Maxim MAX382CPN, MAX382C-D, MAX382MJN, MAX382EWN, MAX382EPN Datasheet

_______________General Description

The MAX382/MAX384 are low-voltage, CMOS, 1-of-8 and dual 4-channel muxes with latchable digital inputs. They feature low-voltage operation from a +2.7V to +16.5V single supply and from ±3V to ±8V dual supplies. Pin compatible with the DG428/DG429, these muxes offer low on-resistance (100Ω max) matched to within 4Ω max between channels. Additional features include off leakage less than 2.5nA at +85°C and guaranteed low charge injection (10pC max). ESD protection is greater than 2000V per Method 3015.7.

________________________Applications

Battery-Operated Systems Audio Signal Routing Low-Voltage Data-Acquisition Systems Sample-and-Hold Circuits Automatic Test Equipment

____________________________Features

♦ Pin-Compatible with Industry-Standard

DG428/DG429, DG528/DG529, MAX368/MAX369

♦ Single-Supply Operation (+2.7V to +16.5V)

Bipolar Supply Operation (±3V to ±8V)

♦ Low Power Consumption (<300µW) ♦ Low On-Resistance, 100Ω max ♦ Guaranteed On-Resistance Match Between

Channels, 4Ω max

♦ Low Leakage, 2.5nA at +85°C ♦ TTL/CMOS-Logic Compatible

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel

Multiplexers with Latchable Inputs

________________________________________________________________

Maxim Integrated Products

1

18 17 16 15 14 13 12

10

1 2 3 4 5 6 7

9

RS A1 A2 GND

V-

EN

A0

WR

TOP VIEW

MAX382

V+ N05 N06

N08

COM

11

8

N07

N04

N03

N02

N01

DIP/SO

LOGIC

18 17 16 15 14 13 12

10

1 2 3 4 5 6 7

9

RS A1 GND V+

V-

EN

A0

WR

MAX384

N01B N02B N03B

COMB

COMA

11

8

N04B

N04A

N03A

N02A

N01A

DIP/SO

LOGIC

__________________________________________________________Pin Configurations

Call toll free 1-800-998-8800 for free samples or literature.

PART

MAX382CPN

MAX382CWN MAX382C/D 0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

18 Plastic DIP 18 Wide SO

Dice* MAX382EPN MAX382EWN -40°C to +85°C

-40°C to +85°C 18 Plastic DIP 18 Wide SO

MAX382EJN MAX382MJN -55°C to +125°C

-40°C to +85°C 18 CERDIP** 18 CERDIP**

19-0396; Rev. 0; 5/95

______________Ordering Information

Ordering Information continued on last page.

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

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel Multiplexers with Latchable Inputs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—Dual Supplies

(V+ = +5V ±10%, V- = -5V ±10%, GND = 0V, V

A_H

= V

ENH

= 2.4V, V

A_L

= V

ENL

= 0.8V, WR = 0V, RS = 2.4V, 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 GND

V+.......................................................................-0.3V to +17V

V-........................................................................+0.3V to -17V

V+ to V-...............................................................-0.3V to +17V

Voltage into Any Terminal (Note 1).........(V- - 2V) to (V+ + 2V) or

30mA (whichever occurs first)

Current into Any Terminal ...................................................30mA

Peak Current, Any Terminal

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

Continuous Power Dissipation (T

A

= +70°C)

Plastic DIP (derate 11.11mW/°C above +70°C) ..........889mW

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

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

Operating Temperature Ranges

MAX38_C_ N.......................................................0°C to +70°C

MAX38_E_ N....................................................-40°C to +85°C

MAX38_MJN..................................................-55°C to +125°C

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

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

V

COM

= ±4.5V,

V

NO

= 4.5V,

V+ = 5.5V, V- = -5.5V

V

COM

= ±4.5V,

V

NO

= 4.5V,

V+ = 5.5V, V- = -5.5V

CONDITIONS

-10 10

I

COM(OFF)

COM-Off Leakage Current (Note 6)

-1.5 1.5

-0.1 0.1

-20 20

-2.5 2.5 nA

-0.2 0.2

Ω

60 100

VV- V+V

COM

, V

NO

Analog Signal Range

-10 10

I

NO(OFF)

