MAXIM MAX382, MAX384 Technical data

19-0396; Rev. 0; 5/95

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

Multiplexers with Latchable Inputs

_______________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.

____________________________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

________________________Applications

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

______________Ordering Information

PART

MAX382CPN

MAX382CWN MAX382C/D 0°C to +70°C MAX382EPN MAX382EWN -40°C to +85°C MAX382EJN MAX382MJN -55°C to +125°C

Ordering Information continued on last page.

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

TEMP. RANGE PIN-PACKAGE

0°C to +70°C 0°C to +70°C

-40°C to +85°C 18 Plastic DIP

-40°C to +85°C 18 CERDIP**

18 Plastic DIP 18 Wide SO Dice*

18 Wide SO

18 CERDIP**

__________________________________________________________Pin Configurations

MAX382/MAX384

TOP VIEW

MAX382

1

WR

2

A0

3

EN

VN01 N02 N03 N04

COM

________________________________________________________________

LOGIC

4 5 6 7 8 9

DIP/SO

18

RS A1

17

A2

16

GND

15 14

V+ N05

13

N06

12

N07

11

N08

10

WR

A0 EN

VN01A N02A N03A N04A

COMA

MAX384

1 2 3

LOGIC

4 5 6 7 8 9

DIP/SO

Maxim Integrated Products

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

18

RS A1

17

GND

16

V+

15 14

N01B N02B

13

N03B

12

N04B

11

COMB

10

1

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

ABSOLUTE MAXIMUM RATINGS

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

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

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

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.

= +70°C)

A

MAX382/MAX384

ELECTRICAL CHARACTERISTICS—Dual Supplies

(V+ = +5V ±10%, V- = -5V ±10%, GND = 0V, V unless otherwise noted.)

SYMBOLPARAMETER

SWITCH

Analog Signal Range

Channel On-Resistance

On-Resistance Matching Between Channels (Note 4)

On-Resistance Flatness (Note 5)

NO-Off Leakage Current (Note 6)

COM-Off Leakage Current (Note 6)

COM-On Leakage Current (Note 6)

, V

COM

R

ON

∆R

ON

R

FLAT(ON)

I

NO(OFF)

I

COM(OFF)

I

COM(ON)

NO

= V

ENH

= 2.4V, V

A_H

(Note 3) INO= 1mA, V

INO= 1mA, V V+ = 5V, V- = -5V

VNO= ±4.5V, V V+ = 5.5V, V- = -5.5V

V

= ±4.5V,

COM

±

V

= 4.5V,

NO

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

= ±4.5V,

V

COM

±

V

= 4.5V,

NO

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

V

= ±4.5V,

COM

V

= 4.5V,

NO

COM

= ±3.5V

= ±3.5V,

= ±3V,

A_L

CONDITIONS

±

= 4.5V,

MAX382

MAX384

MAX382

MAX384

= V

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

ENL

MIN TYP MAX

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C TA= T TA= +25°C

TA= T to T

TA= +25°C TA= T

to T TA= +25°C TA= T

to T

MAX

MIN

to T

MAX

C, E M

-0.1 0.1

-1.0 1.0

-10 10

-0.2 0.2

-2.5 2.5

-20 20

-0.1 0.1

-1.5 1.5

-10 10

-0.4 0.4

-5 5

-40 40

-0.2 0.2

-2.5 2.5

-20 20

(Note 2)

60 100

125

10 13

to T

MIN

UNITS

4 6

nA

MAX

VV- V+V

Ω

,

2 _______________________________________________________________________________________

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

Multiplexers with Latchable Inputs

ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)

(V+ = +5V ±10%, V- = -5V ±10%, GND = 0V, V unless otherwise noted.)

SYMBOLPARAMETER

DIGITAL LOGIC INPUT

Logic High Input Voltage Logic Low Input Voltage TA= T 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

AX, EN Data Hold Time Reset Pulse Width ns100Figure 6, V+ = 5V TA= +25°C

t

H

t

RS

DYNAMIC

Transition Time Break-Before-Make Interval

Enable Turn-On Time

Enable Turn-Off Time

Write Turn-On Time

Reset Turn-Off Time Charge Injection (Note 3)

Off Isolation (Note 7) Crosstalk Between Channels Logic Input Capacitance

NO-Off Capacitance COM-Off Capacitance pF

COM-On Capacitance pF

TRANS

OPEN

t

ON(EN)

t

OFF(EN)

t

ON(WR)

t

OFF(RS)

