Semiconductor
HS-1840RH
Rad-Hard 16 Channel CMOS Analog
Multiplexer with High-Z Analog Input Protection
September 1997
Features
Description
• Radiation Environment
The HS-1840RH is a radiation hardened, monolithic 16
channel multiplexer constructed with the Harris Linear
Dielectric Isolation CMOS process. It is designed to provide
a high input impedance to the analog source if device power
fails (open) or the analog signal voltage inadvertently
exceeds the supply rails during powered operation. Excellent
for use in redundant applications, since the secondary
device can be operated in a standby unpowered mode
affording no additional power drain. More significantly, a very
high impedance exists between the active and inactive
devices preventing any interaction. One of sixteen channel
selection is controlled by a 4-bit binary address plus an
Enable-Inhibit input which conveniently controls the ON/OFF
operation of several multiplexers in a system. All digital
inputs have electrostatic discharge protection.
(γ)
- Gamma Rate
1 x 108 RAD(Si)/s
tle (HS-1840RH)
- Gamma Dose (γ) 2 x 105 RAD(Si)
bject (Rad-Hard 16 Channel CMOS Analog
• Low Power Consumption
tiplexer with High-Z Analog Input Protection)
• Fast Access Time 1000ns
thor ()
ywords ()
eator ()
• High Analog Input Impedance 500MΩ
During Power Loss (Open)
• Dielectrically Isolated Device Islands
• Excellent In Hi-Rel Redundant Systems
OCINFO pdfmark
• Break-Before-Make Switching
• No Latch-Up
ageMode /UseOutlines
Ordering Information
OCVIEW pdfmark
The HS-1840RH has been specifically designed to meet
exposure to radiation environments. It is available in a 28
lead Ceramic Sidebraze dual-in-line package and 28 lead
Ceramic Flatpack. It is guaranteed operational from -55oC to
+125oC.
PART
TEMP.
PKG.
NO.
o
NUMBER
RANGE ( C)
PACKAGE
HS1-1840RH-Q
-55 to 125 28 Ld CERDIP
-55 to 125 28 Ld CERDIP
-55 to 125 28 Ld CERDIP
HS1-1840RH-8
HS1-1840RH/Proto
HS1-1840RH/Sample
HS9-1840RH-Q
25
28 Ld CERDIP
-55 to 125 28 Ld FP
-55 to 125 28 Ld FP
-55 to 125 28 Ld FP
HS9-1840RH-8
HS9-1840RH/Proto
HS9-1840RH/Sample
25
28 Ld FP
Pinouts
HS1-1840RH 28 LEAD SIDEBRAZE CERDIP
HS9-1840RH 28 LEAD CERAMIC SIDEBRAZE CASE FLATPACK
CASE OUTLINE GDIP1-T28, COMPLIANT TO MIL-STD-
OUTLINE CDFP3-F28, COMPLIANT TO MIL-STD-1835 PACKAGE
1835 PACKAGE
TOP VIEW
TOP VIEW
+VS
NC
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
OUT
-VS
+VS
NC
1
2
3
4
5
6
7
8
9
28 OUT
27 -VS
26 IN 8
25 IN 7
24 IN 6
23 IN 5
22 IN 4
21 IN 3
2
NC
IN 8
3
IN 16
IN 7
4
NC
IN 15
IN 6
5
IN 16
IN 15
IN 14
IN 13
IN 12
IN 11
IN 14
IN 5
6
IN 13
IN 4
7
IN 12
IN 3
8
IN 11
IN 2
9
IN 10
IN 1
10
11
12
13
14
IN 9
ENABLE
ADDR A0
ADDR A1
ADDR A2
20
IN 2
GND
(+5VS) VREF
ADDR A3
IN 10 10
IN 9 11
19 IN 1
18 ENABLE
17 ADDR A0
16 ADDR A1
15 ADDR A2
GND 12
(+5VS) VREF 13
ADDR A3 14
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
File Number 3992.1
Spec Number 518022
Copyright © Harris Corporation 1997
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