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Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4


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19-1389; 12/99
Low-Cost 4x4, 8x4, Video Crosspoint Switches
MAX4359/MAX4360/MAX4456 low-cost video crosspoint switches designed reduce component count, board space, design time, system cost. Each contains matrix T-switches that connect their four (MAX4359) eight (MAX4360/MAX4456) video inputs their buffered outputs, combination. Each matrix output buffered internal, high-speed (250V/µs), unity-gain amplifier that capable driving 20pF 2.6Vp-p. applications requiring increased drive capability, buffer MAX4359/ MAX4360/MAX4456 outputs with MAX497 quad, gain-of-two video line driver. MAX4456 digitally controlled switch matrix low-cost pin-for-pin compatible alternative popular MAX456. MAX4359/MAX4360 similar MAX4456, with switch matrix replaced (MAX4359) (MAX4360) switch matrix. Three-state output capability internal, programmable active loads make feasible parallel multiple devices form larger switch arrays. inputs outputs opposite sides, quiet power supply digital input line separates each channel, which reduces crosstalk -70dB 5MHz. applications demanding better specifications, MAX456 video crosspoint switch.
Features
Eight (MAX4456) Four (MAX4359/MAX4360) Internal Buffers 250V/µs Slew Rate Three-State Output Capability Power-Saving Disable Feature 65MHz -3dB Bandwidth Routes Input Channel Output Channel Serial Parallel Digital Interface Expandable Larger Switch Matrices 80dB All-Channel Off-Isolation 5MHz 70dB Single-Channel Crosstalk Straight-Through Pinouts Simplify Layout Low-Cost Pin-Compatible Alternative MAX456 (MAX4456)
MAX4359/MAX4360/MAX4456
Ordering Information
PART MAX4359EAX MAX4359EWG MAX4360EAX MAX4456CPL MAX4456CQH MAX4456EPL MAX4456EQH TEMP. RANGE -40°C +85°C -40°C +85°C -40°C +85°C +70°C +70°C -40°C +85°C -40°C +85°C PIN-PACKAGE SSOP SSOP Plastic PLCC Plastic PLCC
Applications
High-Speed Signal Routing Video-On-Demand Systems
INPUT CHANNELS MAX497 LATCH
Video Test Equipment Video Conferencing Security Systems
Configurations appear data sheet.
Typical Application Circuits
INPUT CHANNELS INPUT CHANNELS) (MAX4360) MAX497 LATCH
MAX4456
T-SWITCH MATRIX D1/SER D0/SER MAX497
OUTPUT SELECT
MAX4359 (MAX4360)
OUTPUT SELECT (8x4) T-SWITCH MATRIX
INPUT SELECT SERIAL
INPUT SELECT SERIAL
D1/SER D0/SER
Maxim Integrated Products
free samples latest literature: http://www.maxim-ic.com, phone 1-800-998-8800. small orders, phone 1-800-835-8769.
Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4456
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage .+12V Positive Supply Voltage (V+) Referred AGND .-0.3V +12V Negative Supply Voltage (V-) Referred AGND .-12V +0.3V DGND AGND .±0.3V Buffer Short Circuit Ground when Exceeding Package Power Dissipation .Indefinite Analog Input Voltage .(V+ 0.3V) 0.3V) Digital Input Voltage .(V+ 0.3V) 0.3V) Input Current, Power Digital Inputs.±20mA Analog Inputs .±50mA Continuous Power Dissipation +70°C) 36-Pin SSOP (derate 11.8mW/°C above +70°C) .941mW 24-Pin (derate 11.8mW/°C above +70°C).941mW 40-Pin Plastic (derate 11.3mW/°C above +70°C).889mW 44-Pin PLCC (derate 13.3mW/°C above +70°C) .1066mW Operating Temperature Ranges MAX4456C .0°C +70°C MAX4_ .-40°C +85°C Junction Temperature .+150°C Storage Temperature Range .-65°C +150°C Lead Temperature (soldering, 10sec) .+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS
