MAX4508 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Fault-Protected, High-Voltage Single 8-to-1/Dual 4-to-1 Multiplexers

19-1414; Rev 0; 1/99
Fault-Protected, High-Voltage
Single 8-to-1/Dual 4-to-1 Multiplexers
General Description
The MAX4508/MAX4509 are 8-to-1 and dual 4-to-1 fault-
protected multiplexers that are pin-compatible with the
industry-standard 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.
Both parts offer ±40V overvoltage protection with sup-
plies off and ±25V protection with supplies on. On-
resistance is 400Ω max and is matched between
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.
Applications
Data-Acquisition Systems
Industrial and Process Control
Avionics
Signal Routing
Redundant/Backup Systems
Functional Diagrams/Truth Tables appear at end of
data sheet.
Features
o ±40V Fault Protection with Power Off
±25V Fault Protection with ±15V Supplies
o Rail-to-Rail Signal Handling
o No Power-Supply Sequencing Required
o All Channels Off with Power Off
o Output Clamped to Appropriate Supply Voltage
During Fault Condition
o 1kΩ Output Clamp Resistance During
Overvoltage
o 400Ωmax On-Resistance
o 20ns Fault-Response Time
o ±4.5V to ±20V Dual Supplies
+9V to +36V Single Supply
o TTL/CMOS-Compatible Logic Inputs
Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
MAX4508CAE
0°C to +70°C
16 SSOP
MAX4508CSE
0°C to +70°C
16 Narrow SO
MAX4508CPE
0°C to +70°C
16 Plastic DIP
MAX4508C/D
0°C to +70°C
Dice*
MAX4508EAE
-40°C to +85°C
16 SSOP
MAX4508ESE
-40°C to +85°C
16 Narrow SO
MAX4508EPE
-40°C to +85°C
16 Plastic DIP
MAX4508MJE
-55°C to +125°C 16 CERDIP**
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**Contact factory for availability.
Pin Configurations/Functional Diagrams
MAX4508
TOP VIEW
MAX4509
A0 1
EN 2
V- 3
NO1 4
NO2 5
NO3 6
NO4 7
COM ₈
LOGIC
16 A1
15 A2
14 GND
13 V+
12 NO5
11 NO6
10 NO7
9 NO8
A0 1
EN 2
V- 3
NO1A 4
NO2A 5
NO3A 6
NO4A 7
COMA ₈
LOGIC
16 A1
15 GND
14 V+
13 NO1B
12 NO2B
11 NO3B
10 NO4B
9 COMB
SSOP/SO/DIP
SSOP/SO/DIP
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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