CTE ISO

CT

NO(OFF)

C

COM(OFF)

C

COM(ON)

IN

MINIMUM INPUT TIMING REQUIREMENTS

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

W

S

= V

ENH

= 2.4V, V

A_L

A_H

CONDITIONS

V

A_H

= 2.4V, V

A_L

= 0.8V µA-0.1 0.1I

= 0.8V

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

Figure 5

Figure 1 Figure 2

Figure 3

Figure 4

Figure 6 CL= 100pF, VNO= 0V

VEN= 0V, RL= 1kΩ, f = 100kHz VEN= 2.4V, f = 100kHz,

V

= 1V

GEN

, RL= 1kΩ

p-p

f = 1MHz f = 1MHz, VEN= V

f = 1MHz,

VEN= V

COM

= 0V

f = 1MHz,

VEN= V

COM

= 0V

COM

= 0V MAX382 MAX384 MAX382 MAX384

= V

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

ENL

MIN TYP MAX

TA= T

MIN MIN

to T to T

MAX MAX

-0.1 0.1I

TA= +25°C

TA= T

MIN

to T

MAX

TA= +25°C

TA= +25°C 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= +25°C

TA= +25°C

MIN

(Note 2)

100 150

250

80 150

250 150 250 150 250

40 20 54 34

to T

UNITS

V2.4V V0.8V

µAV

V±2.4 ±8V+, V-Power-Supply Range

µA-1 1I+Positive Supply Current

µA-1 1I-Negative Supply Current ns100

ns100 275t ns020t

ns

ns pC25V

dB-75V dB-92V pF8C

pF11C

ns100t ns100t

MAX382/MAX384

,

MAX

_______________________________________________________________________________________ 3

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

ELECTRICAL CHARACTERISTICS—Single +5V Supply

(V+ = +5V ±10%, V- = 0V, GND = 0V, V otherwise noted.)

A_H

= V

ENH

= 2.4V, V

A_L

= V

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

ENL

MIN

to T

MAX

, unless

PARAMETER SYMBOL

AX, EN Data Hold Time t Reset Pulse Width

SWITCH

On-Resistance R

On-Resistance Matching Between Channels (Note 4)

MAX382/MAX384

On-Resistance Flatness R

NO-Off Leakage Current (Note 8)

COM-Off Leakage Current (Note 8)

COM-On Leakage Current (Note 8)

DIGITAL LOGIC INPUT

Logic High Input Voltage VH, V Logic Low Input Voltage VL, V Input Current with

Input Voltage High Input Current with

Input Voltage Low

SUPPLY

H

RS

, V

COM

ON

∆R

ON

FLAT

I

NO(OFF)

I

COM(OFF)

I

COM(ON)

ENH ENL

IH, I

ENH

IL, I

ENL

NO

Figure 5

TA= +25°C TA= +25°C

(Note 3)Analog Signal Range V INO= 1mA, V

V+ = 4.5V INO= 1mA, V

V+ = 4.5V INO= 1mA; V

V+ = 5V

VNO= 4.5V, V V+ = 5.5V

V

= 4.5V,

COM

V

= 0V,

NO

V+ = 5.5V V

= 4.5V,

COM

V

= 0V,

NO

V+ = 5.5V

= 3.5V,

COM

= 3.5V,

COM

= 3V, 2V, 1V;

COM

= 0V,

MAX382

MAX384

TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

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

to T

TA= +25°C

V

= 4.5V,

COM

V

= 4.5V,

NO

V+ = 5.5V

MAX382

MAX384

TA= T

MIN

to T

MAX

TA= +25°C TA= T

MIN

to T

MAX

TA= T

MIN

TA= T

MIN

to T to T

VH= 2.4V, VL= 0.8V µA

MIN TYP MAX

(Note 2)

100 ns 100

V- V+ V

MAX

-0.1 0.1

C, E

-1.0 1.0

M

-10 10

-0.2 0.2

C, E

-2.5 2.5

M

-20 20

-0.2 0.2

C, E

-1.5 1.5

M

-10 10

-0.4 0.4 C, E M

-5 5

-40 40

-0.2 0.2 C, E

-2.5 2.5 M

-20 20

MAX MAX

2.4 V

-0.1 0.1 µAVH= 2.4V, VL= 0.8V

-0.1 0.1

150 225

10 16 15 20

Power-Supply Range 2.4 15 V Positive Supply Current I+ -1.0 1.0 µA Negative Supply Current I- -1.0 1.0 µA

