CIRCUIT DESCRIPTION

The GX434 is a high performance low cost monolithic 4x1 video multiplexer incorporating four bipolar switches with a common output, a 2 to 4 address decoder and fast chip select circuitry. The chip select input allows for multi-chip paralleled operation in routing matrix applications. The chip is selected by applying a logic 0 on the chip select input.

FEATURES

• low differential gain: 0.03 typ. at 4.43 MHz

• low differential phase: 0.012 deg. typ. at 4.43 MHz

• low insertion loss: 0.05 dB max at 100 kHz

• low disabled power consumption: 5.2 mW typ.

• high off isolation: 110 dB at 10 MHz

• all hostile crosstalk @ 5 MHz, 97 dB typ.

• bandwidth (-3dB) with 30 pF load, 100 MHz typ.

• fast make-before-break switching: 200 ns typ.

• TTL and 5 volt CMOS compatible logic inputs

• low cost 14 pin DIP and16 pin SOIC packages

• optimised performance for NTSC, PAL and SECAM applications

APPLICATIONS

Glitch free analog switching for...

• High quality video routing

• A/D input multiplexing

• Sample and hold circuits

• TV/ CATV/ monitor switching