_______________General Description
The MAX463MAX470 series of two-channel,
triple/quad buffered video switches and video buffers
combines high-accuracy, unity-gain-stable amplifiers
with high-performance video switches. Fast switching
time and low differential gain and phase error make this
series of switches and buffers ideal for all video appli-
cations. The devices are all specified for 5V supply
operation with inputs and outputs as high as 2.5V
when driving 150
loads (75
back-terminated cable).
Input capacitance is typically only 5pF, and channel-to-
channel crosstalk is better than 60dB, accomplished by
surrounding all inputs with AC ground pins. The on-
board amplifiers feature a 200V/s slew rate (300V/s
for A
V
= 2V/V amplifiers), and a bandwidth of 100MHz
(90MHz for A
V
= 2V/V buffers). Channel selection is
controlled by a single TTL-compatible input pin or by a
microprocessor interface, and channel switch time is
only 20ns.
For design flexibility, devices are offered with buffer-
amplifier gains of 1V/V or 2V/V for 75
back-terminated
applications. Output amplifiers have a guaranteed out-
put swing of 2V into 75
.
Devices offered in this series are as follows:
________________________Applications
Broadcast-Quality Color-Signal Multiplexing
RGB Multiplexing
RGB Color Video Overlay Editors
RGB Color Video Security Systems
RGB Medical Imaging
Coaxial-Cable Line Drivers
____________________________Features
o
100MHz Unity-Gain Bandwidth
o
90MHz Bandwidth with 2V/V Gain
o
0.01%/0.03 Differential Gain/Phase Error
o
Drives 50
and 75
Back-Terminated Cable Directly
o
Wide Output Swing:
2V into 75
2.5V into 150
o
300V/s Slew Rate (2V/V gain)
o
20ns Channel Switching Time
o
Logic Disable Mode:
High-Z Outputs
Reduced Power Consumption
o
Outputs May Be Paralleled for Larger Networks
o
5pF Input Capacitance (channel on or off)
______________Ordering Information
Ordering Information continued on last page.
* Dice are specified at T
A
= +25C, DC parameters only.
MAX463MAX470
Two-Channel, Triple/Quad
RGB Video Switches and Buffers
________________________________________________________________
Maxim Integrated Products
1
TOP VIEW
Pin Configurations continued at end of data sheet.
IN0A
GND
IN1A
GND
IN2A
V-
V-
IN0B
GND
IN1B
GND
IN2B
DIP/SO
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
GND
LE
EN
A0
CS
V-
OUT0
V+
OUT1
GND
V+
OUT2
MAX463
MAX465
3P2T SWITCH
_________________Pin Configurations
Call toll free 1-800-998-8800 for free samples or literature.
PART
TEMP. RANGE
PIN-PACKAGE
MAX463
CNG
0C to +70C
24 Narrow Plastic DIP
MAX463CWG
0C to +70C
24 Wide SO
MAX463C/D
0C to +70C
Dice*
PART
DESCRIPTION
VOLTAGE GAIN
(V/V)
MAX463
Triple RGB Switch & Buffer
1
MAX464
Quad RGB Switch & Buffer
1
MAX465
Triple RGB Switch & Buffer
2
MAX466
Quad RGB Switch & Buffer
2
MAX467
Triple Video Buffer
1
MAX468
Quad Video Buffer
1
MAX469
Triple Video Buffer
2
MAX470
Quad Video Buffer
2
MAX463ENG
24 Narrow Plastic DIP
MAX463EWG
-40C to +85C
24 Wide SO
-40C to +85C
19-0219; Rev 2; 6/94
Typical Operating Circuit appears at end of data sheet.
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
MAX463MAX470
Two-Channel, Triple/Quad
RGB Video Switches and Buffers
2
_______________________________________________________________________________________
Power-Supply Ranges
V+ to V- ................................................................................12V
Analog Input Voltage ..........................(V- - 0.3V) to (V+ + 0.3V)
Digital Input Voltage ...................................-0.3V to (V+ + 0.3V)
Output Short-Circuit Duration (to GND)........................1 Minute
Input Current into Any Pin, Power On or Off...................50mA
Continuous Power Dissipation (T
A
= +70C)
16-Pin Plastic DIP (derate 22.22mW/C above +70C) ....1778mW
16-Pin Wide SO (derate 20.00mW/C above +70C) .......1600mW
24-Pin Narrow Plastic DIP
(derate 20.2mW/C above +70C)..................................1620mW
24-Pin Wide SO (derate 19.3mW/C above +70C) .........1590mW
28-Pin Narrow Plastic DIP
(derate 20.2mW/C above +70C)..................................1620mW
28-Pin Wide SO (derate 18.1mW/C above +70C) .........1440mW
Operating Temperature Ranges
MAX4_ _C_ _.........................................................0C to +70C
MAX4_ _E_ _ ......................................................-40C to +85C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10sec) .............................+300C
ELECTRICAL CHARACTERISTICS
(V+ = 5V, V- = -5V, -2V
V
IN
+2V, R
LOAD
= 75
, unless otherwise noted.)
