MAX328C/D - Hytronics

General Description

The MAX328/MA329 are monolithic CMOS analog multi-

plexers. The MAX328 is a single-ended, 1-of-8 device,

and the MAX329 is a differential, 2-of-8 device.

Designed to provide the lowest possible on- and off-

leakages, these multiplexers switch signals from high

source impedance, providing the mux operates into a

high-input-impedance op amp or A/D converter. The

MAX328/MAX329 are pin-for-pin replacements for the

popular DG508/DG509 in these applications.

Adding an external 40kΩresistor to each input makes

the MAX328/MAX329 an excellent fault-tolerant multi-

plexer. Low leakage (less than 1pA at +25°C) and

2.5kΩon-resistance allow the circuit to sustain 110V

AC faults indefinitely while maintaining an error of less

than 40nV for normal signals (i.e., 1pA times 40kΩ).

The MAX328/MAX329 work equally well with a single

supply of 10V to 30V or dual supplies of ±5V to ±18V.

They also perform well with unbalanced combinations of

supply voltage, such as +12V and -5V or +5V and -15V.

Low power dissipation (1.9mW with ±15V supplies)

allows use in portable applications.

Applications

Control Systems

Data Logging Systems

Aircraft Heads-Up Displays

Data-Acquisition Systems

Signal Routing

Features

♦Ultra-Low Off- and On-Leakage: 1pA Typ

♦Bidirectional Operation (Use as Mux or Demux)

♦TTL and CMOS Logic Compatibility

♦Analog Signal Range Includes Power-Supply Rails

♦Switching Speeds Less Than 1.5µs

♦Pin Compatible with DG508/DG509 and

MAX358/MAX359

♦Latchup Proof Construction

MAX328/MAX329

Ultra-Low Leakage Monolithic CMOS

Analog Multiplexers

________________________________________________________________ Maxim Integrated Products 1

A0 A1

GND

V+

TOP VIEW

MAX328

DIP/SO

V-

A0 A1

GND

V+

S1B

S2B

S3B

S4B

MAX329

DIP/SO

V-

S3A

S1A

S2A

S4A

Pin Configurations

Ordering Information

MAX328

V+ V-GND

A0A1A2EN

AMP

+15V -15V

40kΩ

1/2W

40kΩ

1/2W

ANALOG

INPUT

ANALOG

INPUT

DM7493

+15V

N.C.

CLK IN

N.C.

GNDV02

V01

AIN

BIN

V+

EN IN

(MUX ON/OFF CONTROL)

OUT

i BIAS < 1pA

1-OF-8 CHANNEL SEQUENTIAL MUX WITH 120V AC FAULT CAPABILITY

Typical Operating Circuit

19-1006; Rev 2; 9/01

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.

*Contact factory for dice specifications.

**Contact factory for availability. Substrate may be allowed to

float or be connected to V+.

Ordering Information and Pin Configurations continued at

end of data sheet.

PART TEMP RANGE PIN-PACKAGE

MAX328CPE 0°C to +70°C 16 Plastic DIP

MAX328CWE 0°C to +70°C 16 Wide SO

MAX328CJE 0°C to +70°C 16 CERDIP

MAX328C/D 0°C to +70°C Dice*

MAX328EGE -40°C to +85°C 16 QFN

MAX328EPE -40°C to +85°C 16 Plastic DIP

MAX328EWE -40°C to +85°C 16 Wide SO

MAX328EJE -40°C to +85°C 16 CERDIP**

MAX328MJE -55°C to +125°C 16 CERDIP**

MAX328/MAX329

Ultra-Low Leakage Monolithic CMOS

Analog Multiplexers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V+ = +15V, V- = -15V, GND = 0V, TA= +25°C, 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+ ........................................................................................+44V

GND .....................................................................................+25V

Digital Inputs (Note 1), VS, VD............................-2V to (V+ + 2V)

