
1
FN3148.3
HI-524
4-Channel Wideband and Video
Multiplexer
The HI-524 is a 4-Channel CMOS analog multiplexer designed
to process single-ended signals with bandwidths up to 10MHz.
The chip includes a 1 of 4 decoder for channel selection and an
enable input to inhibit all channels (chip select).
Three CMOS transmission gates are used in each channel,
as compared to the single gate in more conventional CMOS
multiplexers. This provides a double barrier to the unwanted
coupling of signals from each input to the output. In addition,
Dielectric Isolation (DI) processing helps to insure the
Crosstalk is less than -60dB at 10MHz.
The HI-524 is designed to operate into a wideband buffer
amplifier such as the Intersil HA-2541. The multiplexer chip
includes two “ON” switches in series, for use as a feedback
element with the amplifier. This feedback resistance
matches and tracks the channel ON resistance, to minimize
the amplifier VOS and its variation with temperature.
The HI-524 is well suited to the rapid switching of video and
other wideband signals in telemetry, instrumentation, radar
and video systems.
Pinout
HI-524 (CERDIP)
TOP VIEW
Features
Crosstalk (10MHz) . . . . . . . . . . . . . . . . . . . . . . . .< -60dB
Fast Access Time . . . . . . . . . . . . . . . . . . . . . . . . . 150ns
Fast Settling Time . . . . . . . . . . . . . . . . . . . . . . . . . 200ns
TTL Compatible
Applications
Wideband Switching
Radar
TV Video
ECM
Functional Diagram
Ordering Information
PART
NUMBER
TEMP. RANGE
(oC)
PACKAGE
PKG. NO.
HI1-0524-5
0 to 75
18 Ld CERDIP
F18.3
10
11
12
13
14
15
16
17
18
9
8
7
6
5
4
3
2
1
FB (IN)
FB (OUT)
SIG GND
IN2
SIG GND
IN1
EN
-V
A0
+V
OUT
SIG GND
IN4
SIG GND
SUPPLY GND
IN3
A1
TRUTH TABLE
A1
A0
EN
ON CHANNEL
XX
L
None
LL
H
1 (Note)
LH
H
2
HL
H
3
HHH
4
NOTE: Channel 1 is shown selected in the Functional Diagram.
1 OF 4
DECODER
FB (IN)
FB (OUT)
OUTPUT
IN1
SIG GND
IN2
IN3
SIG GND
IN4
SIG GND
-15V SUP
GND
+15V
EN
A0
A1
1
Data Sheet
April 2002
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2002. All Rights Reserved