MAXIM MAX354, MAX355 Technical data

19-0389; Rev. 2; 9/96

Fault-Protected Analog Multiplexers

_______________General Description

The MAX354/MAX355 fault-protected multiplexers (muxes) use a series N-channel, P-channel, N-channel structure that protects the devices from overvoltage up to 40V beyond the supply rails during power-up, powerdown, and fault conditions. The MAX354/MAX355 also protect sensitive circuit components against voltages near or beyond the normal supplies.

The MAX354 single 8-channel mux and the MAX355 dual 4-channel mux protect analog signals while operating from a single 4.5V to 36V supply or ±4.5V to ±18V dual supplies. These muxes have 350Ω on-resistance and can be used for demultiplexing as well as multiplexing. Input leakage current is less than 0.5nA at +25°C and less than 5nA at +85°C.

All digital inputs have 0.8V and 2.4V logic thresholds, ensuring both TTL and CMOS logic compatibility without pull-up resistors. Break-before-make operation is guaranteed and power consumption is less than

1.5mW.

________________________Applications

Data-Acquisition Systems Industrial and Process Control Avionics ATE Equipment Signal Routing Redundant/Backup Systems

____________________________Features

♦ 350Ω Max On-Resistance ♦ Improved 2nd Source for MAX358/MAX359 and

DG458/DG459

♦ Pin Compatible with ADG508F/ADG509F ♦ All Switches Off with Supplies Off ♦ On Switch Turns Off with Overvoltage ♦ Output Clamps at 1.5V Below Supply Rails ♦ 0.5nA Max Input Leakage at +25°C (5nA at +85°C) ♦ No Power-Up Sequencing Required ♦ TTL and CMOS-Logic Compatibility

______________Ordering Information

PART

MAX354CPE

MAX354CWE MAX354C/D 0°C to +70°C MAX354EPE MAX354EWE -40°C to +85°C MAX354MJE -55°C to +125°C 16 CERDIP** MAX355CPE MAX355CWE MAX355C/D 0°C to +70°C MAX355EPE MAX355EWE -40°C to +85°C MAX355MJE -55°C to +125°C 16 CERDIP**

* Dice are tested at TA = +25°C only. ** Contact factory for availability.

TEMP. RANGE PIN-PACKAGE

0°C to +70°C 0°C to +70°C

-40°C to +85°C 16 Plastic DIP

0°C to +70°C 16 Plastic DIP 0°C to +70°C

-40°C to +85°C 16 Plastic DIP

16 Plastic DIP 16 Wide SO Dice*

16 Wide SO

16 Wide SO Dice*

16 Wide SO

MAX354/MAX355

__________________________________________________________Pin Configurations

TOP VIEW

MAX354

LOGIC

V-

NO1

NO2

NO3

NO4

COM

DIP/SO

________________________________________________________________

A1 A2

GND

V+

13 12

NO5 NO6

NO7

NO8

A0 EN

VNO1A NO2A NO3A NO4A

COMA

MAX355

1 2

LOGIC

3 4 5 6 7 8

DIP/SO

16 15 14 13 12 11 10

Maxim Integrated Products

A1 GND V+ NO1B NO2B NO3B NO4B COMB

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

Fault-Protected Analog Multiplexers

ABSOLUTE MAXIMUM RATINGS

(Voltages referenced to GND, unless otherwise noted.)

V+...........................................................................-0.3V to +44V

V-............................................................................+0.3V to -44V

V+ to V-...................................................................-0.3V to +44V

Digital Inputs.........................................(V+ + 0.3V) to (V- - 0.3V)

Input Overvoltage with Mux Power On

V+ = +15V ....................................................................... +25V

V- = -15V............................................................................-25V

Input Overvoltage with Mux Power Off

V+ = 0V.............................................................................+40V

V- = 0V...............................................................................-40V

Continuous Current into Any Terminal .............................±30mA

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

MAX354/MAX355

(V+ = +15V, V- = -15V, GND = 0V, VAH= V

= 2.4V, VAL= V

ENH

SWITCH

Analog Signal Range Fault-Free Analog

Signal Range

On-Resistance (Note 2)

