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PDF MAX6931 Data sheet ( Hoja de datos )
| Número de pieza | MAX6931 | |
| Descripción | (MAX6921 / MAX6931) Serial-Interfaced VFD Tube Drivers | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX6931 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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19-3020; Rev 0; 10/03
20-Output, 76V, Serial-Interfaced
VFD Tube Drivers
General Description
The MAX6921/MAX6931 are 20-output, 76V, vacuum-
fluorescent display (VFD) tube drivers that interface a
multiplexed VFD tube to a VFD controller, such as the
MAX6850–MAX6853, or to a microcontroller. The
MAX6921/MAX6931 are also ideal for driving static VFD
tubes or telecom relays.
Data is input using an industry standard 4-wire serial
interface (CLOCK, DATA, LOAD, BLANK), compatibile
with either Maxim’s or industry-standard VFD driver and
controller.
For easy display control, the active-high BLANK input
forces all driver outputs low, turning the display off, and
automatically puts the MAX6921/MAX6931 into shut-
down mode. Display intensity may also be controlled by
directly pulse-width modulating the BLANK input.
The MAX6921 has a serial interface data output, DOUT,
allowing any number of devices to be cascaded on the
same serial interface.
The MAX6931 has a negative supply voltage input, VSS,
allowing the drivers’ output swing to be made bipolar to
simplify filament biasing in many applications.
The MAX6921 is available in 28-pin TSSOP, SO, and
PLCC packages. The MAX6931 is available in a 28-pin
TSSOP package.
Maxim also offers 12-output VFD drivers (MAX6920) and
32-output VFD drivers (MAX6922/MAX6932).
Features
o 5MHz Industry-Standard 4-Wire Serial Interface
o 3V to 5.5V Logic Supply Range
o 8V to 76V Grid/Anode Supply Range
o -11V to 0V Filament Bias Supply (MAX6931 Only)
o Push-Pull CMOS High-Voltage Outputs
o Outputs can Source 40mA, Sink 4mA
Continuously
o Outputs can Source 75mA Repetitive Pulses
o Outputs can be Paralleled for Higher Current Drive
o Any Output can be Used as a Grid or an Anode
Driver
o Blank Input Simplifies PWM Intensity Control
o Small 28-Pin TSSOP Package
o -40°C to +125°C Temperature Range
PART
MAX6921AUI
MAX6921AWI
MAX6921AQI
MAX6931AUI
Ordering Information
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
28 TSSOP
28 Wide SO
28 PLCC
28 TSSOP
www.DataSheet4U.com
White Goods
Gaming Machines
Automotive
Avionics
Instrumentation
Applications
Industrial Weighing
Security
Telecom
VFD Modules
Industrial Control
Pin Configurations appear at end of data sheet.
Typical Operating Circuit
C1
100nF
+5V
7
VCC
+60V
8
VBB
C2
100nF
µC
VFDOUT
VFCLK
VFLOAD
VFBLANK
MAX6931
6 DIN
OUT0–OUT19
22
CLK
23
LOAD
20
BLANK
VSS
-7V 9
GND
21
20
C3
100nF
________________________________________________________________ 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.
1 page  
20-Output, 76V, Serial-Interfaced
VFD Tube Drivers
Typical Operating Characteristics (continued)
(VCC = 5.0V, VBB = 76V, and TA = +25°C, unless otherwise noted.)
LOGIC SUPPLY CURRENT (ICC)
vs. TEMPERATURE (OUTPUTS HIGH)
800
VCC = 5V, CLK = 5MHz
750
700
650
600 VCC = 3.3V, CLK = 5MHz
550 VCC = 5V, CLK = IDLE
500
VCC = 3.3V, CLK = IDLE
450
400
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
OUTPUT VOLTAGE (VBB - VH)
vs. TEMPERATURE (OUTPUT HIGH)
3.5
IOUT = -40mA
3.0
VBB = 8V
2.5
2.0
VBB = 40V
1.5
VBB = 76V
1.0
0.5
0
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
14
12
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8
OUTPUT VOLTAGE
vs. TEMPERATURE (OUTPUT LOW)
IOUT = 4mA
VBB = 76V
VBB = 40V
6 VBB = 8V
4
2
0
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
OUTPUT RISE AND FALL WAVEFORM
MAX6921/31 toc07
BLANK
2V/div
OUT_
20V/div
1µs/div
_______________________________________________________________________________________ 5
5 Page 
20-Output, 76V, Serial-Interfaced
VFD Tube Drivers
Pin Configurations
TOP VIEW
VBB 1
DOUT 2
OUT19 3
OUT18 4
OUT17 5
OUT16 6
OUT15 7
OUT14 8
OUT13 9
OUT12 10
OUT11 11
OUT10 12
BLANK 13
GND 14
MAX6921AWI
28 VCC
27 DIN
26 OUT0
25 OUT1
24 OUT2
23 OUT3
22 OUT4
21 OUT5
20 OUT6
19 OUT7
18 OUT8
17 OUT9
16 LOAD
15 CLK
SO
OUT4 1
OUT3 2
OUT2 3
OUT1 4
OUT0 5
DIN 6
VCC 7
VBB 8
DOUT 9
OUT19 10
OUT18 11
OUT17 12
OUT16 13
OUT15 14
MAX6921AUI
28 OUT5
27 OUT6
26 OUT7
25 OUT8
24 OUT9
23 LOAD
22 CLK
21 GND
20 BLANK
19 OUT10
18 OUT11
17 OUT12
16 OUT13
15 OUT14
TSSOP
OUT4 1
OUT3 2
OUT2 3
OUT1 4
OUT0 5
DIN 6
VCC 7
VBB 8
VSS 9
OUT19 10
OUT18 11
OUT17 12
OUT16 13
OUT15 14
MAX6931AUI
28 OUT5
27 OUT6
26 OUT7
25 OUT8
24 OUT9
23 LOAD
22 CLK
21 GND
20 BLANK
19 OUT10
18 OUT11
17 OUT12
16 OUT13
15 OUT14
TSSOP
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4 3 2 1 28 27 26
OUT17 5
OUT16 6
OUT15 7
OUT14 8
OUT13 9
OUT12 10
OUT11 11
MAX6921AQI
25 OUT1
24 OUT2
23 OUT3
22 OUT4
21 OUT5
20 OUT6
19 OUT7
12 13 14 15 16 17 18
PLCC
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAX6931.PDF ] | |
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