Datasheet

MAX4548/MAX4549
Serially Controlled, Triple 3x2 Audio/Video
Crosspoint Switches
10 ______________________________________________________________________________________
COM1A
COM2C
MID5
COM1C
CBIASL
COM2A
MID2
COM1B
MID1
MID3
Output 1 of Crosspoint A 3131
Output 2 of Crosspoint C 3333
Video Bypass for All Inputs to Crosspoint C3434
Output 1 of Crosspoint C 3535
High Side of Bias Network for Crosspoint C. Use to give the C outputs a DC bias when
inputs are AC-coupled (refer to the Using the Internal Bias Resistors section).
3636
Output 2 of Crosspoint A2727
Audio Bypass for IN2A and IN2B Inputs2828
Output 1 of Crosspoint B2929
Audio Bypass for IN1A and IN1B Inputs3030
Audio Bypass for IN3A and IN3B Inputs2626
NAME
PIN
FUNCTION
Pin Description (continued)
R
L
300Ω
C
L
35pF
V
OUT
V
NO_ _
V+
10nF
V+
GND
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
V
OUT
= V
COM
[R
L
/ (R
L
+ R
ON
)]
2 OR 3
SERIAL
INTERFACE
DECODER/
CONTROLLER
µP
3-WIRE
2-WIRE
SCL
CS
3V
0
V
OUT
0
V
OUT
0
3V
0
V
OUT
0
V
OUT
0
50%
50%
t
ON
t
ON
t
OFF
t
OFF
+0.5V
V
OUT -
0.5V
0.9
•
V
OUT
0.1
•
V
OUT
t
R
> 20ns
t
F
> 20ns
ACKNOWLEDGE
BIT
COM _
NO_ _
MAX4548
MAX4549
Figure 1. Switching Times
MAX4548 MAX4549