Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - analogue switches SO 16

_______________General Description

The MAX381/MAX383/MAX385 are precision, low-volt-

age analog switches. The single-pole single-throw

MAX381 and double-pole single-throw MAX385 dual

switches are normally open. The single-pole double-

throw MAX383 has two normally open and two normally

closed poles. All three parts offer low on-resistance

(less than 35Ω), guaranteed to match to within 2Ω

between channels and to remain flat over the specified

analog signal range (4Ω max). They also offer low leak-

age (less than 250pA at +25°C and less than 2.5nA at

+85°C) and fast switching (turn-on time less than 175ns

and turn-off time less than 100ns).

The MAX381/MAX383/MAX385 are fabricated with

Maxim’s low-voltage silicon-gate process for high sys-

tem accuracy. Design improvements guarantee

extremely low charge injection (<5pC) and low power

consumption (<10µW).

These monolithic switches operate with a single posi-

tive supply (+3V to +15V) or with split supplies (±3V to

±8V) while retaining CMOS-logic input compatibility

and fast switching. CMOS inputs provide reduced input

________________________Applications

Sample-and-Hold Circuits Military Radios

Test Equipment Communication Systems

Heads-Up Displays Battery-Operated Systems

Audio Signal Routing PBX, PABX

Guidance and Control Systems

____________________________Features

♦ Single-Supply Operation (+3V to +15V)

Bipolar-Supply Operation (±3V to ±8V)

♦ Pin-Compatible with DG401/DG403/DG405

♦ Low On-Resistance, 20Ω Typical (35Ω Max)

♦ Guaranteed Matched On-Resistance Between

Channels, <2Ω

♦ Guaranteed Flat On-Resistance over Specified

Analog Signal Range, <4Ω

♦ Guaranteed Charge Injection, <5pC

♦ Guaranteed Off-Channel Leakage, <2.5nA at +85°C

♦ TTL/CMOS-Logic Compatible with 3V, 5V, ±3V,

and ±5V Supplies

♦ Rail-to-Rail Analog Signal Handling Capability

______________Ordering Information

MAX381/MAX383/MAX385

Precision, Low-Voltage Analog Switches

________________________________________________________________

Maxim Integrated Products

MAX383

LOGIC IN

COM

TOP VIEW

MAX381

LOGIC IN SWITCH

OFF

MAX385

LOGIC IN

COM, NO

OFF

NO1

IN1

V-

GND

NO3

COM3

N.C.

COM1

MAX385

N.C.

V+

IN2

NO2

COM2

N.C.

COM4

NO4

NO1

IN1

V-

GND

N.C.

COM1

MAX381

N.C.

V+

IN2

NO2

COM2

N.C.

NO1

IN1

V-

GND

NC3

COM3

N.C.

COM1

MAX383

N.C.

V+

IN2

N02

COM2

N.C.

COM4

NC4

NC NO

COM

OFF

COM

PWR OFF OFF OFF OFF

PWR OFF OFF PWR OFF OFF

N.C. = NOT INTERNALLY

CONNECTED

___________________________Pin Configurations/Block Diagrams/Truth Tables

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

19-0300; Rev 0; 9/94

Ordering Information continued on last page.

* Dice are tested at T

= +25°C only.

** Contact factory for package availability.

16 CERDIP**-55°C to +125°CMAX381MJE

16 CERDIP**-40°C to +85°CMAX381EJE

16 Narrow SO-40°C to +85°CMAX381ESE

16 Plastic DIP-40°C to +85°CMAX381EPE

Dice*0°C to +70°CMAX381C/D

16 Narrow SO0°C to +70°CMAX381CSE

16 Plastic DIP0°C to +70°C

MAX381CPE

PIN-PACKAGETEMP. RANGEPART

Summary of content (12 pages)

