vert Sync Input 11 Vert Hold Vert Drive Output 8 Vert Height 9 10 Vert Feedback 18 10 1 9 .870 (22.1) Max .250 (6.35) .150 (3.8) .100 (2.54) .800 (20.3) .125 (3.17) Min