Current (Any Terminal, Except S or D)................................30mA

Continuous Current, S or D

(pulsed at 1ms, 10% duty cycle max) ............................40mA

Operating Temperature Range

MAX328/329 C _ _ ..............................................0°C to +70°C

MAX328/329 E _ _ ...........................................-40°C to +85°C

MAX328/329 M _ _.........................................-55°C to +125°C

Power Dissipation (Package) (Note 1)

16-Pin CERDIP (Note 2) ...............................................900mW

16-Pin Plastic DIP (Note 3)...........................................470mW

16-Pin Wide SO (Note 4) ..............................................750mW

16-Pin QFN (Note 5) ...................................................1538mw

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

LIMITS

MAX328M

MAX329M

MAX328C/E

MAX329C/E

PARAMETER SYMBOL TEST CONDITIONS

MIN TYP MAX MIN TYP MAX

UNITS

SWITCH

Analog Signal Range VANALOG ±15 ±15 V

VD = 10V,

IS = 100µA 1.5 2.5 1.5 3.5

Drain-Source

On-Resistance RDS

(

)

VD = -10V,

IS = 100µA

Seq. each

switch on,

VAL = 0.8V,

VAH = 2.4V 1.0 2.5 1.0 3.5

kΩ

Greatest Change in

Drain-Source On-

Resistance Between

Channels

∆RDS

(

)

RDS(on) =

RDS(ON) Max - RDS(ON) Min

( )

RDS(ON) Ave

22%

VS = 10V, VD = -10V 0.1 ±10 0.1 ±10

Source Off-Leakage

Current (Note 6) IS(OFF) VS = -10V, VD = 10V VEN = 0V 0.3 ±10 0.3 ±10 pA

VD = 10V, VS = -10V 0.3 ±10 0.3 ±10

MAX328 VD = -10V, VS = 10V 1.0 ±10 1.0 ±10

VD = 10V, VS = -10V 0.3 ±10 0.3 ±10

Drain Off-

Leakage

Current (Note 6) MAX329

ID(OFF)

VD = -10V, VS = 10V

VEN = 0V

0.5 ±10 0.5 ±10

VS (all) = VD = 10V 3.0 ±10 3.0 ±10

MAX328 VS (all) = VD = -10V 2.0 ±10 2.0 ±10

VS (all) = VD = 10V 1.5 ±10 1.5 ±10

Drain On-

Leakage

Current (Note 6) MAX329

ID(ON)

VS (all) = VD = -10V

Seq. each

switch on,

VAL = 0.8V,

VAH = 2.4V 1.0 ±10 1.0 ±10

Note 1: All leads soldered or welded to PC board.

Note 2: Derate 12mW/°C above +75°C.

Note 3: Derate 6.3mW/°C above +75°C.

Note 4: Derate 10mW/°C above +75°C.

Note 5: Derate 19.2mW/°C above +75°C.

MAX328/MAX329

Ultra-Low Leakage Monolithic CMOS

Analog Multiplexers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V+ = +15V, V- = -15V, GND = 0V, TA= +25°C, unless otherwise noted.)

LIMITS

MAX328M

MAX329M

MAX328C/E

MAX329C/E

PARAMETER SYMBOL TEST CONDITIONS

MIN TYP MAX MIN TYP MAX

UNITS

INPUT

VA = 2.4V 0.001 ±1 0.001 ±1

Address Input Current,

Input Voltage High IAH VA = 15V 0.001 ±1 0.001 ±1 µA

VEN = 2.4V 0.001 ±1 0.001 ±1

Address Input Current,

Input Voltage Low IAL VEN = 0V

All

VA = 0V 0.001 ±1 0.001 ±1 µA

DYNAMIC

Switching Time of

Multiplexer tTRANSITION See Figure 1 1.0 1.5 µs

Break-Before-Make

Interval tOPEN See Figure 2 0.2 0.2 µs

Enable Turn-On Time tON

(

)

