MAX4887ETE+ [MAXIM]
Audio/Video Switch, 1 Func, 1 Channel, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, EXPOSED PAD, MO-220WEED-2, TQFN-16;
| 型号： | MAX4887ETE+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Audio/Video Switch, 1 Func, 1 Channel, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, EXPOSED PAD, MO-220WEED-2, TQFN-16 开关 |
| 文件： | 总12页 (文件大小：316K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-3972; Rev 0; 2/06
Triple Video Switch
General Description
Features
The MAX4887 triple, high-frequency switch is intended
for notebooks and monitors to permit RGB signals to be
switched from one driver to one of two loads (1:2) or one
of two sources to be connected to one load (2:1). The
MAX4887 high-performance switch utilizes n-channel
architecture with internal high-drive pullup from a low-
noise charge pump, resulting in very low on-capacitance.
♦ +3V/+5V Single-Supply Operation
♦ Low R
ON
5
(V+ = 5V)
♦ Low 10pF (typ) C
ON
♦ Global ENABLE Input to Turn On/Off Switches
♦ Break-Before-Make Switching
The MAX4887 features 5 (typ) on-resistance switches
with 10pF on-capacitances for routing RGB video sig-
nals. A logic input enables or disables the internal
charge pump for optimal frequency performances when
operating at lower input voltages resulting in standby
supply current less than 3µA. All RGB inputs/outputs are
ESD protected to 8kꢀ ꢁuman Body Model (ꢁBM) and
feature a global input (EN) that places all inputs and out-
puts in a high-impedance state.
♦ ±±kV ꢀBM ESꢁ ꢂrotection per IEC1000-ꢃ-ꢄ on I/Os
♦ Less than 1mA Supply Current (Charge ꢂump
Enabled)
♦ Less than 3µA Standby Mode
♦ Charge-ꢂump Noise Lower than 163µV
ꢂ-ꢂ
♦ Flowthrough Layout for Easy Board Layout
The MAX4887 is available in a small 3mm x 3mm, 16-
pin TQFN package for ease of assembly and
flowthrough layout, resulting in minimum space require-
ment and simplicity in board layout. The MAX4887
operates over the -40°C to +85°C temperature range.
♦ Space-Saving Lead-Free (3mm x 3mm) 16-ꢂin
TQFN ꢂackage
Applications
Ordering Information
Notebook Computers
Servers and Routers
Docking Stations
TEMꢂ
RANGE ꢂACKAGE
ꢂIN-
TOꢂ
MARK
ꢂKG
COꢁE
ꢂART
-40°C to 16 TQFN-EP*
+85°C
MAX4887ETE
AEF
T1633-4
3mm x 3mm
PC/ꢁDTꢀ Monitors
*EP = Exposed paddle.
The MAX4887 is available only in a lead-free package. Specify
lead-free by adding the + symbol at the end of the part num-
ber when ordering.
Typical Operating Circuit
+3.3V
+5V
75
75
75
0.1 F
V+
V
CC
R0
VGA
D/A
CONVERTER
R1
G1
B1
VGA
CONNECTOR 1
G0
B0
MAX4887
R2
G2
B2
VGA
CONNECTOR 2
DOCKING
STATION
FROM CONTROL
SIGNALS
SEL
EN
QP
GND
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Triple Video Switch
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.)
Continuous Power Dissipation (T = +70°C)
A
ꢀ+.............................................................................-0.3ꢀ to +6ꢀ
R_, G_, B_, SEL, QP, EN (Note 1) ................-0.3ꢀ to (ꢀ+ + 0.3ꢀ)
Continuous Current through Any Switch ........................ 120mA
Peak Current through Any Switch
16-Pin Thin QFN-EP (derate 15.6mW/°C above
+70°C).........................................................................1250mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
(pulsed at 1ms, 10% duty cycle)................................. 240mA
Note 1: Signals exceeding ꢀ+ or GND are clamped by internal diodes. Limit forward-diode current to maximum current rating.
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.
ꢁC ELECTRICAL CꢀARACTERISTICS—5V SUꢂꢂLY
(ꢀ+ = 5ꢀ, QP = GND, T = T
to T
. Typical values are at T = +25°C, unless otherwise noted.) (Note 2)
MAX A
A
MIN
ꢂARAMETER
SYMBOL
CONꢁITIONS
MIN
TYꢂ
MAX
5.5
1
UNITS
ꢀ
Power-Supply ꢀoltage Range
Quiescent Supply Current
RGB SWITCꢀES
4.5
QP = GND
0.5
1
mA
µA
I
ꢀ+ = +5.5ꢀ
+
QP = ꢀ+
3
QP = GND
QP = ꢀ+
5
6.5
7.5
1.3
1.5
1
ꢀ
= +1.5ꢀ,
= -25mA
IN
On-Resistance
R
ON
I
IN
6
QP = GND
QP = ꢀ+
0.5
0.7
0.5
0.7
0.3ꢀ < ꢀ < +2ꢀ,
IN
On-Resistance Matching
On-Resistance Flatness
R
ON
I
= -25mA (Note 3)
IN
QP = GND
QP = ꢀ+
0 < ꢀ < +2ꢀ,
IN
I
= -25mA
IN
1.8
R
FLAT(ON)
0 < ꢀ < +1.5ꢀ, I
IN
-25mA
=
IN
QP =ꢀ+
0.7
1.55
+1
On-Leakage Current
I
R_, G_, B_ = 0.7ꢀ, 4.8ꢀ; EN = GND
R_, G_, B_ = 0.7ꢀ, 4.8ꢀ; EN = GND
-1
µA
pA
L(ON)
Off-Leakage Current
I
300
L(OFF)
LOGIC INꢂUTS (SEL, EN, QP)
ꢀ+ = 4.5ꢀ
ꢀ+ = 5.5ꢀ
ꢀ+ = 4.5ꢀ
ꢀ+ = 5.5ꢀ
0.8
0.8
Input Low ꢀoltage
Input ꢁigh ꢀoltage
ꢀ
ꢀ
IL
2.0
2.0
-1
ꢀ
ꢀ
Iꢁ
Input Leakage Current
I
+1
µA
LEAK
ESꢁ ꢂROTECTION
ꢁuman Body Model, R_, G_, B_
8
2
ESD Protection
kꢀ
ꢁuman Body Model, SEL, EN, QP
ꢄ
_______________________________________________________________________________________
Triple Video Switch
AC ELECTRICAL CꢀARACTERISTICS—5V SUꢂꢂLY
(ꢀ+ = +5ꢀ, QP = GND, T = T
to T
. Typical values are at T = +25°C, unless otherwise noted.) (Note 2)
A
MIN
MAX
A
ꢂARAMETER
Charge-Pump Noise
Turn-On Time
SYMBOL
CONꢁITIONS
MIN
TYꢂ
MAX
UNITS
µꢀ
ꢀ
R = R = 50
163
QP
ON
S
L
P-P
t
ꢀ
ꢀ
= +4.5ꢀ, R = 100 , Figure 2
20
µs
IN
L
Charge Injection
= 0ꢀ, R
= 0 , C = 1.0nF, Figure 3
28
pC
ps
GEN
GEN
L
Propagation Delay
t
/t
C = 10pF, R = R = 50 , Figure 4 (Note 3)
400
350
PLꢁ PꢁL
L
S
L
Skew between any two ports: R, G, B;
Figure 4 (Note 3)
Output Skew Between Ports
3dB Bandwidth
t
ps
Mꢁz
dB
SKEW
f
R = R = 50 , Figure 6
500
-58
MAX
S
L
R = R = 50 , ꢀ _ = 1ꢀ f = 50Mꢁz,
P-P,
S
L
IN
Off-Isolation
Figure 5
1Mꢁz < f < 50Mꢁz,
R = R = 50
QP = GND
QP = ꢀ+
0.5
0.5
Insertion Loss
Crosstalk
I
dB
dB
LOS
S
L
f < 50Mꢁz, ꢀ = 1ꢀ , R = R = 50 ,
IN
P-P
S
L
ꢀ
-40
CT
Figure 5
Off-Capacitance
On-Capacitance
C
f = 1Mꢁz, (R,G,B) to (R,G,B)
0
6
pF
pF
OFF
1,2
C
f = 1Mꢁz
10
ON