I

GND Supply Current

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

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

I

GND

V+ = 5.5V; V- = 0V

TA= +25°C TA= T

MIN

to T

MAX

-1.0 1.0

280

10 12

0.8

UNITSCONDITIONS

nsFigure 6, V+ = 5Vt

Ω

nA

V

µA

4 _______________________________________________________________________________________

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

Multiplexers with Latchable Inputs

ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)

(V+ = +5V ±10%, V- = 0V, GND = 0V, V otherwise noted.)

SYMBOLPARAMETER

DYNAMIC

Transition Time Break-Before-Make Interval

Enable Turn-On Time (Note 3)

Enable Turn-Off Time (Note 3)

Write Turn-On Time (Note 3)

Reset Turn-Off Time (Note 3)

TRANS

t

OPEN

t

ON(EN)

t

OFF(EN)

t

ON(WR)

t

OFF(RS)

V

CTE

= V

ENH

= 2.4V, V

A_H

Figure 1, VNO= 3V Figure 2 (Note 3)

Figure 3

Figure 4

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

= V

A_L

ENL

CONDITIONS

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

MIN TYP MAX

(Note 2)

TA= +25°C TA= +25°C TA= T

MIN

TA= +25°C TA= T

MIN

to T

MAX

130 200

80 200

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C

MIN

to T

275

275 200 275 200 275

MAX

, unless

UNITS

ns90 280t ns540

ns

pC1.5 5Charge Injection (Note 3) pC

ELECTRICAL CHARACTERISTICS—Single +3V Supply

(V+ = +3V ±10%, V- = 0V, GND = 0V, V otherwise noted.)

SYMBOLPARAMETER

SWITCH

Analog Signal Range On-Resistance

ANALOG

R

ON

DYNAMIC

Transition Time (Note 3)

Enable Turn-On Time (Note 3)

Enable Turn-Off Time (Note 3)

Charge Injection (Note 3)

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

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

= RON(max) - RON(min).

ON

ranges, i.e., V

NO

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

TRANS

ON(EN)

OFF(EN)

ON(WR) OFF(RS)

CTE

= V

ENH

= 2.4V, V

A_H

(Note 3) INO= 1mA, V

V+ = 3V

COM

Figure 1, VIN= 2.4V, V

= 1.5V, V

N01

Figure 3, V V

INL

= 0V, V

INH

N01

INH

N01

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

A_L

CONDITIONS

= 1.5V,

= 0V

N08

= 2.4V,

= 1.5V

= 2.4V,

= 1.5V

= V

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

ENL

TA= +25°C TA= T

MIN

to T

MAX

TA= +25°C

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

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

COM/VNO

MIN

MIN TYP MAX

(Note 2)

230 375

75 400t

, V

= output, VNO= input to off switch.

COM

to T

425

MAX

, unless

UNITS

ns230 575t

ns200 500t

ns ns200 500t

ns75 400t pC15V

MAX382/MAX384

VV- V+V

Ω

_______________________________________________________________________________________ 5

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

__________________________________________Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

ON-RESISTANCE vs. V

(DUAL SUPPLIES)

110 100

90 80

(Ω)

70

ON

R

60 50

40

MAX382/MAX384

30

-5 -3 1

-1 3 V

ON-RESISTANCE vs. V

AND TEMPERATURE

180 160

140 120

(Ω)

ON

100

R

80 60 40

02

(SINGLE SUPPLY)

V+ = 5V V- = 0V

TA = +125°C

T

153

V

COM

COM 

V± = ±3V

V± = ±5V



COM

TA = -55°C

4

5-4 0-2 2 4

(V)

COM

TA = +85°C

= +25°C

A

(V)



CHARGE INJECTION vs. V

5

(pC)

j

Q

V+ = 5V V- = -5V

110 100

MAX398/9 TOC1

(Ω)

ON

R

1000

MAX398/9 TOC4

OFF-LEAKAGE (pA)

COM

V+ = 5V V- = 0V

ON-RESISTANCE vs. V

AND TEMPERATURE

(DUAL SUPPLIES)

V+ = 5V V- = -5V

90

V+ = 5.5V V- = -5.5V

MAX398/9 TOC7

TA = +125°C TA = +85°C

TA = +25°C

TA = -55°C

-1 3 V

COM

OFF-LEAKAGE vs.

