NTE1688 Integrated Circuit TV Tuner Bandswitch Description: The NTE1688 is an integrated circuit in a 9–Lead SIP type package incorporating TV tuner bandswitch circuits and a 31V power supply circuit. Features: D Tuner Bandswitch Circuit with 31V Voltage Regulator Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Supply Current, I6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14mA Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 620mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C Storage Temperatuere Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Electrical Characteristics: (TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Input Threshold Voltage Vt VCC = 12V 1.5 – 2.5 V Input Threshold Current It VCC = 12V 100 – 500 µA Output Saturation Voltage VCE(sat) VCC = 12V, I0 = –60mA – 0.3 0.8 V Pin8 Output Saturation Voltage VCE(sat) VCC = 12V, I8 = 20mA – 0.2 0.5 V V6–5 VCC = 12V, I6 = 10mA 29.5 31.7 33.5 V TA = –20° to +60°C –1.0 0 +1.0 mV/°C – – ±50 mV Voltage Regulator Voltage Regulator with Ambient Temperature V6–5/TA ∆V6–5 Voltage Regulator Voltage for Drift As Per Condition After 5sec Elapsed with SW ON Input/Output Related (Logic Table) Input Output Remarks (Tuning Status) Pin3 Pin4 Pin1 Pin2 Pin7 Pin8 L L VCC Open Open L UHF H L Open VCC Open Open VHF–L L H Open Open VCC L VHF–H H H Open Open VCC Open – Pin Connection Diagram (Front View) 9 VCC 8 Output 4 7 Output 3 6 31.5V Supply Voltage 5 GND 4 Input 2 3 Input 1 2 Output 2 1 Output 1 .929 (23.6) .118 (3.0) .236 (6.0) 1 9 .098 (2.5) .100 (2.54) .118(3.0)