338
8-C
HANNEL
M
ULTIPLEXER
A0
EN
V-
NO1
NO2
NO3
NO4
COM
8
9
1
16
A1
A2
GND
NO1
NO2
NO3
NO4
NO5
NO6
NO7
NO8
CMOS DECODE LOGIC
COM
V+
V-
GND
SEi
Maxwell
338
338RP
V+
NO5
NO6
NO7
NO8
A2
A1
A0
EN
F
EATURES
:
• R
AD
-P
AK
® Technology hardened against
natural space radiation
• Total dose hardness >100 Krads (Si),
dependent upon orbit
• Package:
-16 Pin R
AID
-P
AK
® flat pack
• On-resistance, <400 Ohms max
• Transition time, <500ns
• On-resistance match, <10 Ohms
• NO-Off leakage current, <20pA at 25
o
C
• 1.5pC charge injection
• Single-supply operation (4.5V to 30V)
bipolar-supply operation (±4.5V to
±20V)
• Plug-in upgrade for industry-standard
DG508A/DG509A
• Rail-to-rail signal handling
• TTL/CMOS-logic compatible
D
ESCRIPTION
:
Memory
Maxwell Technologies’ 338 monolithic, CMOS
analog multiplexer features the 338 is
designed to connect one of eight inputs to a
common output by control of a 3-bit binary
address, and may be used as either a mux or
a demux. On-resistance is 400 ohms max,
and the it conducts current equally well in both
directions. These muxes feature extremely
low off leakages (less than 20pA at 25°C), and
extremely low on-channel leakages (less than
50pA at 25°C). The new design offers guaran-
teed low charge injection (1.5pC typ) and elec-
trostatic discharge (ESD) protection greater
than 2000V, per method 3015.7. The 338
operates from a single 4.5V to 30V supply or
from dual supplies of ±4.5V to ±20V. All control
inputs (whether address or enable) are TTL
compatible (0.8V to 2.4V) over the full speci-
fied temperature range and over the ±4.5V to
±18V supply range. Capable of surviving
space environments, the 338 is ideal for satel-
lite, spacecraft, and space probe missions.
The patented radiation-hardened
R
AD
-P
AK
®
technology incorporates radiation shielding in
the microcircuit package. It eliminates box
shielding while providing required lifetime in
orbit. This product is available up to Class S
packaging and screening.
09.12.02 Rev 3
All data sheets are subject to change without notice
1
(858)503- 3000 Fax: (858) 503-3100 - www.maxwell.com
©2002 Maxwell Technologies Inc..
All rights reserved.
338
P
ARAMETER
Voltage Referenced to V-
V+
GND
Digital Inputs, NO, COM
Continuous Current (any terminal)
Peak Current, NO or COM
(pulsed at 1ms, 10% duty cycle max)
Operating Temperature Ranges
Storage Temperature Range
Lead Temperature (soldering, 10sec)
8-C
HANNEL
M
ULTIPLEXER
T
ABLE
1. A
BSOLUTE
M
AXIMUM
R
ATINGS
S
YMBOL
--
-0.3
-0.3
--
--
--
--
--
--
V- -2
--
--
-55
-65
--
44
25
V+ +2
30
100
125
150
300
V
mA
mA
o
C
o
C
o
C
M
IN
M
AX
U
NITS
V
T
ABLE
2. 338RP E
LECTRICAL
C
HARACTERISTICS
- S
INGLE
S
UPPLY
Memory
(V+ = +12V, V- = 0V, V
AH
= 2.4V, V
AL
= 0.8V, T
A
= T
MIN TO
T
MAX
,
UNLESS OTHERWISE SPECIFIED
)
P
ARAMETER
SWITCH
Analog Signal Range V
NO
, V
COM
On-Resistance
R
ON
I
NO
= 0.2mA
V
COM
= 3V or 10V
T
A
= 25
o
C
V
NO1
= 8V V
NO8
= 0V
V
IN
= 2.4V T
A
= 25
o
C
V
INH
= 2.4V V
INL
= 0V
V
NO1
= 5V T
A
= 25
o
C
V
INH
= 2.4V V
INL
= 0V
V
NO1
= 5V T
A
= 25
o
C
CL = 100pF
V
NO
= 0V
R
S
= 0 Ohms
TA = 25C
9
1, 2, 3
0
--
--
460
12
650
V
S
YMBOL
C
ONDITIONS
S
UBGROUPS
M
IN
T
YP 1
M
AX
U
NITS
DYNAMIC
Transition Time
t
TRANS
--
210
500
ns
Enable Turn-On Time
Enable Turn-Off Time
Charge Injection
2
t
ON(EN)
t
OFF(EN)
Q
9
9
--
--
--
280
110
1.8
500
500
5
ns
ns
pC
1. The algebraic convention where the most negative value is a minimum and the most positive value a
maximum is used in this data sheet.
