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MAX458CPLMAXIMN/a12avai8x4 Video Crosspoint Switches with Buffers
MAX458CQHMAXN/a8avai8x4 Video Crosspoint Switches with Buffers
MAX459EPLMAXIMN/a9avai8x4 Video Crosspoint Switches with Buffers


MAX458CPL ,8x4 Video Crosspoint Switches with BuffersFeatures' 100MHz Unity-Gain BandwidthThe MAX458/MAX459 are crosspoint switches with eight' 300V/µs ..
MAX458CQH ,8x4 Video Crosspoint Switches with BuffersBlock Diagram_________________Pin Configurations8 BUFFERED 8 x 4 4 75Ω

MAX458CPL-MAX458CQH-MAX459EPL
8x4 Video Crosspoint Switches with Buffers
_______________General 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-
ed to any of four output amplifiers. The output buffers are
capable of driving loads of 75Ω.
Data interface can be accomplished by either a 16-bit
serial or a 6-bit parallel connection. In the serial mode,
the MAX458/MAX459 are SPITM, QSPITM, and MicrowireTM
compatible. In parallel mode, the MAX458/MAX459 are
compatible with most microprocessor buses. Three-state
amplifier output capability makes it possible to multiplex
MAX458/MAX459s to form larger switch networks. The
output buffers can be disabled individually or the entire
device can be shut down to conserve power.
________________________Applications

Video Test Equipment
Video Security Systems
Video Editing
_____________________Block Diagram
____________________________Features
100MHz Unity-Gain Bandwidth300V/µs Slew RateLow 0.05°Differential Phase ErrorLow 0.01% Differential Gain ErrorDirectly Drives 75ΩCablesFast 60ns Switching TimeHigh-Z Amplifier Output CapabilityShutdown Capability16-Bit Serial and 6-Bit Parallel Address Modes40-Pin DIP and 44-Pin PLCC Packages
______________Ordering Information
_________________Pin Configurations
MAX458/MAX459
8x4 Video Crosspoint Switches with Buffers
_______________________________________________________________Maxim Integrated Products1
Call toll free 1-800-998-8800 for free samples or literature.
SPI and QSPIare trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
MAX458/MAX459
8x4 Video Crosspoint Switches with Buffers
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VCC= +5V, VEE= -5V, -2V ≤VIN≤+2V, output load resistor (RL) = 150Ω, TA= TMINto TMAX, unless otherwise noted.
Typical values are at TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Total Supply Voltage (VCCto VEE).........................................12V
Positive Supply Voltage (VCCto GND).....................................6V
Negative Supply Voltage (VEEto GND)...................................6V
Analog Input/Output Voltage...........(VCC+ 0.3V) to (VEE- 0.3V)
Digital Input Voltage...................................(VCC+ 0.3V) to -0.3V
Duration of Output Short Circuit to GND (Note 1)......Continuous
Continuous Power Dissipation
Plastic DIP (derate 17mW/°C above +70°C)..............1333mW
PLCC (derate 13mW/°C above +70°C)......................1067mW
Operating Temperature Ranges
MAX45_C_ _........................................................0°C to +70°C
MAX45_E_ _......................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
Note 1:
Outputs may be shorted to any supply pin or ground as long as package power dissipation ratings are not exceeded.
Note 2:Defined as the DC offset shift when switching between input channels for a given output.
Note 3:
Voltage Gain Accuracy for MAX458 calculated as (VOUT- VIN) @ (VIN= +2V) - (VOUT- VIN) @ (VIN= -2V)——————————––————————————4—V————————————————————
Note 4:
Voltage Gain Accuracy for MAX459 calculated as (VOUT/2 - VIN) @ (VIN= +1V) - (VOUT/2 - VIN) @ (VIN= -1V)———————————————————————2—V——————————————————————
Note 5:
All logic levels are guaranteed over the range of VS= ±4.75V to ±5.25V.
Note 6:
Differential phase and gain measured with a 40 IRE (285.7mV), 3.58MHz sine wave superimposed on a linear ramp of 0 IRE
to 100 IRE (714.3mV). “The IRE scale is a linear scale for measuring, in arbitrary IRE units, the relative amplitudes of the var-
ious components of a television signal” (from the “Television Engineering Handbook”, edited by K. Blair Benson, McGraw
Hill). This system defines 100 IRE as reference white, 0 IRE as the blanking level, and -40 IRE as the sync peak. The equip-
ment used for the test signal generated 714.3mV (100 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.
Note 8:
Test input channel programmed to an output and grounded through a 75Ωresistor. Adjacent input is programmed to an
adjacent output and driven by a 10MHz, 4Vp-p sine wave.
Note 9:
Same as Note 6 above, except driven input and output are not adjacent to test input/output.
Note 10:
All inputs but the test input are driven by a 10MHz 4Vp-p sine wave. All outputs except the test output are connected to driven inputs.
Note 11:
Same as Note 9 above, except with test channel programmed off.
MAX458/MAX459
8x4 Video Crosspoint Switches with Buffers
_______________________________________________________________________________________3
ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V, VEE= -5V, -2V ≤VIN≤+2V, output load resistor (RL) = 150Ω, TA= TMINto TMAX, unless otherwise noted.
Typical values are at TA= +25°C.)
MAX458/MAX459
8x4 Video Crosspoint Switches with Buffers_______________________________________________________________________________________
TIMING CHARACTERISTICS (Note 12)

(VCC= +5V, VEE= -5V, -2V ≤VIN≤+2V, output load resistor (RL) = 150Ω, TA= TMINto TMAX, unless otherwise noted.)
Note 12:
Timing Characteristics are guaranteed by design.
MAX458/MAX459
8x4 Video Crosspoint Switches with Buffers
_______________________________________________________________________________________5

POWER SUPPLY CURRENT
vs. TEMPERATURE
MAX458/459 Fg TOC1
TEMPERATURE (°C)
CURRENT (mA)
MAX458
GAIN vs. FREQUENCY
MAX458/459 Fg TOC4
FREQUENCY (MHz)
AMPLITUDE (dB)
PHASE (DEGREES)
MAX459
GAIN vs. FREQUENCY
MAX458/459 Fg TOC5
FREQUENCY (MHz)
AMPLITUDE (dB)
PHASE (DEGREES)
OUTPUT IMPEDANCE vs. FREQUENCY
MAX458/459 Fg TOC6
FREQUENCY (MHz)
OUTPUT IMPEDANCE (
+200mV
+200mV
__________________________________________Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)
MAX458/MAX459
8x4 Video Crosspoint Switches with Buffers_______________________________________________________________________________________
______________________________________________________________Pin Description
Note:
All GND pins must be grounded for optimum crosstalk performance.
MAX458/MAX459
8x4 Video Crosspoint Switches with Buffers
_______________________________________________________________________________________7

Figure 1. Block Diagram and Typical Operating Circuit
MAX458/MAX459
8x4 Video Crosspoint Switches with Buffers_______________________________________________________________________________________

Figure 2. Parallel-Logic Block Diagram
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