See Figure 3 1.0 1.5 µs

Enable Turn-Off Time tOFF

(

)

See Figure 3 0.7 1.0 µs

Off-Isolation OIRR VEN = 0V, RL = 1kΩ, CL = 15pF,

VS = 7VRMS, f = 500kHz 84 84 dB

Source Off-Capacitance CS

(

OFF

)

VS = 0V VEN = 0V,

f = 1MHz 1.8 1.8 pF

MAX328 8.0 8.0

Drain Off-

Capacitance MAX329 CD

(

OFF

)

VD = 0V VEN = 0V,

f = 1MHz 4.0 4.0 pF

VA = +10V 1 1

VA = 0V 2 5 2 5

Charge Injection (Note 8) Q(INJ)

VA = -10V 4 4

SUPPLY

Positive Supply Current I+ VEN = 2.4V VA = 0V/5V 4.5 200 4.5 200 µA

Negative Supply Current I- VEN = 2.4V VA = 0V/5V 1 -100 1 -100 µA

Power-Supply Range for

Continuous Operation

(Note 7)

VOP ±5 ±18 ±5 ±18 V

Note 6: All leakage parameters are 100% tested at maximum rated operating temperature, i.e., +70°C, +85°C, +125°C, and guaran-

teed by correlation at +25°C.

Note 7: Electrical characteristics, such as On-Resistance, change when power supplies other than ±15V are used. Power-supply

range is a design characteristic, not production tested.

Note 8: Guaranteed by design.

Typical values are for DESIGN AID ONLY, not guaranteed or subject to production testing.

MAX328/MAX329

Ultra-Low Leakage Monolithic CMOS

Analog Multiplexers

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (Over Temperature)

(V+ = +15V, V- = -15V, GND = 0V, TA= TMIN to TMAX, unless otherwise noted.)

LIMITS

MAX328M

MAX329M

MAX328C/E

MAX329C/E

PARAMETER SYMBOL TEST CONDITIONS

MIN TYP MAX MIN TYP MAX

UNITS

SWITCH

Analog Signal Range VANALOG ±15 ±15 V

VD = 10V,

IS = 100µA 2.2 4 1.9 5

Drain-Source

On-Resistance RDS

(

)

VD = -10V,

IS = 100µA

Seq. each

switch on,

VAL = 0.8V,

VAH = 2.4V 1.5 4 1.2 5

kΩ

VS = 10V, VD = -10V ±5 ±5

Source Off-

Leakage Current (Note 9) IS(OFF) VS = -10V, VD = 10V VEN = 0V ±5 ±5 nA

VD = 10V, VS = -10V ±20 ±20

MAX328 VD = -10V, VS = 10V ±20 ±20

VD = 10V, VS = -10V ±10 ±10

Drain Off-

Leakage

Current (Note 9) MAX329

ID(OFF)

VD = -10V, VS = 10V

VEN = 0V

±10 ±10

VS (all) = VD = 10V ±20 ±20

MAX328 VS (all) = VD = -10V ±20 ±20

VS (all) = VD = 10V ±10 ±10

Drain On-

Leakage

Current (Note 9) MAX329

ID(ON)

VS (all) = VD = -10V

Seq. each

switch on,

VAL = 0.8V,

VAH = 2.4V ±10 ±10

INPUT

VA = 2.4V 0.01 ±1 0.01 ±1

Address Input Current,

Input Voltage High IAH VA = 15V 0.01 ±1 0.01 ±1 µA

VEN = 2.4V 0.01 ±1 0.01 ±1

Address Input Current,

Input Voltage Low IAL VEN = 0V

All

VA = 0V 0.01 ±1 0.01 ±1 µA

Note 9: Leakage parameters are 100% tested at maximum rated operating temperature, i.e., +70°C, etc.

