MAX978 [MAXIM]
Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators; 单/双/四路， SOT23封装，单电源，高速，低功耗比较器
| 型号： | MAX978 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators |
| 文件： | 总8页 (文件大小：122K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1299; Rev 1; 1/98
S in g le /Du a l/Qu a d , S OT2 3 , S in g le -S u p p ly,
Hig h -S p e e d , Lo w -P o w e r Co m p a ra t o rs
67/MAX98
________________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ Single-Supply Operation Down to 2.7V
♦ 20ns Propagation Delay
The MAX976/MAX978/MAX998 dual/quad/single, high-
s p e e d , low-p owe r c omp a ra tors a re op timize d for
+3V/+5V single-supply applications. They achieve a
20ns propagation delay while consuming only 225µA
supply current per comparator. The MAX998 features a
low-power shutdown mode that places the output in a
high-impedance state and reduces supply current to
1nA.
♦ 225µA Supply Current
♦ 1nA Shutdown Supply Current
♦ Rail-to-Rail Outputs
♦ Ground-Sensing Inputs
The MAX976/MAX978/MAX998 inputs have a common-
mode voltage range that extends 200mV below ground.
Their outputs are capable of Rail-to-Rail® operation
without external pull-up circuitry, making these devices
ideal for interface with CMOS/TTL logic. All inputs and
outputs can tolerate a continuous short-circuit fault con-
dition to either rail. The comparators’ internal hysteresis
ensures clean output switching, even with slow-moving
input signals.
♦ Internal Hysteresis Ensures Clean Switching
♦ Available in Space-Saving Packages:
SOT23-6 (MAX998)
µMAX (MAX976)
QSOP-16 (MAX978)
For space-critical applications, the single MAX998 is
available in a 6-pin SOT23 package, the dual MAX976
is available in an 8-pin µMAX package, and the quad
MAX978 is available in a 16-pin QSOP package.
_______________Ord e rin g In fo rm a t io n
SOT
PART
TEMP. RANGE PIN-PACKAGE
TOP MARK
MAX976ESA -40°C to +85°C 8 SO
—
—
________________________Ap p lic a t io n s
Battery-Powered Systems
Threshold Detectors/Discriminators
3V Systems
MAX976EUA -40°C to +85°C 8 µMAX
MAX978ESE
-40°C to +85°C 16 Narrow SO
-40°C to +85°C 16 QSOP
—
MAX978EEE
—
MAX998ESA -40°C to +85°C 8 SO
—
IR Receivers
MAX998EUT-T -40°C to +85°C 6 SOT23-6
AAAO
Digital Line Receivers
___________Typ ic a l Op e ra t in g Circ u it
__________________P in Co n fig u ra t io n s
V
CC
TOP VIEW
V
CC
MAX998
OUT
GND
IN+
1
2
3
6
5
4
V
CC
0.1µF
V
CC
OUT
R
D
SHDN
IN-
GND
SHDN
+
-
MAX998
V
CC
R1
R2
V
CC
SOT23-6
IR RECEIVER
Pin Configurations continued at end of data sheet
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
S in g le /Du a l/Qu a d , S OT2 3 , S in g le -S u p p ly,
Hig h -S p e e d , Lo w -P o w e r Co m p a ra t o rs
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V ).............................................................+6V
SHDN (MAX998).........................................................-0.3V to 6V
8-Pin SO (derate 5.88mW/°C above +70°C).................471mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ..696mW
16-Pin QSOP (derate 8.33mW/°C above +70°C)..........667mW
Operating Temperature Range ..........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
CC
All Other Pins ..............................................-0.3V to (V + 0.3V)
CC
Duration of Output Short Circuit to GND or V ........Continuous
CC
Continuous Power Dissipation (T = +70°C)
A
6-Pin SOT23-6 (derate 7.1mW/°C above +70°C) .........571mW