TEMPERATURE

TEMPERATURE (°C)

80 70

60 50

40 30

-5 -3 1

100

10

1

0.1

-50 12525-25 0 7550 100

(V)

COM 

10



1

I+, I- (nA)

MAX398/9 TOC2

5-4 0-2 2 4

MAX398/9 TOC5

V+ = 5V V- = -5V V

EN

(Ω)

ON

R

10,000

ON-LEAKAGE (pA)

= VA = 0V, 5V

ON-RESISTANCE vs. V

300 275

250 225

200 175 150 125 100

75 50

1000

100

10

1

0.1

SUPPLY CURRENT vs.

TEMPERATURE

(SINGLE SUPPLY)

V- = 0V

V+ = 3V

02

153

V

(V)

COM

ON-LEAKAGE vs.

TEMPERATURE

V+ = 5.5V V- = -5.5V

-50 12525-25 0 7550 100 TEMPERATURE (°C)

I+

I-

V+ = 5V

MAX398/9 TOC8

COM



MAX398/9 TOC3

4

MAX398/9 TOC6

-5

-5 -3 1

-1 305-4 0-2 2 4 V

(V)

COM

0.1

-50 12525-25 0 7550 100 TEMPERATURE (°C)

6 _______________________________________________________________________________________

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

Multiplexers with Latchable Inputs

______________________________________________________________Pin Description

MAX382 MAX384

1 WR WRITE Logic Input

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

—

3 3 EN Enable Logic Input (see 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 18 18 RS RESET Logic Input

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

1

2, 17

__________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

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.

). The analog-signal switches consist of

NAME* FUNCTION

A0, A1 Address Logic Inputs (see

Truth Tables

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.

Truth Tables Truth Tables

at end of data sheet)— at end of data sheet)

at end of data sheet)

MAX382/MAX384

_______________________________________________________________________________________ 7

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

______________________________________________Test Circuits/Timing Diagrams

+5V

V+

NO2–NO7

+5V

V+

NO1A–NO4A

WR

-5V

V-

NO1

NO8

COM

NO1B



NO4B

COMB

300Ω

±3V

±

3V

V

OUT

35pF

±3V

±

3V

V

OUT

35pF

LOGIC INPUT

SWITCH OUTPUT

V

OUT

+3V

0V

V

NO_

0V

V

NO_

t

TRANS

50%

90%

tR < 20ns

< 20ns

t

F

90%

t

TRANS

50Ω

RS EN

A0 A1 A2

MAX382

GND WR

+2.4V

MAX382/MAX384

+2.4V

50Ω

RS

MAX384

EN A0

COMA, N02B–N03B

A1

GND

Figure 1. Transition Time

+5V

V+

= +3V

V

AH

0V

V

A

V

OUT

50% 50%

t

OPEN

Figure 2. Break-Before-Make Interval (t

OPEN

A2

V

A

50Ω

+2.4V

A1

MAX382*

A0

EN

RS

*SIMILAR CONNECTION FOR MAX384

)

N01

N02–

N08

COM

1k

V-

GNDWR

-5V

8 _______________________________________________________________________________________

+5V



35pF

V

OUT

V

EN

V

0V

OUT

Figure 3. Enable Delay (t

V

WR

+3V

+1.5V

0V

V

0V

OUT

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

Multiplexers with Latchable Inputs

+5V

V+

N01

N03

ALL

N0_

+10V



V

OUT

+5V

35pF



35pF

V

OUT

1k

V

50%

0.9 V

O

t

ON(EN)

50%

AH

= +3V

, t

OFF(EN)

t

ON

(WR)

50%

t

OFF(EN)

)

0.2V

A2

GNDWR

+5V

N02–

COM,

COMB

V-

-5V

V+

N01 or

N01B

COM,

COMB

V-

-5V

0V

V

EN

+2.4V

LOGIC INPUT

O



A1

MAX382*

A0 EN

+2.4V

RS

50Ω

*SIMILAR CONNECTION FOR MAX384

EN A0, A1,

(A2)

MAX382*

RS WR

GND

MAX382/MAX384

DEVICE MUST BE RESET PRIOR TO APPLYING WR PULSE

Figure 4. Write Turn-On Time (t

3V

WR

0V

A0, A1, (A2)