MAX328/MAX329

Ultra-Low Leakage Monolithic CMOS

Analog Multiplexers

_______________________________________________________________________________________ 5

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

RDS(ON) vs. ANALOG INPUT

FOR DUAL SUPPLIES

MAX328/MAX329 toc01

ANALOG INPUT (V)

RDS(ON) (kΩ)

1050-5-10

-15 15

±5V SUPPLIES

±15V SUPPLIES

RDS(ON) vs. ANALOG INPUT

FOR SINGLE SUPPLY

MAX328/MAX329 toc02

ANALOG INPUT (V)

RDS(ON) (kΩ)

105

015

WITH +15V SUPPLY

IS(OFF) vs. TEMPERATURE

MAX328/MAX329 toc03

TEMPERATURE (°C)

LEAKAGE (nA)

105856545255-15-35

0.001

0.01

0.1

1.0

10.0

0.0001

-55 125

V+ = 15V

V- = 15V

MAX328/

MAX329

ID(ON), ID(OFF) vs. TEMPERATURE

MAX328/MAX329 toc04

TEMPERATURE (°C)

LEAKAGE (nA)

105856545255-15-35

0.01

0.1

1.0

100

0.001

-55 125

V+ = 15V

V- = 15V

MAX328

MAX328/MAX329

Ultra-Low Leakage Monolithic CMOS

Analog Multiplexers

6 _______________________________________________________________________________________

MAX328 MAX329

DIP/SO QFN DIP/SO QFN

NAME FUNCTION

1, 15, 16 15, 14, 13 ——A0, A2, A1 Address Input

——1, 16 15, 14 A0, A1 Address Input

2 16 2 16 EN Enable

3 1 3 1 V- Negative-Supply Voltage Input

4–72–5——S1–S4 Analog Inputs—Bidirectional

——4–72–5 S1A–S4A Analog Inputs—Bidirectional

86—— D Analog Outputs—Bidirectional

——8, 9 6, 7 DA, DB Analog Outputs—Bidirectional

9–12 7–10 ——S8–S5 Analog Inputs—Bidirectional

——10–13 8–11 S4B–S1B Analog Inputs—Bidirectional

13 11 14 12 V+ Positive-Supply Voltage Input

14 12 15 13 GND Ground

Pin Description

Truth Table—MAX328

A2A1A0EN ON

SWITCH

X X X 0 None

00001

00112

01013

01114

10015

10116

11017

11118

Truth Table—MAX329

A1A0EN ON

SWITCH

X X 0 None

0011

0112

1013

1114

Note: Logic “0” = VAL ≤0.8V, Logic “1” = VAH ≥2.4V

MAX328/MAX329

Ultra-Low Leakage Monolithic CMOS

Analog Multiplexers

_______________________________________________________________________________________ 7

MAX328

A2+5V

2.4V

VOUT

OUT

S2–S7

GND

1kΩ

50Ω

12.5pF

VAH = 3.0V

tOPEN

50%50%

OUTPUT

ADDRESS

DRIVE (VA)

Figure 2. Break-Before-Make Delay (tOPEN)

MAX328

A2S1

OUT

S2–S7

GND

1kΩ

50Ω

12.5pF

+10V

50%

90%

tOFF(EN)

tON(EN)

OUTPUT

ENABLE DRIVE

VAH = 3.0V

Figure 3. Enable Delay (tON(EN), tOFF(EN))

MAX328

A2±10V

-10V

+10V

50%

90%

10V

+VAH

VAH = 3.0V

OUTPUT A

OUT

S2–S7

GND

10MΩ

50ΩPROBE

14pF

ADDRESS

DRIVE (VA)

Figure 1. Access Time vs. Logic Level (High)

MAX328/MAX329

Ultra-Low Leakage Monolithic CMOS

Analog Multiplexers

8 _______________________________________________________________________________________

Applications Information

Figure 4 is a typical circuit for converting the

MAX328/MAX329 into a fault-tolerant mux. In this

application, the internal diodes limit the voltage at the

MAX328 input to ±15.7V (±15V supplies). No external

diodes need to be added with the MAX328/MAX329,

unlike conventional multiplexers requiring external

diodes.