On-Resistance Matching Between Channels

NO-Off Leakage Current (Note 4)

COM-Off Leakage Current (Note 4)

COM

∆R

NO(OFF)

COM(OFF)

(Note 1)

, V

V+ = +15V, V- = -15V (Note 1)

INO= 1.0mA, V

(Note 3) V

COM

= ±10V, VNO= ±10V, VEN= 0V

V V

COM NO

= ±10V,

VEN= 0V

= ±10V,

COM NO

= ±10V,

COM

VEN= 0V

= ±10V,

COM

COM-On Leakage Current (Note 4)

COM(ON)

= ±10V,

sequence each switch on

Peak Current into Any Terminal........................................±50mA

Continuous Power Dissipation (T

= +70°C)

Plastic DIP (derate 10.53mW/°C above +70°C) ...........842mW

Wide SO (derate 9.52mW/°C above +70°C)................ 762mW

CERDIP (derate 10.00mW/°C above +70°C) ...............800mW

Operating Temperature Ranges

MAX35_C_ _ ........................................................0°C to +70°C

MAX35_E_ _......................................................-40°C to +85°C

MAX35_M_ _...................................................-55°C to +125°C

Storage Temperature Range.............................-65°C to +150°C

Lead Temperature (soldering, 10sec)............................ +300°C

= 0.8V, TA= T

ENL

MIN

to T

, unless otherwise noted.)

MAX

CONDITIONS

-12 12 285 350

450 500

712

= ±10V

MAX354

MAX355

MAX354

MAX355

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C TA= T

MIN

to T

MAX

to T

C, E M

MAX

C, E M

-0.5 0.01 0.5

-5.0 5.0

-50 50

-0.5 0.02 0.5

-25 25

-100 100

-0.5 0.02 0.5

-15 15

-50 50

-0.5 0.02 0.5

-30 30

-200 200

-0.5 0.02 0.5

-15 15

-100 100

UNITSMIN TYP MAXSYMBOLPARAMETER

V(V+ - 40) (V- + 40) V

Ω

2 _______________________________________________________________________________________

Fault-Protected Analog Multiplexers

ELECTRICAL CHARACTERISTICS (continued)

(V+ = +15V, V- = -15V, GND = 0V, VAH= V

FAULT

Output Leakage Current (with Overvoltage)

Input Leakage Current (with Overvoltage)

Input Leakage Current (with Power Supplies Off)

DIGITAL LOGIC INPUT

Logic High Input Voltage Logic Low Input Voltage

Input Current with Input Voltage High

Input Current with Input Voltage Low

A_H

A_L

A_H

A_L

, V , V

, I

ENH ENL

ENH

ENL

SUPPLY

I+Positive Supply Current

I-Negative Supply Current

DYNAMIC

Transition Time

Enable Turn-On Time

Enable Turn-Off Time Break-Before-Make Interval Charge Injection

Off Isolation

TRANS

ON(EN)

OFF(EN)

OPEN

CTE

ISO

= 2.4V, VAL= V

ENH

= 0.8V, TA= T

ENL

CONDITIONS

VD= 0V, analog overvoltage = ±33V

VIN= ±25V, VO= ±10V

VIN= ±25V, VEN= VO= 0V, VA0= VA1= VA2= 0V or 5V

VA= VEN= 2.4V µA

VEN= VA= 5V

VEN= VA= 0V

Figure1

Figure 2

Figure 2 Figure 3

CL= 10nF, VS= 0V, RS= 0Ω, Figure 4

VEN= 0V, RL= 1kΩ, f = 100kHz, Figure 5

MIN

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

TA= T

MIN MIN

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

TA= +25°C TA= +25°C

TA= +25°C

to T

, unless otherwise noted.)

