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DG485 데이터시트 PDF




Vishay Siliconix에서 제조한 전자 부품 DG485은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 DG485 기능
기능 Octal Analog Switch Array
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DG485 데이터시트, 핀배열, 회로
Octal Analog Switch Array
DG485
Vishay Siliconix
FEATURES
D Low On-Resistance: 55 W
D Rail-to-Rail Analog Input Range
D Serial Interface
D Low-Power—PD: 35 nW
D TTL and CMOS Compatible
D Any Combination of 8 SPST to the
Output
D High Speed—tON: 170 ns
BENEFITS
APPLICATIONS
D Low Signal Distortion
D Devices Can Be Chained for System
Expansion
D Reduced Board Space
D Reduced Switch Errors
D Reduced Power Supply
Requirements
D Simple Interfacing
D Audio Switching and Routing
D Audio Teleconferencing
D Data Acquisition and Industrial
Process Control
D Battery Powered Remote Systems
D Automotive, Avionics and ATE
Systems
D Summing Amplifiers
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 (rDS(on) 55 W, typ.)
and fast switching (tON: 170 ns, typ.), the DG485 is ideally
suited for data acquisition, process control, communication,
and avionic applications.
serial output (DOUT) allow daisy chaining of multiple arrays for
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.
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 (DIN) and
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.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
Dual-In-Line
PLCC and LCC
LD
VL
S4
S3
S2
S1
V+
DIN
CLK
1
2
3
4
5
6
7
8
9
Shift Register
Latches
18 RS
17 GND
16 D
15 S5
14 S6
13 S7
12 S8
11 V–
10 DOUT
Document Number: 70065
S-52433—Rev. E, 06-Sep-99
Top View
3 2 1 20 19
S4 4
S3 5
S2 6
S1 7
V+ 8
Shift Register/Latches
9 10 11 12 13
18 D
17 S5
16 S6
15 S7
14 S8
Top View
www.vishay.com S FaxBack 408-970-5600
5-1




DG485 pdf, 반도체, 판매, 대치품
DG485
Vishay Siliconix
SPECIFICATIONSa
Test Conditions
Unless Otherwise Specified
A Suffix
–55 to 125_C
D Suffix
–40 to 85_C
Parameter
Symbol
Dynamic Characteristics (Cont’d)
V+ = 15 V, V– = –15 V
VL = 5 V, VIN = 2.4 V, 0.8 Vf
Tempb Typc Mind Maxd Mind Maxd Unit
Source Off
Capacitancee
Drain Off Capacitancee
On-State Capacitancee
CS(off)
CD(off)
CD(on)
Vgen = 0 V, Rgen = 0 W, f = 1 MHz
Vgen = 0 V, Rgen = 0 W, f = 1 MHz One
Channel On
Vgen = 0 V, Rgen = 0 W, f = 1 MHz All Chan-
nels On
Room
Room
Room
Room
7
43
53
122
pF
Power Supplies
Positive Supply
Current
Negative Supply
Current
Logic Supply Current
Ground Current
I+
I–
IL
IGND
V+ = 16.5 V, V– = –16.5 V
VIN = 0 or 5 V, VL = 5.25 V
DOUT Open
Room
Full
0.001
3
10
3
10
Room –0.001
–3
–3
Full –10 –10
mA
Room
0.001
3
3
Full 10 10
Room
Full
–0.001
–3
–10
–3
–10
Notes:
a. Refer to PROCESS OPTION FLOWCHART.
b. Room = 25_C, Full = as determined by the operating temperature suffix.
c. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
d. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
e. Guaranteed by design, not subject to production test.
f. VIN = input voltage to perform proper function.
rDS(on) MAX – rDS(on) MIN
ǒ Ǔg. For each VD : DrDS(on) +
rDS(on) AVE
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
1 mA
100 nA
10 nA
1 nA
100 pA
10 pA
Supply Currents vs. Temperature
V+ = 15 V
V– = –15 V
VL = 5 V
INEG
IPOS
IL
IGND
1 pA
0.1 pA
–50 –30 –10 10 30 50 70
Temperature (_C)
90 110 130
www.vishay.com S FaxBack 408-970-5600
5-4
rDS(on) vs. VD and Power Supply Voltage
160
140 VL = 5 V
IS = –5 mA
120
100 "5 V
80
"8 V
60 "10 V
40
"12 V
20 "15 V
"20 V
0
–20
–15 –10 –5 0
5 10
VD – Drain Voltage (V)
15 20
Document Number: 70065
S-52433—Rev. E, 06-Sep-99

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DG485 전자부품, 판매, 대치품
TIMING DIAGRAMS
CLOCK
DATA
50%
50%
tDH
tDS
FIGURE 4. Data Setup and Hold Time
DG485
Vishay Siliconix
CLOCK
RS
LOAD
tLH tRH
FIGURE 5. Timing Relationships
RS
DIN
CLK
LD
S1
S2
S3
S4
S5
S6
S7
S8
DOUT
S1 – S8 and DOUT are expected output with the drain connected high. The sources require pull-down of 1 kW.
FIGURE 6.
tDRC
Document Number: 70065
S-52433—Rev. E, 06-Sep-99
www.vishay.com S FaxBack 408-970-5600
5-7

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