19-1414; Rev 0; 1/99
Fa u lt -P ro t e c t e d , Hig h -Vo lt a g e
S in g le 8 -t o -1 /Du a l 4 -t o -1 Mu lt ip le x e rs
8/MAX4509
Ge n e ra l De s c rip t io n
Fe a t u re s
The MAX4508/MAX4509 are 8-to-1 and dual 4-to-1 fault-
protected multiplexers that are pin-compatible with the
ind us try-s ta nd a rd DG508/DG509. The MAX4508/
MAX4509 operate with dual supplies of ±4.5V to ±20V or
a single supply of +9V to +36V. These multiplexers fea-
ture fault-protected inputs, Rail-to-Rail signal handling
capability, and overvoltage clamping at 150mV beyond
the rails.
♦ ±40V Fault Protection with Power Off
±25V Fault Protection with ±15V Supplies
♦ Rail-to-Rail Signal Handling
♦ No Power-Supply Sequencing Required
♦ All Channels Off with Power Off
♦ Output Clamped to Appropriate Supply Voltage
®
During Fault Condition
♦ 1kΩ Output Clamp Resistance During
Both parts offer ±40V overvoltage protection with sup-
plies off and ±25V protection with supplies on. On-
re s is ta nc e is 400Ω ma x a nd is ma tc he d b e twe e n
channels to 15Ωmax. All digital inputs have TTL logic
thresholds, ensuring both TTL and CMOS logic com-
patibility when using a single +12V supply or dual ±15V
supplies.
Overvoltage
♦ 400Ωmax On-Resistance
♦ 20ns Fault-Response Time
♦ ±4.5V to ±20V Dual Supplies
+9V to +36V Single Supply
♦ TTL/CMOS-Compatible Logic Inputs
Ap p lic a t io n s
Ord e rin g In fo rm a t io n
Data-Acquisition Systems
Industrial and Process Control
Avionics
PART
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
16 SSOP
MAX4508CAE
MAX4508CSE
MAX4508CPE
MAX4508C/D
MAX4508EAE
MAX4508ESE
MAX4508EPE
MAX4508MJE
0°C to +70°C
16 Narrow SO
16 Plastic DIP
Dice*
Signal Routing
0°C to +70°C
Redundant/Backup Systems
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
16 SSOP
16 Narrow SO
16 Plastic DIP
16 CERDIP**
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**Contact factory for availability.
Functional Diagrams/Truth Tables appear at end of
data sheet.
P in Co n fig u ra t io n s /Fu n c t io n a l Dia g ra m s
TOP VIEW
MAX4508
LOGIC
MAX4509
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
A0
16 A1
15 A2
A0
16 A1
15 GND
EN
V-
EN
V-
LOGIC
GND
V+
14
14
13 NO1B
12
NO1
NO2
NO3
NO4
COM
NO1A
NO2A
NO3A
NO4A
COMA
13 V+
12
NO5
NO2B
11 NO3B
11 NO6
NO7
NO8
NO4B
10
9
10
9
COMB
SSOP/SO/DIP
SSOP/SO/DIP
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________ Maxim Integrated Products
1
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