MAX4885 Maxim, MAX4885 Datasheet - Page 7

• Manufacturer Part Number: MAX4885
• Description: The MAX4885 integrates high-bandwidth analog switches and level translating buffers to implement a complete 1:2 or 2:1 multiplexer for VGA signals
• Manufacturer: Maxim

Figure 1. Switching Time
Figure 2. Propagation Delay and Skew Waveforms
Figure 3. Charge Injection
MAX4885
LOGIC
INPUT
MAX4885
V
GEN
V
N_
_______________________________________________________________________________________
C
V
L
OUT
R
GEN
INCLUDES FIXTURE AND STRAY CAPACITANCE.
R1, G1, B1
R2, G2, B2
SEL
= V
GND
N_
R1, G1, B1
R2, G2, B2
(
R
Complete VGA 1:2 or 2:1 Multiplexer
L
GND
R
+ R
L
ON
t
t
SKEW
PD
R0, G0, B0
)
INPUT
OUTPUT
= MAX (t
V+
V+
= | t
SEL
PLH
R0, G0, B0
V
PLH
IL
- t
TO V
, t
PHL
V+
V+
PHL
IH
|
)
R
L
50%
t
PLH
50%
C
C
L
L
V
OUT
V
OUT
SWITCH
OUTPUT
LOGIC
INPUT
Timing Circuits/Timing Diagrams
V
OUT
IN
IN
50%
t
V+
0V
0V
PHL
OFF
OFF
50%
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
1V
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
0V
0.9V
50%
V
0V
OUT
R
C
Q = (ΔV
S
L
V
= R
OH
= 10pF
0.9 x V
L
= 50Ω
ON
ON
OUT
0UT
)(C
L
)
t
OFF
50%
ΔV
t r < 5ns
t f < 5ns
0.9 x V
OUT
OFF
OFF
OUT
7