DG485DN Vishay Semiconductors, DG485DN Datasheet

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DG485DN

Manufacturer Part Number
DG485DN
Description
Manufacturer
Vishay Semiconductors
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
DG485DN
Manufacturer:
SIL
Quantity:
5 510
DESCRIPTION
The DG485 is an analog switch array consisting of eight SPST
switches connected to a common output. This device may be
used as an 8-channel multiplexer in serial control applications.
Any, all or none of the eight switches may be closed at any
given time. Combining low on-resistance (r
and fast switching (t
suited for data acquisition, process control, communication,
and avionic applications.
Control data is input serially into the shift register with each
clock pulse. The shift register contents can be latched-in (via
LD) at any point into an octal latch which in turn controls all
switches. RS resets the shift register, forcing all latch inputs to
a low condition (all switches off). The serial input (D
Document Number: 70065
S-52433—Rev. E, 06-Sep-99
FEATURES
D Low On-Resistance: 55 W
D Rail-to-Rail Analog Input Range
D Serial Interface
D Low-Power—P
D TTL and CMOS Compatible
D Any Combination of 8 SPST to the
D High Speed—t
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
Output
CLK
D
LD
V+
V
S
S
S
S
IN
L
4
3
2
1
ON
D
: 35 nW
ON
1
2
3
4
5
6
7
8
9
: 170 ns
: 170 ns, typ.), the DG485 is ideally
Shift Register
Dual-In-Line
Top View
Latches
Octal Analog Switch Array
18
17
16
15
14
13
12
11
10
DS(on)
BENEFITS
D Low Signal Distortion
D Devices Can Be Chained for System
D Reduced Board Space
D Reduced Switch Errors
D Reduced Power Supply
D Simple Interfacing
Expansion
Requirements
RS
GND
D
S
S
S
S
V–
D
5
6
7
8
OUT
55
W
IN
, typ.)
) and
serial output (D
large systems.
Built on the Vishay Siliconix high voltage silicon gate process
the DG485 has a wide 44-V power supply voltage rating. An
epitaxial layer prevents latchup.
Each channel conducts equally well in either direction when on
and blocks up to rail-to-rail voltages when off.
For additional information please refer to application note
AN204.
V+
S
S
S
S
4
3
2
1
4
5
6
7
8
Shift Register/Latches
OUT
3
9
PLCC and LCC
10
2
) allow daisy chaining of multiple arrays for
Top View
APPLICATIONS
D Audio Switching and Routing
D Audio Teleconferencing
D Data Acquisition and Industrial
D Battery Powered Remote Systems
D Automotive, Avionics and ATE
D Summing Amplifiers
11
Process Control
Systems
1
12
20
www.vishay.com S FaxBack 408-970-5600
19
13
Vishay Siliconix
18
17
16
15
14
D
S
S
S
S
5
6
7
8
DG485
5-1

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DG485DN Summary of contents

Page 1

Octal Analog Switch Array FEATURES D Low On-Resistance Rail-to-Rail Analog Input Range D Serial Interface D Low-Power— TTL and CMOS Compatible D Any Combination of 8 SPST to the Output D High ...

Page 2

... LD n-1 D n-1 D (No Change *LD Input Level Triggered ORDERING INFORMATION Package Part Number 18-Pin Plastic DIP DG485DJ 20-Pin PLCC DG485DN LCC-20 DG485AZ/883 Power Dissipation (Package) c 18-Pin Plastic DIP 20-Pin PLCC, LCC 25 V (V–) – (V Notes: a. Signals diodes ...

Page 3

SPECIFICATIONS Unless Otherwise Specified Parameter Symbol Analog Switch e Analog Signal Range V ANALOG Drain-Source r DS(on) On-Resistance Delta Drain-Source Dr DS(on) g On-Resistance I S(off) Switch Off Leakage Current D(off) V" = "16.5 ...

Page 4

DG485 Vishay Siliconix a SPECIFICATIONS Unless Otherwise Specified Parameter Symbol Dynamic Characteristics (Cont’d) Source Off C e S(off) Capacitance V e Drain Off Capacitance C D(off) V gen e e On-State Capacitance On-State Capacitance C C D(on) D(on) V gen ...

Page 5

TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) r vs. V and Unipolar Power Supply Voltage DS(on) D 400 V– 350 V I 300 250 200 150 100 ...

Page 6

DG485 Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) Supply Currents vs. Switching Frequency V– = – 100 mA 10 ...

Page 7

TIMING DIAGRAMS CLOCK DATA CLOCK RS LOAD CLK OUT S – S and D are expected output ...

Page 8

DG485 Vishay Siliconix SCHEMATIC DIAGRAM (TYPICAL CHANNEL Register CLK CLK D OUT V+ LD V– www.vishay.com S FaxBack 408-970-5600 5 Level Octal Shift/ Latch Drive Shift D 8 ...

Page 9

TEST CIRCUITS + DG485 S 8 CLK V– GND –15 V FIGURE 8. Switching Time Test Circuit TEST CIRCUITS Document Number: ...

Page 10

DG485 Vishay Siliconix APPLICATIONS CLK LOGIC LOGIC DG485 – + FIGURE 12. Multi-Function Circuit Provides Input Selection, Gain Ranging and Filtering with One DG485 www.vishay.com S FaxBack 408-970-5600 ...

Page 11

APPLICATIONS – DG485 FIGURE 14. Summing Node Mixer 8085 SOD ALE Data Bus 8212 (8) (8) WR R/S Document Number: 70065 S-52433—Rev. E, 06-Sep- OUT FIGURE 15. ...

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