ELECTRICAL CꢀARACTERISTICS—3.3V SUꢂꢂLY
(ꢀ+ = +3.3ꢀ, QP = GND, T = T
to T
. Typical values are at T = +25°C, unless otherwise noted.) (Note 2)
MAX A
A
MIN
ꢂARAMETER
Power-Supply ꢀoltage Range
Quiescent Supply Current
RGB SWITCꢀES
SYMBOL
CONꢁITIONS
MIN
TYꢂ
MAX
3.6
1
UNITS
ꢀ
3.0
I
ꢀ+ = +3.6ꢀ
0.5
mA
+
On-Resistance
R
ON
ꢀ = +3ꢀ, ꢀ = +1.5ꢀ, I = -25mA
6
7
IN
IN
On-Resistance Matching
On-Resistance Flatness
On-Leakage Current
R
0 < ꢀ < +2ꢀ, I = -25mA (Note 3)
0.8
0.9
1.2
1.4
+1
ON
FLAT(ON)
IN
IN
R
0< ꢀ < +2ꢀ, I = -25mA
IN IN
I
R_, G_, B_ = 0ꢀ or +3.6ꢀ, EN = GND
R_, G_, B_ = 0ꢀ or +3.6ꢀ, EN = ꢀ+
-1
µA
pA
L(ON)
Off-Leakage Current
I
200
L(OFF)
LOGIC INꢂUTS (SEL, EN, QP)
ꢀ+ = 3.0ꢀ
ꢀ+ = 3.6ꢀ
ꢀ+ = 3.0ꢀ
ꢀ+ = 3.6ꢀ
0.8
0.8
Input Low ꢀoltage
Input ꢁigh ꢀoltage
ꢀ
ꢀ
IL
2.0
2.0
-1
ꢀ
ꢀ
Iꢁ
Input Leakage Current
I
+1
µA
LEAK
ESꢁ ꢂROTECTION
ꢁuman Body Model, R_, G_, B_
8
2
ESD Protection
kꢀ
ꢁuman Body Model, SEL, EN, QP
_______________________________________________________________________________________
3
Triple Video Switch
AC ELECTRICAL CꢀARACTERISTICS—3.3V SUꢂꢂLY
(ꢀ+ = +3.3ꢀ, QP = GND, T = T
to T
. Typical values are at T = +25°C, unless otherwise noted.) (Note 2)
MAX A
A
MIN
ꢂARAMETER
Charge-Pump Noise
Turn-On Time
SYMBOL
CONꢁITIONS
MIN
TYꢂ
MAX
UNITS
µꢀ
ꢀ
R = R = 50
100
QP
ON
S
L
P-P
t
ꢀ
= +3ꢀ, R = 100 , Figure 2
25
µs
IN
L
ꢀ
= 0ꢀ, R
= 0 , C = 1.0nF,
L
GEN
GEN
Charge Injection
21
pC
ps
ps
Figure 3
Propagation Delay
t
/t
C = 10pF, R = R = 50 , Figure 4 (Note 3)
400
350
PꢁL PLꢁ
L
S
L
Skew between any two ports: R, G, B,
Figure 5 (Note 3)
Output Skew Between Ports
t
SKEW
3dB Bandwidth
Insertion Loss
Crosstalk
f
R = R = 50 , Figure 5
500
0.6
-40
Mꢁz
dB
MAX
S
L
I
1Mꢁz < f < 50Mꢁz, R = R = 50
S L
LOS
ꢀ
f < 50Mꢁz, R = R = 50 , Figure 5
dB
CT
S
L
R = R = 50 , ꢀ _ = 1ꢀ , f = 50Mꢁz,
Figure 5
S
L
IN
P-P
Off-Isolation
-55
dB
Off-Capacitance
On-Capacitance
C
f = 1Mꢁz, (R,G,B) to (R,G,B)
0
6
pF
pF
OFF
1,2
C
f = 1Mꢁz
10
ON
Note ꢄ: Maximum and minimum limits over temperature are guaranteed by design and characterization. Device is production tested
at T = +85°C.
A
Note 3: Guaranteed by design.
ꢃ
_______________________________________________________________________________________
Triple Video Switch
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
ON-RESISTANCE vs. V+
ON-RESISTANCE vs. V
ON-RESISTANCE vs. V+
RGB
5.0
10
9
8
7
6
5
4
3
2
1
0
5.0
4.9
4.8
4.7
4.6
4.5
4.4
4.3
4.2
4.1
4.0
QP = LOW
QP = LOW
V+ = 3.3V
QP = LOW
4.9
4.8
4.7
4.6
T
= +85 C
A
V+ = 4.5V
V+ = 5V
4.5
T
= +25 C
= -40 C
V+ = 3.3V
A
4.4
T
A
4.3
V+ = 3V
4.2
V+ = 3.6V
V+ = 5.5V
4.1
4.0
0
0.6
1.2
1.8
(V)
2.4
3.0
3.6
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3
(V)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
(V)
V
V
V
RGB
RGB
RGB
ON-RESISTANCE vs. V
ON-RESISTANCE vs. V+
ON-RESISTANCE vs. V
RGB
RGB
10
9
8
7
6
5
4
3
2
1
0
40
35
30
25
20
15
10
5
60
54
48
42
36
30
24
18
12
6
QP = HIGH
V+ = 4.5V
V+ = 5V
T
= +85 C
A
V+ = 5.5V
T
= +25 C
= -40 C
A
T
A
T
= +25 C
A
T
= +85 C
A
T
= -40 C
A
0
0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
(V)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
(V)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
(V)
V
V
V
RGB
RGB
RGB
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
RGB ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
700
650
600
550
500
450
400
350
300
250
200
1000
500
450
400
350
300
250
200
V+ = 5V
QP = HIGH
QP = LOW
100
10
ON-LEAKAGE
1
T
= +85 C
A
T
= +25 C
A
0.1
T
= -40 C
A
0.01
0.001
OFF-LEAKAGE
3.0
3.5
4.0
4.5
5.0
5.5
-40
-15
10
35
60
85
3.0
3.5
4.0
4.5
5.0
5.5
V+ (V)
TEMPERATURE ( C)
V+ (V)
_______________________________________________________________________________________
5
Triple Video Switch
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
RGB ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
TURN-ON TIMES
vs. TEMPERATURE
TURN-OFF TIMES
vs. TEMPERATURE
6.0
5.8
5.6
5.4
5.2
5.0
4.8
4.6
4.4
4.2
4.0
100
60
50
40
30
20
10
0
V+ = 3.3V
10
V+ = 3.3V
V+ = 3.3V
1
ON-LEAKAGE
V+ = 5V
0.1
V+ = 5V
0.01
OFF-LEAKAGE
0.001
-40
-15
10
35
60
85
-40
-15
10
35
60
85
-40
-15
10
35
60
85
TEMPERATURE ( C)
TEMPERATURE ( C)
TEMPERATURE ( C)
PROPAGATION DELAY
vs. TEMPERATURE
INSERTION LOSS
vs. FREQUENCY
INSERTION LOSS
vs. FREQUENCY
180
175
170
165
160
155
150
145
140
135
130
0
-1
-2
-3
-4
-5
0
V+ = 3.3V
V+ = 5V
-1
-2
-3
-4
-5
V+ = 3.3V
V+ = 5V
-40
-15
10
35
60
85
0.1
1
10
100
1000
0.1
1
10
100
1000
TEMPERATURE ( C)
FREQUENCY (MHz)
FREQUENCY (MHz)
OFF-ISOLATION/CROSSTALK
vs. FREQUENCY
OFF-ISOLATION/CROSSTALK
vs. FREQUENCY
0
-20
0
-20
-40
-60
-80
V+ = +3.3V
V+ = +5V
CROSSTALK
CROSSTALK
-40
-60
-80
OFF-ISOLATION
OFF-ISOLATION
-100
-120
-100
-120
0.1
1
10
FREQUENCY (MHz)
100
1000
0.1
1
10
FREQUENCY (MHz)
100
1000
6
_______________________________________________________________________________________
Triple Video Switch
Pin Description
ꢂIN
1
NAME
ꢀ+
FUNCTION
Supply ꢀoltage Input. Bypass ꢀ+ to GND with a 0.1µF or larger ceramic capacitor.
2
R0
RGB Input/Output
RGB Input/Output
RGB Input/Output
Ground
3
G0
4
B0
5
GND
Active-Low Enable Input. Drive EN high to disable the MAX4887. All I/Os are high impedance when
the device is disabled. Drive EN low for normal operation.