NO-Off Leakage Current (Note 6)

-1.0 1.0

nA

-0.1 0.1

13

R

FLAT(ON)

On-Resistance Flatness (Note 5)

125

R

ON

Channel On-Resistance

Ω

4 6

∆R

ON

On-Resistance Matching Between Channels (Note 4)

Ω

10

UNITS

MIN TYP MAX

(Note 2)

SYMBOLPARAMETER

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

MAX384

VNO= ±4.5V, V

COM

= 4.5V,

V+ = 5.5V, V- = -5.5V

MAX382

INO= 1mA, V

COM

= ±3V,

V+ = 5V, V- = -5V

INO= 1mA, V

COM

= ±3.5V

INO= 1mA, V

COM

= ±3.5V,

V+ = 5V, V- = -5V

TA= +25°C

(Note 3)

M

C, E

M

C, E

TA= +25°C

M

TA= +25°C

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

TA= +25°C TA= T

MIN

to T

MAX

C, E

TA= +25°C

Note 1: Signals on any terminal exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings.

V

COM

= ±4.5V,

V

NO

= 4.5V,

-20 20

I

COM(ON)

COM-On Leakage Current (Note 6)

-2.5 2.5

-0.2 0.2

-40 40

-5 5 nA

-0.4 0.4

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

MAX384

MAX382

M

C, E

TA= +25°C

M

C, E

TA= +25°C

±

SWITCH

VEN= VA= 0V/V+, V+ = 5.5V, V- = -5.5V

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel

Multiplexers with Latchable Inputs

_______________________________________________________________________________________ 3

f = 1MHz,

VEN= V

COM

= 0V

f = 1MHz,

VEN= V

COM

= 0V

CONDITIONS

34

C

COM(ON)

COM-On Capacitance pF

54

20

C

COM(OFF)

COM-Off Capacitance pF

40

pF11C

NO(OFF)

NO-Off Capacitance

pF8C

IN

Logic Input Capacitance

dB-92V

CT

Crosstalk Between Channels

dB-75V

ISO

Off Isolation (Note 7)

pC25V

CTE

Charge Injection (Note 3)

ns

250

t

ON(EN)

Enable Turn-On Time

100 150

V2.4V

A_H

, V

ENH

Logic High Input Voltage

ns020t

OPEN

Break-Before-Make Interval

ns100 275t

TRANS

Transition Time

t

H

AX, EN Data Hold Time

V±2.4 ±8V+, V-Power-Supply Range

µA-1 1I+Positive Supply Current

µA-1 1I-Negative Supply Current ns100

UNITS

MIN TYP MAX

(Note 2)

SYMBOLPARAMETER

MAX384

MAX382

MAX384

MAX382

f = 1MHz, VEN= V

COM

= 0V

f = 1MHz

VEN= 2.4V, f = 100kHz, V

GEN

= 1V

p-p

, RL= 1kΩ

Figure 2

VEN= 0V, RL= 1kΩ, f = 100kHz

CL= 100pF, VNO= 0V

Figure 5

Figure 3

TA= +25°C

Figure 1

TA= +25°C

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

TA= +25°C

ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)

(V+ = +5V ±10%, V- = -5V ±10%, GND = 0V, V

A_H

= V

ENH

= 2.4V, V

A_L

= V

ENL

= 0.8V, WR = 0V, RS = 2.4V, TA= T

MIN

to T

MAX

,

unless otherwise noted.)

V0.8V

A_L

, V

ENL

Logic Low Input Voltage TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

µAV

A_H

= 2.4V, V

A_L

= 0.8V

V

A_H

= 2.4V, V

A_L

= 0.8V µA-0.1 0.1I

A_H

, I

ENH

Input Current with Input Voltage High

-0.1 0.1I

A_L

, I

ENL

Input Current with Input Voltage Low

VEN= VA= 0V/V+, V+ = 5.5V, V- = -5.5V

ns

250

t

OFF(EN)

Enable Turn-Off Time

80 150

Figure 3

TA= T

MIN

to T

MAX

TA= +25°C

ns

250

t

ON(WR)

Write Turn-On Time

150

Figure 4

TA= T

MIN

to T

MAX

TA= +25°C

ns

250

t

OFF(RS)

