DG221B Vishay Siliconix, DG221B Datasheet
DG221B
Manufacturer Part Number
DG221B
Description
Quad SPST CMOS Analog Switch
Manufacturer
Vishay Siliconix
Datasheet
1.DG221B.pdf
(6 pages)
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DG221BDJ
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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.
Document Number: 71616
S-03627—Rev. A, 23-Apr-01
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
GND
IN
IN
V–
D
S
S
D
Quad SPST CMOS Analog Switch with Latches
1
1
1
4
4
4
1
2
3
4
5
6
7
8
Dual-In-Line and SOIC
Top View
D Compatible with Most mP Buses
D Allows Wide Power Supply Tolerance
D Reduced Power Consumption
D Allows Flexibility of Design
16
15
14
13
12
11
10
9
Without Affecting TTL Compatibility
IN
D
S
V+
WR
S
D
IN
2
3
2
3
2
3
New Product
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.
Temp Range
–40_C to 85_C
_
IN
X
X
0
1
X
Four Latchable SPST Switches per Package
_
WR
D mP Based Systems
D Automatic Test Equipment
D Communication Systems
D Data Acquisition Systems
D Medical Instrumentation
D Factory Automation
0
0
1
Logic “0” v 0.8 V
Logic “1” w 2.4 V
16-Pin Narrow SOIC
16-Pin Plastic DIP
Package
Control data latched-in,
switches on or off as selected
by last IN
Maintains previous state
Vishay Siliconix
X
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Switch
OFF
ON
DG221BDJ
DG221BDY
Part Number
DG221B
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