8-Pin µMAX (derate 4.10mW/°C above +70°C) ............330mW
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V = +2.7V to +5.5V, V = 0V, T = -40°C to +85°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
CC
CM
A
A
PARAMETER
Supply Voltage Range
SYMBOL
CONDITIONS
Inferred from PSRR test
MIN
TYP
MAX
5.5
UNITS
V
CC
2.7
V
V
= 5.5V
= 2.7V
300
225
1
650
CC
Supply Current per Comparator
I
µA
CC
V
CC
Shutdown Supply Current
I
SD
500
nA
dB
V
MAX998 only, SHDN = GND
Power-Supply Rejection Ratio
Common-Mode Voltage Range
Common-Mode Rejection Ratio
PSRR
2.7V < V < 5.5V
CC
63
-0.2
66
100
V
CMR
(Note 2)
V
CC
- 1.2
CMRR
-0.2V ≤ V ≤ (V - 1.2V)
95
dB
CM
CC
T
= +25°C
0.2
±2
±3
A
67/MAX98
Input Offset Voltage
V
V
= 5V (Note 3)
= 5V (Note 4)
mV
OS
CC
T
A
= T to T
MIN MAX
MAX976EUA, MAX998EUT
All others
0.3
0.5
1.5
1.5
75
±5
0.1
0.1
74
90
3
5
mV
Input-Referred Hysteresis
V
HYS
V
CC
4
Input Bias Current
I
300
±100
0.4
0.4
nA
nA
V
B
Input Offset Current
I
OS
OUT Output Voltage High
OUT Output Voltage Low
V
OH
I
= 2mA, V
- V
CC OH
SOURCE
V
OL
I
= 2mA
V
SINK
Sinking
OUT Short-Circuit Current
I
SH
V
CC
= 5.5V
mA
Sourcing
Input Capacitance
C
pF
V
IN
V
MAX998 only
MAX998 only
0.65 x V
CC
SHDN Input Voltage High
SHDN Input Voltage Low
IH
V
0.2 x V
V
IL
CC
MAX998 only, SHDN = GND,
= 0V to V
OUT Leakage Current
SHDN Input Current
Propagation Delay
I
1
200
200
nA
nA
ns
OUT
V
OUT
CC
I
t
MAX998 only
1
28
20
2
SHDN
Overdrive = 5mV
Overdrive = 50mV
C
V
CC
=10pF,
= 5V (Note 5)
LOAD
t
PD
SKEW
40
Propagation-Delay Skew
C
=10pF (Note 6)
ns
LOAD
Propagation-Delay Matching
Between Channels
∆t
MAX976/MAX978 only
=10pF
1
ns
PD
Output Rise/Fall Time
Shutdown Delay Time
t /t
R
C
LOAD
1.6
5
ns
µs
F
t
MAX998 only, V = 5V, I = 10% of typical
CC CC
SD
2
_______________________________________________________________________________________
S in g le /Du a l/Qu a d , S OT2 3 , S in g le -S u p p ly,
Hig h -S p e e d , Lo w -P o w e r Co m p a ra t o rs
67/MAX98
ELECTRICAL CHARACTERISTICS (continued)
(V = +2.7V to +5.5V, V = 0V, T = -40°C to +85°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
CC
CM
A
A
PARAMETER
SYMBOL
CONDITIONS
MAX998 only, V = 5V, I = 90% of typical
MIN
TYP
15
MAX
UNITS
µs
CC
CC
Wake-Up from Shutdown
Power-Up Delay
t
t
EN
(Note 7)
V
CC
= 0V to 5V step, output valid
3
µs
PU
Note 1: The MAX998EUT specifications are 100% tested at T = +25°C. Limits over the extended temperature range are guaran-
A
teed by design, not production tested.
Note 2: Inferred from CMRR test. Either input can be driven to the absolute maximum limit without false output inversion, as long as
the other input is within the common-mode voltage range.
Note 3: V is defined as the mean of trip points. The trip points are the extremities of the differential input voltage required to make
OS
the comparator output change state (Figure 1).
Note 4: The difference between the upper and lower trip points is equal to the width of the input-referred hysteresis zone (Figure 1).
Note 5: Propagation Delay is guaranteed by design. For low overdrive conditions, V
(Figure 1) is added to the overdrive.
TRIP
Note 6: Propagation-Delay Skew is the difference between the positive-going and the negative-going propagation delay.
Note 7: For design purposes, the t can be as high as 60µs.
EN
__________________________________________Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s
(V = +5V, V = 0V, T = +25°C, unless otherwise noted.)
CC
CM
A
SHORT-CIRCUIT OUTPUT CURRENT
vs. TEMPERATURE
SUPPLY CURRENT PER COMPARATOR
vs. TEMPERATURE
OUTPUT LOW VOLTAGE vs.
OUTPUT SINK CURRENT
110
100
90
80
70
60
50
40
30
20
10
1.6
1.4
1.2
375
V
CC
= 5.5V, SOURCING
V
CC
= 5.5V,
V
OUT
= HIGH
325
275
225
175
125
V
V
OUT
= 2.7V,
= HIGH
CC
1.0
0.8
0.6
0.4
V
CC
= 5.5V, SINKING
V
CC
= 2.7V
V
CC
= 2.7V, SOURCING
V
V
OUT
= 5.5V,
= LOW
CC
V
CC
= 5.5V
0.2
0
V
CC
= 2.7V,
V
CC
= 2.7V, SINKING
V
OUT
= LOW
-60 -40 -20
0
20 40 60 80 100
-60 -40 -20
0
20 40 60 80 100
0.1
1
10
100
TEMPERATURE (°C)
TEMPERATURE (°C)
OUTPUT CURRENT (mA)
PROPAGATION DELAY
vs. TEMPERATURE
OUTPUT HIGH VOLTAGE vs.
OUTPUT SOURCE CURRENT
PROPAGATION DELAY
vs. CAPACITIVE LOAD
27
26
25
24
23
22
21
20
19
18
17
6
5
4
3
2
1
0
40
35
30
25
20
15
10
V
C
LOAD
= 50mV
= 15pF
OD
V
CC
= 5.5V
V = 50mV
OD
V
= 2.7V
CC
V
CC
= 2.7V
V
CC
= 5.5V
0.1
1
10
100
-60 -40 -20
0
20 40 60 80 100
10
100
1000
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
CAPACITIVE LOAD (pF)
_______________________________________________________________________________________
3
S in g le /Du a l/Qu a d , S OT2 3 , S in g le -S u p p ly,
Hig h -S p e e d , Lo w -P o w e r Co m p a ra t o rs
______________________________Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s (c o n t in u e d )
(V = +5V, V = 0V, T = +25°C, unless otherwise noted.)
CC
CM
A
INPUT BIAS CURRENT
vs. TEMPERATURE
PROPAGATION DELAY
vs. INPUT OVERDRIVE
TRIP POINTS AND OFFSET VOLTAGE
vs. TEMPERATURE
2.0
1.5
1.0
0.5
0
90
80
70
100
90
80
70
60
50
40
C
LOAD
= 15pF
V
TRIP+
60
50
V
CC
= 5.5V
V
OS
40
30
20
10
-0.5
-1.0
-1.5
-2.0
V
TRIP-
V
= 2.7V
0
CC
0
1
10
INPUT OVERDRIVE (mV)
100
-60 -40 -20
20 40 60 80 100
-60 -40 -20
0
20 40 60 80 100
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT BIAS CURRENT vs.
INPUT COMMON-MODE VOLTAGE
PROPAGATION DELAY
PROPAGATION DELAY
(t = 3V)
(t
V
= 3V)
V
PD+, CC
PD-, CC
MAX976 TOC11
MAX976 TOC12
100
10
1
V
C
LOAD
= 50mV
= 15pF
OD
67/MAX98
V
CC
= 2.7V
V = 5.5V
CC
V
V
IN+
IN+
50mV/div
50mV/div
0.1
V
1V/div
V
1V/div
OUT
OUT
C
V
OD
= 15pF
= 50mV
LOAD
0.01
-1
0
1
2
3
4
5
6
10ns/div
10ns/div
INPUT COMMON-MODE VOLTAGE (V)
PROPAGATION DELAY
PROPAGATION DELAY
(t
V
= 5V)
10MHz RESPONSE
PD+, CC
(t
V
= 5V)
PD-, CC
MAX976 TOC13
MAX976 TOC14
MAX976 TOC15
V
OD
= 50mV
C
LOAD
= 15pF
INPUT
50mV/div
V
OS
V
IN+
V
IN+
50mV/div
50mV/div
V
CC
OUTPUT
2V/div
V
2V/div
OUT
V
2V/div
GND
OUT
V
OD
= 50mV
C
LOAD
= 15pF
10ns/div
10ns/div
20ns/div
4
_______________________________________________________________________________________
S in g le /Du a l/Qu a d , S OT2 3 , S in g le -S u p p ly,
Hig h -S p e e d , Lo w -P o w e r Co m p a ra t o rs
67/MAX98
______________________________Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s (c o n t in u e d )
(V = +5V, V = 0V, T = +25°C, unless otherwise noted.)
CC
CM
A
SHUTDOWN DELAY TIME
WAKE-UP FROM SHUTDOWN
MAX976 TOC17
MAX976 TOC16
V
IN+
> V
IN-
V > V
IN+ IN-
SHDN
2V/div
SHDN
2V/div
V
OUT
V
OUT
2V/div
2V/div
200ns/div
5µs/div
______________________________________________________________P in De s c rip t io n
PIN
MAX976
MAX978
MAX998
NAME
FUNCTION
SO/µMAX SO/QSOP SOT23-6
SO
3
1, 3
2, 4
5
1, 3, 5, 7
2, 4, 6, 8
9, 13
3
4
2
IN_+
IN_-
Comparator Noninverting Input
2
Comparator Inverting Input
Ground
4
GND
10, 11,
14, 15
6, 7
1
6
OUT_
Comparator Output
8
12, 16
—
6
7
V
Supply Voltage, +2.7V to +5.5V
CC
—
—
1, 5
N.C.
No Connection. Not internally connected.
Shutdown Input. Drive low for shutdown mode. Drive high or con-
nect to V for normal operation.
CC
—
—
5
8
SHDN
Either input can be driven to the Absolute Maximum
Ratings limit without false output inversion, as long as
the other input is within the Common-Mode Voltage
Range. Their push/pull output structure is capable of
rail-to-rail operation without external pull-up circuitry,
ma king the s e d e vic e s id e a l for inte rfa c ing with
CMOS/TTL logic. All inputs and outputs can tolerate a
continuous short-circuit fault condition to either supply.
The comparator’s internal hysteresis ensures clean out-
put switching, even with slow-moving input signals.
__________________De t a ile d De s c rip t io n
The MAX976/MAX978/MAX998 dual/quad/single com-
parators operate from a single +2.7V to +5.5V supply.
They achieve a 20ns propagation delay while consum-
ing only 225µA of supply current per comparator. The
MAX998 features a low-power shutdown mode that
p la c e s the outp ut in a hig h-imp e d a nc e s ta te a nd
re d uc e s s up p ly c urre nt to 1nA. Ac tiva te s hutd own
mode by driving SHDN low.
The MAX976/MAX978/MAX998 comparator inputs have
a common-mode voltage range of -0.2V to (V - 1.2V).
CC
_______________________________________________________________________________________
5
S in g le /Du a l/Qu a d , S OT2 3 , S in g le -S u p p ly,
Hig h -S p e e d , Lo w -P o w e r Co m p a ra t o rs
affecting comparator operation. Likewise, do not three-
Hys t e re s is
High-speed comparators can oscillate in the linear
operating region because of noise or undesired para-
sitic feedback. This tends to occur when the voltage on
one input is equal to or very close to the voltage on the
other input. The MAX976/MAX978/MAX998 have inter-
nal hysteresis to counter parasitic effects and noise.
The hysteresis in a comparator creates two trip points:
one for the rising input voltage and one for the falling
input voltage (Figure 1). The difference between the trip
points is the hysteresis. When the comparator input
voltages are equal, the hysteresis effectively causes
one comparator input voltage to move quickly past the
other, taking the input out of the region where oscilla-
tion occurs.
state SHDN. Due to the output leakage currents of
three-state devices and the small internal current for
SHDN, three-stating this pin could also result in indeter-
minate logic levels.
The maximum input voltage for SHDN is 6V, referred to
GND, and is not limited by V . This allows the use of
CC
5V logic to drive SHDN while V
operates at a lower
volta g e , s uc h a s 3V. The log ic thre s hold limits for
CC
SHDN a re p rop ortiona l to V
(s e e Ele c tric a l
CC
Characteristics).
_____________Ap p lic a t io n s In fo rm a t io n
Circ u it La yo u t a n d Byp a s s in g
The MAX976/MAX978/MAX998 have a high-gain band-
width and require careful board layout. We recommend
the following design guidelines:
Figure 1 illustrates the case where IN- has a fixed volt-
a g e a p p lie d a nd IN+ is va rie d . If the inp uts we re
reversed, the figure would be the same, except with an
inverted output.
1) Use a printed circuit board with an unbroken, low-
inductance ground plane. Surface-mount compo-
nents are recommended.
In p u t -S t a g e Circ u it ry
The MAX976/MAX978/MAX998 input common-mode
2) Pla c e a d e c oup ling c a p a c itor (a 0.1µF c e ra mic
voltage range is from -0.2V to (V - 1.2V). The voltage
CC
c a p a c itor is a g ood c hoic e ) b e twe e n V
ground as close to the pins as possible.
a nd
CC
range for each comparator input extends to both V
CC
and GND. The output remains in the correct logic state
while one or both of the inputs are within the common-
mode range. If both input levels are out of the common-
mode range, input-stage current saturation occurs, and
the output becomes unpredictable.
67/MAX98
3) Keep lead lengths short on the inputs and outputs
to avoid unwanted parasitic feedback around the
comparators.
4) Solder the devices directly to the printed circuit
board instead of using a socket.
S h u t d o w n Mo d e
The MAX998 features a low-power shutdown mode,
which is activated by forcing SHDN low. Shutdown
mode reduces the supply current to 1nA (typical), dis-
ables the comparator, and places the output in a high-
imp e d a nc e s ta te . Drive SHDN hig h to e na b le the
comparator. Do not leave SHDN unconnected. Since it
is a high-impedance input, leaving SHDN unconnected
could result in indeterminate logic levels, adversely
5) Minimize input impedance.
6) For slowly varying inputs, use a small capacitor
(~1000pF) across the inputs to improve stability.
Ad d it io n a l Hys t e re s is
Ge ne ra te a d d itiona l hys te re s is with thre e re s is tors
using positive feedback, as shown in Figure 2. This
p os itive fe e d b a c k me thod s lows the hys te re s is
response time. Calculate resistor values as follows:
1) Select R3. The leakage current of IN+ is typically
75nA, so the current through R3 should be at least
1.0µA to minimize errors caused by leakage current.
V
HYST
V
TRIP+
The current through R3 at the trip point is (V
-
REF
V
+ V
TRIP-
TRIP+
V
=
OS
V
IN+
V ) / R3. Consider the two possible output states
OUT
2
V
TRIP-
V = 0
IN-
when solving for R3. The two formulas are:
R3 = V / 1.0µA
REF
or
R3 = (V - V ) / 1.0µA
V
OH
COMPARATOR
OUTPUT
CC
REF
V
OL
Use the smaller of the two resulting resistor values.
For example, if V = 1.2V and V = 5.0V, the two
REF
CC
resistor values are 1.2MΩ and 3.8MΩ. Choose a
standard value for R3 of 1.2MΩ.
Figure 1. Input and Output Waveforms, Noninverting Input
Varied
6
_______________________________________________________________________________________
S in g le /Du a l/Qu a d , S OT2 3 , S in g le -S u p p ly,
Hig h -S p e e d , Lo w -P o w e r Co m p a ra t o rs
67/MAX98
Win d o w Co m p a ra t o r
V
CC
R3
The MAX976 is ideal for making a window detector
(undervoltage/overvoltage detector). The schematic
shown in Figure 3 uses a MAX6120 reference and com-
ponent values selected for a 2.0V undervoltage thresh-
old and a 2.5V overvoltage threshold. Choose different
thresholds by changing the values of R1, R2, and R3.
OUTA provides an active-low undervoltage indication,
and OUTB gives an active-low overvoltage indication.
ANDing the two outp uts p rovid e s a n a c tive -hig h,
power-good signal. The design procedure is as follows:
R1
0.1µF
V
IN
V
CC
OUT
R2
GND
MAX976
MAX978
MAX998
V
REF
1) Select R1. The leakage current into INB- is normally
75nA, so the current through R1 should exceed
1.0µA for the thresholds to be accurate. R1 values in
the 50kΩ to 100kΩ range are typical.
