MAXIM MAX308, MAX309 Technical data

_______________General Description

The MAX308/MAX309 precision, monolithic, CMOS analog multiplexers (muxes) offer low on-resistance (less than 100Ω), which is matched to within 5Ω between channels and remains flat over the specified analog signal 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 improvements yield extremely low charge injection (less than 10pC) and guarantee electrostatic discharge protection greater than 2000V.

These muxes operate with a single +5V to +30V supply or bipolar ±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 industrystandard DG408, DG409, DG508A, and DG509A.

________________________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

____________________________Features

♦ Guaranteed On-Resistance Match Between

Channels, <5Ω Max

♦ Low On-Resistance, <100Ω Max ♦ Guaranteed Flat On-Resistance over Specified

Signal Range, 7Ω Max

♦ Guarateed Low Charge Injection, <10pC ♦ NO-Off Leakage Current <5nA at +85°C ♦ COM-Off Leakage Current <20nA at +85°C ♦ ESD Protection >2000V ♦ Plug-In Upgrade for Industry-Standard

DG408/DG409/DG508A/DG509A

♦ Single-Supply Operation (+5V to +30V)

Bipolar-Supply Operation (±5V to ±20V)

♦ Low Power Consumption, <300µW ♦ Rail-to-Rail Signal Handling ♦ TTL/CMOS-Logic Compatible

______________Ordering Information

MAX308/MAX309

Precision, 8-Channel/Dual 4-Channel,

High-Performance, CMOS Analog Multiplexers

________________________________________________________________ Maxim Integrated Products 1

_____________________Pin Configurations/Functional Diagrams/Truth Tables

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

19-0271; Rev 2; 8/02

PART

MAX308CPE

MAX308CSE

MAX308C/D 0°C to +70°C

0°C to +70°C

TEMP RANGE PIN-PACKAGE

16 Plastic DIP

16 Narrow SO

Dice*

Ordering Information continued at end of data sheet.

*Contact factory for dice specifications. **Contact factory for availability.

MAX308EPE -40°C to +85°C 16 Plastic DIP MAX308ESE -40°C to +85°C 16 Narrow SO MAX308EJE -40°C to +85°C 16 CERDIP

MAX308MJE -55°C to +125°C 16 CERDIP**

MAX308CUE 0°C to +70°C 16 TSSOP

MAX308EUE -40°C to +85°C 16 TSSOP

TOP VIEW

V-

NO1

NO2

NO3

NO4

COM

Continued at end of data sheet.

MAX308

DIP/SO/TSSOP

GND

V+

NO5

NO6

NO7

NO8

NO1

NO2

NO3

NO4

NO5

NO6

NO7

NO8

MAX308 8-CHANNEL SINGLE-ENDED MULTIPLEXER

V+ V- GND

CMOS DECODE LOGIC

A2 A1 A0 EN

COM

MAX308/MAX309

Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—Dual Supplies

(V+ = +15V, V- = -15V, GND = 0V, VAH= +2.4V, VAL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted.)

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.

Voltage Referenced to V-

V+ ............................................................................-0.3V, 44V

GND .........................................................................-0.3V, 25V

Digital Inputs, NO, COM (Note 1)...........(V- - 2V) to (V+ + 2V) or

30mA, (whichever occurs first)

Continuous Current (any terminal) ......................................30mA

Peak Current, NO or COM

(pulsed at 1ms, 10% duty cycle max) ..........................100mA

Continuous Power Dissipation (T

= +70°C)

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

Narrow SO (derate 8.70mW/°C above +70°C) ............696mW

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

TSSOP (derate 6.7mW/°C above +70°C) ....................457mW

Operating Temperature Ranges

MAX30_C_ _ .......................................................0°C to +70°C

MAX30_E_ _.....................................................-40°C to +85°C

MAX30_MJE ..................................................-55°C to +125°C

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

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

COM

= ±10V,

= ±10V, sequence each switch on

VNO= +10V, V

COM

= ±10V,

= 0V

COM

= +10V,

= ±10V, V

= 0V

INO= -1.0mA, V

COM

= ±10V

INO= -1.0mA, V

COM

= ±10V (Note 4)

VNO= ±10V, V

COM

= +10V,

= 0V

CONDITIONS

-10 10

COM(ON)

COM-On Leakage Current (Note 5)

-5 5

-0.75 0.02 0.75

-20 20

-10 10

-0.75 0.02 0.75

-10 10

COM(OFF)

COM-Off Leakage Current (Note 5)

-5 5

-0.75 0.02 0.75

-20 20

60 100

-10 10

-0.75 0.02 0.75

-5.0 5.0

NO(OFF)

NO-Off Leakage Current (Note 5)

-2.5 2.5

Ω

125

On-Resistance

1.5 5

Ω

∆R

On-Resistance Matching Between Channels

UNITS

MIN TYP MAX

(Note 2)

SYMBOLPARAMETER

Note 1: Signals on NO, COM, EN, A0, A1, or A2 exceeding V+ or V- are clamped by internal diodes. Limit forward current to

maximum current ratings.