PAGE 1
9-0300; Rev 0; 9/94 Precision, Low-Voltage Analog Switches ____________________________Features ♦ Single-Supply Operation (+3V to +15V) Bipolar-Supply Operation (±3V to ±8V) The MAX381/MAX383/MAX385 are precision, low-voltage analog switches. The single-pole single-throw MAX381 and double-pole single-throw MAX385 dual switches are normally open. The single-pole doublethrow MAX383 has two normally open and two normally closed poles.
PAGE 2
MAX381/MAX383/MAX385 Precision, Low-Voltage Analog Switches ABSOLUTE MAXIMUM RATINGS Voltage Referenced to GND V+ .......................................................................-0.3V to +17V V- ........................................................................+0.3V to -17V V+ to V-...............................................................-0.3V to +17V COM_, NO_, NC_, IN_ ................(V- - 2V) to (V+ + 2V) or 30mA, whichever occurs first Continuous Current, any pin ...................
PAGE 3
Precision, Low-Voltage Analog Switches (V+ = +5V ±10%, V- = -5V ±10%, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS DIGITAL LOGIC INPUT Input Current with Input Voltage High IINH VIN = 2.4V, all others = 0.8V -1.0 0.005 1.0 µA Input Current with Input Voltage Low IINL VIN = 0.8V, all others = 2.4V -1.0 0.005 1.
PAGE 4
MAX381/MAX383/MAX385 Precision, Low-Voltage Analog Switches ELECTRICAL CHARACTERISTICS—Single +5V Supply (V+ = +5V ±10%, V- = 0V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL TEMP.
PAGE 5
Precision, Low-Voltage Analog Switches MAX381/MAX383/MAX385 ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued) (V+ = +5V ±10%, V- = 0V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.
PAGE 6
ELECTRICAL CHARACTERISTICS—Single +3.3V Supply (continued) (V+ = 3.0V to 3.6V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP (Note 2) MAX UNITS DIGITAL LOGIC INPUT Input Current with Input Voltage High IINH VIN = 2.4V, all others = 0.8V -1.0 0.005 1.0 µA Input Current with Input Voltage Low IINL VIN = 0.8V, all others = 2.4V -1.0 0.005 1.0 µA Turn-On Time (Note 3) tON VCOM = 1.
PAGE 7
Precision, Low-Voltage Analog Switches OFF LEAKAGE CURRENT vs. TEMPERATURE TA = +25°C 20 TA = -55°C 1 0.1 0.01 0.001 10 0 2 3 4 5 0.01 0.0001 -75 +25 -25 +75 -75 +125 -25 +25 +75 +125 VCOM (V) TEMPERATURE (°C) TEMPERATURE (°C) CHARGE INJECTION vs. VCOM SUPPLY CURRENT vs. TEMPERATURE MAX383 SUPPLY CURRENT vs. LOGIC INPUT FREQUENCY (BOTH INPUTS DRIVEN) V+ = 5V V- = -5V I+, I- (µA) 1 0 -10 100 10 SUPPLY CURRENT (µA) 20 1000 0.1 I+ at V+ = 5.5V 0.01 V+ = 5V V- = 0V -20 0.
PAGE 8
MAX381/MAX383/MAX385 Precision, Low-Voltage Analog Switches ______________________________________________________________Pin Description PIN NAME FUNCTION MAX381 MAX383 MAX385 1, 8 1, 3, 6, 8 1, 3, 6, 8 COM_ 2–7, 12 2, 7, 12 2, 7, 12 N.C.
PAGE 9
Precision, Low-Voltage Analog Switches +5V +3V LOGIC INPUT tr < 20ns tf < 20ns 50% RL = 1000Ω CL = 35pF 0V V+ VCOM = +3V (for tON) tOFF COM VOUT NC or NO VCOM = -3V (for tOFF) VOUT IN 0.9 x VOUT SWITCH OUTPUT MAX381 MAX383 MAX385 LOGIC INPUT 0V tON 0.9 x VOUT VOUT GND V- 0V -5V REPEAT TEST FOR EACH SWITCH LOGIC INPUT WAVEFORM IS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE CONTROL. VOUT = VCOM ( RL RL + RON ) FOR LOAD CONDITIONS, SEE Electrical Characteristics.
PAGE 10
MAX381/MAX383/MAX385 Precision, Low-Voltage Analog Switches _________________________________Test Circuits/Timing Diagrams (continued) SIGNAL GENERATOR +5V C MAX381 MAX383 MAX385 V+ VCOM IN ANALYZER CH A CH B FREQUENCY TESTED SIGNAL GENERATOR ANALYZER 1MHz AUTOMATIC SYNTHESIZER TRACKING SPECTRUM ANALYZER 0V or 2.4V NC or NO C V- GND RL OFF ISOLATION = 20log VCOM VNC or NO -5V Figure 5. Off Isolation SIGNAL GENERATOR +5V C MAX381 MAX383 MAX385 50Ω COM V+ NC OR NO IN 0V or 2.
PAGE 11
Precision, Low-Voltage Analog Switches PART TEMP.
PAGE 12
MAX381/MAX383/MAX385 Precision, Low-Voltage Analog Switches ________________________________________________________Package Information DIM E A A1 B C D E e H h L α H INCHES MAX MIN 0.069 0.053 0.010 0.004 0.019 0.014 0.010 0.007 0.394 0.386 0.157 0.150 0.050 BSC 0.244 0.228 0.020 0.010 0.050 0.016 8˚ 0˚ MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 9.80 10.00 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.