Reset Turn-Off Time

150

Figure 6

TA= T

MIN

to T

MAX

TA= +25°C

ns100t

W

Write Pulse Width Figure 5 TA= +25°C

ns100t

S

AX, EN Data Setup Time Figure 5 TA= +25°C

t

RS

Reset Pulse Width ns100Figure 6, V+ = 5V TA= +25°C

DIGITAL LOGIC INPUT

SUPPLY

DYNAMIC

MINIMUM INPUT TIMING REQUIREMENTS

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel Multiplexers with Latchable Inputs

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—Single +5V Supply

(V+ = +5V ±10%, V- = 0V, GND = 0V, V

A_H

= V

ENH

= 2.4V, V

A_L

= V

ENL

= 0.8V, WR = 0V, RS = 2.4V, TA= T

MIN

to T

MAX

, unless

otherwise noted.)

nsFigure 6, V+ = 5Vt

RS

Reset Pulse Width

SWITCH

TA= T

MIN

to T

MAX

TA= +25°C

INO= 1mA, V

COM

= 3.5V,

V+ = 4.5V

On-Resistance R

ON

280

150 225

Ω

(Note 3)Analog Signal Range V

COM

, V

NO

V- V+ V

PARAMETER SYMBOL

MIN TYP MAX

(Note 2)

UNITSCONDITIONS

SUPPLY

DIGITAL LOGIC INPUT

TA= +25°C

VEN= VA= 0V, V+; V+ = 5.5V; V- = 0V

TA= T

MIN

to T

MAX

VEN= V+, 0V; VA= 0V; V+ = 5.5V; V- = 0V

Input Current with Input Voltage Low

IL, I

ENL

Logic Low Input Voltage VL, V

ENL

0.8

-0.1 0.1

Input Current with Input Voltage High

-1.0 1.0 µA

Negative Supply Current I- -1.0 1.0 µA

Positive Supply Current I+ -1.0 1.0 µA

Power-Supply Range 2.4 15 V

I

GND Supply Current

I

GND

-1.0 1.0

Logic High Input Voltage VH, V

ENH

2.4 V

IH, I

ENH

-0.1 0.1 µAVH= 2.4V, VL= 0.8V

VH= 2.4V, VL= 0.8V µA

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

V

TA= +25°C

C, E

TA= T

MIN

to T

MAX

TA= +25°C

TA= T

MIN

to T

MAX

TA= +25°C

M

TA= +25°C

C, E M

TA= +25°C

INO= 1mA, V

COM

= 3.5V,

V+ = 4.5V

Figure 5

INO= 1mA; V

COM

= 3V, 2V, 1V;

V+ = 5V

MAX382

VNO= 4.5V, V

COM

= 0V,

V+ = 5.5V

MAX384

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

10 16

Ω

On-Resistance Matching Between Channels (Note 4)

∆R

ON

12

10

Ω

AX, EN Data Hold Time t

H

100

On-Resistance Flatness R

FLAT

15 20

-0.1 0.1 nA

-1.0 1.0

NO-Off Leakage Current (Note 8)

I

NO(OFF)

-10 10

100 ns

-0.2 0.2

nA

-2.5 2.5

-20 20

-0.2 0.2

-1.5 1.5

COM-Off Leakage Current (Note 8)

I

COM(OFF)

-10 10

TA= +25°C

C, E M

TA= +25°C

C, E M

MAX382

V

COM

= 4.5V,

V

NO

= 0V,

V+ = 5.5V

MAX384

TA= T

MIN

to T

MAX

TA= T

MIN

to T

MAX

-0.4 0.4

V

COM

= 4.5V,

V

NO

= 0V,

V+ = 5.5V

nA

-5 5

-40 40

-0.2 0.2

-2.5 2.5

COM-On Leakage Current (Note 8)

I

COM(ON)

-20 20

V

COM

= 4.5V,

V

NO

= 4.5V,

V+ = 5.5V

SWITCH

DIGITAL LOGIC INPUT

SUPPLY

pC

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel

Multiplexers with Latchable Inputs

_______________________________________________________________________________________ 5

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

ON

= RON(max) - RON(min).

Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal

ranges, i.e., V

NO

= 3V to 0V and 0V to -3V.

Note 6: Leakage parameters are 100% tested at maximum rated hot operating temperature, and guaranteed by correlation at +25°C. Note 7: Worst-case isolation is on channel 4 because of its proximity to the COM pin. Off isolation = 20log V

COM/VNO

, V

COM

= output, VNO= input to off switch.

Note 8: Leakage testing at single supply is guaranteed by correlation testing with dual supplies.

ns

CONDITIONS

275

t

ON(EN)

Enable Turn-On Time (Note 3)

pC1.5 5Charge Injection (Note 3)

t

OPEN

Break-Before-Make Interval

ns90 280t

TRANS

Transition Time

UNITS

MIN TYP MAX

(Note 2)

SYMBOLPARAMETER

130 200

Figure 3

TA= T

MIN

to T

MAX

TA= +25°C

Figure 2 (Note 3)

Figure 7, CL= 100pF, VNO= 0V

TA= +25°C

Figure 1, VNO= 3V

TA= +25°C

ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)

(V+ = +5V ±10%, V- = 0V, GND = 0V, V

A_H

= V

ENH

= 2.4V, V

A_L

= V

ENL

= 0.8V, WR = 0V, RS = 2.4V, TA= T

MIN

to T

MAX

, unless

otherwise noted.)

ELECTRICAL CHARACTERISTICS—Single +3V Supply

(V+ = +3V ±10%, V- = 0V, GND = 0V, V

A_H

= V

ENH

= 2.4V, V

A_L

= V

ENL

= 0.8V, WR = 0V, RS = 2.4V, TA= T

MIN

to T

MAX

, unless

otherwise noted.)

ns

CONDITIONS

Enable Turn-Off Time (Note 3)

pC15V

CTE

Charge Injection (Note 3)

230 375

VV- V+V

ANALOG

Analog Signal Range

UNITS

MIN TYP MAX

(Note 2)

SYMBOLPARAMETER

Figure 3, V

INH

= 2.4V,

V

INL

= 0V, V

N01

= 1.5V

Figure 7, CL= 100pF, VNO= 0V

TA= +25°C

(Note 3)

TA= +25°C

Ω

425

R

ON

On-Resistance

INO= 1mA, V

COM

= 1.5V,

V+ = 3V

TA= T

MIN

to T

MAX

ns230 575t

TRANS

Transition Time (Note 3)

Figure 1, VIN= 2.4V, V

N01

= 1.5V, V

N08

= 0V

TA= +25°C

75 400t

OFF(EN)

TA= +25°C

ns200 500t

ON(EN)

Enable Turn-On Time (Note 3)

Figure 3, V

INH

= 2.4V,

V

INL

= 0V, V

N01

= 1.5V

TA= +25°C

ns540

ns

275

t

OFF(EN)

Enable Turn-Off Time (Note 3)

80 200

Figure 3

TA= T

MIN

to T

MAX

TA= +25°C

ns200 500t

ON(WR)

TA= +25°CWrite Turn-On Time (Note 3) Figure 4

ns75 400t

OFF(RS)

TA= +25°CReset Turn-Off Time (Note 3) Figure 4

SWITCH

DYNAMIC

ns

275

t

ON(WR)

Write Turn-On Time (Note 3)

200

Figure 4

TA= T

MIN

to T

MAX

TA= +25°C

ns

275

t

OFF(RS)

Reset Turn-Off Time (Note 3)

200

Figure 4

TA= T

MIN

to T

MAX

TA= +25°C

V

CTE

DYNAMIC

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel Multiplexers with Latchable Inputs

6 _______________________________________________________________________________________

__________________________________________Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

110

30

-5 -3 1

ON-RESISTANCE vs. V

COM 

(DUAL SUPPLIES)

50

90

MAX398/9 TOC1

V

COM

(V)

R

ON

(Ω)

-1 3

70

100

40

80

60

5-4 0-2 2 4

V± = ±5V

V± = ±3V

110

30

-5 -3 1

ON-RESISTANCE vs. V

COM 

AND TEMPERATURE

(DUAL SUPPLIES)

50

90

MAX398/9 TOC2

V

COM

(V)

R

ON

(Ω)

