LMH6586

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SNCS105D – JULY 2008 – REVISED MARCH 2013

LMH6586 32x16 Video Crosspoint Switch

Check for Samples: LMH6586

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FEATURES

DESCRIPTION

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•

32 Inputs and 16 Outputs

The

LMH6586

is

a

non-blocking

analog

video

•

AC-Coupled Inputs with Integrated DC Restore

crosspoint switch designed for routing standard

Clamp

NTSC or PAL composite video signals. The non-

•

Individually Addressable Outputs

blocking architecture allows any of the 32 inputs to be

connected to any of the 16 outputs, including any

•

Pin-Selectable Output Buffer Gain (1 V/V or 2

input that is already connected. Each input has an

V/V)

integrated DC restore clamp for biasing of the AC-

•

–3 dB Bandwidth = 66 MHz

coupled video signal. The output buffers have a

•

common selectable gain setting of 1X or 2X and can

drive loads of 150

Ω.

•

−70 dB Off-Isolation @ 6 MHz

•

Individual Input and Output Shutdown Modes

The LMH6586 features two types of input signal

detection for convenient monitoring of activity on any

•

Device Power Down Mode

input channel. Video detection can be configured to

•

Video Detection with Programmable Threshold

indicate when either “presence of video” or “loss of

(8 Levels)

video” is detected across the video threshold level

•

Sync Detection with Pin-Configurable

controlled by a programmable register. Additionally,

sync detection can be configured to indicate when

Threshold

“loss of sync” is detected across the sync threshold

•

level controlled by a DC voltage input.

Slave Address

The switch configuration and other parameters are

•

Single 5V Supply Operation

•

Extra Video Output (VOUT_16) for External

device address is configurable via two external pins

Video Sync Separator

allowing up to four LMH6586 devices, each with a

APPLICATIONS

facilitate expansion of the crosspoint matrix array size

(e.g. 64 x 16). The LMH6586 operates from a

•

CCTV Security and Surveillance Systems

common single 5V supply for its analog sections as

•

Analog Video Routing

LMH6586 is offered in a space-saving 80-pin TQFP.

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PRODUCTION DATA information is current as of publication date.

Copyright © 2008–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.