Maxim MAX6314US45D4-T 68hc11/bidirectional-compatible î¼p reset circuit Datasheet

19-1090; Rev 1; 1/99
68HC11/Bidirectional-Compatible
µP Reset Circuit
Features
The MAX6314 low-power CMOS microprocessor (µP)
supervisory circuit is designed to monitor power
supplies in µP and digital systems. The MAX6314’s
RESET output is bidirectional, allowing it to be directly
connected to µPs with bidirectional reset inputs, such
as the 68HC11. It provides excellent circuit reliability
and low cost by eliminating external components and
adjustments. The MAX6314 also provides a debounced
manual reset input.
♦ Small SOT143 Package
This device performs a single function: it asserts a reset
signal whenever the VCC supply voltage falls below a
preset threshold or whenever manual reset is
asserted. Reset remains asserted for an internally programmed interval (reset timeout period) after VCC has
risen above the reset threshold or manual reset is
deasserted.
The MAX6314 comes with factory-trimmed reset
threshold voltages in 100mV increments from 2.5V
to 5V. Preset timeout periods of 1ms, 20ms, 140ms,
and 1120ms (minimum) are also available. The device
comes in a SOT143 package.
For a µP supervisor with an open-drain reset pin, see
the MAX6315 data sheet.
♦ Four Reset Timeout Periods Available:
1ms, 20ms, 140ms, or 1120ms (minimum)
♦ RESET Output Simplifies Interface to
Bidirectional Reset I/Os
♦ Precision Factory-Set VCC Reset Thresholds:
100mV Increments from 2.5V to 5V
♦ ±1.8% Reset Threshold Accuracy at TA = +25°C
♦ ±2.5% Reset Threshold Accuracy Over Temp.
♦ Immune to Short VCC Transients
♦ 5µA Supply Current
♦ Pin-Compatible with MAX811
Ordering and Marking Information appears at end of
data sheet.
________________________Applications
Computers
Controllers
Intelligent Instruments
Typical Operating Circuit
Critical µP and µC Power Monitoring
Portable/Battery-Powered Equipment
VCC
Pin Configuration
VCC
TOP VIEW
GND
1
4
LASERTRIMMED
RESISTORS
VCC
68HC11**
VCC
µP
MAX6314
4.7k
RESET
MR
RESET
2
3
RESET
CIRCUITRY
RESET
MR
MAX6314
GND
SOT143
**OR OTHER µC/µP WITH BIDIRECTIONAL RESET I/O PIN.
* Patents Pending
________________________________________________________________ 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 1-800-835-8769.
MAX6314*
General Description
MAX6314
68HC11/Bidirectional-Compatible
µP Reset Circuit
ABSOLUTE MAXIMUM RATINGS
VCC ........................................................................-0.3V to +6.0V
All Other Pins..............................................-0.3V to (VCC + 0.3V)
Input Current (VCC) .............................................................20mA
Output Current (RESET)......................................................20mA
Rate of Rise (VCC) ...........................................................100V/µs
Continuous Power Dissipation (TA = +70°C)
SOT143 (derate 4mW/°C above +70°C) .......................320mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
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
(VCC = +2.5V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Operating Voltage Range
SYMBOL
VCC
VCC Supply Current
ICC
Reset Threshold (Note 1)
VTH
Reset Threshold Tempco
VCC to Reset Delay
∆VTH/°C
Reset Timeout Period
tRP
CONDITIONS
TA = 0°C to +70°C
VCC = 5.5V, no load
VCC = 3.6V, no load
TA = +25°C
TA = -40°C to +85°C
VCC = falling at 1mV/µs
MAX6314US_ _D1-T
MAX6314US_ _D2-T
MAX6314US_ _D3-T
MAX6314US_ _D4-T
MIN
TYP
MAX
UNITS
V
5
4
VTH
5.5
12
10
VTH + 1.8%
VTH + 2.5%
1.0
VTH - 1.8%
VTH - 2.5%
1
20
140
1120
60
35
1.4
28
200
1570
µA
V
ppm/°C
µs
2
40
280
2240
ms
MANUAL RESET INPUT
MR Input Threshold
VIL
VIH
VIL
VIH
0.8
VTH > 4.0V
2.4
0.3 x VCC
VTH < 4.0V
0.7 x VCC
MR Minimum Input Pulse
1
µs
MR Glitch Rejection
100
MR to Reset Delay
500
MR Pull-Up Resistance
RESET Output Voltage
RESET INTERNAL PULL-UP
Transition Flip-Flop Setup Time (Note 2)
Active Pull-Up Enable Threshold
RESET Active Pull-Up Current
RESET Pull-Up Resistance
RESET Output Rise Time
(Note 3)
32
VOL
63
ns
ns
100
VCC > 4.25V, ISINK = 3.2mA
0.4
VCC > 2.5V, ISINK = 1.2mA
0.3
VCC > 1.2V, ISINK = 0.5mA
0.3
VCC > 1.0V, ISINK = 80µA
0.3
tS
400
VCC = 5V
VCC = 5V
0.4
4.2
VCC = 3V
tR
VCC = 5V
V
0.9
20
4.7
CLOAD = 120pF
CLOAD = 250pF
CLOAD = 200pF
CLOAD = 400pF
5.2
333
666
333
666
kΩ
V
ns
V
mA
kΩ
ns
V
Note 1: The MAX6314 monitors VCC through an internal, factory-trimmed voltage divider that programs the nominal reset threshold.
Factory-trimmed reset thresholds are available in 100mV increments from 2.5V to 5V (see Ordering and Marking Information).
Note 2: This is the minimum time RESET must be held low by an external pull-down source to set the active pull-up flip-flop.
Note 3: Measured from RESET VOL to (0.8 x VCC), RLOAD = ∞.
2
_______________________________________________________________________________________
68HC11/Bidirectional-Compatible
µP Reset Circuit
SUPPLY CURRENT vs. TEMPERATURE
PULL-UP CHARACTERISTICS
MAX6314-01
MAX6314-02
6
+5V
4.7kΩ
74HC05
5
MAX6314 PULL-UP
2V/div
+5V
74HC05
VCC
RESET
100pF
SUPPLY CURRENT (µA)
4.7kΩ PULL-UP
2V/div
100pF
MAX6314
INPUT
5V/div
GND
MR
VCC = 5V
4
3
VCC = 3V
2
VCC = 1V
1
0
-50
200ns/div
-30
-10
10
30
50
70
90
TEMPERATURE (°C)
TA = +25°C
2
TA = -40°C
1
30
VTH = 3.00V
20
10
1
2
3
-50
5
4
1.004
1.002
1.000
0.998
0.996
-10
10
30
50
70
-50
-30
-10
10
30
50
TEMPERATURE (°C)
70
90
0.99
0.98
0.97
-50
-30
-10
10
30
50
TEMPERATURE (°C)
MAXIMUM TRANSIENT DURATION
vs. RESET COMPARATOR OVERDRIVE
RESET PULL-UP TIME
vs. TEMPERATURE
TA = +25°C
RESET OCCURS
ABOVE CURVE
80
60
VTH = 4.63V
40
20
70
90
70
90
600
500
CL = 390pF
400
300
200
CL = 100pF
100
VTH = 3.00V
0
0.994
1.00
90
100
MAXIMUM TRANSIENT DURATION (µs)
MAX6314-06
1.006
1.01
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
NORMALIZED RESET THRESHOLD
vs. TEMPERATURE (VCC FALLING)
-30
RESET PULL-UP-TIME (ns)
0
1.02
0.96
0
0
NORMALIZED RESET THRESHOLD
MAX6314-04
VTH = 4.63V
1.03
MAX6314-08
3
40
1.04
NORMALIZED RESET TIMEOUT PERIOD
TA = +85°C
VCC FALLING AT 1mV/µs
MAX6314-07
SUPPLY CURRENT (µA)
5
50
POWER-DOWN RESET DELAY (µs)
MAX6314-03
6
4
NORMALIZED RESET TIMEOUT PERIOD
vs. TEMPERATURE (VCC RISING)
POWER-DOWN RESET DELAY
vs. TEMPERATURE
MAX6314-05
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
0
10
100
1000
RESET COMP. OVERDRIVE, VTH - VCC (mV)
-50
-30
-10
10
30
50
TEMPERATURE (°C)
_______________________________________________________________________________________
3
MAX6314
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
MAX6314
68HC11/Bidirectional-Compatible
µP Reset Circuit
______________________________________________________________Pin Description
PIN
NAME
FUNCTION
1
GND
2
RESET
Active-Low Complementary Output. In addition to the normal N-channel pull-down, RESET has a P-channel
pull-up transistor in parallel with a 4.7kΩ resistor to facilitate connection to µPs with bidirectional resets. See
the Reset Output section.
