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MAX4357 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX4357 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 42 page  General Description The MAX4357 is a 32 ✕ 16 highly integrated video crosspoint switch matrix with input and output buffers. This device operates from dual ±3V to ±5V supplies or from a single +5V supply. Digital logic is supplied from an independent single +2.7V to +5.5V supply. All inputs and outputs are buffered, with all outputs able to drive standard 75 Ω reverse-terminated video loads. The switch matrix configuration and output buffer gain are programmed through an SPI/QSPI™-compatible, three-wire serial interface and initialized with a single update signal. The unique serial interface operates in two modes facilitating both fast updates and initializa- tion. On power-up, all outputs are initialized in the dis- abled state to avoid output conflicts in large-array configurations. Superior flexibility, high integration, and space-saving packaging make this nonblocking switch matrix ideal for routing video signals in security and video-on- demand systems. The MAX4357 is available in a 128-pin TQFP package and specified over an extended -40°C to +85°C tem- perature range. Applications Security Systems Video Routing Video-On-Demand Systems Features o 32 ✕ 16 Nonblocking Matrix with Buffered Inputs and Outputs o Operates from a ±3V, ±5V, or +5V Supply o Each Output Individually Addressable o Individually Programmable Output Buffer Gain (AV = +1V/V or +2V/V) o High-Impedance Output Disable for Wired-OR Connections o 0.1dB Gain Flatness to 12MHz o Minimum -62dB Crosstalk, -110dB Isolation at 6MHz o 0.05%/0.1° Differential Gain/Differential Phase Error o Low 220mW Power Consumption (0.43mW per Point) 32 x 16 Nonblocking Video Crosspoint Switch with I/O Buffers ________________________________________________________________ Maxim Integrated Products 1 Ordering Information 19-2209; Rev 0; 10/01 PART TEMP. RANGE PIN-PACKAGE MAX4357ECD -40°C to +85°C 128 TQFP Pin Configuration appears at end of data sheet. SPI/QSPI are trademarks of Motorola, Inc. OUT0 OUT1 OUT15 IN0 CAMERAS IN1 IN31 MONITOR MONITOR MONITOR MAX4357 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Typical Operating Circuit MAX4357 32 x 16 SWITCH MATRIX POWER-ON RESET SERIAL INTERFACE THERMAL SHUTDOWN DECODE LOGIC DISABLE ALL OUTPUTS LATCHES 512 16 16 MATRIX REGISTER 112 BITS UPDATE REGISTER 16 BITS AV* AV* AV* AV* *AV = +1V/V OR +2V/V A0-A3 MODE IN0 IN1 IN2 IN31 DIN SCLK UPDATE CE RESET OUT0 OUT1 OUT2 OUT15 VCC VEE DGND VDD DOUT AOUT AGND Functional Diagram |
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