The resistors, R, need to be 39kΩor higher to limit the

power dissipation in the resistor when a 120V AC fault

occurs (i.e., power dissipation is (120-16)2/39kΩor

0.28W. This is why a 1/2/W resistor is needed). The circuit

withstands an indefinite fault to a 120V AC line with no

damage to any component.

In addition to allowing fault-protection, the guaranteed

low leakage of the MAX328/MAX329 also reduces signal

errors. The circuit in Figure 4 produces an error voltage of

10pA (max leakage) x 39kΩor 0.39µV at room tempera-

ture and 39µV at +125°C. Therefore, for 10V signals, the

MAX328/MAX329 allows 17-bit resolution (38µV = 1LSB)

over the full temperature range.

S8 D

V+

GND

V-

15 16 1 2

A2 A1 A0 EN

0.104”

(2.64mm)

0.118”

(2.90mm)

0.104”

(2.64mm)

0.118”

(2.90mm)

ENA0A1

2116

S4A

S3A

S2A

S1A

V-

DB DA

S4B

S3B

S2B

S1B

V+

GND

MAX328

MAX329

Chip Topographies

A0A1

MAX328

MAX329

VOUT

1µF

-15V

1µF

+15V

R = 39kΩ 1/2W

Figure 4. Fault-Tolerant MUX (indefinitely withstands 120V AC

fault voltages)

MAX328/MAX329

Ultra-Low Leakage Monolithic CMOS

Analog Multiplexers

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9

Ordering Information (continued)

*Contact factory for dice specifications.

**Contact factory for availability. Substrate may be allowed to

float or be connected to V+.

PART TEMP RANGE PIN-PACKAGE

MAX329CPE 0°C to +70°C 16 Plastic DIP

MAX329CWE 0°C to +70°C 16 Wide SO

MAX329CJE 0°C to +70°C 16 CERDIP

MAX329C/D 0°C to +70°C Dice*

MAX329EGE -40°C to +85°C 16 QFN

MAX329EPE -40°C to +85°C 16 Plastic DIP

MAX329EWE -40°C to +85°C 16 Wide SO

MAX329EJE -40°C to +85°C 16 CERDIP**

MAX329MJE -55°C to +125°C 16 CERDIP**

16 EN

15 A0

14 A1

13 A2

10 S5

11 V+

12 GND

9S6

2S1

1V-

3S2

4S3

5S4

8S7

MAX328

LOGIC

16 EN

15 A0

14 A1

13 GND

10 S2B

11 S1B

12 V+

9 S3B

2S1A

1V-

3S2A

4S3A

5S4A

6DA

8S4B

MAX329

LOGIC

TOP VIEW

Pin Configurations (continued)

Package Information

For the latest package outline information, go to

www.maxim-ic.com/packages.

ENGLISH • ???? • ??? • ???

WHAT'S NEW

PRODUCTS

SOLUTIONS

DESIGN

APPNOTES

SUPPORT

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COMPANY

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MAX328

Part Number Table

Notes:

See the MAX328 QuickView Data Sheet for further information on this product family or download the

MAX328 full data sheet (PDF, 768kB).

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.2.

Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within

one business day.

Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: See

full data sheet or Part Naming Conventions.

* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the

product uses.

Part Number

Free

Sample

Buy

Direct

Package:

TYPE PINS SIZE

DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?

