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Número de pieza

componentes Descripción

Fabricante

NJM2249

3 – INPUT VIDEO SWITCH

Japan Radio Corporation  

NJM2249

3 – INPUT VIDEO SWITCH

■ GENERAL DESCRIPTION

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 signal. Two other input terminals are transistor

base input for luminant signal and so luminant level may be easily

fixed by outer circuit. Its operating supply voltage range is 4.75 to 13V

and bandwidth is 10MHz. Cross-talk is 70dB (at 4.43MHz).

■ FEATURES

● Operating Voltage (V+ = +4.75V to +13V)

● 3 Input - 1 Output

● Internal Clamp Function (VIN1)

● Internal Luminance Signal Control Function (VIN2, VIN3)

● Cross - talk 70dB (at 4.43MHz)

● Wide Frequency Range

● Package Outline DIP8, DMP8, SIP8, SSOP8

● Bipolar Technology

■ APPLICATION

● VCR, Video Camera, AV-TV, Video Disc Player

■ PIN CONFIGURATION

■ PACKAGE OUTLINE

NJM2249D

NJM2249M

NJM2249V

NJM2249L

NJM2249D

NJM2249M

NJM2249V

■ BLOCK DIAGRAM

NJM2249L

■ INPUT CONTROL SIGNAL-OUTPUT SIGNAL

SW1

L

H

L/H

SW2

L

L

H

OUTPUT SIGNAL

VIN1

VIN2

VIN3

Ver.2004-02-17

-1-

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