MAX4854HL Maxim, MAX4854HL Datasheet - Page 6

• Manufacturer Part Number: MAX4854HL
• Description: The MAX4854H/MAX4854HL analog switches operate from a single +2V to +5
• Manufacturer: Maxim

Quad SPST, High-Bandwidth, Signal Line
Protection Switch
Figure 1. Switching Time
Figure 2. Output Signal Skew
6
_______________________________________________________________________________________
MAX4854H
LOGIC
INPUT
|t
|t
|t
|t
ro -
fo -
skew_o
skew_i
TxD+
TxD-
V
t
t
fi
ri
NO
|
|
|
|
DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS.
CHANGE IN SKEW THROUGH THE SWITCH FOR INPUT SIGNALS.
DELAY DUE TO SWITCH FOR FALLING INPUT AND FALLING OUTPUT SIGNALS.
CHANGE IN SKEW THROUGH THE SWITCH FOR OUTPUT SIGNALS.
C
V
OUT
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
NO_
IN_
= V
GND
NO
R
C
s
L
= 39Ω
(
= 50pF
R
L
R
+ R
L
ON
R
R
s
)
s
V
V
COM_
CC
CC
A-
A
R
L
B-
B
C
C
L
L
C
L
OUTPUT B
OUTPUT B-
V
OUT
INPUT A
INPUT A-
OUTPUT
SWITCH
SWITCH
LOGIC
INPUT
INPUT
Test Circuits/Timing Diagrams
V
V
OUT
CC
0V
0V
90%
10%
10%
90%
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
NORMAL MODE
t
t
t
t
ri
fi
ro
50%
fo
50%
50%
50%
t
t
50%
V
ON
HIZ
CC
t
90%
t
skew_i
10%
90%
+ 0.5V
skew_o
10%
0.9 x V
HIGH-Z MODE
0UT
t
OFF
t
HIZB
0.9 x V
NORMAL MODE
t R < 20ns
t F < 20ns
OUT