MAX4851H Maxim, MAX4851H Datasheet - Page 10

• Manufacturer Part Number: MAX4851H
• Description: The MAX4851/MAX4851H/MAX4853/MAX4853H family of quad single-pole/single-throw (SPST) switches operates from a single +2V to +5
• Manufacturer: Maxim

3.5 Ω Ω /7 Ω Ω Quad SPST Switches with Over-Rail
Signal Handling
Figure 1. Switching Time
Figure 2. Input/Output Skew Timing Diagram
10
______________________________________________________________________________________
MAX4851_
MAX4853_
LOGIC
INPUT
TxD+
TxD-
V
NO
C
V
OUT
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
NO_
IN_
= V
GND
R
C
NO
s
L
V
V
= 39Ω
= 50pF
CC
CC
(
R
L
R
+ R
L
ON
R
R
s
s
)
COM_
A-
A
R
L
B
B-
C
C
L
L
C
OUTPUT B
L
OUTPUT B-
V
INPUT A
INPUT A-
OUT
SWITCH
OUTPUT
SWITCH
LOGIC
INPUT
INPUT
Test Circuits/Timing Diagrams
V
V
OUT
V
CC
0V
0V
CC
10%
90%
90%
10%
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%
10%
t
skew_i
90%
skew_o
10%
+ 0.5V
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