+5V, -5V, VLOAD (internal load resistors on), VIN_ VAGND VDGND TMIN TMAX, unless otherwise noted. Typical values +25°C.) PARAMETER Operating Supply Voltage Input Voltage Range Voltage Gain Buffer Offset Voltage Offset Voltage Drift MAX4359/MAX4360 Supply Current, Buffers external load) MAX4456 Supply Current, Buffers Power-Supply Rejection Ratio Analog Input Current Output Leakage Current Internal Amplifier Load Resistor Buffer Output Voltage Swing Digital Input Current Output Impedance Input Logic Threshold Input Logic High Threshold Output Logic Low/High Serial mode, VSER/PAR 0.4mA -0.4mA Internal load resistors off, buffers VLOAD +25°C TMIN TMAX ±1.3 ±4.5V ±5.5V +25°C TMIN TMAX +25°C TMIN TMAX ±0.1 ±100 ±100 CONDITIONS Inferred from PSRR test Inferred from swing test Internal load resistors external load, +25°C TMIN TMAX +25°C TMIN TMAX ±4.5 -1.3 0.99 0.98 ±5.5 1.01 1.02 UNITS µV/°C
Internal load resistors external load
Low-Cost 4x4, 8x4, Video Crosspoint Switches
ELECTRICAL CHARACTERISTICS
+5V, -5V, VLOAD (internal load resistors on), VAGND VDGND +25°C, unless otherwise noted.) PARAMETER DYNAMIC SPECIFICATIONS Output-Buffer Slew Rate Single-Channel Crosstalk All-Hostile Crosstalk All-Channel Off-Isolation -3dB Bandwidth Small-Signal -3dB Bandwidth 0.1dB Bandwidth Differential Phase Error Differential Gain Error Input Noise Input Capacitance Buffer Input Capacitance Output Capacitance Internal load resistors 10pF load 5MHz, 2Vp-p (Note 5MHz, 2Vp-p (Notes 5MHz, 2Vp-p (Note 10pF load, 2Vp-p (Note 10pF load, 100mVp-p (Note 10pF load, 100mVp-p (Note (Note (Note 40MHz buffer inputs grounded Additional capacitance each output buffer connected channel input Output buffer V/µs degrees mVRMS CONDITIONS UNITS
MAX4359/MAX4360/MAX4456
SWITCHING CHARACTERISTICS
(Figure +5V, -5V, VLOAD (internal load resistors on), VIN_ VAGND VDGND TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER Chip-Enable Write Setup Write Pulse Width High Write Pulse Width Data Setup Data Hold Latch Pulse Width Latch Delay Switch Break-Before-Make Delay LATCH Edge Switch LATCH Edge Switch SYMBOL tOFF tOFF LATCH Parallel mode Serial mode CONDITIONS UNITS
Note Dynamic Test Circuits section. Note typical crosstalk improvement when Note Input test signal: 3.58MHz sine wave amplitude 40IRE superimposed linear ramp 100IRE). unit video-signal amplitude developed International Radio Engineers. 140IRE 1.0V. Note Guaranteed design.
Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4456
Description
MAX4359 SSOP MAX4360 SSOP MAX4456 PLCC D0/SER Parallel Data when SER/PAR GND. Serial output cascading multiple parts when SER/PAR VCC. Parallel Data when SER/PAR GND. Serial input when SER/PAR VCC. Output Buffer Address Lines Video Input Lines Asynchronous Control Line. When LOAD VCC, internal active loads When LOAD GND, external loads must used. buffers must have resistive load maintain stability. Digital Ground. DGND pins must have same potential bypassed AGND. DGND should within ±0.3V AGND. When this control line high, 2nd-rank registers loaded with rising edge LATCH. this control line low, 2nd-rank registers transparent when LATCH low, passing data directly from 1st-rank registers decoders. connection. internally connected. Connect serial mode; connect parallel mode. Negative Supply. pins must connected each other bypassed separately (Figure serial mode, (write) shifts data into input register. parallel mode, loads data into 1st-rank registers. Data latched rising edge. EDGE/LEVEL VCC, data loaded from 1strank registers 2nd-rank registers rising edge LATCH. EDGE/LEVEL GND, data loaded while LATCH GND. addition, data loaded during execution parallel-mode functions 1011 through 1110, LATCH during execution parallel-mode "software-latch" command (1111). NAME FUNCTION
LOAD
DGND
EDGE/ LEVEL
12-16, 22-26
22-26
N.C. SER/PAR
LATCH
Low-Cost 4x4, 8x4, Video Crosspoint Switches
Description (continued)
