dg421dy Maxim Integrated Products, Inc., dg421dy Datasheet

dg421dy

Manufacturer Part Number

dg421dy

Description

Improved Low-power, Cmos Analog Switches With Latches Integrated Products

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.DG421DY.pdf (12 pages)

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Maxim’s redesigned DG421/DG423/DG425 monolithic

analog switches now feature guaranteed on-resistance

matching (3

flatness over the signal range (4

resistance switches (20 typ) conduct equally well in both

directions. They guarantee a low charge injection of 15pC

maximum and an ESD tolerance of 2000V minimum per

Method 3015.7. Off leakage current over temperature has

also been reduced (less than 5nA at +85°C).

The DG421/DG423/DG425 are precision, dual CMOS

switches with latchable logic inputs that simplify inter-

facing with microprocessors (µPs). The single-pole/single-

throw DG421 and double-pole/single-throw DG425 are

normally open dual switches. The dual, single-

pole/double-throw DG423 has two normally open and

two normally closed switches. Fast switching times

(175ns for t

consumption (35µW max) make these parts ideal for

battery-powered applications requiring µP-compatible

switches. Operation is from a single +10V to +30V supply,

or bipolar ± 4.5V to ±20V supplies. Fabricated with the

same 44V silicon-gate process, these switches have

rail-to-rail signal handling capabilities.

19-0137; Rev 1; 3/94

__Functional Diagrams/Truth Tables

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

_______________General Description

_______________________Applications

Functional Diagrams/Truth Tables continued at end of data sheet.

Sample-and-Hold Circuits

Fax Machines

Battery-Operated Systems

Guidance and Control Systems

Audio Signal Routing

IN1

IN2

TWO SPST SWITCHES

PER PACKAGE

max) between switches and on-resistance

and 145ns for t

________________________________________________________________ Maxim Integrated Products

DG421

CMOS Analog Switches with Latches

Modems

Test Equipment

PBX, PABX

Military Radios

Communication Systems

SWITCHES SHOWN FOR

WR RS IN

DG421 TRUTH TABLE

OFF

max). These low on-

LOGIC "O"

LOGIC "1"

LOGIC "1" INPUT

) and low power

2.4V

0.8V

SWITCH

Off

Ordering Information continued at end of data sheet.

* Contact factory for dice specifications.

**Contact factory for availability and processing to MIL-STD-883B.

______________________New Features

__________________Existing Features

_________________Pin Configurations

______________Ordering Information

DG421CJ

DG421CY

DG421C/D

DG421DJ

DG421DY

DG421DK

DG421AK

N.C. = No Internal Connection

Pin Configurations continued at end of data sheet.

Plug-In Upgrades for Industry-Standard

DG421/DG423/DG425

Improved r

Guaranteed r

Improved Charge Injection (15pC max)

Improved Off Leakage Current Over Temperature

(<5nA at +85°C)

Withstands Electrostatic Discharge (2000V min)

per Method 3015.7

Low r

Single-Supply Operation +10V to +30V

Bipolar-Supply Operation ±4.5V to ±20V

Low Power Consumption (35µW max)

Rail-to-Rail Signal Handling Capability

TTL/CMOS-Logic Compatible

TOP VIEW

PART

Improved Low-Power,

DS(ON)

(DS)ON

N.C.

FLAT(ON)

(35 max)

-40°C to +85°C

-55°C to +125°C

TEMP. RANGE

0°C to +70°C

Match Between Channels (3 max)

Over Signal Range (4 max)

DG421

DIP

PIN-PACKAGE

16 Plastic DIP

16 SO

Dice*

16 Plastic DIP

16 SO

16 CERDIP

16 CERDIP**

IN1

V-

GND

V+

IN2

Related parts for dg421dy

dg421dy Summary of contents

Page 1

... Rail-to-Rail Signal Handling Capability TTL/CMOS-Logic Compatible ______________Ordering Information PART DG421CJ DG421CY DG421C/D DG421DJ DG421DY DG421DK DG421AK Ordering Information continued at end of data sheet. * Contact factory for dice specifications. **Contact factory for availability and processing to MIL-STD-883B. _________________Pin Configurations TOP VIEW SWITCH ...

Page 2

Improved Low-Power, CMOS Analog Switches with Latches ABSOLUTE MAXIMUM RATINGS Voltage Referenced ...

Page 3

CMOS Analog Switches with Latches ELECTRICAL CHARACTERISTICS (continued) (V+ = 15V -15V +5V, GND = 0V PARAMETER SYMBOL INPUT Input Current with Input Voltage High I INH Input Current with Input Voltage Low I ...

Page 4

Improved Low-Power, CMOS Analog Switches with Latches __________________________________________T ypical Operating Characteristics (T = +25°C, unless otherwise noted.) A ON-RESISTANCE vs (DUAL-SUPPLIES 5V - 10V -10V A ...

Page 5

CMOS Analog Switches with Latches ___________________Pin Descriptions DG421 PIN NAME FUNCTION 1, 8 D1, D2 Drain Terminals – – — – – Write Select N.C. No Internal Connection – – — – – ...

Page 6

Improved Low-Power, CMOS Analog Switches with Latches ______________________________________________Timing Diagrams/Test Circuits V is the steady-state output with the switch on. Feedthrough via switch capacitance may result in spikes at the OUT leading and trailing edge of the output waveform. t < ...

Page 7

CMOS Analog Switches with Latches _________________________________Timing Diagrams/Test Circuits (continued) 3V 50% LOGIC INPUT 0V V OUT1 0 OUT SWITCH 0V OUTPUT 1 0 OUT V OUT2 SWITCH OUTPUT Figure 4. DG423 Break-Before-Make ...

Page 8

Improved Low-Power, CMOS Analog Switches with Latches _________________________________Timing Diagrams/Test Circuits (continued) SIGNAL GENERATOR 0V or 2.4V NETWORK ANALYZER R L Figure 7. Crosstalk +15V 10nF CAPACITANCE METER S GND WR V- -15V Figure 8. Drain/Source-Off Capacitance 8 ...

Page 9

CMOS Analog Switches with Latches _____________________________________________Pin Configurations (continued IN1 DG423 GND 4 13 DG425 IN2 ...

Page 10

Improved Low-Power, CMOS Analog Switches with Latches _Ordering Information (continued) PART TEMP. RANGE DG423CJ 0°C to +70°C DG423CY 0°C to +70°C DG423C/D 0°C to +70°C DG423DJ -40°C to +85°C DG423DY -40°C to +85°C DG423DN -40°C to +85°C DG423DK -40°C to ...

Page 11

CMOS Analog Switches with Latches ________________________________________________________Package Information ______________________________________________________________________________________ Improved Low-Power ...

Page 12

Improved Low-Power, CMOS Analog Switches with Latches ___________________________________________Package Information (continued 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 ...

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