NJM2249

The NJM2249 has the following features including Operating Voltage (V+=+4.75V-+13V);3 Input-1 Output;Internal Clamp Function (VIN1);Internal Luminance Signal Control Function  (Vin2, Vin3);Crow-talk 70dB(at 4.43MHz);Wide Frequency Range;Package Outline DIPB, DMPB, SIPB, SSOP8;Bipolar Technology.

The NJM2249 is 3-input video switch for video and audio signal.One input terminals has sink-chip clamp function and so it is applied to fixed DC level of video sighal. Two other input terminals are transistor base input for luminant signal and so luminant level may be easily fixed by outer circuit. Its operatin' supply voltage range is 4.75 to 13V and bandwidth is 10MHz. CrOSS-talk is 70dB (at 4.43MfIz).This IC requires IM resistance between INPUT and GND pin for clamp type input since tl)e minute current causes an unstable pin voltage.This IC requires 1M resistance between INPUT and GND pin for clamp type input since the minute current causes an unstable pin voltage.NJM2249 requires 0.1uF capacitor between INPUT and GND, 1MS2 resistance between INPUT and GND for clamp type input at mute mode.

The NJM2249 described in this document are designed, developed and manufactured as contemplated for general use, including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as contemplated (1) for any use that includes fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for any use where chance of failure is intolerable (i.e., submersible repeater and artificial satellite).

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