3V

EN

0V

ON(WR)

50%

)

t

W

t

S

20%

80%

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

_______________________________________________________________________________________ 9

t

H

S, tH

*SIMILAR CONNECTION FOR MAX384

SWITCH

OUTPUT

3V

RS

0V

V

O

50%

t

RS

t

(RS)

OFF

80%

)

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

+5V

V+

EN

+3V

RS

+1.5V

0V

V

O

OUT

50%

(RS)

t

OFF

0.8V

O

LOGIC INPUT

A0, A1, (A2)

RS

MAX382

WR

COM, COMB

GND

N01+2.4V

N01–

N08

V-

1k

-5V

+5V



35pF

V

OUT

Figure 6. Reset Turn-Off Time (t

OFF(RS)

)

MAX382/MAX384

CTE

ON

)

OFF

∆V

L

Other than ±5V

graphs show typical on-resis-

OFF

EN

V

OUT

∆V

IS THE MEASURED VOLTAGE ERROR DUE TO

OUT

CHARGE INJECTION. THE CHARGE IN COULOMBS IS Q = C

Figure 7. Charge Injection (V

Operation with Supply Voltages

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

Operating Characteristics

tance with ±3V, ±5V, +3V and +5V supplies. (Switching times increase by a factor of two or more for operation at +5V or below.)

OUT

x ∆V

O

Typical

+5V

GND WR

V+

RS

COM

V-

-5V

A0, A1, (A2)

R

GEN

N0_

IN

3V

V

GEN

+2.4V

MAX382 MAX384

C

L

100pF

V

OUT



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.

10 ______________________________________________________________________________________

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

Multiplexers with Latchable Inputs

+5V

D1

V+

MAX382 MAX384

*

COM

*

V-

*

D2

* INTERNAL PROTECTION DIODES

-5V

NO

Figure 8. Overvoltage Protection Using External Blocking Diodes

__________________________________________Functional Diagrams/Truth Tables

MAX382 8-CHANNEL SINGLE-ENDED MULTIPLEXER

V+ V- GND

NO1 NO2 NO3 NO4

NO5 NO6 NO7 NO8

DECODERS / DRIVERS

LATCHES

WR

COM

RS

MAX384 DIFFERENTIAL 4-CHANNEL MULTIPLEXER

V+ V- GND

NO1A NO2A NO3A NO4A

NO1B NO2B NO3B NO4B

DECODERS / DRIVERS

LATCHES

WR

COMA

COMB

RS

MAX382/MAX384

A1A2 A0 EN

Latching

XXXX1

Reset

XX XXX0

Transparent Operation

X

X 0 0 0 0 1 1 1 1

X 0 0 1 1 0 0 1 1

0

1

0

1

0

1

0

1

1

______________________________________________________________________________________ 11

WR RS

0 0 0 0 0 0 0 0 0

Maintains previous switch condition

NONE (latches cleared)

NONE

1

2

1

3

1

4

1

5

1

6

1

7

1

8

1

ON SWITCH

A1 A0 EN

Latching

XXX 1

Reset

XXXX0

Transparent Operation

X

0

1

0

1

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

0 1 1 1 1

WR RS

0 0 0 0 0

Maintains previous switch condition

NONE (latches cleared)

NONE

1

2

1

3

1

4

1

ON SWITCH

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

_Ordering Information (continued)

PART

MAX384CPN

MAX384CWN

MAX384EPN

MAX384EJN

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

-40°C to +85°CMAX384EWN

-55°C to +125°CMAX384MJN

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

__________________________________________________________Chip Topographies

MAX382/MAX384

MAX382

AO

WR RS A1 A2

PIN-PACKAGETEMP. RANGE

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

MAX384

AO

WR RS A1 N.C.

NO1

NO2 NO3

NO4

EN V-

COM NO8

0.082"

(2.08mm)

GND V+

N.C. NO5

NO6

NO7

0.116"

(2.95mm)

NO1A

NO2A NO3A

NO4A

EN V-

COM NO8

COMA COMB

0.082"

(2.08mm)

GND V+

NO1B NO2B

NO3B

NO4B

0.116"

(2.95mm)

TRANSISTOR COUNT: 165 SUBSTRATE CONNECTED TO V+

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

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MAXIM MAX382, MAX384 Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual