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19-0402; Rev 0; 6/95
EVAALVUAAILTAIOBNLEKIT
330MHz Buffered Video Switches/
Crosspoint Building Blocks
_______________General Description
The MAX4111/MAX4121/MAX4221 wideband video
switches are optimized for high-definition, broadcast-
quality, composite (HDTV, NTSC, PAL, SECAM, and
RGB) video switching arrays. Their open-loop buffer
amplifiers offer 0.1dB gain flatness to 150MHz. They
operate from ±5V supplies and feature differential
phase and gain error of only 0.01°/0.01%, respectively.
The ultra-low switching glitch (13mV) is positive to
avoid confusion with any sync pulse.
Ideal as building blocks in large arrays, these devices
feature a constant, high input impedance and a disable
function that puts the outputs into a high-impedance
state and reduces the operating current to only 250µA.
The open-loop architecture allows the outputs to drive
capacitive loads without oscillation. Other key features
include -92dB crosstalk and -78dB isolation (MAX4121).
The MAX4111/MAX4121/MAX4221 are offered in nar-
row plastic DIP and SO packages. See the table below
for key features:
____________________________Features
o -3dB Bandwidth of 330MHz
o 0.1dB Gain Flatness of 150MHz
o 700V/µs Slew Rate
o 0.01°/0.01% Differential Phase/Gain
o Low Power: 5.5mA Max
o -92dB Crosstalk and -78dB Off Isolation at 30MHz
o High-Z Outputs when Disabled
o 3pF Input Capacitance
o Ultra-Low Switching Glitch
o On-Board Control Logic
PART
DESCRIPTION
PINS
MAX4111 SPST, single-input, single-output switch
8
______________Ordering Information
MAX4121 SPDT, 2-input, single-output switch
MAX4221 Dual, SPDT, 2-input, single-output switch
8
16
________________________Applications
PART
MAX4111CSA
MAX4121CSA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
8 SO
8 SO
Video-Router and Crosspoint Arrays
MAX4221CSE
0°C to +70°C
16 Narrow SO
Broadcast/HDTV-Quality Color Signal Multiplexing
RF and IF Routing
Graphics Color-Signal Routing
Telecom Routing
Data Acquisition
___________________________________Pin Configurations/Functional Diagrams
TOP VIEW
GND 1
IN 2
GND 3
N.C. 4
MAX4111
SO
8 EN
7 VCC
6 OUT
5 VEE
A0 1
IN0 2
GND 3
IN1 4
MAX4121
SO
8 EN
7 VCC
6 OUT
5 VEE
IN0 1
GND 2
IN1 3
GND 4
GND 5
IN2 6
GND 7
IN3 8
MAX4221
Narrow SO
16 SEL0
15 SEL1
14 VCC
13 OUT0
12 VEE
11 OUT1
10 SEL2
9 SEL3
________________________________________________________________ Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or literature.

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330MHz Buffered Video Switches/
Crosspoint Building Blocks
ABSOLUTE MAXIMUM RATINGS
Supply Voltages
VCC ....................................................................................+6V
VEE ......................................................................................-6V
VCC-VEE ...........................................................................+12V
Analog Input Voltage .......................(VEE - 0.3V) to (VCC + 0.3V)
Digital Input Voltage ...................................-0.3V to (VCC + 0.3V)
Duration of Short Circuit to Ground............................Continuous
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW
Operating Temperature Range...............................0°C to +70°C
Storage Temperature Range .............................-65°C to +160°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10sec) .............................+300°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.
ELECTRICAL CHARACTERISTICS
(VS = ±5V, -2.5V VIN +2.5V, RL = 5k, CL 5pF, TA = 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
DC PARAMETERS
Operating Supply Voltage
Operating Supply Current
Disabled Supply Current
Input Voltage Range
Input Bias Current
Input Resistance
Input Capacitance
Output Offset Voltage
Power-Supply Rejection Ratio
Voltage Gain
Output Resistance
Disabled Output Current
Disabled Output Resistance
Disabled Output Capacitance
Logic Input High Voltage
Logic Input Low Voltage
Logic Input High Current
Logic Input Low Current
SYMBOL
CONDITIONS
VS
ICC, IEE Per channel
TA = +25°C
TA = TMIN to TMAX
MAX4111/MAX4121
ICC, IEE MAX4221
VIN
IB VIN = 0V
Channel selected
Channel disabled
Channel selected
RIN
Channel disabled
CIN VIN = 0V, channel enabled or disabled
VOS
TA = +25°C
TA = TMIN to TMAX
PSRR VS = ±4.5V to ±5.5V
AV VIN = ±2.5V
TA = +25°C
TA = TMIN to TMAX
ROUT f = DC to 50MHz
IOUT(OFF) VOUT = 0V
ROUT(OFF)
COUT(OFF)
VINH VS = ±4.5V to ±5.5V
VINL VS = ±4.5V to ±5.5V
IINH VS = ±4.5V to ±5.5V
IINL VS = ±4.5V to ±5.5V
MIN TYP MAX UNITS
±4.5
±2.5
50
0.98
0.97
2.0
±5.0
4.0
150
250
±2.5
±0.02
0.4
100
3
±5
20
10
30
5
±5.5
5.5
6.5
200
350
±4.0
±10
±15
1.0
1.0
0.8
10
10
V
mA
µA
V
µA
M
pF
mV
dB
V/V
nA
M
pF
V
V
µA
µA
2 _______________________________________________________________________________________

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330MHz Buffered Video Switches/
Crosspoint Building Blocks
ELECTRICAL CHARACTERISTICS
(VS = ±5V, -2.5V VIN +2.5V, RL = 5k, CL 5pF, TA = 0°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
AC PARAMETERS
Slew Rate
Full-Power Bandwidth
(Note 1)
-3dB Bandwidth
Gain Flatness
Gain Peaking
Small-Signal Rise Time
Differential Gain (Note 2)
Differential Phase (Note 2)
All-Hostile Crosstalk
Off Isolation
SYMBOL
CONDITIONS
SR
FPBW
f3dB
VOUT = 5Vp-p
VOUT = 1.4Vp-p
VIN = 1.4Vp-p
VIN = 5Vp-p
VIN = 0.1Vp-p
DC to 30MHz
DC to 150MHz
tr/tf VIN = 0.1Vp-p
DG f = 3.58MHz
DP f = 3.58MHz
VIN = 1Vp-p,
f = 30MHz
MAX4121
MAX4221
VIN = 1Vp-p,
f = 30MHz, see test
circuit
MAX4111
MAX4121
MAX4221
MIN TYP MAX UNITS
700
500
110
45
330
0.02
0.1
0.08
950
0.01
0.01
-92
-70
86
78
84
V/µs
MHz
MHz
dB
dB
ps
%
degrees
dB
dB
dB
Channel Switching Off Time
Channel Switching On Time
Switching Transient
Group Delay
Input-Output Delay Matching
Second Harmonic
Third Harmonic
tOFF
tON
Chip-to-chip, f = 3.58MHz
f = 30MHz, VIN = 1.4Vp-p
f = 30MHz, VIN = 1.4Vp-p
1.0
500
13
860
±0.2
-65
-70
µs
ns
mVp-p
ps
degrees
dBc
dBc
Note 1:
Note 2:
Full-Power Bandwidth is inferred from Slew Rate (SR) testing by the equation SR = ωEP, where EP is the peak output
voltage and ω =2πf.
Differential Gain and Phase are tested using a modulated ramp, 100IRE (0.714V).
_______________________________________________________________________________________ 3

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330MHz Buffered Video Switches/
Crosspoint Building Blocks
__________________________________________Typical Operating Characteristics
(VS = ±5V, RL = 5k, CL 5pF, TA = +25°C, unless otherwise noted.)
2
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
1
GAIN vs. FREQUENCY
10 100
FREQUENCY (MHz)
1000
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
1
GAIN FLATNESS
10 100
FREQUENCY (MHz)
1000
OUTPUT RESISTANCE vs. FREQUENCY
40
30
20
10
0
0.1
1 10 100
FREQUENCY (MHz)
500
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
-10
0
10
20
30
40 VEE
50
60 VCC
70
80
90
10k
100k 1M 10M
FREQUENCY (Hz)
100M
MAX4111
OFF ISOLATION vs. FREQUENCY
-40
-20
0
20
40
60
80
100
120
140
160
1
10 100
FREQUENCY (MHz)
1000
MAX4121 ALL-HOSTILE CROSSTALK
vs. FREQUENCY
40
20
0
-20
-40
-60
-80
-100
-120
-140
-160
1
10 100
FREQUENCY (MHz)
1000
MAX4121
OFF ISOLATION vs. FREQUENCY
-40
-20
0
20
40
60
80
100
120
140
160
1
10 100
FREQUENCY (MHz)
1000
MAX4221 ALL-HOSTILE CROSSTALK
vs. FREQUENCY
60
40
20
0
-20
-40
-60
-80
-100
-120
-140
1
10 100
FREQUENCY (MHz)
1000
-60
-40
-20
0
20
40
60
80
100
120
140
1
MAX4221
OFF ISOLATION vs. FREQUENCY
10 100
FREQUENCY (MHz)
1000
4 _______________________________________________________________________________________

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330MHz Buffered Video Switches/
Crosspoint Building Blocks
____________________________Typical Operating Characteristics (continued)
(VS = ±5V, RL = 5k, CL 5pF, TA = +25°C, unless otherwise noted.)
SMALL-SIGNAL PULSE RESPONSE
(RL = 5k)
IN
GND
LARGE-SIGNAL PULSE RESPONSE
(RL = 5k)
IN
(2.5V/div)
GND
VOLTS
(100mV/div)
OUT
VOLTS
GND
OUT
(1V/div)
GND
TIME (5ns/div)
SMALL-SIGNAL PULSE RESPONSE
(CL = 47pF, RL = open)
IN
GND
VOLTS
(100mV/div)
OUT
GND
TIME (5ns/div)
LARGE-SIGNAL PULSE RESPONSE
(CL = 47pF, RL = open)
IN
2.5V/div
GND
VOLTS
OUT
(1V/div)
GND
TIME (5ns/div)
TIME (10ns/div)
ENABLE/DISABLE DELAY TIME
(INPUT = 1.1V)
OUTPUT GLITCH AMPLITUDE
2V/div
1V/div
ENABLE
OUT
GND
2V/div
A0
10mV/div OUTPUT
TIME (1µs/div)
TIME (1µs/div)
_______________________________________________________________________________________ 5