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.
PARAMETER
SYMBOL
UNITS
Voltage-Gain Accuracy
0.2
0.5
%
Input Capacitance
C
IN
5
pF
On Input Resistance
R
IN
300
700
k
On Input Bias Current
I
BIAS
1
3
A
0.3
1.0
Output Voltage Swing
V
OUT
2.5 2.8
V
2.0 2.4
Output Impedance
R
OUT
5
Input Voltage Range
Operating Supply Voltage
V
S
4.75 5
5.25
V
V
IN
-2
2
V
Power-Supply Rejection Ratio
PSRR
50
60
dB
0.05
0.1
R
OUTD
150
250
k
0.7
1
k
C
OUTD
10
pF
Positive Supply Current
I+
65
80
mA
85
100
35
45
40
50
CONDITIONS
Channel off or on
R
LOAD
= 150
MAX463/MAX464
MAX465/MAX466
R
LOAD
= 75
f
IN
= DC
MAX463MAX466
MAX463/MAX465, disabled mode
MAX464/MAX466, disabled mode
ABSOLUTE MAXIMUM RATINGS
T
A
= T
MIN
to T
MAX
MIN
MAX
1.0
150
5
2.0
2.5
100
-1.5/+2
0.7
100
120
4.75
5.25
50
-2
2
55
50
Output Resistance,
Disabled Mode
Output Capacitance,
Disabled Mode
Offset Voltage
V
OS
3
10
mV
15
MAX463/MAX464, MAX467/MAX468
(Note 1)
MAX465/MAX466, MAX469/MAX470,
R
LOAD
= 150
, (Note 2)
f
IN
= 10MHz
MAX463/MAX465/MAX467/MAX469,
V
IN
= 0V
MAX464/MAX466/MAX468/MAX470,
V
IN
= 0V
T
A
= +25C
MIN
TYP
MAX
MAX463/MAX464,
MAX467/MAX468
MAX465/MAX466,
MAX469/MAX470
MAX463MAX470
Two-Channel, Triple/Quad
RGB Video Switches and Buffers
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, V- = -5V, -2V
V
IN
+2V, R
LOAD
= 75
, unless otherwise noted.)
PARAMETER
Differential Phase Error
(Note 3)
SYMBOL
0.03
UNITS
deg.
300
DP
V/s
Slew Rate
0.14
SR
200
Input Noise Density
en
20
nV/
H
--
z
25
35
Settling Time to 0.1%
-3dB Bandwidth
BW
100
MHz
90
t
S
50
ns
XTALK
0.01
60
%
Differential Gain Error
(Note 3)
dB
DG
0.12
All-Hostile Crosstalk (Note 5)
XTALK
50
dB
ISO
Negative Supply Current
70
I-
50
65
dB
mA
t
PD
15
ns
65
80
t
SW
20
ns
Switching Transient
300
mV
P-P
20
30
t
OFF
80
ns
Logic Input High Threshold
V
IH
2
V
Logic Input Low Threshold
V
IL
0.8
V
CONDITIONS
MAX463/MAX464, MAX467/MAX468
MAX465/MAX466, MAX469/MAX470
MAX465/MAX466, MAX469/MAX470
MAX463/MAX464, MAX467/MAX468
f
IN
= 10kHz
MAX464/MAX466, disabled mode
MAX463/MAX464, MAX467/MAX468
MAX465/MAX466, MAX469/MAX470
V
IN
= 2V-to-0V step
f
IN
= 10MHz
MAX463/MAX464, MAX467/MAX468
MAX465/MAX466, MAX469/MAX470
f
IN
= 10MHz
f
IN
= 10MHz, MAX463MAX466
MAX463MAX466
MAX463MAX466
V
INA
= V
INB
= 0V, MAX463MAX466
MAX463/MAX465, disabled mode
MAX463MAX466
E
--
N
, A0, C
--
S
, LE; MAX463MAX466
E
--
N
, A0, C
--
S
, LE; MAX463MAX466
T
A
= T
MIN
to T
MAX
MIN
MAX
40
75
95
35
2
0.8
MAX463/MAX465/MAX467/MAX469,
V
IN
= 0V
MAX464/MAX466/MAX468/MAX470,
V
IN
= 0V
Adjacent Channel Crosstalk
(Note 4)
All-Hostile Off Isolation (Note 6)
Channel Switching
Propagation Delay (Note 7)
Logic Input Current High
I
INHI
200
A
E
--
N
, A0, C
--
S
, LE; MAX463MAX466
200
Logic Input Current Low
I
INLO
200
A
E
--
N
, A0, C
--
S
, LE; MAX463MAX466
200
Channel Switching Time
(Note 8)
Amplifier Switching Off-Time
(Note 9)
Amplifier Switching On-Time
(Note 10)
t
ON
100
ns
MAX463MAX466
T
A
= +25C
MIN
TYP
MAX
10k
100k
MAX468
GAIN AND PHASE RESPONSES
0
MAX463/470 -01
FREQUENCY (Hz)
GAIN (dB)
1M
100M
3
2
1
1
2
180
108
36
144
72
0
PHASE (DEGREES)
10M
GAIN
PHASE
1G
100k
MAX464
OUTPUT IMPEDANCE
vs. FREQUENCY
1
MAX463/470 -02
FREQUENCY (Hz)
OUTPUT IMPEDANCE ( )
1M
100M
0.01
0.1
10
100
10M
10k
1k
100k
MAX468
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
40
MAX463/470 -03
FREQUENCY (Hz)
PSRR (dB)
1M
100M
10
20
30
50
60
10M
10k
V+
V
MAX463MAX470
Two-Channel, Triple/Quad
RGB Video Switches and Buffers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, V- = -5V, -2V
V
IN
+2V, R
LOAD
= 75
, unless otherwise noted.)