3
MR
Manual Reset Input. A logic low on MR asserts reset. Reset remains asserted as long as MR is low, and for
the reset timeout period (tRP) after the reset conditions are terminated. Connect to VCC if not used.
4
VCC
Supply Voltage and Reset Threshold Monitor Input
Ground
VCC
LASERTRIMMED
RESISTORS
MAX6314
VREF
VCC
63k
RESET
GENERATOR
MR
VCC
2µs ONE-SHOT
TRANSITION
FLIP-FLOP
R
Q
4.7k
FF
S
RESET
ACTIVE PULL-UP
ENABLE COMPARATOR
0.5V
GND
Figure 1. Functional Diagram
4
_______________________________________________________________________________________
68HC11/Bidirectional-Compatible
µP Reset Circuit
The MAX6314 has a reset output consisting of a 4.7kΩ
pull-up resistor in parallel with a P-channel transistor
and an N-channel pull down (Figure 1), allowing this IC
to directly interface with microprocessors (µPs) that
have bidirectional reset pins (see the Reset Output
section).
Reset Output
A µP’s reset input starts the µP in a known state. The
MAX6314 asserts reset to prevent code-execution
errors during power-up, power-down, or brownout
conditions. RESET is guaranteed to be a logic low for
VCC > 1V (see the Electrical Characteristics ). Once
V CC exceeds the reset threshold, the internal timer
keeps reset asserted for the reset timeout period (tRP);
after this interval RESET goes high. If a brownout condition occurs (monitored voltage dips below its programmed reset threshold), RESET goes low. Any time
VCC dips below the reset threshold, the internal timer
resets to zero and RESET goes low. The internal timer
starts when VCC returns above the reset threshold, and
RESET remains low for the reset timeout period.
The MAX6314’s RESET output is designed to interface
with µPs that have bidirectional reset pins, such as the
Motorola 68HC11. Like an open-drain output, the
MAX6314 allows the µP or other devices to pull RESET
low and assert a reset condition. However, unlike a
standard open-drain output, it includes the commonly
specified 4.7kΩ pull-up resistor with a P-channel active
pull-up in parallel.
This configuration allows the MAX6314 to solve a problem associated with µPs that have bidirectional reset
pins in systems where several devices connect to
RESET. These µPs can often determine if a reset was
asserted by an external device (i.e., the supervisor IC)
or by the µP itself (due to a watchdog fault, clock error,
or other source), and then jump to a vector appropriate
for the source of the reset. However, if the µP does
assert reset, it does not retain the information, but must
determine the cause after the reset has occurred.
The following procedure describes how this is done
with the Motorola 68HC11. In all cases of reset, the µP
pulls RESET low for about four E-clock cycles. It then
releases RESET, waits for two E-clock cycles, then
checks RESET’s state. If RESET is still low, the µP concludes that the source of the reset was external and,
when RESET eventually reaches the high state, jumps
to the normal reset vector. In this case, stored state
information is erased and processing begins from
scratch. If, on the other hand, RESET is high after the
two E-clock cycle delay, the processor knows that it
caused the reset itself and can jump to a different vector and use stored state information to determine what
caused the reset.
