MAX6920AWP+ [MAXIM]
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| 型号： | MAX6920AWP+ |
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MAXIM INTEGRATED PRODUCTS |
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19-3061; Rev 0; 10/03
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
General Description
Features
ꢀ 5MHz Industry-Standard 4-Wire Serial Interface
ꢀ 3V to 5.5V Logic Supply Range
The MAX6920 is a 12-output, 76V, vacuum fluorescent
display (VFD) tube driver that interfaces a multiplexed
VFD tube to a VFD controller such as the
MAX6850–MAX6853 or to a microcontroller. The
MAX6920 is also ideal for driving either static VFD tubes
or telecom relays.
ꢀ 8V to 76V Grid/Anode Supply Range
ꢀ Push-Pull CMOS High-Voltage Outputs
ꢀ Outputs can Source 40mA, Sink 4mA
Data is inputted using an industry-standard 4-wire serial
interface (CLOCK, DATA, LOAD, BLANK) for compatibili-
ty with both industry-standard drivers and Maxim’s VFD
controllers.
Continuously
ꢀ Outputs can Source 75mA Repetitive Pulses
ꢀ Outputs can be Paralleled for Higher Current
For easy display control, the active-high BLANK input
forces all driver outputs low, turning the display off, and
automatically puts the MAX6920 into shutdown mode.
Display intensity may also be controlled by pulse-width
modulating the BLANK input.
Drive
ꢀ Any Output can be Used as a Grid or an Anode
Driver
ꢀ Blank Input Simplifies PWM Intensity Control
ꢀ Small 20-Pin SO Package
The MAX6920 has a serial interface data output pin,
DOUT, allowing any number of devices to be cascaded
on the same serial interface.
ꢀ -40°C to +125°C Temperature Range
The MAX6920 is available in a 20-pin SO package.
Maxim also offers VFD drivers with either 20
(MAX6921/MAX6931) or 32 outputs (MAX6922 and
MAX6932).
Ordering Information
Applications
White Goods
Gaming Machines
Automotive
Industrial Weighing
PART
TEMP RANGE
PIN-PACKAGE
Security
MAX6920AWP
-40°C to +125°C
20 Wide SO
Telecom
Avionics
Pin Configuration
Typical Operating Circuit
TOP VIEW
+5V
+60V
V
1
2
3
4
5
6
7
8
9
20 V
CC
BB
C1
C2
100nF
100nF
DOUT
OUT11
OUT10
OUT9
19 DIN
18 OUT0
17 OUT1
16 OUT2
15 OUT3
14 OUT4
13 OUT5
12 LOAD
11 CLK
20
V
1
V
CC
BB
µC
MAX6920
OUT0 – OUT11
12
19
MAX6920AWP
VFDOUT
OUT8
DIN
11
12
9
VFCLK
CLK
OUT7
VFLOAD
LOAD
BLANK
OUT6
VFBLANK
BLANK
GND
10
GND 10
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
ABSOLUTE MAXIMUM RATINGS
Voltage (with respect to GND)
OUT_ Sink Current
CLK, DIN, LOAD, BLANK, DOUT Current ....................... 10mA
Continuous Power Dissipation
15mA
..............................................................
V
V
-0.3V to +80V
BB.................................................................................
.......................................................................-0.3V to +6V
CC
OUT_.......................................................-0.3V to (V + 0.3V)
BB
A
All Other Pins..........................................-0.3V to (V
+ 0.3V)
CC
OUT_ Continuous Source Current ....................................-45mA
OUT_ Pulsed (1ms max, 1/4 max duty) Source Current ...-80mA
Total OUT_ Continuous Source Current .........................-540mA
Total OUT_ Continuous Sink Current .................................60mA
Total OUT_ Pulsed (1ms max, 1/4 max duty)
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Source Current
-960mA
............................................................
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
(Typical Operating Circuit, V = 8V to 76V, V
= 3V to 5.5V, T = T
to T
, unless otherwise noted.) (Note 1)
MAX
BB
CC
A
MIN
PARAMETER
Logic Supply Voltage
Tube Supply Voltage
SYMBOL
CONDITIONS
MIN
3
TYP
MAX
5.5
76
UNITS
V
V
V
CC
V
8
BB
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
= +25°C
72
350
1
170
200
650
700
2
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
All outputs OUT_
low, CLK = idle
= -40°C to +125°C
= +25°C
Logic Supply Operating Current
Tube Supply Operating Current
I
µA
CC
All outputs OUT_
high, CLK = idle
= -40°C to +125°C
= +25°C
All outputs OUT_
low
= -40°C to +125°C
= +25°C
4.2
0.85
0.9
I
mA
BB
0.53
All outputs OUT_
high
= -40°C to +125°C
= +25°C
V
- 1.1
BB
V
≥ 15V,
BB
= -40°C to +85°C
= -40°C to +125°C
= -40°C to +85°C
= -40°C to +125°C
= +25°C
V
- 2
BB
I
= -25mA
OUT
V
V
V
- 2.5
BB
BB
BB
- 3.5
- 4.0
V
≥ 15V,
BB
High-Voltage OUT_
V
V
H
I
= -40mA
OUT
V
- 1.2
BB
8V < V < 15V,
BB
= -40°C to +85°C
= -40°C to +125°C
= +25°C
V
V
- 2.5
- 3.0
BB
BB
I
= -25mA
OUT
0.75
1
V
≥ 15V,
BB
= -40°C to +85°C
= -40°C to +125°C
= +25°C
1.5
1.9
1.1
1.6
2.0
I
= 1mA
OUT
Low-Voltage OUT_
V
V
L
0.8
8V < V < 15V,
BB
= -40°C to +85°C
= -40°C to +125°C
I
= 1mA
OUT
2
_______________________________________________________________________________________
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
ELECTRICAL CHARACTERISTICS (continued)
(Typical Operating Circuit, V = 8V to 76V, V
= 3V to 5.5V, T = T
to T
, unless otherwise noted.) (Note 1)
MAX
BB
CC
A
MIN
PARAMETER
SYMBOL
CONDITIONS
= 60V, C = 50pF, R = 2.3kΩ
MIN
TYP
0.9
MAX
2
UNITS
µs
Rise Time OUT_ (20% to 80%)
Fall Time OUT_ (80% to 20%)
t
R
V
V
BB
BB
L
L
t
= 60V, C = 50pF, R = 2.3kΩ
0.6
1.5
µs
F
L
L
SERIAL INTERFACE TIMING CHARACTERISTICS
LOAD Rising to OUT_ Falling
Delay
(Notes 2, 3)
0.9
1.2
1.8
2.4
1.8
2.5
10
µs
µs
µs
µs
µA
V
LOAD Rising to OUT_ Rising
Delay
(Notes 2, 3)
(Notes 2, 3)
(Notes 2, 3)
BLANK Rising to OUT_ Falling
Delay
0.9
BLANK Falling to OUT_ Rising
Delay
1.3
Input Leakage Current
CLK, DIN, LOAD, BLANK
I
, I
0.05
IH IL
Logic-High Input Voltage
CLK, DIN, LOAD, BLANK
0.8 x
V
IH
V
CC
Logic-Low Input Voltage
CLK, DIN, LOAD, BLANK
0.3 x
V
V
IL
V
CC
Hysteresis Voltage
DIN, CLK, LOAD, BLANK
∆V
0.6
V
I
V
0.5
-
CC
High-Voltage DOUT
Low-Voltage DOUT
V
I
I
= -1.0mA
= 10pF
V
V
OH
SOURCE
V
= 1.0mA
0.5
100
80
OL
SINK
3V to 4.5V
60
30
C
DOUT
Rise and Fall Time DOUT
ns
(Note 2)
4.5V to 5.5V
CLK Clock Period
t
200
90
90
100
5
ns
ns
ns
ns
ns
CP
CLK Pulse-Width High
CLK Pulse-Width Low
CLK Rise to LOAD Rise Hold
t
CH
t
CL
t
(Note 2)
CSH
DIN Setup Time
t
DS
3V to 4.5V
20
15
25
20
55
DIN Hold Time
t
ns
DH
4.5V to 5.5V
3.0V to 4.5V
4.5V to 5.5V
120
75
240
150
DOUT Propagation Delay
LOAD Pulse High
t
C
= 10pF
DOUT
ns
ns
DO
t
CSW
Note 1: All parameters are tested at T = +25°C. Specifications over temperature are guaranteed by design.
A
Note 2: Guaranteed by design.
Note 3: Delay measured from control edge to when output OUT_ changes by 1V.
_______________________________________________________________________________________
3
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
Typical Operating Characteristics
(V
= 5.0V, V = 76V, and T = +25°C, unless otherwise noted.)
BB A
CC
TUBE SUPPLY CURRENT (I
vs. TEMPERATURE (OUTPUTS LOW)
)
TUBE SUPPLY CURRENT (I
vs. TEMPERATURE (OUTPUTS HIGH)
)
LOGIC SUPPLY CURRENT (I )
CC
vs. TEMPERATURE (OUTPUTS LOW)
BB
BB
2.0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
400
350
300
250
200
150
100
50
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
= 5V, CLK = 5MHz
CC
CC
V
= 3.3V, CLK = 5MHz
V
= 76V
BB
V
= 76V
BB
V
= 40V
V
= 8V
BB
BB
V
= 5V, CLK = IDLE
CC
V
= 3.3V, CLK = IDLE
CC
V
= 40V
BB
V
= 8V
BB
0
-40 -15
10
35
60
85
110
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
TEMPERATURE (°C)
SUPPLY CURRENT (I
vs. TEMPERATURE (OUTPUTS HIGH)
)
OUTPUT VOLTAGE (V - V )
BB H
vs. TEMPERATURE (OUTPUT HIGH)
CC
600
550
500
450
400
350
300
250
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
= 5V, CLK = 5MHz
CC
I
= -40mA
OUT
V
= 8V
BB
V
= 3.3V, CLK = 5MHz
CC
V
= 40V
BB
V
= 5V, CLK = IDLE
V
= 76V
BB
CC
V
= 3.3V, CLK = IDLE
CC
-40
10
60
110
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
TEMPERATURE (°C)
OUTPUT VOLTAGE
vs. TEMPERATURE (OUTPUT LOW)
OUTPUT RISE AND FALL WAVEFORM
MAX6920 toc11
14
12
10
8
I
= 4mA
OUT
V
= 76V
BB
BLANK
2V/div
V
= 40V
BB
6
OUT_
20V/div
V
= 8V
BB
4
2
0
-40 -20
0
20 40 60 80 100 120
1µs/div
TEMPERATURE (°C)
4
_______________________________________________________________________________________
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
Pin Description
PIN
1
NAME
FUNCTION
V
VFD Tube Supply Voltage
Serial-Clock Output. Data is clocked out of the internal shift register to DOUT on CLK’s rising edge.
BB
2
DOUT
OUT0 to
OUT11
3–8, 13–18
VFD Anode and Grid Drivers. OUT0 to OUT11 are push-pull outputs swinging from V to GND.
BB
Blanking Input. High forces outputs OUT0 to OUT11 low, without altering the contents of the output
latches. Low enables outputs OUT0 to OUT11 to follow the state of the output latches.
9
BLANK
10
11
GND
CLK
Ground
Serial-Clock Input. Data is loaded into the internal shift register on CLK’s rising edge.
Load Input. Data is loaded transparently from the internal shift register to the output latch while LOAD
is high. Data is latched into the output latch on LOAD's rising edge, and retained while LOAD is low.
12
LOAD
DIN
19
20
Serial-Data Input. Data is loaded into the internal shift register on CLK’s rising edge.
V
Logic Supply Voltage
CC
CLK
DIN
SERIAL-TO-PARALLEL SHIFT REGISTER
LATCHES
DOUT
LOAD
BLANK
MAX6920
OUT0 OUT1 OUT2
OUT11
Figure 1. MAX6920 Functional Diagram
_______________________________________________________________________________________
5
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
the shift register outputs when LOAD is high, and latch-
es the current state on the falling edge of LOAD.
V
BB
Each driver output is a slew-rated controlled CMOS
push-pull switch driving between V
and GND. The
BB
40Ω
output rise time is always slower than the output fall
time to avoid shoot-through currents during output tran-
sitions. The output slew rates are slow enough to mini-
mize EMI, yet are fast enough so as not to impact the
typical 100µs digit multiplex period and affect the dis-
play intensity.
TYPICAL
SLEW- RATE
CONTROL
OUT_
750Ω
TYPICAL
Initial Power-Up and Operation
An internal reset circuit clears the internal registers of
the MAX6920 on power-up. All outputs OUT0 to OUT11
and the interface output DOUT initialize low regardless
of the initial logic levels of the CLK, DIN, BLANK, and
LOAD inputs.
Figure 2. MAX6920 CMOS Output Driver Structure
Detailed Description
The MAX6920 is a VFD tube driver comprising a 4-wire
serial interface driving 12 high-voltage Rail-to-Rail®
output ports. The driver is suitable for both static and
multiplexed displays.
4-Wire Serial Interface
The MAX6920 uses a 4-wire serial interface with three
inputs (DIN, CLK, LOAD) and a data output (DOUT).
This interface is used to write output data to the
MAX6920 (Figure 3) (Table 1). The serial interface data
word length is 12 bits, D0–D11.
The output ports feature high current-sourcing capabili-
ty to drive current into grids and anodes of static or
multiplex VFDs. The ports also have active current sink-
ing for fast discharge of capacitive display electrodes
in multiplexing applications.
The functions of the four serial interface pins are:
•
CLK input is the interface clock, which shifts data
into the MAX6920’s 12-bit shift register on its rising
edge.
The 4-wire serial interface comprises a 12-bit shift reg-
ister and a 12-bit transparent latch. The shift register is
written through a clock input CLK and a data input DIN
and the data propagates to a data output DOUT. The
data output allows multiple drivers to be cascaded and
operated together. The output latch is transparent to
•
LOAD input passes data from the MAX6920’s 12-
bit shift register to the 12-bit output latch when
LOAD is high (transparent latch), and latches the
data on LOAD’s falling edge.
t
CSW
LOAD
t
CSH
t
t
CH
CL
t
CP
CLK
DIN
t
DH
t
DS
D11
D10
D1
D0
t
DO
DOUT
D11
Figure 3. 4-Wire Serial Interface Timing Diagram
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
6
_______________________________________________________________________________________
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
Table 1. 4-Wire Serial Interface Truth Table
CLOCK
INPUT
LOAD
INPUT
BLANKING
INPUT
SERIAL
DATA
INPUT
DIN
SHIFT REGISTER CONTENTS
LATCH CONTENTS
OUTPUT CONTENTS
CLK D0 D1 D2 … Dn-1 Dn
LOAD D0 D1 D2
…
Dn-1 Dn
BLANK
D0 D1 D2
…
Dn-1 Dn
H
L
H
L
R0 R1 … Rn-2 Rn-1
R0 R1 … Rn-2 Rn-1
X
R0 R1 R2 … Rn-1 Rn
X
X
X
…
X
X
L
R0 R1 R2
P0 P1 P2
…
…
…
Rn-1 Rn
Pn-1 Pn
P0 P1 P2 … Pn-1
Pn
H
L
P0 P1 P2
…
…
Pn-1 Pn
X
X
X
X
X
H
L
L
L
L
L
L = Low logic level.
H = High logic level.
X = Don’t care.
P = Present state (shift register).
R = Previous state (latched).
•
•
DIN is the interface data input, and must be stable
when it is sampled on the rising edge of CLK.
LOAD may be high or low during a transmission. If
LOAD is high, then the data shifted into the shift regis-
ter at DIN appears at the OUT0 to OUT11 outputs.
DOUT is the interface data output, which shifts
data out from the MAX6920’s 12-bit shift register
on the falling edge of CLK. Data at DIN is propa-
gated through the shift register and appears at
CLK and DIN may be used to transmit data to other
peripherals. Activity on CLK always shifts data into the
MAX6920’s shift register. However, the MAX6920 only
updates its output latch on the rising edge of LOAD,
and the last 12 bits of data are loaded. Therefore, multi-
ple devices can share CLK and DIN as long as they
have unique LOAD controls.
DOUT (20 CLK cycles + t ) later.
DO
A fifth input pin, BLANK, can be taken high to force out-
puts OUT0 to OUT11 low, without altering the contents
of the output latches. When the BLANK input is low,
outputs OUT0 to OUT11 follow the state of the output
latches. A common use of the BLANK input is PWM
intensity control.
Determining Driver Output Voltage Drop
The outputs are CMOS drivers, and have a resistive
characteristic. The typical and maximum sink and
source output resistances can be calculated from the
The BLANK input’s function is independent of the oper-
ation of the serial interface. Data can be shifted into the
serial interface shift register and latched regardless of
the state of BLANK.
V
and V electrical characteristics. Use this calculated
L
H
resistance to determine the output voltage drop at dif-
ferent output currents.
Writing Device Registers Using the 4-Wire
Serial Interface
Output Current Ratings
The continuous current source capability is 40mA per
output. Outputs may drive up to 75mA as a repetitive
peak current, subject to the on time (output high) being
no longer than 1ms, and the duty cycle being such that
the output power dissipation is no more than the dissipa-
tion for the continuous case. The repetitive peak rating
allows outputs to drive a higher current in multiplex grid
driver applications, where only one grid is on at a time,
and the multiplex time per grid is no more than 1ms.
The MAX6920 is written using the following sequence:
1) Take CLK low.
2) Clock 12 bits of data in order D11 first to D0 last
into DIN, observing the data setup and hold times.
3) Load the 12 output latches with a falling edge
on LOAD.
_______________________________________________________________________________________
7
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
Since dissipation is proportional to current squared, the
maximum current that can be delivered for a given mul-
tiplex ratio is given by:
higher for multiplexed tubes. When using multiple dri-
ver devices, try to share the average dissipation evenly
between the drivers.
I
= (grids x 1600)1/2mA
Determine the power dissipation (P ) for the MAX6920
D
PEAK
for static tube drivers with the following equation:
where grids is the number of grids in a multiplexed display.
P
D
= (V x I ) + (V x I ) + ((V - V ) x
CC CC BB BB BB H
This means that a duplex application (two grids) can use
a repetitive peak current of 56.5mA, a triplex application
(three grids) can use a repetitive peak current of 69.2mA,
and higher multiplex ratios are limited to 75mA.
I
x A))
ANODE
where:
A = number of anodes driven (a MAX6920 can drive a
maximum of 12).
Paralleling Outputs
Any number of outputs within the same package may
be paralleled in order to raise the current drive or
reduce the output resistance. Only parallel outputs
directly (by shorting outputs together) if the interface
control can be guaranteed to set the outputs to the
same level. Although the sink output is relatively weak
(typically 750Ω), that resistance is low enough to dissi-
pate 530mW when shorted to an opposite level output
I
= maximum anode current.
ANODE
(V - V ) is the output voltage drop at the given maxi-
BB
H
mum anode current I
.
OUT
A static tube dissipation example follows:
= 5V 5%, V = 10V to 18V, A = 12, I = 2mA
OUT
V
CC
BB
P
D
= (5.25V x 0.7mA) + (18V x 0.9mA) + ((2.5V x
2mA/25mA) x 2mA x 12) = 24.7mW
at a V voltage of only 20V. A safe way to parallel out-
BB
Determine the power dissipation (P ) for the MAX6920
D
for multiplex tube drivers with the following equation:
puts is to use diodes to prevent the outputs from sink-
ing current (Figure 4). Because the outputs cannot sink
current from the VFD tube, an external discharge resis-
tor, R, is required. For static tubes, R can be a large
value such as 100kΩ. For multiplexed tubes, the value
of the resistor can be determined by the load capaci-
tance and timing characteristics required. Resistor Rl
discharges tube capacitance C to 10% of the initial
voltage in 2.3 x RC seconds. So, for example, a 15kΩ
value for R discharges 100pF tube grid or anode from
40V to 4V in 3.5µs, but draws an additional 2.7mA from
the driver when either output is high.
