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National Semiconductor Electronic Components Datasheet

MM454 Datasheet

four-channel commutator

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Analog Switches
MM454/MM554 four-channel commutator
general description
The fIiIM454/MM554 IS a four-channel analog com-
mutator capable of switching four analog input
channels sequentially onto an output line. The
device is constructed on a single silicon chip using
MaS P Channel enhancement transistors; it con-
tains all the digital cirCUitry necessary to sequen-
tially turn ON the four analog switch transistors
permitting multiplexing of the analog input data.
The device features:
• High Analog Voltage Handling
• High Commutating Rate
• Low Leakage Current (TA = 25° C)
(TA = 85°C)
±10V
500 kHz
200pA
50nA
• All Channel Blanking input provided
• Reset capability provided
• Low ON Resistance
200n
In addition, the MM454/MM554 can easily be
applied where submultiplexing is required since a
4: 1 clock countdown signal is provided which can
drive the clock input of subsequent MM454/MM554
units.
The MM454 is specified for operation over the
-55°C to +125°C military temperature range. The
MM554 is specified for operation over the -25°C
to +70°C temperature range.
schematic and connection diagrams
ANALOG
INPUTS
4
'ANALOG
OUTPUT
CLOCK
INPUT
RESET-- --.... ------.....J
OUTPUT
41
COUNTDOWN
NOCONIIIEeno ..
v••
CLOCKI.PUl
" v••
" OU11'UT41COUfilTDOWN
IZ NO 1 Ali/lUG IIiIPUT
RESET
NO ZA,.ALOGIIiI'UT
ALL CHAIINELILANKING
NO 3ANALOIIINPUT
NOCOIIN£CTlOIil
NO 4ANALD61NPUT
V" ANALOBOUTPUT
Note: Pin 1 connected to elSe and to deVIce bulk. Noflll\al Operabng VoltagBI
VOG =-24Y. VDD -OV;Vss s+12V,RESET BIAS=+12V (DVfor RESET)
ALL CHANNEL BLANKING BIAS" +12V (QV for BLANKING)
Order Number MM454F or MM654F
Se. Package 4
8-35


National Semiconductor Electronic Components Datasheet

MM454 Datasheet

four-channel commutator

No Preview Available !

absolute maximum ratings (Note 11
Gate Voltage (V GG 1
Bulk Voltage (Vss 1
Analog Input (V IN 1
Power Dissipation
Operating Temperature MM454
MM554
Storage Temperature
+lOV to -30V
+10V
+10V to -20V
200mW
_55°C to +125°C
_25°C to +70°C
_65°C to +150°C
static characteristics (Note 2)
PARAMETER
Analog Input Voltage
ON ReSistance
ON ReSIStance
OFF Resistance
Analog Input Leakage Current MM454
MM454
MM554
MM554
Analog Output Leakage Current MM454
MM454
MM554
MM554
V55 Supply Current Drdln
V GG Supply Current Drain
CONDITION
V'N = -10V
V'N = Vss
TA =25°C
TA =85°C
TA =25°C
TA =lO°C
TA =25°C
T A =85°C
TA =25°C
TA =lO°C
Vss = +12V
VGG = -24V
MIN
TYP
170
90
10 10
050
006
0001
.030
0100
30
000.1
.030
3.8
2.4
MAX
± 10
600
200
100
1.0
100
1.0
100
1.0
100
1.0
5.5
3.5
capacitance characteristics
PARAMETER
Analog Input Capacitance Channel OFF
Analog Input Capacitance Channel ON
Analog Output Capacitance
Clock Input
Reset Input
Blanking Input
CONDITION
liN =a
liN =0
liN = 0
VcL =+12V
VAESET = +12V
VBLANK = +12V
MIN
TYP
4
20
20
2.0
20
20
MAX
6
24
24
UNITS
V
12
12
12
nA
/1A
nA
/1A
nA
/1A
nA
/1A
mA
mA
UNIT
pF
pF
pF
pF
pF
pF
clock characteristics (Note 3)
PARAMETER
Clock Input (HIGH)(')
Clock Input (LOW)
Clock Input Rise Time (POS GOING)
Clock Input Fall Time (NEG GOING)
Countdown Output (POS) V OH
Countdown Output (NEG) VOL
Maximum Commutation Rate
Vss
CONDITION
MIN
TYP
MAX
Vss - 2
-5
Vss
0 +5
No requirement
20
Vss -2
Vss
0
05 2.0
+100
+12
+14
Note 1: Maximum ratings are limiting values above which the device may be damaged. All voltages
referenced to VOO "" O.
Note 2: These speCifications apply over the Indicated o~eratmg temperature range for VGG = -24V,
av.VDD =
VSS = +12V, VRESET = +12V, V8LANK = +12V ON reSIStance measured at 1 mA,
OFF resistance and leakage measured With all analog Inputs and output common Capacitance measured
at 1 MHz.
Note 3: Operating conditions In Note 2 apply. VSS to VOO (OV) voltage IS applied to counting and
gating Circuits VGG IS required only for analog SWitch biasing' All logic Inputs are high resistance and
are essentially capaCitive.
Note 4: LogiC Input voltage must not be more positive than VSS.
8·36
UNIT
V
V
~sec
V
V
MHz
V


Part Number MM454
Description four-channel commutator
Maker National Semiconductor
Total Page 3 Pages
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