MAX

to T

MAX

-0.1 0.001 0.1

to T

MAX

-2 2

-0.1 0.001 0.1

to T

to T to T

MAX

MAX MAX

-2 2

-1 1

to T

MAX

-5 5

-1 1

to T

MAX

-5 5

-300 300

to T

MAX

-500 500

-1 1

to T

MAX

-100 100

0.8V

180 250

400

160 250

400

80 200

300

MAX354/MAX355

UNITSMIN TYP MAXSYMBOLPARAMETER

nA-5 0.01 5 µA-2 2

µA

V2.4V VTA= T

µAVA= VEN= 0.8V

V±4.5 ±18Power-Supply Range

µA

ns ns50 100t

pC80V

dB100V

VEN= 2.4V, f = 100kHz,

Crosstalk Between Channels dB92

GEN

= 1V

, RL= 1kΩ,

p-p

TA= +25°C

Figure 6

Logic Input Capacitance f = 1MHz, Figure 7 TA= +25°C NO-Off Capacitance

NO(OFF)

f = 1MHz, VEN= VD= 0V

TA= +25°C

_______________________________________________________________________________________ 3

pF pF2.5C pF1.6C

Fault-Protected Analog Multiplexers

ELECTRICAL CHARACTERISTICS (continued)

(V+ = +15V, V- = -15V, GND = 0V, VAH= V

= 2.4V, VAL= V

ENH

= 0.8V, TA= T

ENL

MIN

to T

, unless otherwise noted.)

MAX

CONDITIONS

DYNAMIC (cont’d)

COM-Off Capacitance pF

COM-On Capacitance pF

Setting Time (Note 5)

COM(OFF)

COM(ON)

SETT

f = 1MHz, Figure 7,

VEN= VD= 0V

f = 1MHz, Figure 7,

VEN= VD= 0V

0.1%

0.01%

MAX354 MAX355 MAX354 MAX355

TA= +25°C

5 28 14

2.5

Note 1: When the analog signal exceeds +13.5V or -13.5V, the blocking action of Maxim’s gate structure goes into operation. Only

leakage currents flow, and the channel on-resistance rises to infinity (see

Typical Operating Characteristics

Note 2: Electrical characteristics such as on-resistance will change when power supplies other than ±15V are used. Note 3: ∆R

MAX354/MAX355

= R

ON(MAX)

- R

ON(MIN)

Note 4: Leakage parameters are 100% tested at maximum rated hot operating temperature, and guaranteed by correlation at +25°C. Note 5: Guaranteed by design.

__________________________________________Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

ON-RESISTANCE vs. ANALOG VOLTAGE



100

(MΩ)

0.1

0.01

0.001

0.0001

-15 15

V+ = +5V V- = -5V

V+ = +15V V- = -15V

-10 -5 10

ANALOG VOLTAGE (V)



OFF LEAKAGE vs. TEMPERATURE

100

V+ = +15V V- = -15V

= ±10V

NO_

OFF LEAKAGE (nA)

0.1

0.01

= 10V

COM_

-75 75 100 125

-50 -25 50

TEMPERATURE (°C)

COM(OFF)

NO(OFF)

2000 1800

MAX354/5-1a

1600 1400 1200

(Ω)

1000

MAX354-3

ON LEAKAGE (nA)

0.01

ON-RESISTANCE vs. ANALOG VOLTAGE

800

V+ = +15V

600

V- = -15V

400 200

-15 15

-10 -5 10 ANALOG VOLTAGE (V)

ON LEAKAGE vs. TEMPERATURE

100

V+ = +15V V- = -15V

= ±10V

COM_

0.1

-75 75 100 125

-50 -25 50



V+ = +5V V- = -5V

V+ = +10V V- = -10V



TEMPERATURE (°C)

700

MAX354/5-1b

600

500

(Ω)

400

300



200

100

-10 -5 10

200

MAX354-4

150 100

(pC)

-50

-100

-150

-200

-10 5 10

4 _______________________________________________________________________________________

ON-RESISTANCE vs.

AND TEMPERATURE

COM

V+ = +15V V- = -15V

COM

CHARGE INJECTION vs. V

V+ = +15V V- = -15V



-5 V

COM

A: +125°C B: +85°C C: +70°C D: +25°C

(V)



(V)

UNITSMIN TYP MAXSYMBOLPARAMETER

µs

MAX354/5-2

A B

C D

COM

MAX354-5

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