P
D
= (V x I ) + (V x I ) + ((V - V ) x I
CC CC BB BB BB H ANODE
x A) + ((V - V ) x I
))
GRID
BB
H
where:
A = number of anodes driven
G = number of grids driven
I
= maximum anode current
ANODE
I
= maximum grid current
GRID
The calculation presumes all anodes are on but only
one grid is on. The calculated P is the worst case,
D
Power Dissipation
Take care to ensure that the maximum package dissi-
pation ratings for the chosen package are not exceed-
ed. Over dissipation is unlikely to be an issue when
driving static tubes, but the peak currents are usually
presuming one digit is always being driven with all its
anodes lit. Actual P can be estimated by multiplying
D
this P figure by the actual tube drive duty cycle, taking
D
into account interdigit blanking and any PWM intensity
control.
A multiplexed tube dissipation example follows:
V
= 5V 5%, V
= 36V to 42V, A = 6, G = 6,
= 24mA
CC
BB
I
= 0.4mA, I
ANODE
GRID
MAX6920
P
D
= (5.25V X 0.7mA)+ (42V x 0.9mA) + ((2.5V x
0.4mA/25mA) x 0.4mA x 6) +
D1
OUT0
OUTPUT
((2.5V x 24mA/25mA) x 24mA) = 99mW
D2
OUT1
Thus, for a 20-pin wide SO package (T = 1 / 0.01 =
JA
+100°C/W from Absolute Maximum Ratings), the maxi-
R
mum allowed ambient temperature T is given by:
A
T
= T + (P x T ) = +150°C = T + (0.099 x
A D JA A
J(MAX)
+100°C/W)
So T = +140°C.
A
Figure 4. Paralleling Outputs
8
_______________________________________________________________________________________
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
This means that the driver can be operated in this
Typical Application Circuit
application up to the MAX6920’s +125°C maximum
operating temperature.
Power-Supply Considerations
MAX685x
MAX6920
The MAX6920 operates with multiple power-supply volt-
VFDOUT
DIN
ages. Bypass the V
and V
power-supply pins to
BB
CC
GND with a 0.1µF capacitor close to the device. For
multiplex applications, it may be necessary to add an
additional 1µF bulk electrolytic capacitor, or greater, to
VFCLK
CLK
VFLOAD
LOAD
BLANK
VFBLANK
DOUT
DOUT
DOUT
the V supply.
BB
Power-Supply Sequencing
The order of the power-supply sequencing is not impor-
tant. The MAX6920 will not be damaged if either V or
CC
V
is grounded (or maintained at any other voltage
MAX6920
BB
below the data sheet minimum), while the other supply
is maintained up to its maximum rating. However, as
with any CMOS device, do not drive the MAX6920’s
DIN
CLK
logic inputs if the logic supply V
is not operational
LOAD
BLANK
CC
because the input protection diodes clamp the signals.
Chip Information
TRANSISTOR COUNT: 2743
PROCESS: BiCMOS
MAX6920
DIN
CLK
LOAD
BLANK
_______________________________________________________________________________________
9
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
INCHES
MILLIMETERS
N
MAX
MAX
2.65
0.30
0.49
0.32
DIM
A
MIN
MIN
2.35
0.10
0.35
0.23
0.093
0.004
0.014
0.009
0.104
0.012
0.019
0.013
A1
B
C
e
0.050
1.27
H
E
E
0.291
0.394
0.016
0.299
0.419
0.050
7.40
10.00
0.40
7.60
10.65
1.27
H
L
VARIATIONS:
INCHES
1
MILLIMETERS
TOP VIEW
MAX
0.413
0.463
0.512
0.614
0.713
MAX
DIM
D
MIN
MIN
10.10
11.35
12.60
15.20
17.70
N MS013
0.398
0.447
0.496
0.598
0.697
10.50 16 AA
11.75 18 AB
13.00 20 AC
15.60 24 AD
18.10 28 AE
D
D
D
D
D
C
A
B
e
0 -8
A1
L
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, .300" SOIC
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0042
B
1
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.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2003 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
相关型号：
MAX6920AWP+T
Vacuum Fluorescent Driver, 12-Segment, BICMOS, PDSO20, 0.300 INCH, MS-013AC, SO-20
MAXIM
MAX6921AUI-T
Vacuum Fluorescent Driver, 20-Segment, BICMOS, PDSO28, 4.40 MM, MO-153AE, TSSOP-28
MAXIM
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