The problem occurs with faster µPs; two E-clock cycles
is only 500ns at 4MHz. When there are several devices
on the reset line, the input capacitance and stray
capacitance can prevent RESET from reaching the
logic-high state (0.8 x VCC) in the allowed time if only a
passive pull-up resistor is used. In this case, all resets
will be interpreted as external. The µP is guaranteed to
sink only 1.6mA, so the rise time cannot be much
reduced by decreasing the recommended 4.7kΩ
pull-up resistance.
The MAX6314 solves this problem by including a pullup transistor in parallel with the recommended 4.7kΩ
resistor (Figure 1). The pull-up resistor holds the output
high until RESET is forced low by the µP reset I/O, or by
the MAX6314 itself. Once RESET goes below 0.5V, a
comparator sets the transition edge flip-flop, indicating
that the next transition for RESET will be low to high. As
soon as RESET is released, the 4.7kΩ resistor pulls
RESET up toward VCC. When RESET rises above 0.5V,
the active P-channel pull-up turns on for the 2µs
duration of the one-shot. The parallel combination of the
4.7kΩ pull-up and the P-channel transistor onresistance quickly charges stray capacitance on the
reset line, allowing RESET to transition low to high within the required two E-clock period, even with several
devices on the reset line (Figure 2). Once the one-shot
times out, the P-channel transistor turns off. This
process occurs regardless of whether the reset was
caused by VCC dipping below the reset threshold, MR
being asserted, or the µP or other device asserting
RESET. Because the MAX6314 includes the standard
4.7kΩ pull-up resistor, no external pull-up resistor is
required. To minimize current consumption, the internal
pull-up resistor is disconnected whenever the MAX6314
asserts RESET.
Manual Reset Input
Many µP-based products require manual reset capability, allowing the operator, a test technician, or external
logic circuitry to initiate a reset. A logic low on MR
asserts reset. Reset remains asserted while MR is low,
and for the reset active timeout period after MR returns
high. To minimize current consumption, the internal
4.7kΩ pull-up resistor on RESET is disconnected
whenever RESET is asserted.
_______________________________________________________________________________________
5
MAX6314
_______________Detailed Description
MAX6314
68HC11/Bidirectional-Compatible
µP Reset Circuit
VCC
VCC
68HC11
4.7k
MR
RESET
RESET
CIRCUITRY
CIN
RESET
RESET
CIRCUITRY
CIN
CSTRAY
MAX6314
RESET
CIN
OTHER DEVICES
Figure 2. MAX6314 Supports Additional Devices on the Reset Bus
MR has an internal 63kΩ pull-up resistor, so it can be
left open if not used. Connect a normally open momentary switch from MR to GND to create a manual reset
function; external debounce circuitry is not required. If
MR is driven from long cables or if the device is used in
a noisy environment, connecting a 0.1µF capacitor from
MR to ground provides additional noise immunity.
__________Applications Information
Negative-Going VCC Transients
In addition to issuing a reset to the µP during power-up,
power-down, and brownout conditions, these devices
are relatively immune to short-duration negative-going
transients (glitches). The Typical Operating Characteristics show the Maximum Transient Duration vs. Reset
Threshold Overdrive, for which reset pulses are not
generated. The graph was produced using negativegoing pulses, starting at VRST max and ending below
the programmed reset threshold by the magnitude
indicated (reset threshold overdrive). The graph shows
the maximum pulse width that a negative-going V CC
transient may typically have without causing a reset
pulse to be issued. As the amplitude of the transient
increases (i.e., goes farther below the reset threshold),
the maximum allowable pulse width decreases. A 0.1µF
bypass capacitor mounted close to VCC provides additional transient immunity.
Ensuring a Valid RESET Output
Down to VCC = 0V
When V CC falls below 1V, RESET no longer sinks
current—it becomes an open circuit. Therefore, highimpedance CMOS-logic inputs connected to RESET
can drift to undetermined voltages. This presents no
problem in most applications, since most µP and other
circuitry is inoperative with VCC below 1V. However, in
applications where RESET must be valid down to
VCC = 0V, adding a pull-down resistor to RESET will
cause any stray leakage currents to flow to ground,
holding RESET low (Figure 3). R1’s value is not critical;
100kΩ is large enough not to load RESET and small
enough to pull RESET to ground.
VCC
MAX6314
RESET
R1
GND
Figure 3. RESET Valid to VCC = Ground Circuit
6
_______________________________________________________________________________________
68HC11/Bidirectional-Compatible
µP Reset Circuit
MAX6314
VCC
tRP
OR
µC RESET DELAY
RESET
0.5V
tS
RESET PULLED LOW
BY µC OR
RESET GENERATOR
0.8 x VCC
tR
ACTIVE
PULL-UP
TURNS ON
Figure 4. RESET Timing Diagram
__________________________________________Ordering and Marking Information
NOMINAL
VTH (V)
PART†
MAX6314US50D1-T
MAX6314US49D1-T
MAX6314US48D1-T
MAX6314US47D1-T
MAX6314US46D1-T
MAX6314US45D1-T
MAX6314US44D1-T†††
MAX6314US43D1-T
MAX6314US42D1-T
MAX6314US41D1-T
MAX6314US40D1-T
MAX6314US39D1-T
MAX6314US38D1-T
MAX6314US37D1-T
MAX6314US36D1-T
MAX6314US35D1-T
MAX6314US34D1-T
MAX6314US33D1-T
MAX6314US32D1-T
MAX6314US31D1-T
MAX6314US30D1-T
MAX6314US29D1-T
5.00
4.90
4.80
4.70
4.63
4.50
4.39
4.30
4.20
4.10
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.08
3.00
2.93
MIN tRP
(ms)
PKG. TOP
MARK††
PART†
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
AA_ _
AB_ _
AC_ _
AD_ _
AE_ _
AF_ _
AG_ _
AH_ _
AI_ _
AJ_ _
AK_ _
AL_ _
CA_ _
CB_ _
CC_ _
CD_ _
CE_ _
CF_ _
CG_ _
CH_ _
CI_ _
CJ_ _
MAX6314US28D1-T
MAX6314US27D1-T
MAX6314US26D1-T†††
MAX6314US25D1-T
MAX6314US50D2-T
MAX6314US49D2-T
MAX6314US48D2-T
MAX6314US47D2-T
MAX6314US46D2-T
MAX6314US45D2-T
MAX6314US44D2-T†††
MAX6314US43D2-T
MAX6314US42D2-T
MAX6314US41D2-T
MAX6314US40D2-T
MAX6314US39D2-T
MAX6314US38D2-T
MAX6314US37D2-T
MAX6314US36D2-T
MAX6314US35D2-T
MAX6314US34D2-T
MAX6314US33D2-T
NOMINAL
VTH (V)
2.80
2.70
2.63
2.50
5.00
4.90
4.80
4.70
4.63
4.50
4.39
4.30
4.20
4.10
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
MIN tRP
(ms)
PKG. TOP
MARK††
1
1
1
1
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
CK_ _
CL_ _
CM_ _
CN_ _
CO_ _
CP_ _
CQ_ _
CR_ _
CS_ _
CT_ _
CU_ _
CV_ _
CW_ _
CX_ _
CY_ _
CZ_ _
DA_ _
DB_ _
DC_ _
DD_ _
DE_ _
DJ_ _
†The MAX6314 is available in a SOT143 package, -40°C to +85°C temperature range.
††The first two letters in the package top mark identify the part, while the remaining two letters are the lot tracking code.
†††Sample stocks generally held on the bolded products; also, the bolded products have 2,500 piece minimum-order quantities.
Non-bolded products have 10,000 piece minimum-order quantities. Contact factory for details.
Note: All devices available in tape-and-reel only. Contact factory for availability.
_______________________________________________________________________________________
7
MAX6314
68HC11/Bidirectional-Compatible
µP Reset Circuit
_____________________________Ordering and Marking Information (continued)
PART†
NOMINAL
VTH (V)
MAX6314US32D2-T
MAX6314US31D2-T
MAX6314US30D2-T
MAX6314US29D2-T
MAX6314US28D2-T
MAX6314US27D2-T
MAX6314US26D2-T†††
MAX6314US25D2-T
MAX6314US50D3-T
MAX6314US49D3-T
MAX6314US48D3-T
MAX6314US47D3-T
MAX6314US46D3-T†††
MAX6314US45D3-T
MAX6314US44D3-T†††
MAX6314US43D3-T
MAX6314US42D3-T
MAX6314US41D3-T
MAX6314US40D3-T
MAX6314US39D3-T
MAX6314US38D3-T
MAX6314US37D3-T
MAX6314US36D3-T
MAX6314US35D3-T
MAX6314US34D3-T
MAX6314US33D3-T
MAX6314US32D3-T
MAX6314US31D3-T†††
MAX6314US30D3-T
MAX6314US29D3-T†††
3.20
3.08
3.00
2.93
2.80
2.70
2.63
2.50
5.00
4.90
4.80
4.70
4.63
4.50
4.39
4.30
4.20
4.10
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.08
3.00
2.93
MIN tRP
(ms)
PKG. TOP
MARK††
PART†
20
20
20
20
20
20
20
20
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
140
DK_ _
DL_ _
DM_ _
DN_ _
DO_ _
DP_ _
DQ_ _
DR_ _
DS_ _
DT_ _
DU_ _
DV_ _
DW_ _
DX_ _
DY_ _
DZ_ _
EA_ _
EB_ _
EC_ _
EG_ _
EH_ _
EI_ _
EJ_ _
EK_ _
EL_ _
EM_ _
EN_ _
EO_ _
EP_ _
ES_ _
MAX6314US28D3-T
MAX6314US27D3-T
MAX6314US26D3-T†††
MAX6314US25D3-T
MAX6314US50D4-T
MAX6314US49D4-T
MAX6314US48D4-T
MAX6314US47D4-T
MAX6314US46D4-T
MAX6314US45D4-T
MAX6314US44D4-T†††
MAX6314US43D4-T
MAX6314US42D4-T
MAX6314US41D4-T
MAX6314US40D4-T
MAX6314US39D4-T
MAX6314US38D4-T
MAX6314US37D4-T
MAX6314US36D4-T
MAX6314US35D4-T
MAX6314US34D4-T
MAX6314US33D4-T
MAX6314US32D4-T
MAX6314US31D4-T
MAX6314US30D4-T
MAX6314US29D4-T
MAX6314US28D4-T
MAX6314US27D4-T
MAX6314US26D4-T†††
MAX6314US25D4-T
NOMINAL
VTH (V)
2.80
2.70
2.63
2.50
5.00
4.90
4.80
4.70
4.63
4.50
4.39
4.30
4.20
4.10
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.08
3.00
2.93
2.80
2.70
2.63
2.50
MIN tRP
(ms)
PKG. TOP
MARK††
140
140
140
140
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
1120
ET_ _
EU_ _
EV_ _
EW_ _
EX_ _
EY_ _
EZ_ _
FA_ _
FB_ _
FC_ _
FD_ _
FE_ _
FF_ _
FG_ _
FH_ _
FI_ _
FJ_ _
FK_ _
FL_ _
FM_ _
FN_ _
FO_ _
FP_ _
FQ_ _
FR_ _
FS_ _
FT_ _
FU_ _
FV_ _
FW_ _
†The MAX6314 is available in a SOT143 package, -40°C to +85°C temperature range.
††The first two letters in the package top mark identify the part, while the remaining two letters are the lot tracking code.
†††Sample stocks generally held on the bolded products; also, the bolded products have 2,500 piece minimum-order quantities.
Non-bolded products have 10,000 piece minimum-order quantities. Contact factory for details.
Note: All devices available in tape-and-reel only. Contact factory for availability.
Chip Information
TRANSISTOR COUNT: 519
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 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 1999 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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