MAX4359 SSOP MAX4360 SSOP MAX4456 PLCC Active-Low Chip Enable. enabled when VCC. disabled when GND. Active-High Chip Enable. enabled when VCC. disabled when GND. Buffer Outputs. Buffer inputs internally grounded with 1000 1001 command from D3-D0 lines. Analog Ground. AGND must 0.0V, since gainsetting resistors buffers connected these pins. Parallel Data when SER/PAR GND. When GND, D0-D2 specify input channel connected specified buffer. When VCC, D0-D2 specify control codes. used serial mode (SER/PAR VCC). Parallel Data when SER/PAR GND. used when SER/PAR VCC. Positive Supply. pins must connected each other bypassed AGND separately (Figure NAME FUNCTION
MAX4359/MAX4360/MAX4456
OUT_
AGND
Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4456
Detailed Description
Output Buffers
MAX4456 video crosspoint switch consists T-switches grid (Figure eight matrix outputs followed eight wideband buffers optimized driving 20pF loads. MAX4359's core switch matrix with each outputs followed wideband buffer. MAX4360 matrix four output buffers. Each buffer internal active load output that readily shut through LOAD input (off when LOAD 0V). shut-off useful when more crosspoints connected parallel create more input channels. With more input channels, only buffers active only loads driven. When active, buffer must have either internal load, internal load another buffer another MAX4359/MAX4360/MAX4456, external load. Each output disabled under logic control. When buffer disabled, output enters high-impedance state. multichip parallel applications, disable function prevents inactive outputs from loading lines driven other devices. Disabling inactive buffers reduces power consumption. outputs connect easily MAX497 quad, gain-oftwo buffers when back-terminated coaxial cable must driven.
OUTPUT BUFFERS OUT0
MAX4456 SWITCH MATRIX
LOAD
OUT7
2nd-RANK REGISTERS
LATCH EDGE/LEVEL
SER/PAR
1st-RANK REGISTERS D0/SER D1/SER
AGND DGND
Figure MAX4456 Functional Diagram
Low-Cost 4x4, 8x4, Video Crosspoint Switches
Power-On RESET
MAX4359/MAX4360/MAX4456 have internal power-on reset (POR) circuit that remains after power applied. also remains total supply voltage less than disables buffer outputs power-up, switch matrix preset initial condition. desired switch state should programmed before buffer outputs enabled. through 0111 (D3-D0) MAX4360, codes 0000 through 0011 (D3-D0) MAX4359. Note that MAX4359 does codes 0100 through 0111. eight codes 1000 through 1111 control other functions, listed Table
MAX4359/MAX4360/MAX4456
7-Bit Parallel-Interface Mode (MAX4456)
MAX4456's parallel-interface mode (SER/PAR GND), seven data bits specify output channel (A2, input channel which connects (D3-D0). This data loaded rising edge input channels selected codes 0000 through 0111 (D3-D0) MAX4456. remaining eight codes 1000 through 1111 control other functions, listed Table
Digital Interface
desired switch state loaded parallelinterface mode serial-interface mode (Table Figures action associated with line occurs rising edge. same true LATCH line EDGE/LEVEL high. Otherwise, second-rank registers update while LATCH (when EDGE/LEVEL low). logically ANDed with (when present) allow active-high activelow chip enable.
16-Bit Serial-Interface Mode (MAX4359/MAX4360)
serial mode (SER/PAR VCC), first-rank registers loaded with data, making unnecessary specify output address (A1, A0). input data format D3-D0, starting with OUT0 ending with OUT3 total bits. MAX4360, only codes 0000 through 1010 valid. MAX4359, only codes 0000 through 0011 codes 1000 through 1010 valid. Code 1010 disables buffer, while code 1001 enables After data shifted into 16bit first-rank register, transferred second rank LATCH (Table which updates switches.
6-Bit Parallel-Interface Mode (MAX4359/MAX4360)
MAX4359/MAX4360's parallel-interface mode (SER/PAR GND), data bits specify output channel (A1, input channel which connects (D3-D0). This data loaded rising edge input channels selected codes 0000
Table Parallel-Interface Mode Functions
D3-D0 0000 0111 1000 1011 1100 Selects Output Buffer 1101 1110 FUNCTION Connect buffer selected A2-A0 (MAX4456) A1-A0 (MAX4359/MAX4360) input channel selected D3-D0. Connect buffer selected A2-A0 (MAX4456) A1-A0 (MAX4359/MAX4360) DGND. Note, buffer output output offset voltage. Shut buffer selected A2-A0 (MAX4456) A1-A0 (MAX4359/MAX4360) retain 2nd-rank registers contents. Turn buffer selected A2-A0 (MAX4456) A1-A0 (MAX4359/MAX4360, restore previously connected channel. Turn buffers, leave 2nd-rank registers unchanged. Turn buffers, restore connected channels. Send pulse 2nd-rank registers load them with contents 1st-rank registers. When latch held high, this "software-LATCH" command performs same function pulsing LATCH low. these codes parallel-interface mode. These codes serialinterface mode only. MAX4359, unused codes.
1111
1001 1010 0100 0111
Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4456
Table Serial-Interface Mode Functions
D3-D0 FUNCTION Connect selected buffer input channel selected D3-D0. Note that 0100 through 0111 valid MAX4359. Connect input selected buffer GND. Note: buffer output remains input offset voltage. Turn selected buffer connect input GND. this code turn buffers after power applied. default power-up state buffers disabled. Shut selected buffer specified channel, erase data stored rank registers. rank holds command word 1010. these codes serial-interface mode. They inhibit latching 2nd-rank registers, which prevents proper data loading.
32-Bit Serial-Interface Mode (MAX4456)
serial mode (SER/PAR VCC), first-rank registers loaded with data, making unnecessary specify output address (A2, A0). input data format D3-D0, starting with OUT0 ending with OUT7 total bits. Only codes 0000 through 1010 valid. Code 1010 disables buffer, while code 1001 enables After data shifted into 32-bit first-rank register, transferred second rank LATCH (Table which updates switches.
0000 0111
1000
1001
1010
1011 1111
Table Input/Output Line Configurations
SERIAL PARALLEL Serial Output Parallel Input Parallel Input (A2), Output Buffer Address Output Buffer Address Serial Mode COMMENT
Serial Input
Parallel Input Parallel Input
Parallel Input Parallel Input
Parallel Mode, D0-D2 Control Code Parallel Mode, D0-D2 Input Address
Don't care, MAX4456 only.
Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4456
MAX497
OUT0 9,15 OUT0 OUT1 OUT2 OUT3 11,13
INPUT VIDEO CHANNELS
DB-25
OUT1 OUT2 OUT3 OUT4 MAX4456 OUT5 OUT6 OUT7 EDGE/LEVEL LOAD LATCH AGND DGND VVCE SER/PAR
D0/SER D1/SER
NOTE: BYPASS CAPACITORS 0.1µF CERAMIC.
Figure MAX4456 (plastic DIP) Typical Application Circuit
Typical Application
Figure shows typical application MAX4456 (PDIP) with MAX497 quad, gain-of-two buffers outputs drive loads. This application shows MAX4456 digital-switch control interface 7bit parallel mode. MAX4456 uses seven data lines control lines LATCH). additional lines needed control LOAD when using multiple MAX4456s. input/output information presented chip D3-D0 parallel printer port. data stored 1st-rank registers rising edge When LATCH line goes high, switch configuration loaded into 2nd-rank registers, eight outputs enter configuration same time. Each 7-bit word updates only output buffer time. several buffers updated, data individually loaded into 1st-rank registers. Then, single LATCH pulse used reconfigure channels simultaneously.
short BASIC program Figure loads programming data into MAX4456 from compatible. uses computer's "LPT1" output interface circuit, then automatically finds address LPT1 displays table valid input values used. program does keep track previous commands, does display last data sent LPT1, which written latched with each transmission. similar application possible with MAX4359/MAX4360.
Chip Information
MAX4359 TRANSISTOR COUNT: 2372 MAX4360 TRANSISTOR COUNT: 2372 MAX4456 TRANSISTOR COUNT: 3820
Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4456
Figure BASIC Program Loading Data into MAX4456 from Using Figure Circuit
Timing Diagrams
A0-A2 VALID DATA D0-D3 VALID DATA
LATCH
Figure Write Timing Serial- Parallel-Interface Modes
Low-Cost 4x4, 8x4, Video Crosspoint Switches
Timing Diagrams (continued)
NOTE: FIGURE LATCH TIMING. DATA DATA DATA
MAX4359/MAX4360/MAX4456
LATCH
1st-RANK REGISTER DATA 2nd-RANK REGISTER DATA (EDGE/LEVEL GND) 2nd-RANK REGISTER DATA (EDGE/LEVEL VCC)
DATA
DATA
DATA
DATA
DATA
DATA
DATA
Figure Parallel-Interface Mode Format (SER/PAR GND)
NOTES: TABLE INPUT DATA. FIGURE LATCH TIMING. INPUT DATA OUT0 INPUT DATA OUT1 OUT6 INPUT DATA OUT7
LATCH
2nd-RANK REGISTER DATA (EDGE/LEVEL GND) 2nd-RANK REGISTER DATA (EDGE/LEVEL VCC)
DATA VALID
DATA VALID
Figure Serial-Mode Interface Format (SER/PAR VCC)
Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4456
Dynamic Test Circuits
OUT0 OUT1 OUT2 VOUT
OUT0 OUT1 OUT2
VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT
MAX4456 OUT3 OUT4 OUT5 OUT6 OUT7 LOAD 2Vp-p, SWEEP FREQUENCY
MAX4456 OUT3 OUT4 OUT5 OUT6 OUT7 LOAD 2Vp-p 5MHz
-3dB BANDWIDTH (NOTES 1-4)
ALL-CHANNEL OFF-ISOLATION (NOTES 5-8)
OUT0 OUT1 OUT2
VOUT VOUT VOUT VOUT VOUT VOUT VOUT
OUT0 OUT1 OUT2
VOUT
MAX4456 OUT3 OUT4 OUT5 OUT6 OUT7 LOAD 2Vp-p 5MHz
MAX4456 OUT3 OUT4 OUT5 OUT6 OUT7 LOAD 2Vp-p 5MHz
SINGLE-CHANNEL CROSSTALK (NOTES 9-11)
ALL-HOSTILE CROSSTALK (NOTES
Connect LOAD (internal loads outputs). Program input connect output. Table programming codes. Turn buffer selected output (Table Drive selected input with VIN, measure VOUT -3dB frequency selected output. Program each numbered input connect same numbered output (IN0 OUT0, OUT1, etc., MAX4456; also OUT0, OUT1, etc., MAX4360.) Table programming codes. Note Turn output buffers (Table Note Drive inputs with VIN, measure VOUT output. Note Isolation 20log10 (VOUT/VIN). Note Turn output buffers (Table Note Drive input with VIN, measure VOUT undriven output. Note Crosstalk 20log10 (VOUT/VIN). Note Drive input with VIN, measure VOUT undriven output. Note Note Note Note Note
Low-Cost 4x4, 8x4, Video Crosspoint Switches
Configurations
VIEW
D1/SER D0/SER LOAD DGND EDGE/LEVEL N.C. N.C. OUT0 OUT1
MAX4359/MAX4360/MAX4456
D1/SER D0/SER LOAD DGND EDGE/LEVEL SER/PAR
OUT0 OUT1
D1/SER D0/SER LOAD DGND EDGE/LEVEL AGND SER/PAR
OUT0 OUT1
MAX4359
OUT2 AGND OUT3 LATCH
MAX4359
OUT2 AGND OUT3 N.C. N.C. N.C. N.C. N.C. LATCH
MAX4360
OUT2 AGND OUT3 N.C. N.C. N.C. N.C. N.C. LATCH
N.C. N.C.
D1/SER D0/SER LOAD DGND DGND EDGE/LEVEL SER/PAR
OUT0
N.C. SER/PAR N.C.
MAX4456
OUT1 OUT2
SSOP
D1/SER D0/SER
SSOP
OUT0
OUT1
N.C.
OUT3 AGND OUT4 AGND OUT5 AGND OUT6 OUT7 LATCH LOAD
OUT2 VOUT3 AGND OUT4 N.C. AGND OUT5 AGND OUT6
DGND N.C. DGND EDGE/LEVEL
MAX4456
LATCH
SER/PAR
PLCC
OUT7
N.C.
Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4456
Package Information
SSOP.EPS
Low-Cost 4x4, 8x4, Video Crosspoint Switches
Package Information (continued)
SOICW.EPS
MAX4359/MAX4360/MAX4456
Low-Cost 4x4, 8x4, Video Crosspoint Switches MAX4359/MAX4360/MAX4456
Package Information (continued)
PLCC.EPS
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 1999 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.
PDIPW.EPS

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