6
EN
7, 14
8
N.C.
R1
Not Internally Connected
RGB Input/Output
9
G1
B1
RGB Input/Output
10
11
12
13
15
RGB Input/Output
B2
RGB Input/Output
G2
R2
RGB Input/Output
RGB Input/Output
SEL
Select Input. Logic input for switching RGB switches (see Table 1).
Active-Low Charge-Pump Enable. Drive QP high to disable the internal charge pump (for ꢀ+ = 5ꢀ
only). RGB switch operates with reduced performance when the charge pump is disabled. Drive QP
low for normal operation.
16
EP
QP
EP
Exposed Pad. Connect exposed pad to ground plane.
Detailed Description
The MAX4887 triple, high-frequency switch is intended
for notebooks and monitors permitting RGB (red,
green, blue) signals to be switched from one driver to
one of two loads (1:2) or one of two sources to be con-
nected to one load (2:1). The MAX4887 provides three
SPDT high-bandwidth switches to route standard ꢀGA
R, G, and B signals (see Table 1).
R0
R1
R2
G0
B0
G1
G2
B1
B2
A boosted gate-drive voltage is generated by an inter-
nal charge pump to enhance the performance of the
RGB switches. The MAX4887 high-performance switch
utilizes n-channel architecture with internal high-drive
pullup from a low-noise charge pump resulting in very
low on-capacitance. The RGB switches function with
reduced performance when the charge pump is dis-
abled (ꢀ+ > 5ꢀ). The MAX4887’s global input (EN)
places all inputs/outputs in a high-impedance state,
providing rejection of all signals.
SWITCH
LOGIC
CONTROL
SEL
EN
CHARGE
PUMP
QP
MAX4887
Figure 1. Functional Diagram
Analog Signal Levels
The R_, G_, and B_ analog switches are identical, and
any of the three switches can be used to route red,
green, or blue video signals. All RGB inputs/outputs are
ESD protected to 8kꢀ ꢁuman Body Model (ꢁBM).
Analog signal inputs over the full voltage range (0 to
ꢀ+) are passed through the switch with minimal change
in on-resistance (QP = low). When QP = high, the
switches can operate within 1ꢀ of ꢀ+. The switches are
bidirectional; therefore, R_, G_, and B_ can be either
inputs or outputs.
_______________________________________________________________________________________
7
Triple Video Switch
Timing Diagrams/Test Circuits
V+
MAX4887
t
< 5ns
r
f
SWITCH
OUTPUT
t < 5ns
V+
0V
LOGIC
INPUT
V+
50%
RO, GO, BO
SWITCH
INPUT
V
IN
V
OUT
R_, G_, B_
R
C
L
L
t
OFF
SEL
V
OUT
0V
GND
LOGIC
INPUT
0.9 x V
0.9 x V
0UT
0UT
SWITCH
OUTPUT
t
ON
C INCLUDES FIXTURE AND STRAY CAPACITANCE.
L
RL
R + R
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
V
= V
IN
OUT
(
)
L
ON
Figure 2. Switching Time
V+
MAX4887
V
OUT
V+
SWITCH
OUTPUT
SWITCH
INPUT
V
OUT
R
GEN
R_, G_, B_
RO, GO, BO
GND
V
OUT
C
L
V
GEN
SEL
V+
0V
ON
OFF
OFF
SEL
Q = (
V
)(C )
OUT L
LOGIC INPUT (0 TO V+)
Figure 3. Charge Injection
Charge Pump
Logic Inputs (EN, SEL)
A low-noise charge pump with internal capacitors pro-
vides a doubled voltage for driving the RGB analog
switches when operating the MAX4887 at low voltages
The MAX4887 has two logic inputs that control the
switch configuration and on/off function. Use SEL to
switch (RGB) to (RGB) or (RGB) . Use EN to connect
0
1
2
(ꢀ+ < 5ꢀ). The charge pump adds less than 163µꢀ
P-P
the switch inputs to the outputs. Drive EN low to enable
the RGB switches inputs/outputs. Drive EN high to
place all inputs/outputs in a high-impedance state.