Figure 2. Additional Hysteresis
2) Choose the hysteresis band required (V ). For this
HB
example, choose 100mV.
2) Choose the overvoltage threshold (V ) when V
OTH IN
is rising, and calculate R2 and R3 with the following
formula:
3) Calculate R1. R1 = R3 x (V / V ). Plugging in the
HB
CC
values for this example,
R
= R2 + R3 = R1 x [V
/ (V
+ V ) - 1]
R1 = 1.2MΩ x (100mV / 5.0V) = 24kΩ
SUM
OTH
REF H
where V = 1/2V
.
4) Choos e the trip p oint for V ris ing . This is the
IN
HYST
H
threshold voltage at which the comparator switches
3) Choose the undervoltage threshold (V
) when V
IN
UTH
from low to high as V rises above the trip point. In
IN
is falling, and calculate R2 with the following formula:
this example, choose 3.0V.
5) Calculate R2 as follows:
R2 = (R1 + R ) x [(V - V ) / V ] - R1
SUM
REF
H
UTH
where V = 1/2V
.
H
HYST
1
4) Calculate R3 with the following formula:
R3 = (R ) - R2
R2 =
V
1
1
THR
x R1
SUM
−
−
V
R1
R3
REF
5) Verify the resistor values. The equations are as follows:
= (V + V ) x (R1 + R2 + R3) / R1
1
V
OTH
REF
H
R2 =
= 16.2kΩ
3.0V
1.2 x 24kΩ
1
1
V
UTH
= (V
- V ) x (R1 + R2 + R3) / (R1 + R2)
REF H
−
−
24kΩ
1.2M
V
CC
R3
82.1k, 1%
Choose a standard value for R2 of 16kΩ.
6) Verify the trip voltage and hysteresis as follows:
1
2
0.1µF
V
IN
8
1/2
UNDERVOLTAGE
R2
1
1
1
24.9k,
1%
MAX976
7
V
rising : V
= V
x R1 x
+
+
IN
THR
REF
5
V
CC
R1
R2
R3
1
R1 x V
POWER GOOD
CC
V
falling : V
= V
−
IN
THF
THR
R3
3
4
2
MAX6120
3
Hysteresis = V
− V
THF
THR
1/2
6
OVERVOLTAGE
MAX976
IR Re c e ive r
The Typical Operating Circuit shows an application using
the MAX998 as an infrared receiver. The infrared photo-
diode creates a current relative to the amount of infrared
R1
100k,
1%
light present. This current creates a voltage across R .
D
When this voltage level crosses the voltage applied by the
voltage divider to the inverting input, the output transitions.
Figure 3. Window Comparator
_______________________________________________________________________________________
7
S in g le /Du a l/Qu a d , S OT2 3 , S in g le -S u p p ly,
Hig h -S p e e d , Lo w -P o w e r Co m p a ra t o rs
______________________________________________P in Co n fig u ra t io n s (c o n t in u e d )
TOP VIEW
MAX978
MAX976
MAX998
INA+
INA-
INB+
INB-
INC+
INC-
IND+
IND-
1
2
3
4
5
6
7
8
16 V
CC
+
-
15 OUTA
14 OUTB
13 GND
INA+
INA-
INB+
INB-
1
2
3
4
8
7
6
5
V
CC
N.C.
IN-
1
2
3
4
8
7
6
5
SHDN
+
-
+
-
OUTA
OUTB
GND
V
CC
+
-
-
+
IN+
OUT
N.C.
12
V
CC
+
-
GND
11 OUTC
10 OUTD
+
-
SO/µMAX
SO
9
GND
SO/QSOP
___________________Ch ip In fo rm a t io n
TRANSISTOR COUNT: 415 (MAX976)
830 (MAX978)
300 (MAX998)
67/MAX98
________________________________________________________P a c k a g e In fo rm a t io n
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
8 _____________________Ma x im In t e g ra t e d P ro d u c t s , 1 2 0 S a n Ga b rie l Drive , S u n n yva le , CA 9 4 0 8 6 4 0 8 -7 3 7 -7 6 0 0
© 1998 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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