Materials Analysis

MAX328CJE

Ceramic DIP;16 pin;.300"

Dwg: 21-0045A (PDF)

Use pkgcode/variation: J16-3*

0C to +70C

RoHS/Lead-Free: No

Materials Analysis

MAX328EJE

Ceramic DIP;16 pin;.300"

Dwg: 21-0045A (PDF)

Use pkgcode/variation: J16-3*

-40C to +85C

RoHS/Lead-Free: No

Materials Analysis

MAX328MJE

Ceramic DIP;16 pin;.300"

Dwg: 21-0045A (PDF)

Use pkgcode/variation: J16-3*

-55C to +125C

RoHS/Lead-Free: No

Materials Analysis

MAX328C/D

RoHS/Lead-Free: No

MAX328CPE+

PDIP;16 pin;.300"

Dwg: 21-0043D (PDF)

Use pkgcode/variation: P16+2*

0C to +70C

RoHS/Lead-Free: Yes

Materials Analysis

MAX328EPE+

PDIP;16 pin;.300"

Dwg: 21-0043D (PDF)

Use pkgcode/variation: P16+2*

-40C to +85C

RoHS/Lead-Free: Yes

Materials Analysis

MAX328CPE

PDIP;16 pin;.300"

Dwg: 21-0043D (PDF)

Use pkgcode/variation: P16-2*

0C to +70C

RoHS/Lead-Free: No

Materials Analysis

MAX328EPE

PDIP;16 pin;.300"

Dwg: 21-0043D (PDF)

Use pkgcode/variation: P16-2*

-40C to +85C

RoHS/Lead-Free: No

Materials Analysis

MAX328CWE-T

SOIC;16 pin;.300"

Dwg: 21-0042B (PDF)

Use pkgcode/variation: W16-2*

0C to +70C

RoHS/Lead-Free: No

Materials Analysis

MAX328CWE

SOIC;16 pin;.300"

Dwg: 21-0042B (PDF)

Use pkgcode/variation: W16-2*

0C to +70C

RoHS/Lead-Free: No

Materials Analysis

MAX328CWE+T

SOIC;16 pin;.300"

Dwg: 21-0042B (PDF)

Use pkgcode/variation: W16+2*

0C to +70C

RoHS/Lead-Free: Yes

Materials Analysis

MAX328CWE+

SOIC;16 pin;.300"

Dwg: 21-0042B (PDF)

Use pkgcode/variation: W16+2*

0C to +70C

RoHS/Lead-Free: Yes

Materials Analysis

MAX328EWE-T

SOIC;16 pin;.300"

Dwg: 21-0042B (PDF)

Use pkgcode/variation: W16-2*

-40C to +85C

RoHS/Lead-Free: No

Materials Analysis

MAX328EWE

SOIC;16 pin;.300"

Dwg: 21-0042B (PDF)

Use pkgcode/variation: W16-2*

-40C to +85C

RoHS/Lead-Free: No

Materials Analysis

MAX328EWE+

SOIC;16 pin;.300"

Dwg: 21-0042B (PDF)

Use pkgcode/variation: W16+2*

-40C to +85C

RoHS/Lead-Free: Yes

Materials Analysis

MAX328EWE+T

SOIC;16 pin;.300"

Dwg: 21-0042B (PDF)

Use pkgcode/variation: W16+2*

-40C to +85C

RoHS/Lead-Free: Yes

Materials Analysis

MAX328ETE+

THIN QFN;16 pin;5x5x0.8mm

Dwg: 21-0140K (PDF)

Use pkgcode/variation: T1655+2*

-40C to +85C

RoHS/Lead-Free: Yes

Materials Analysis

MAX328ETE+T

THIN QFN;16 pin;5x5x0.8mm

Dwg: 21-0140K (PDF)

Use pkgcode/variation: T1655+2*

-40C to +85C

RoHS/Lead-Free: Yes

Materials Analysis

MAX328ETE

THIN QFN;16 pin;5x5x0.8mm

Dwg: 21-0140K (PDF)

Use pkgcode/variation: T1655-2*

-40C to +85C

RoHS/Lead-Free: No

Materials Analysis

MAX328ETE-T

THIN QFN;16 pin;5x5x0.8mm

Dwg: 21-0140K (PDF)

Use pkgcode/variation: T1655-2*

-40C to +85C

RoHS/Lead-Free: No

Materials Analysis

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