IC, ANALOG SWITCH, QUAD, SPST, DIP-16

DG221BDJ

Manufacturer Part NumberDG221BDJ
DescriptionIC, ANALOG SWITCH, QUAD, SPST, DIP-16
ManufacturerVishay
DG221BDJ datasheet
 


Specifications of DG221BDJ

Analog Switch TypeSPSTNo. Of Channels4
On State Resistance Max60ohmTurn Off Time340ns
Turn On Time550nsSupply Voltage Range± 15V
Operating Temperature Range-40°C To +85°CLead Free Status / RoHS StatusContains lead / RoHS non-compliant
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Quad SPST CMOS Analog Switch with Latches
D Accepts 150-ns Write Pulse Width
D 5-V On-Chip Regulator
D Latches Are Transparent with WR Low
D Low On-Resistance: 60 W
The DG221B is a monolithic quad single-pole, single-throw
analog switch designed for precision switching applications in
communication, instrumentation and process control systems.
Featuring independent onboard latches and a common WR
pin, each DG221B can be memory mapped, and addressed as
a single data byte for simultaneous switching.
Dual-In-Line and SOIC
IN
1
1
D
1
2
S
1
3
V–
4
GND
5
S
6
4
D
4
7
IN
4
8
Top View
Document Number: 71616
S-03627—Rev. A, 23-Apr-01
New Product
D Compatible with Most mP Buses
D Allows Wide Power Supply Tolerance
Without Affecting TTL Compatibility
D Reduced Power Consumption
D Allows Flexibility of Design
The DG221B combines low power and low on-resistance (60
W typical) while handling continuous currents up to 20 mA. An
epitaxial layer prevents latchup.
The device features true bidirectional performance in the on
condition.
Four Latchable SPST Switches per Package
IN
X
IN
16
2
0
D
15
2
1
S
14
2
X
V+
13
X
WR
12
S
11
3
D
10
3
IN
9
3
Temp Range
_
_
–40_C to 85_C
DG221B
Vishay Siliconix
D mP Based Systems
D Automatic Test Equipment
D Communication Systems
D Data Acquisition Systems
D Medical Instrumentation
D Factory Automation
WR
Switch
0
ON
0
OFF
Control data latched-in,
switches on or off as selected
by last IN
X
1
Maintains previous state
Logic “0” v 0.8 V
Logic “1” w 2.4 V
Package
Part Number
16-Pin Plastic DIP
DG221BDJ
16-Pin Narrow SOIC
DG221BDY
www.vishay.com
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DG221BDJ Summary of contents

  • Page 1

    ... D Communication Systems D Data Acquisition Systems D Medical Instrumentation D Factory Automation WR Switch OFF Control data latched-in, switches on or off as selected by last Maintains previous state Logic “0” v 0.8 V Logic “1” w 2.4 V Package Part Number 16-Pin Plastic DIP DG221BDJ 16-Pin Narrow SOIC DG221BDY www.vishay.com 1 ...

  • Page 2

    ... DG221B Vishay Siliconix Voltages Referenced to V– GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a Digital Inputs , mA, whichever occurs first Continuous Current (Any Terminal Continuous Current Peak Current (Pulsed 1 ms, 10% duty cycle Reg GND V– www.vishay.com 2 New Product Storage Temperature Power Dissipation (Package) 16-Pin Plastic DIP 16-Pin SOIC (V– ...

  • Page 3

    ... D Room Room 100 kHz , f = 100 kHz S S p Room All Channels On or Off All Channels On or Off 2.4 V Room IN DG221B Vishay Siliconix Limits –40 to 85_C Min Typ Max Full – Full 135 "0.01 –5 5 Full –100 100 "0.02 –5 5 Full – ...

  • Page 4

    ... DG221B Vishay Siliconix + V– GND – (includes fixture and stray capacitance + GND V– – (includes fixture and stray capacitance The latches are level sensitive. When WR is held low the latches are transparent and the switches re- spond to the digital inputs. The digital inputs are latched on the rising edge of WR. ...

  • Page 5

    ... Application Hints are for DESIGN AID ONLY, not guaranteed and not subject to production testing. Document Number: 71616 S-03627—Rev. A, 23-Apr-01 New Product 1000 pF FIGURE 5. Charge Injection V– GND WR (V) (V) 0 2.4/0.8 0 2.4/0.8 0 2.4/0.8 DG221B Vishay Siliconix OFF ON OFF measured voltage error due to charge injection The charge injection in coulombs + GND V– ...

  • Page 6

    ... DG221B Vishay Siliconix Data Bus WR CS Address Address Bus Decoder Notes may be held at “0” for temporary operation similar to DG201A/DG201B. With WR at “0” SW www.vishay.com 6 New Product + DG221B V– GND –15 V The TL081 is used as an output buffer while the voltage divider provides attenuation. ...

  • Page 7

    ... Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’ ...