DG221 データシートの表示（PDF） - Vishay Semiconductors
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DG221 Datasheet PDF : 6 Pages
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DG221
Quad SPST CMOS Analog Switch with Latches
Features
Benefits
Applications
D Accepts 150-ns Write Pulse Width
D 5-V On-Chip Regulator
D Built on PLUS-40 Process
D Latches Are Transparent with WR Low
D Low On-Resistance: 60 W
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
D mP Based Systems
D Automatic Test Equipment
D Communication Systems
D Data Acquisition Systems
D Medical Instrumentation
D Factory Automation
Description
The DG221 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 DG221 can be memory mapped,
and addressed as a single data byte for simultaneous
switching.
Designed on the Siliconix PLUS-40 CMOS process, the
DG221 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. These switches guarantee a rail-to-rail
blocking capability (44 V max), in the off condition.
Functional Block Diagram and Pin Configuration
Dual-In-Line and SOIC
IN1 1
D1 2
S1 3
V– 4
GND 5
S4 6
D4 7
IN4 8
16 IN2
15 D2
14 S2
13 V+
12 WR
11 S3
10 D3
9 IN3
Top View
Four Latchable SPST Switches per Package
Truth Table
INX
WR
Switch
0
0
ON
1
0
OFF
Control data latched-in,
X
switches on or off as selected
by last INX
X
1
Maintains previous state
Logic “0” v 0.8 V
Logic “1” w 2.4 V
Temp Range
0_C to 70_C
–40_C to 85_C
–55_C to 125_C
Ordering Information
Package
16-Pin Plastic DIP
16-Pin Narrow SOIC
16-Pin CerDIP
Part Number
DG221CJ
DG221DY
DG221AK/883
Updates to this data sheet may be obtained via facsimile by calling Siliconix FaxBack, 1-408-970-5600. Please request FaxBack document #70041.
Siliconix
1
S-52881—Rev. C, 28-Apr-97
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