19-0271; Rev 0; 7/94
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
_______________General Description
The MAX308/MAX309 precision, monolithic, CMOS ana-
log multiplexers (muxes) offer low on-resistance (less
than 100Ω), which is matched to within 5Ω between
channels and remains flat over the specified analog sig-
nal range (7Ω max). They also offer low leakage over
temperature (NO-off leakage current less than 5nA at
+85°C) and fast switching speeds (transition time less
than 250ns). The MAX308 is a single-ended 1-of-8
device, and the MAX309 is a differential 2-of-4 device.
The MAX308/MAX309 are fabricated with Maxim’s
improved 44V silicon-gate process. Design improve-
ments yield extremely low charge injection (less than
10pC) and guarantee electrostatic discharge protection
greater than 2000V.
These muxes operate with a single +4.5V to +30V sup-
ply or bipolar ±4.5V to ±20V supplies, while retaining
TTL/CMOS-logic input compatibility and fast switching.
CMOS inputs provide reduced input loading. These
improved parts are plug-in upgrades for the industry-
standard DG408, DG409, DG508A, and DG509A.
____________________________Features
o
Guaranteed On-Resistance Match Between
Channels, <5Ω Max
o
Low On-Resistance, <100Ω Max
o
Guaranteed Flat On-Resistance over Specified
Signal Range, 7Ω Max
o
Guarateed Low Charge Injection, <10pC
o
NO-Off Leakage Current <5nA at +85°C
o
COM-Off Leakage Current <20nA at +85°C
o
ESD Protection >2000V
o
Plug-In Upgrade for Industry-Standard
DG408/DG409/DG508A/DG509A
o
Single-Supply Operation (+4.5V to +30V)
Bipolar-Supply Operation (±4.5V to ±20V)
o
Low Power Consumption, <300µW
o
Rail-to-Rail Signal Handling
o
TTL/CMOS-Logic Compatible
MAX308/MAX309
______________Ordering Information
PART
MAX308CPE
MAX308CSE
MAX308C/D
MAX308EPE
MAX308ESE
MAX308EJE
MAX308MJE
TEMP. RANGE
0°C to +70°C
0°C to +70°C
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
PIN-PACKAGE
16 Plastic DIP
16 Narrow SO
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP
16 CERDIP**
________________________Applications
Sample-and-Hold Circuits
Automatic Test Equipment
Heads-Up Displays
Guidance and Control Systems
Military Radios
Communications Systems
Battery-Operated Systems
PBX, PABX
Audio Signal Routing
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
** Contact factory for availability.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
A0
1
EN
2
V-
3
NO1
4
NO2
5
NO3
6
NO4
7
COM
8
16
A1
15
A2
14
GND
NO1
NO2
NO3
NO4
NO5
NO6
NO7
NO8
CMOS DECODE LOGIC
COM
V+
V-
GND
MAX308
13
V+
12
NO5
11
NO6
10
NO7
9
NO8
DIP/SO
Continued at end of data sheet.
A2
A1
A0
EN
MAX308 8-CHANNEL SINGLE-ENDED MULTIPLEXER
________________________________________________________________
Maxim Integrated Products
1
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