2. Guaranteed by Design
09.12.02 Rev 3
All data sheets are subject to change without notice
2
©2002 Maxwell Technologies Inc.
All rights reserved.
338
P
ARAMETER
DYNAMIC
Transition Time
Break-Before-Make
Interval
Enable Turn-On Time
t
TRANS
t
OPEN
t
ON(EN)
Figure 2.
Figure 4.
Figure 3.
T
A
= 25
o
C
T
A
= 25
o
C
T
A
= 25
o
C
T
A
= T
MIN
to
T
MAX
Enable Turn-Off Time
t
OFF(EN)
Figure 3.
T
A
= 25
o
C
T
A
= T
MIN
to
T
MAX
Off Isolation
5,6
V
ISO
V
EN
= 0V, R
L
= 1KW, T
A
= +25
o
C
f = 100kHz
V
EN
= 2.4V, f = 100kHz,
T
A
= +25
o
C
V
GEN
= 1Vp-p, R
L
= 1kW
f = 1MHz, T
A
= +25
o
C
f = 1MHz, V
EN
= V
NO
=
0V
T
A
= +25
o
C, Figure 8.
S
YMBOL
C
ONDITIONS
8-C
HANNEL
M
ULTIPLEXER
T
ABLE
3. E
LECTRICAL
C
HARACTERISTICS
- D
UAL
S
UPPLIES
(V+ = 15V, V- = -15V, GND = 0V, V
AH
= 2.4V, V
AL
= 0.8V, T
A
= T
MIN TO
T
MAX
,
UNLESS OTHERWISE SPECIFIED
)
S
UBGROUPS
M
IN
T
YP 1
200
140
160
--
100
--
-75
M
AX
U
NITS
9
9
9
10, 11
9
10, 11
4
--
10
--
--
--
--
--
500
--
500
750
500
750
--
ns
ns
ns
ns
dB
Crosstalk Between
Channels
Logic Input Capaci-
tance
NO-Off Capacitance
V
CT
4
--
-92
--
dB
Memory
C
IN
C
NO(OFF)
--
--
2
3
--
--
pF
pF
COM-Off Capacitance
C
COM(OFF)
f = 1MHz, V
EN
= 0.8V
T
A
= +25
o
C, V
COM
= 0V,
Figure 8.
C
COM(ON)
f = 1MHz, V
EN
= 2.4V,
T
A
= +25
o
C
V
COM
= 0V, Figure 8
--
11
--
pF
COM-On Capacitance
--
16
--
pF
1. The algebraic convention where the most negative value is a minimum and the most positive value a
maximum is used in this data sheet.
2. Characterized and not 100% tested.
3. DR
ON
= R
ON(MAX)
- R
ON(MIN)
.
4. Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed at 25
o
C.
5. Guaranteed by design.
6. Worst-case isolation is on channel 4 because of its proximity to the drain pin. Isolation = 20logV
COM
/V
NO
,
where V
COM
= output and V
NO
= input to off switch.
09.12.02 Rev 3
All data sheets are subject to change without notice
4
©2002 Maxwell Technologies Inc.
All rights reserved.
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