PARAMETER
SYMBOL
UNITS
Address Setup Time (Note 11)
t
SU
CONDITIONS
T
A
= T
MIN
to T
MAX
MIN
MAX
30
ns
E
--
N
, A0, C
--
S
, LE; MAX463MAX466
30
Address Hold Time (Note 11)
t
H
0
ns
E
--
N
, A0, C
--
S
, LE; MAX463MAX466
0
C
--
S
Pulse Width Low (Note 11)
t
CS
15
ns
E
--
N
, A0, C
--
S
, LE; MAX463MAX466
15
Note 1:
Voltage gain accuracy for the unity-gain devices is defined as [(V
OUT
- V
IN
) at V
IN
= 1V - (V
OUT
- V
IN
) at V
IN
= -1V]/2.
Note 2:
Voltage gain accuracy for the gain-of-two devices is defined as [(V
OUT
/2 - V
IN
) at V
IN
= 1V - (V
OUT
/2 - V
IN
) at V
IN
= -1V]/2.
Note 3:
Tested with a 3.58MHz sine wave of amplitude 40IRE superimposed on a linear ramp (0IRE to 100IRE), R
L
= 150
to ground.
Note 4:
Tested with the selected input connected to ground through a 75
resistor, and a 4V
P-P
sine wave at 10MHz driving adjacent input.
Note 5:
Tested in the same manner as described in Note 4, but with all other inputs driven.
Note 6:
Tested with LE = 0V, E
--
N
= V+, and all inputs driven with a 4V
P-P
, 10MHz sine wave.
Note 7:
Measured from a channel switch command to measurable activity at the output.
Note 8:
Measured from where the output begins to move to the point where it is well defined.
Note 9:
Measured from a disable command to amplifier in a non-driving state.
Note 10:
Measured from an enable command to the point where the output reaches 90% current out.
Note 11:
Guaranteed by design.
T
A
= +25C
MIN
TYP
MAX
__________________________________________Typical Operating Characteristics
(T
A
= +25C, unless otherwise noted.)
MAX463MAX470
Two-Channel, Triple/Quad
RGB Video Switches and Buffers
_______________________________________________________________________________________
5
100
VOLTAGE GAIN ACCURACY
vs. TEMPERATURE
MAX463/470 -04
TEMPERATURE (C)
PERCENTAGE (%)
25
0
50
25
75
50
0.06
0.08
0.10
0.12
0.14
0.16
MAX465
MAX463
100
MAX463
DISABLED OUTPUT RESISTANCE
vs. TEMPERATURE
MAX463/470 -05
TEMPERATURE (C)
OUTPUT RESISTANCE (k
)
25
0
50
25
75
50
200
250
300
350
400
100
MAX465
DISABLED OUTPUT RESISTANCE
vs. TEMPERATURE
MAX463/470 -06
TEMPERATURE (C)
OUTPUT RESISTANCE (k
)
25
0
50
25
75
50
1.10
1.15
1.20
1.25
1.30
10
100
SUPPLY CURRENT PER AMPLIFIER
vs. TEMPERATURE
MAX463/470 -09
TEMPERATURE (C)
SUPPLY CURRENT PER AMPLIFIER (mA)
20
15
25
0
50
25
25
75
50
0
30
5
I+
I
10
100
DISABLED SUPPLY CURRENT
vs. TEMPERATURE
MAX463/470 -07
TEMPERATURE (C)
SUPPLY CURRENT (mA)
20
15
25
0
50
25
25
75
50
35
30
40
I+
I
4
4
10
100
OUTPUT VOLTAGE SWING
vs. LOAD RESISTANCE
0
MAX463/470 -08
LOAD RESISTANCE ( )
OUTPUT VOLTAGE (V)
1000
10000
3
2
1
1
2
3
MAX463/4/7/8:V
IN
= 4V
MAX465/6/9/70:V
IN
= 2V
____________________________Typical Operating Characteristics (continued)
(T
A
= +25C, unless otherwise noted.)
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