Semiconductor
N
September 1997
NEW
OR
DF
H
NDE 1840AR
E
OMM e HS-
REC
Se
OT
IGN
DES
S
HS-1840RH
Rad-Hard 16 Channel CMOS Analog
Multiplexer with High-Z Analog Input Protection
Description
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.
PKG.
NO.
Features
• Radiation Environment
- Gamma Rate (γ) 1 x 10
8
RAD(Si)/s
tle (HS-1840RH)
- Gamma Dose (γ) 2 x 10
5
RAD(Si)
bject (Rad-Hard 16
Power Consumption
Channel CMOS Analog
• Low
tiplexer with
•
High-Z Analog Input Protection)
Fast Access Time 1000ns
thor ()
• High Analog Input Impedance 500MΩ
During Power Loss (Open)
ywords ()
• Dielectrically Isolated Device Islands
eator ()
• Excellent In Hi-Rel Redundant Systems
OCINFO pdfmark
• Break-Before-Make Switching
• No Latch-Up
ageMode /UseOutlines
PART
NUMBER
HS1-1840RH-Q
HS1-1840RH-8
HS1-1840RH/Proto
HS1-1840RH/Sample
HS9-1840RH-Q
HS9-1840RH-8
HS9-1840RH/Proto
HS9-1840RH/Sample
TEMP.
RANGE (
o
C)
-55 to 125
-55 to 125
-55 to 125
25
-55 to 125
-55 to 125
-55 to 125
25
Ordering Information
OCVIEW pdfmark
PACKAGE
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
28 Ld FP
28 Ld FP
28 Ld FP
28 Ld FP
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 -55
o
C to
+125
o
C.
Pinouts
HS1-1840RH 28 LEAD SIDEBRAZE CERDIP
CASE OUTLINE GDIP1-T28, COMPLIANT TO MIL-STD-
1835 PACKAGE
TOP VIEW
+VS 1
NC 2
NC 3
IN 16 4
IN 15 5
IN 14 6
IN 13 7
IN 12 8
IN 11 9
IN 10 10
IN 9 11
GND 12
(+5VS) VREF 13
ADDR A3 14
28 OUT
27 -VS
26 IN 8
25 IN 7
24 IN 6
23 IN 5
22 IN 4
21 IN 3
20 IN 2
19 IN 1
18 ENABLE
17 ADDR A0
16 ADDR A1
15 ADDR A2
HS9-1840RH 28 LEAD CERAMIC SIDEBRAZE CASE FLATPACK
OUTLINE CDFP3-F28, COMPLIANT TO MIL-STD-1835 PACKAGE
TOP VIEW
+VS
NC
NC
IN 16
IN 15
IN 14
IN 13
IN 12
IN 11
IN 10
IN 9
GND
(+5VS) VREF
ADDR A3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
OUT
-VS
IN 8
IN 7
IN 6
IN 5
IN 4
IN 3
IN 2
IN 1
ENABLE
ADDR A0
ADDR A1
ADDR A2
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
©
Harris Corporation 1997
File Number
Spec Number
1
3992.1
518022
HARRIS [ HARRIS CORPORATION ]