Table 1 illustrates the MAX4887 truth table.
of noise to the switches. When operating with ꢀ+ = 5ꢀ,
the charge pump can be disabled to further reduce
noise; however, the analog switch’s performance is
slightly degraded resulting in higher R
and insertion
ON
Table 1. Switch Truth Table
loss. Drive QP high to disable the charge pump. Drive
QP low for normal operation.
EN
0
SEL
0
FUNCTION
When operating the MAX4887 at 3.3ꢀ, connect QP
to GND.
(RGB) to (RGB)
0
1
2
0
1
(RGB) to (RGB)
0
1
X
R_, B_, and G_ ꢁigh Impedance
±
_______________________________________________________________________________________
Triple Video Switch
Timing Diagrams/Test Circuits (continued)
R_
+5V
V+
0.1 F
V
IN
0.5 x V
IN
0.5 x V
IN
SEL
V
OUT
R _,B_,G_
50
TRACE
0.5 X V
PLH1
OUT
10pF
MAX4887
GND
50
B_
R_
V
IN TRACE
R_, G_,B_
t
PHL1
t
V
EN
IN
QP
0.5 x V
IN
0.5 x V
IN
t
PLH2
0.5 X V
OUT
t
PHL2
B_
t
= t
- t
OR t
= t
PHL1 PHL2
SKEW PLH1 PLH2
Figure 4. Propagation Delay and Skew Measurement
Human Body Model
Applications Information
Several ESD testing standards exist for measuring the
robustness of ESD structures. The ESD protection of
the MAX4887 is characterized with the ꢁuman Body
Model. Figure 6 shows the model used to simulate an
ESD event resulting from contact with the human body.
The model consists of a 100pF storage capacitor that is
charged to a high voltage, then discharged through a
1.5k resistor. Figure 7 shows the current waveform
when the storage capacitor is discharged into a low
impedance.
Power-Supply Bypassing and Sequencing
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings because stresses beyond the listed rat-
ings can cause permanent damage to the device.
Always sequence ꢀ+ on first, followed by R_, G_, or B_
and the logic inputs. Bypass ꢀ+ to ground with a 0.1µF
or larger ceramic capacitor as close to the device as
possible.
Layout
ꢁigh-speed switches such as the MAX4887 require
proper PC board layout for optimum performance.
Ensure that impedance-controlled PC board traces for
high-speed signals are matched in length and as short
as possible. Connect the exposed paddle to a solid
ground plane.
ESD Test Conditions
ESD performance depends on a variety of conditions.
Please contact Maxim for a reliability report document-
ing test setup, methodology, and results.
Additional Applications Information
Figure 8 illustrates the MAX4887 being used in a laptop
in a 2:1 configuration (one of two sources connected to
a load). The switch assumes the dedicated DꢀD player
chip outputs R, G, B video, and the MAX4887 switches
between normal ꢀGA graphics and the dedicated DꢀD
device.
ESD Protection
As with all Maxim devices, ESD-protection structures
are incorporated to protect against electrostatic dis-
charges encountered during handling and assembly on
all pins. Additionally, the MAX4887 is protected to 8kꢀ
ꢁuman Body Model (ꢁBM) on all switches.
_______________________________________________________________________________________
9
Triple Video Switch
MAX4887
BANDWIDTH
NETWORK
ANALYZER
50 TRACE
1,2
(RGB)
(RGB)
50 TRACE
0
NETWORK
ANALYZER
I
100%
90%
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
I
P
r
CROSSTALK
NETWORK
ANALYZER
R
R
1
0
50 TRACE
50 TRACE
AMPERES
R13
49.9
36.8%
G
G
0
1
NETWORK
ANALYZER
10%
0
R13
49.9
TIME
0
t
RL
OFF-ISOLATION
t
DL
(RGB)
(RGB)
0
1,2
50 TRACE
R15
50 TRACE
NETWORK
ANALYZER
CURRENT WAVEFORM
NETWORK
ANALYZER
49.9
Figure 7. HBM Discharge Current Waveform
Figure 5. On-Loss, Off-Isolation, and Crosstalk
R
1M
R
D
1500
C
+5V
0.1 F
DISCHARGE
RESISTANCE
CHARGE-CURRENT-
LIMIT RESISTOR
QP
V+
HIGH-
VOLTAGE
DC
DEVICE
UNDER
TEST
R1
G1
B1
VGA
GRAPHIC
GENERATOR
C
s
100pF
STORAGE
CAPACITOR
SOURCE
VGA
MAX4887
R2
G2
B2
DEDICATED
DVD PLAYER
CHIP
Figure 6. Human Body ESD Test Model
SEL
EN
GND
FROM
CONTROL LINE
Figure 8. The MAX4887 Used in a 2:1 MUX Configuration
10 ______________________________________________________________________________________
Triple Video Switch
Pin Configuration
Chip Information
PROCESS: BiCMOS
TOP VIEW
12
11
10
9
R2
13
14
15
8
7
6
5
R1
N.C.
SEL
N.C.
EN
MAX4887
*EP
QP 16
GND
+
1
2
3
4
(3mm x 3mm) Thin QFN
*EXꢂOSEꢁ ꢂAꢁꢁLE. CONNECT TO GNꢁ.
______________________________________________________________________________________ 11
Triple Video Switch
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
(NE - 1)
X e
MARKING
E
E/2
D2/2
(ND - 1)
X e
D/2
AAAA
e
C
D2
D
L
k
b
0.10 M
C
A
B
C
L
E2/2
L
E2
C
C
L
L
0.10
C
0.08 C
A
A2
A1
L
L
e
e
PACKAGE OUTLINE
8, 12, 16L THIN QFN, 3x3x0.8mm
1
21-0136
G
2
PKG
8L 3x3
12L 3x3
16L 3x3
EXPOSED PAD VARIATIONS
REF. MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX.
DOWN
BONDS
ALLOWED
D2
E2
PKG.
PIN ID
JEDEC
CODES
A
b
0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80
0.25 0.30 0.35 0.20 0.25 0.30 0.20 0.25 0.30
2.90 3.00 3.10 2.90 3.00 3.10 2.90 3.00 3.10
2.90 3.00 3.10 2.90 3.00 3.10 2.90 3.00 3.10
MIN. NOM. MAX. MIN. NOM. MAX.
TQ833-1
T1233-1
T1233-3
T1233-4
T1633-1
T1633-2
T1633F-3
0.25
0.95
0.95
0.95
0.95
0.95
0.65
0.70 1.25
1.10 1.25
1.10 1.25
0.25
0.95
0.95
0.95
0.95
0.95
0.65
0.65
0.95
0.70 1.25
0.35 x 45°
0.35 x 45°
0.35 x 45°
0.35 x 45°
0.35 x 45°
0.35 x 45°
WEEC
NO
NO
D
1.10
1.10
1.25
1.25
WEED-1
WEED-1
WEED-1
WEED-2
WEED-2
E
e
YES
YES
NO
0.65 BSC.
0.50 BSC.
0.50 BSC.
1.25
1.25
1.10
1.10
1.10 1.25
L
N
0.35 0.55 0.75 0.45 0.55 0.65 0.30 0.40 0.50
1.10
1.10
0.80
0.80
1.10
1.25
1.25
0.95
0.95
1.25
8
12
16
YES
1.10 1.25
0.80 0.95
0.80 0.95
1.10 1.25
ND
NE
A1
A2
k
2
3
4
0.225 x 45° WEED-2
0.225 x 45° WEED-2
N/A
N/A
NO
2
3
4
T1633FH-3 0.65
T1633-4
0.95
0
0.02 0.05
0
0.02 0.05
0
0.02 0.05
0.35 x 45°
WEED-2
0.20 REF
0.20 REF
0.20 REF
-
-
-
-
-
-
0.25
0.25
0.25
NOTES:
1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994.
2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES.
3. N IS THE TOTAL NUMBER OF TERMINALS.
4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO
JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED
WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR
MARKED FEATURE.
5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.20 mm AND 0.25 mm
FROM TERMINAL TIP.
6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY.
7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION.
8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS.
9. DRAWING CONFORMS TO JEDEC MO220 REVISION C.
10. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY.
11. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY.
PACKAGE OUTLINE
8, 12, 16L THIN QFN, 3x3x0.8mm
2
21-0136
G
2
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
1ꢄ ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2006 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products, Inc.
Boblet
相关型号：
MAX4887ETE+T
Audio/Video Switch, 1 Func, 1 Channel, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, EXPOSED PAD, MO-220WEED-2, TQFN-16
MAXIM
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