dg485 Vishay, dg485 Datasheet

no-image

dg485

Manufacturer Part Number
dg485
Description
Octal Analog Switch Array
Manufacturer
Vishay
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
dg485AZ/883
Manufacturer:
MEDL
Quantity:
2
Part Number:
dg485DJ
Manufacturer:
SONIX
Quantity:
1 000
Part Number:
dg485DJ
Manufacturer:
SILICONIX
Quantity:
20 000
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

Related parts for dg485

dg485 Summary of contents

Page 1

... D High Speed—t : 170 ns ON 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 : 170 ns, typ ...

Page 2

... 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. Limit forward diode current to maximum current ratings. ...

Page 3

... See Figures Full Room Full 1,000 Room Any One Channel = pF MHz L L Room See Figure 9 Room DG485 Vishay Siliconix A Suffix D Suffix –55 to 125_C –40 to 85_C Typ Min Max Min Max Unit –15 15 –15 ...

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 Power Supplies Positive Supply I+ Current Negative Supply I– Current Logic Supply Current ...

Page 5

... L –140 –120 –100 –80 –60 –40 – DG485 Vishay Siliconix r vs. V and Temperature DS(on) D 125_C 25_C –55_C V– = – – –10 – – Drain Voltage (V) ...

Page 6

... DG485 Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) Supply Currents vs. Switching Frequency V– = – 100 100 100 – Frequency (Hz) Source/Drain Off Capacitance vs. Analog Voltage V– = –15 V ...

Page 7

... The sources require pull-down OUT Document Number: 70065 S-52433—Rev. E, 06-Sep-99 50% 50 FIGURE 4. Data Setup and Hold Time t RH FIGURE 5. Timing Relationships FIGURE 6. DG485 Vishay Siliconix t DRC www.vishay.com S FaxBack 408-970-5600 5-7 ...

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 FIGURE V– GND Document Number: 70065 S-52433—Rev. E, 06-Sep-99 ...

Page 9

... Document Number: 70065 S-52433—Rev. E, 06-Sep- FIGURE 9. Adjacent Input Crosstalk DG485 FIGURE 10. Off Isolation DG485 Vishay Siliconix DG485 www.vishay.com S FaxBack 408-970-5600 5-9 ...

Page 10

... – + FIGURE 12. Multi-Function Circuit Provides Input Selection, Gain Ranging and Filtering with One DG485 www.vishay.com S FaxBack 408-970-5600 5-10 f= for CLK and LD inputs of the same frequency. The recommended phase delay of LD from CLK is ½ FIGURE 11 REF ...

Page 11

... S-52433—Rev. E, 06-Sep- OUT FIGURE 15. Multiplexing, Sampling Application Switch Array Octal Latch Decoder Address Bus 8205 FIGURE 16. Direct Serial Interface (8085) DG485 Vishay Siliconix + – DG485 S 8 DG485 D D OUT To Next S/R Switch Array RS CLK www.vishay.com S FaxBack 408-970-5600 5-11 ...

Related keywords