MAX4887ETE+ Maxim Integrated Products, MAX4887ETE+ Datasheet - Page 7

• Manufacturer Part Number: MAX4887ETE+
• Description: IC SWITCH VIDEO TRPL 16TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX4887ETE+

• Function: Video Switch
• Circuit: 3 x 1:2
• On-state Resistance: 6.5 Ohm
• Voltage Supply Source: Single Supply
• Voltage - Supply, Single/dual (±): 3.3V, 5V
• Current - Supply: 1µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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 VGA
R, G, and B signals (see Table 1).
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 (V+ > 5V). The MAX4887’s global input (EN)
places all inputs/outputs in a high-impedance state,
providing rejection of all signals.
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 ±8kV Human Body Model (HBM).
7, 14
PIN
EP
10
11
12
13
15
16
1
2
3
4
5
6
8
9
NAME
GND
N.C.
SEL
G0
EN
G1
G2
QP
_______________________________________________________________________________________
V+
R0
B0
R1
B1
B2
R2
EP
Detailed Description
Supply Voltage Input. Bypass V+ to GND with a 0.1µF or larger ceramic capacitor.
RGB Input/Output
RGB Input/Output
RGB Input/Output
Ground
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.
Not Internally Connected
RGB Input/Output
RGB Input/Output
RGB Input/Output
RGB Input/Output
RGB Input/Output
RGB Input/Output
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 V+ = 5V
only). RGB switch operates with reduced performance when the charge pump is disabled. Drive QP
low for normal operation.
Exposed Pad. Connect exposed pad to ground plane.
Analog signal inputs over the full voltage range (0 to
V+) are passed through the switch with minimal change
in on-resistance (QP = low). When QP = high, the
switches can operate within 1V of V+. The switches are
bidirectional; therefore, R_, G_, and B_ can be either
inputs or outputs.
Figure 1. Functional Diagram
FUNCTION
Triple Video Switch
SEL
G0
EN
B0
R0
CONTROL
SWITCH
LOGIC
MAX4887
Analog Signal Levels
CHARGE
PUMP
Pin Description
R1
R2
G1
G2
B2
B1
QP
7