V-15 15

VNO,

COM

Analog Signal Range

INO= -1.0mA, V

COM

= ±5V or 0V

1.8 7

Ω

FLAT

On-Resistance Flatness

(Note 3)

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

-0.5 0.01 0.5TA= +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

MAX309

MAX308

MAX309

MAX308

C, E

SWITCH

MAX308/MAX309

Precision, 8-Channel/Dual 4-Channel,

High-Performance, CMOS Analog Multiplexers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)

(V+ = +15V, V- = -15V, GND = 0V, VAH= +2.4V, VAL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted.)

Off Isolation (Note 6)

dB-75V

ISO

210

Charge Injection (Note 3)

300

150t

OFF(EN)

Enable Turn-Off Time

225

ON(EN)

Enable Turn-On Time

85 150

ns10 40t

OPEN

Break-Before-Make Interval

85 175

µA-1.0 1.0I

Input Current with Input Voltage Low

µA-1.0 1.0I

Input Current with Input Voltage High

µA

-10 10

I-Negative Supply Current

-1 1

I+Positive Supply Current

0.075 0.5

V±5 ±20Power-Supply Range

16 30

µA

UNITS

MIN TYP MAX

(Note 2)

SYMBOLPARAMETER

Crosstalk Between Channels V

-92 dB

Logic Input Capacitance C

8 pF

NO-Off Capacitance C

NO(OFF)

3 pF

COM-Off Capacitance C

COM(OFF)

f = 1MHz, VEN= 0.8V V

COM

= 0V,

Figure 8

COM-On Capacitance C

COM(ON)

f = 1MHz, VEN= 2.4V V

COM

= 0V,

Figure 8

TA= +25°C

VEN= 0V or 2.4V, VA= 0V

TA= +25°C

VA= 2.4V or 15V

TA= T

MIN

to T

MAX

TA= +25°C

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

TA= +25°C

TA= T

MIN

to T

MAX

TA= +25°C

TA= T

MIN

to T

MAX

CONDITIONS

TA= +25°C

VEN= 0V, RL= 1kΩ, f = 100kHz, Figure 6

CL= 1.0nF, V

= 0V, RS= 0Ω, Figure 5

Figure 3

VEN= 2.4V, V

A(ALL)

= 0V or 2.4V

Figure 4

VEN= 2.4V, V

A(ALL)

= 0V or 2.4V

VEN= VA= 0V or 4.5V

VEN= 2.4V, f = 100kHz, V

GEN

= 1V

P-P

= 1kΩ, Figure 7

f = 1MHz

f = 1MHz, VEN= VNO= 0V, Figure 8

MAX308

MAX309

MAX308

MAX309

250

TRANS

Transistion Time

TA= T

MIN

to T

MAX

Figure 2

INPUT

SUPPLY

DYNAMIC

MAX308/MAX309

Precision, 8-Channel/Dual 4-Channel, High-Performance, CMOS Analog Multiplexers

4 _______________________________________________________________________________________

(Note 3)

CONDITIONS

CL= 1.0nF, VNO= 0V, RS= 0Ω

INH

= 2.4V,

INL

= 0V,

NO1

= 5V,

Figure 3 V

INH

= 2.4V,

INL

= 0V,

NO1

= 5V,

Figure 3

NO1

= 8V,

NO8

= 0V, VIN= 2.4V, Figure 2

INO= -1.0mA V

COM

= 3V or 10V

pC210Q

Charge Injection (Note 3)

ns75 300t

OFF(EN)

Enable Turn-Off Time (Note 3)

V012

VNO,

COM

Analog Signal Range

ns100 600t

ON(EN)

Enable Turn-On Time (Note 3)

ns115 450t

TRANS

Transition Time (Note 3)

Ω120 175R

On-Resistance

UNITS

MIN TYP MAX

(Note 2)

SYMBOLPARAMETER

ELECTRICAL CHARACTERISTICS—Single Supply

(V+ = +12V, V- = 0V, GND = 0V, VAH= +2.4V, VAL= +0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted.)

Note 2: The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in

this data sheet.

Note 3: Guaranteed by design. Note 4: ∆R

= R

ON(MAX)

- R

ON(MIN)

On-resistance match between channels and flatness are guaranteed only with specified voltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured at the extremes of the specified analog signal range.

Note 5: Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C. Note 6: Off isolation = 20log V

COM/VNO

, where V

COM

= output and VNO= input to off switch.

TA= +25°C

SWITCH

DYNAMIC

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