MAX458-MAX459 MAXIM [Maxim Integrated Products], MAX458-MAX459 Datasheet
MAX458-MAX459
Related parts for MAX458-MAX459
MAX458-MAX459 Summary of contents
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... Description The MAX458/MAX459 are crosspoint switches with eight input channels and four high-speed, buffered output channels. The MAX458 output buffer is configured with a gain of one, while the MAX459 buffer has a gain of two. In each device, any one of eight input lines can be connect any of four output amplifiers. The output buffers are capable of driving loads of 75Ω ...
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... T A MIN MAX (Note ±4.75V to ±5.25V 0V, input programmed to one output IN Input programmed to one output Input channel on or off T = +25°C A MAX458 (Note MIN MAX T = +25°C A MAX459 (Note MIN MAX V ...
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... IRE) as reference white and -285.7mV (-40 IRE) as sync. The modu- lation used was 285.7mV (40 IRE), which conforms to the EIA color signal standards. Note 7: For MAX458, step input from +2V to 0V; for MAX459, step input from +1V to 0V. All unused channels grounded and all unused amplifiers disabled. ...
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Video Crosspoint Switches with Buffers TIMING CHARACTERISTICS (Note 12) = -5V, -2V ≤ V ≤ +2V, output load resistor ( +5V PARAMETER SYMBOL PARALLEL-MODE TIMING (see Figure 1) – — – Address to ...
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... PHASE - 108 144 180 0 100 250 FREQUENCY (MHz) OUTPUT IMPEDANCE vs. FREQUENCY 100 FREQUENCY (MHz) MAX458 SMALL-SIGNAL PULSE RESPONSE +200mV -200mV +100mV -100mV 10ns/div MAX459 GAIN vs. FREQUENCY GAIN PHASE 36 72 108 144 180 0 ...
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Video Crosspoint Switches with Buffers ______________________________________________________________Pin Description PIN NAME DIP PLCC 1 1 DIN Serial Data Input 10, 14, 16, 18, 16, 18, 20, GND Ground 27, 33, 35 30, 37, 39 ...
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... IN5 IN6 IN7 75 18 IN0 IN7 IN0 IN7 IN0 IN7 PIN NUMBERS APPLY TO DIP PACKAGE. Figure 1. Block Diagram and Typical Operating Circuit _______________________________________________________________________________________ MAX458 MAX459 35 34 OUT0 OUT0 33 ENABLE OUT1 32 OUT1 0.1 F ENABLE 31 OUT2 30 OUT2 0.1 F ENABLE ...
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... Video Crosspoint Switches with Buffers UPDATE MAX458 MAX459 Figure 2. Parallel-Logic Block Diagram 8 _______________________________________________________________________________________ ANALOG INPUTS IN0 • • • INPUT SWITCH 0 REGISTER REGISTER 1 1 CONTROL 7 8-1 MUX • • • INPUT SWITCH 0 REGISTER REGISTER 8-1 MUX 2 2 CONTROL 7 • ...
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... The amplifier outputs can be disabled, which is useful for creating large arrays. When disabled, the MAX458 presents an output impedance of approxi- mately 1MΩ. The MAX459 disabled output impedance is 1kΩ (to ground), due to the internal feedback resis- tors used to achieve the gain of two. – ...
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... the state of the last data bit. The MAX458/MAX459 input data in 16-bit blocks. SPI and Microwire interfaces output data in 8-bit blocks, thereby requiring two write cycles to input data. The QSPI interface allows variable word lengths from bits and can be loaded into the crosspoint in one write ...
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... Video Crosspoint Switches with Buffers DIN ONE CS SHOT D Q SCLK MAX458 MAX459 Q D DOUT Figure 5. Serial-Mode Logic Block Diagram ______________________________________________________________________________________ IN0 ANALOG INPUTS IN 0 SWITCH CLK REGISTER 16-BIT SWITCH REGISTER SHIFT 1 7 REGISTER 0 SWITCH REGISTER SWITCH REGISTER 3 7 OUT ...
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... D1 40 CHIP SELECT 39 SERIAL CLOCK MAX458 V CC MAX459 THE DOUT-SI CONNECTION IS NOT REQUIRED FOR WRITING TO THE MAX458/MAX459, BUT MAY BE USED 22 FOR DATA-ECHO PURPOSES. 21 Figure 9. Microwire Connection t t CSW CSH t CS1 D0 (OUT0 OUT0 D0 D3 ...
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... U P The number of MAX458s that can be paralleled is limit capacitive loading on each output, which must not exceed 100pF. Each input presents approximately 7pF of load, and each output presents approximately 12pF. Therefore, the MAX458/MAX459 will drive a maxi- mum of 14 inputs outputs and 2 inputs, or any other combination resulting in less than a 100pF load ...
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... For 100Ω loads, use a 4.7Ω resistor output amplifier is loaded with a pure capacitance or with the inputs of other MAX458/MAX459s, the resis- tors will cause no degradation of gain or other perfor- mance because of the high impedance of the crosspoints. However, resistive loads may cause a reduction in gain ...
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... Video Crosspoint Switches with Buffers ____Pin Configurations (continued) TOP VIEW DIN 1 40 GND 2 39 IN0 3 38 GND 4 37 MAX458 MAX459 IN1 5 36 GND 35 6 IN2 34 7 GND 33 8 IN3 IN4 IN5 13 28 GND 14 27 ...
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Video Crosspoint Switches with Buffers ________________________________________________________Package Information ______________________________________________________________________________________ ...