19-1358; Rev 0; 4/98
Force-Sense Switches
General Description
The MAX4554/MAX4555/MAX4556 are CMOS analog ICs
configured as force-sense switches for Kelvin sensing in
automated test equipment (ATE). Each part contains
high-current, low-resistance switches for forcing current,
and higher resistance switches for sensing a voltage or
switching guard signals. The MAX4554 contains two
force switches, two sense switches, and two guard
switches configured as two triple-pole/single-throw
(3PST) normally open (NO) switches. The MAX4555 con-
tains four independent single-pole/single-throw (SPST)
normally closed (NC) switches, two force switches, and
two sense switches. The MAX4556 contains three inde-
pendent single-pole/double-throw (SPDT) switches, of
which one is a force switch and two are sense switches.
These devices operate from a single supply of +9V to
+40V or dual supplies of ±4.5V to ±20V. On-resistance
(6Ω max) is matched between switches to 1Ω max.
Each switch can handle Rail-to-Rail
®
analog signals.
The off-leakage current is only 0.25nA at +25°C and
2.5nA at +85°C. The MAX4554 is also fully specified for
+20V and -10V operation.
All digital inputs have +0.8V and +2.4V logic thresh-
olds, ensuring both TTL- and CMOS-logic compatibility.
Features
o
6Ω Force Signal Paths (±15V Supplies)
1Ω Force Signal Matching (±15V Supplies)
o
60Ω Sense-Guard Signal Paths (±15V Supplies)
8Ω Sense-Guard Signal Matching (±15V Supplies)
o
Rail-to-Rail Signal Handling
o
Break-Before-Make Switching (MAX4556)
o
t
ON
and t
OFF
= 275ns (±15V Supplies)
o
Low 1µA Power Consumption
o
>2kV ESD Protection per Method 3015.7
o
TTL/CMOS-Compatible Inputs
MAX4554/MAX4555/MAX4556
Ordering Information
PART
MAX4554CPE
MAX4554CSE
MAX4554C/D
MAX4554EPE
MAX4554ESE
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
PIN-PACKAGE
16 Plastic DIP
16 Narrow SO
Dice*
16 Plastic DIP
16 Narrow SO
Applications
Automated Test Equipment (ATE)
Calibrators
Precision Power Supplies
Automatic Calibration Circuits
Asymmetric Digital Subscriber Line (ADSL)
with Loopback
Ordering Information continued at end of data sheet.
*Contact
factory for availability.
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
MAX4554
NOG1 1
NOS1 2
NOF1* 3
V- 4
GND 5
NOF2* 6
NOS2 7
NOG2 8
16 COMG
15 COMS
14 COMF*
13 V+
12 VL
11 IN1
10 IN2
9 EN
EN
1
0
0
0
0
IN1
X
0
0
1
1
MAX4554
IN2 COMG
X
OFF
0
OFF
1
NOG2
0
NOG1
NOG1
1
&
NOG2
COMS
OFF
OFF
NOS2
NOS1
NOS1
&
NOS2
COMF*
OFF
OFF
NOF2*
NOF1*
NOF1*
&
NOF2*
NOTE: SWITCH POSITIONS SHOWN WITH IN_ = LOW
*INDICATES HIGH-CURRENT, LOW-RESISTANCE FORCE SWITCH
X = DON’T CARE
DIP/SO
MAX4555/MAX4556 shown at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
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