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Maxim Integrated |
19-1358; Rev 0; 4/98
Force-Sense Switches
General Description
Features
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.
Applications
Automated Test Equipment (ATE)
Calibrators
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 tON and tOFF = 275ns (±15V Supplies)
o Low 1µA Power Consumption
o >2kV ESD Protection per Method 3015.7
o TTL/CMOS-Compatible Inputs
Ordering Information
PART
MAX4554CPE
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
16 Plastic DIP
MAX4554CSE
0°C to +70°C
16 Narrow SO
MAX4554C/D
MAX4554EPE
MAX4554ESE
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
Dice*
16 Plastic DIP
16 Narrow SO
Ordering Information continued at end of data sheet.
*Contact factory for availability.
Precision Power Supplies
Automatic Calibration Circuits
Asymmetric Digital Subscriber Line (ADSL)
with Loopback
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
NOG1 1
NOS1 2
NOF1* 3
V- 4
GND 5
NOF2* 6
NOS2 7
NOG2 8
MAX4554
DIP/SO
16 COMG
15 COMS
14 COMF*
13 V+
12 VL
11 IN1
10 IN2
9 EN
MAX4554
EN IN1 IN2 COMG COMS COMF*
1 X X OFF OFF OFF
0 0 0 OFF OFF OFF
0 0 1 NOG2 NOS2 NOF2*
0 1 0 NOG1 NOS1 NOF1*
01
NOG1 NOS1 NOF1*
1& & &
NOG2 NOS2 NOF2*
NOTE: SWITCH POSITIONS SHOWN WITH IN_ = LOW
*INDICATES HIGH-CURRENT, LOW-RESISTANCE FORCE SWITCH
X = DON’T CARE
MAX4555/MAX4556 shown at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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For small orders, phone 408-737-7600 ext. 3468.
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Force-Sense Switches
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND)
V+ ...........................................................................-0.3V to +44V
V- ............................................................................-25V to +0.3V
V+ to V-...................................................................-0.3V to +44V
All Other Pins (Note 1) ..........................(V- - 0.3V) to (V+ + 0.3V)
Continuous Current into Force Terminals .......................±100mA
Continuous Current into Any Other Terminal....................±30mA
Peak Current into Force Terminals
(pulsed at 1ms, 10% duty cycle).................................±300mA
Peak Current into Any Other Terminal
(pulsed at 1ms, 10% duty cycle).................................±100mA
ESD per Method 3015.7 ..................................................>2000V
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ...........842mW
Narrow SO (derate 8.7mW/°C above +70°C) ...............696mW
Operating Temperature Ranges
MAX455_C_ E ......................................................0°C to +70°C
MAX455_E_ E ...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1: Signals on analog or digital pins exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maxi-
mum current rating.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX4554 (+20V, -10V Supplies)
(V+ = +20V, V- = -10V, VL = 5V, GND = 0V, VIN_H = 2.4V, VIN_L = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values
are at TA = +25°C.)
PARAMETER
SYMBOL
6Ω ANALOG SWITCH (FORCE)
Analog Signal Range
VCOMF,
VNOF_
(Note 3)
CONDITIONS
On-Resistance
RON
VCOMF = 10V, ICOMF = 10mA
On-Resistance Match
(Note 4)
∆RON
VCOMF = 10V, ICOMF = 10mA
On-Resistance Flatness
(Note 5)
RFLAT(ON)
VCOMF = +5V, 0V, -5V;
ICOMF = 10mA
NOF_ Off-Leakage Current
INOF_(OFF)
V+ = 22V, V- = -11V,
VCOMF = ±10V, VNOF_ = 10V
COMF Off-Leakage Current
ICOMF(OFF)
V+ = 22V, V- = -11V,
VCOMF = ±10V, VNOF_ = 10V
COMF On-Leakage Current
ICOMF(ON)
V+ = 22V, V- = -11V,
VCOMF = ±10V
Charge Injection
Q VCOMF = 0, Figure 13
60Ω ANALOG SWITCH (SENSE-GUARD)
Analog Signal Range
VCOMS,
VCOMG,
VNOS_,
VNOG_
(Note 3)
On-Resistance
RON
VCOM_ = 10V, ICOM_ = 1mA
On-Resistance Match
(Note 4)
∆RON
VCOM_ = 10V, ICOM_ = 1mA
TA
MIN TYP
(Note 2)
MAX
UNITS
C, E V-
V+
+25°C
3.5 6
C, E 7
+25°C
0.4 1
C, E 1.5
+25°C
0.5 1.5
C, E 2.0
+25°C -0.25 0.03 0.25
C, E -2.5
2.5
+25°C -0.5 0.03
0.5
C, E -2.5
2.5
+25°C -0.5 0.06
0.5
C, E -10
10
C, E 80
V
Ω
Ω
Ω
nA
nA
nA
pC
C, E V-
V+ V
+25°C
C, E
+25°C
C, E
34 60
Ω
70
58
Ω
10
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