-1 3

70

100

40

80

60

5-4 0-2 2 4

V+ = 5V V- = -5V

TA = +125°C TA = +85°C

TA = +25°C

TA = -55°C

300

50

02

ON-RESISTANCE vs. V

COM



(SINGLE SUPPLY)

100

200

MAX398/9 TOC3

V

COM

(V)

R

ON

(Ω)

4

150

250

275

225

75

175

125

153

V+ = 3V

V- = 0V

V+ = 5V

180

02

ON-RESISTANCE vs. V

COM



AND TEMPERATURE

(SINGLE SUPPLY)

100

MAX398/9 TOC4

V

COM

(V)

R

ON

(Ω)

4

60

140

160

120

80

40

153

T

A

= +25°C

TA = -55°C

TA = +85°C

TA = +125°C

V+ = 5V V- = 0V

-5 -3 1



CHARGE INJECTION vs. V

COM

-5

5

MAX398/9 TOC7

V

COM

(V)

Q

j

(pC)

-1 305-4 0-2 2 4

V+ = 5V V- = -5V

V+ = 5V V- = 0V

0.1

OFF-LEAKAGE vs.

TEMPERATURE

1000

MAX398/9 TOC5

TEMPERATURE (°C)

OFF-LEAKAGE (pA)

10

1

100

-50 12525-25 0 7550 100

V+ = 5.5V V- = -5.5V

0.1

ON-LEAKAGE vs.

TEMPERATURE

1000

10,000

MAX398/9 TOC6

TEMPERATURE (°C)

ON-LEAKAGE (pA)

10

1

100

-50 12525-25 0 7550 100

V+ = 5.5V V- = -5.5V

0.1

SUPPLY CURRENT vs.

TEMPERATURE



10

MAX398/9 TOC8

TEMPERATURE (°C)

I+, I- (nA)

1

-50 12525-25 0 7550 100

V+ = 5V V- = -5V V

EN

= VA = 0V, 5V

I+

I-

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel

Multiplexers with Latchable Inputs

_______________________________________________________________________________________ 7

______________________________________________________________Pin Description

2, 17

MAX382 MAX384

NAME* FUNCTION

1 WR WRITE Logic Input

—

1

A0, A1 Address Logic Inputs (see

Truth Tables

at end of data sheet)

3 3 EN Enable Logic Input (see

Truth Tables

at end of data sheet)

4 4 V- Negative Supply Voltage Input. Connect to GND for single-supply operation.

5–8 — NO1–NO4 Analog Signal Inputs—bidirectional

— 5–8 NO1A–NO4A Analog Signal Inputs—bidirectional

9 — COM Analog Signal Output—bidirectional

— 9, 10 COMA, COMB Analog Signal Outputs—bidirectional

10–13 — NO8–NO5 Analog Signal Inputs—bidirectional

— 11–14 NO4B–NO1B Analog Signal Inputs—bidirectional 14 15 V+ Positive Supply Voltage Input 15 16 GND Ground

2, 16, 17 A0, A2, A1 Address Logic Inputs (see

Truth Tables

at end of data sheet)—

18 18 RS RESET Logic Input

__________Applications Information

The internal structures of the MAX382/MAX384 include translators for the A2/A1/EN/WR/RS digital inputs, latches, and a decode section for channel selection (see

Truth Tables

). The analog-signal switches consist of

parallel combinations of N and P MOSFETs. WRITE (WR) and RESET (RS) strobes are provided for

interfacing with µP-bus lines, alleviating the need for the µP to provide constant address inputs to the mux to hold a particular channel (Figures 2–7).

When the WR strobe is in the low state (less than 0.8V) and the RS strobe is in the high state (greater than

2.4V), the muxes are in the transparent mode—they act similar to nonlatching devices, such as the MAX398/MAX399.

When the WR goes high, the previous BCD address input is latched and held in that state indefinitely.

RS turns off all channels when it is low. All switches stay off until RS and EN are high and WR is low.

The MAX382/MAX384 work with both single and dual supplies and function over the +2.4V to +16V singlesupply range. For example, with a single +5V power supply, analog signals in the 0V to +5V range can be switched normally. If negative signals around 0V are expected, a negative supply is needed.

The EN latch allows all switches to be turned off under program control. This is useful when two or more are cascaded to build 16-line and larger analog-signal multiplexers.

*Analog inputs and outputs are names of convenience only. Inputs and outputs are identical and interchangeable.

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel Multiplexers with Latchable Inputs

8 _______________________________________________________________________________________

______________________________________________Test Circuits/Timing Diagrams

50%

t

TRANS

tR < 20ns t

F

< 20ns

V

OUT

+3V

0V

V

NO_

0V

V

NO_

LOGIC INPUT

SWITCH OUTPUT

+5V

V

OUT

-5V

GND WR

V+

EN

V-

RS

A0 A1 A2

NO1

+2.4V

NO2–NO7

NO8

COM

±3V

3V

50Ω

MAX382

300Ω

35pF

A0

+5V

V

OUT

-5V

GND

V+

V-

A1

NO1B

NO1A–NO4A

COMA, N02B–N03B

NO4B

COMB

50Ω

MAX384

300Ω

35pF

90%

t

TRANS

±

±3V

3V

±

EN

RS

WR



Figure 1. Transition Time

GNDWR

EN

35pF

V

OUT

-5V

*SIMILAR CONNECTION FOR MAX384

V-

V+

V

OUT

0V

V

A

t

OPEN

50% 50%

V

AH

= +3V

+5V

A2

RS

1k

+5V

A1 A0

N02–

N08

COM

V

A

N01



MAX382*

+2.4V

50Ω

Figure 2. Break-Before-Make Interval (t

OPEN

)

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel

Multiplexers with Latchable Inputs

_______________________________________________________________________________________ 9

GND

WR

35pF

V

OUT

-5V

*SIMILAR CONNECTION FOR MAX384

V-

V+

V

OUT

+3V

+1.5V

0V

V

WR

t

ON

(WR)

50%

0.2V

O

+5V

EN

RS

1k

+5V

A0, A1, (A2)

ALL

N0_

COM,

COMB

LOGIC INPUT

N01 or

N01B

+2.4V



MAX382*

+2.4V

DEVICE MUST BE RESET PRIOR TO APPLYING WR PULSE



Figure 4. Write Turn-On Time (t

ON(WR)

)

GNDWR

EN

35pF

V

OUT

-5V

*SIMILAR CONNECTION FOR MAX384

V-

V+

V

OUT

0.9 V

O

0V

V

EN

t

ON(EN)

50%

V

AH

= +3V

+5V

A2

RS

1k

+10V

A1 A0

N02–

N03

COM,

COMB

V

EN

N01



MAX382*

+2.4V

t

OFF(EN)

50%

50Ω

Figure 3. Enable Delay (t

ON(EN)

, t

OFF(EN)

)

0V

A0, A1, (A2)

EN

3V 0V

3V

WR

t

W

50%

20%

80%

t

S

t

H

V

O

SWITCH

OUTPUT

3V 0V

RS

50%

80%

t

RS

t

OFF

(RS)

Figure 5. Write, Setup, and Hold Timing (tW, t

S, tH

)

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel Multiplexers with Latchable Inputs

10 ______________________________________________________________________________________

V

GEN

GND WR

C

L

100pF

V

OUT

-5V

V-

V+

R

GEN

V

OUT

EN

ON

OFF

∆V

OUT

∆V

OUT

IS THE MEASURED VOLTAGE ERROR DUE TO

CHARGE INJECTION. THE CHARGE IN COULOMBS IS Q = C

L

x ∆V

O

+5V

N0_

IN

+2.4V

3V

A0, A1, (A2)

COM

RS



MAX382 MAX384

Figure 7. Charge Injection (V

CTE

)

GND

WR

35pF

V

OUT

-5V

V-

V+

V

O

V

OUT

+3V

+1.5V

0V

RS

t

OFF

(RS)

50%

0.8V

O

+5V

EN

RS

1k

+5V

A0, A1, (A2)

N01–

N08

COM, COMB

LOGIC INPUT

N01+2.4V



MAX382

Figure 6. Reset Turn-Off Time (t

OFF(RS)

)

Operation with Supply Voltages

Other than ±5V

Using supply voltages less than ±5V reduces the analog signal range. The MAX382/MAX384 muxes operate with ±3V to ±8V bipolar supplies or with a +2.7V to +16.5V single supply. Connect V- to GND when operating with a single supply. Both devices can also operate with unbalanced supplies, such as +10V and -5V. The

Typical

Operating Characteristics

graphs show typical on-resistance with ±3V, ±5V, +3V and +5V supplies. (Switching times increase by a factor of two or more for operation at +5V or below.)

Overvoltage Protection

Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings can cause permanent damage to the devices. Always sequence V+ on first, then V-, followed by the logic inputs, NO, or COM. If power-supply sequencing is not possible, add two small signal diodes (D1, D2) in series with supply pins for overvoltage protection (Figure 8). Adding diodes reduces the analog signal range to one diode drop below V+ and one diode drop above V-, but does not affect the devices’ low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between V+ and V- should not exceed 17V. These protection diodes are not recommended when using a single supply.

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel

Multiplexers with Latchable Inputs

______________________________________________________________________________________ 11

DECODERS / DRIVERS

COMA

NO1A NO2A NO3A NO4A

V+ V- GND

COMB

NO1B NO2B NO3B NO4B

DECODERS / DRIVERS

LATCHES

COM

NO1 NO2 NO3 NO4

NO5 NO6 NO7 NO8

WR

A1A2 A0 EN

V+ V- GND

RS

MAX384 DIFFERENTIAL 4-CHANNEL MULTIPLEXER

MAX382 8-CHANNEL SINGLE-ENDED MULTIPLEXER

LATCHES

WR

A1 A0 EN

RS

A1 A0 EN

ON SWITCH

Maintains previous switch condition

NONE (latches cleared)

NONE 1 2 3 4

X 0 0 1 1

X 0 1 0 1

0 1 1 1 1

0 0 0 0 0

1 1 1 1 1

XXX 1

XXXX0

WR RS

LOGIC "0" = VAL ≤ 0.8V, LOGIC "1" VAH ≥ 2.4V

Latching

Reset

Transparent Operation

A1A2 A0 EN

ON SWITCH

Maintains previous switch condition

NONE (latches cleared)

NONE 1 2 3 4 5 6 7 8

X 0 0 1 1 0 0 1 1

X 0 0 0 0 1 1 1 1

X 0 1 0 1 0 1 0 1

0 1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0 0

1 1 1 1 1 1 1 1 1

XXXX1

XX XXX0

WR RS

Latching

Reset

Transparent Operation

__________________________________________Functional Diagrams/Truth Tables

COM

V-

V+

NO

* INTERNAL PROTECTION DIODES

D2

D1

-5V

+5V

MAX382 MAX384

*

Figure 8. Overvoltage Protection Using External Blocking Diodes

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.

12

__________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600

MAX382/MAX384

Low-Voltage, 8-Channel/Dual 4-Channel Multiplexers with Latchable Inputs

_Ordering Information (continued)

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

18 CERDIP**

18 CERDIP**-40°C to +85°C

-55°C to +125°CMAX384MJN

MAX384EJN

18 Wide SO

18 Plastic DIP-40°C to +85°C

-40°C to +85°CMAX384EWN

MAX384EPN

Dice*

18 Wide SO

18 Plastic DIP

PIN-PACKAGETEMP. RANGE

0°C to +70°C 0°C to +70°C 0°C to +70°CMAX384C/D

MAX384CWN

MAX384CPN

PART

__________________________________________________________Chip Topographies

V+

GND

NO3A

NO4A

COMA COMB

AO

0.116"

(2.95mm)

0.082"

(2.08mm)

COM NO8

NO2B

NO3B

NO4B

NO1B

WR RS A1 N.C.

NO2A

NO1A

EN V-

MAX384

TRANSISTOR COUNT: 165 SUBSTRATE CONNECTED TO V+

V+

GND

NO3

NO4

COM NO8

AO

0.116"

(2.95mm)

0.082"

(2.08mm)

COM NO8

NO5

NO6

NO7

N.C.

WR RS A1 A2

NO2

NO1

EN V-

MAX382

Maxim MAX382CPN, MAX382C-D, MAX382MJN, MAX382EWN, MAX382EPN Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual