MAX6934AQH+TD Maxim Integrated Products, MAX6934AQH+TD Datasheet

IC DRVR VFD TUBE SRL 44PLCC

MAX6934AQH+TD

Manufacturer Part Number
MAX6934AQH+TD
Description
IC DRVR VFD TUBE SRL 44PLCC
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX6934AQHD.pdf (16 pages)

Specifications of MAX6934AQH+TD

Display Type
Vacuum Fluorescent (VF)
Interface
4-Wire Serial
Current - Supply
2mA
Voltage - Supply
8 V ~ 76 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
44-LCC, 44-PLCC
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Configuration
-
Digits Or Characters
-
Lead Free Status / Rohs Status
 Details
The MAX6922/MAX6932/MAX6933/MAX6934 multi-out-
put, 76V, vacuum-fluorescent display (VFD) tube drivers
that interface a VFD tube to a microcontroller or a VFD
controller, such as the MAX6850–MAX6853. The
MAX6922/MAX6934 have 32 outputs, while the MAX6932
has 27 outputs, and the MAX6933 has 28 outputs. All
devices are also suitable for driving telecom relays.
Data is input using standard 4-wire serial interface
(CLOCK, DATA, LOAD, BLANK) compatible with other
VFD drivers and controllers.
For easy display control, the active-high BLANK input
forces all driver outputs low, turning the display off, and
automatically puts the IC into shutdown mode. Display
intensity may also be controlled by directly pulse-width
modulating the BLANK input.
The MAX6922/MAX6932/MAX6934 have a serial inter-
face data output, DOUT, allowing any number of
devices to be cascaded on the same serial interface.
The MAX6932/MAX6933/MAX6934 have a negative
supply voltage input, V
swing to be made bipolar to simplify filament biasing in
many applications.
The MAX6922 is available in a 44-pin PLCC package,
the MAX6932 and MAX6933 are available in 36-pin
SSOP packages, and the MAX6934 is available in 44-pin
PLCC and TQFN packages.
Maxim also offers a 12-output VFD driver (MAX6920)
and 20-output VFD drivers (MAX6921/MAX6931).
19-3224; Rev 2; 3/07
Pin Configurations appear at end of data sheet.
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.
MAX6922
MAX6932
MAX6933
MAX6934
PART
White Goods
Gaming Machines
Automotive
Avionics
Instrumentation
OUTPUTS
NO. OF
________________________________________________________________ Maxim Integrated Products
32
27
28
32
General Description
SS
, allowing the drivers’ output
Industrial Weighing
Security
Telecom
VFD Modules
Industrial Control
BIPOLAR
OUTPUT
Selector Guide
SWING
Serial-Interfaced VFD Tube Drivers
Yes
Yes
Yes
No
Applications
CASCADING
DOUT FOR
Yes
Yes
Yes
No
27-, 28-, and 32-Output, 76V,
♦ 5MHz Industry-Standard 4-Wire Serial Interface
♦ 3V to 5.5V Logic Supply Range
♦ 8V to 76V Grid/Anode Supply Range
♦ -11V to 0V Filament Bias Supply
♦ Push-Pull CMOS High-Voltage Outputs
♦ Outputs Can Source 40mA, Sink 4mA
♦ Outputs Can Source 75mA Repetitive Pulses
♦ Outputs Can Be Paralleled for Higher Current Drive
♦ Any Output Can Be Used as a Grid or an Anode
♦ BLANK Input Simplifies PWM Intensity Control
♦ -40°C to +125°C Temperature Range as Standard
*EP = Exposed paddle.
MAX6922AQH
MAX6932AAX
MAX6933AAX
MAX6934AQH
MAX6934ATH
(MAX6932/MAX6933/MAX6934 Only)
Continuously
Driver
PART
µC
VFBLANK
VFDOUT
VFLOAD
VFCLK
Typical Operating Circuit
-40°C to +125°C 44 PLCC
-40°C to +125°C 36 SSOP
-40°C to +125°C 36 SSOP
-40°C to +125°C 44 PLCC
-40°C to +125°C 44 TQFN-EP*
TEMP RANGE
100nF
100nF
C3
C1
Ordering Information
37
17
18
15
-7V
+5V
38
DIN
CLK
LOAD
BLANK
V
V
CC
SS
12
THIN QFN
MAX6934
OUT0–OUT31
PIN-
PACKAGE
39
GND
V
BB
+60V
16
Features
32
C2
100nF
T4477-3
CODE
Q44-1
Q44-1
A36-2
A36-2
PKG
1

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MAX6934AQH+TD Summary of contents

Page 1

... Yes MAX6934 32 Yes Pin Configurations appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. 27-, 28-, and 32-Output, 76V, ♦ 5MHz Industry-Standard 4-Wire Serial Interface ♦ 5.5V Logic Supply Range ♦ ...

Page 2

Serial-Interfaced VFD Tube Drivers ABSOLUTE MAXIMUM RATINGS (Voltage with respect to GND.) V .........................................................................-0.3V to +80V BB V ...........................................................................-0. (MAX6932/MAX6933/MAX6934 only)..............-12V to +0. (MAX6932/MAX6933/MAX6934 only) ....-0.3V to ...

Page 3

Serial-Interfaced VFD Tube Drivers ELECTRICAL CHARACTERISTICS (continued) (Typical Operating Circuit 76V wise noted.) (Note 1) PARAMETER SYMBOL Low-Voltage OUT_ ( M AX 6932 Low-Voltage OUT_ ( M AX 6932/M AX 6933/M ...

Page 4

Serial-Interfaced VFD Tube Drivers ELECTRICAL CHARACTERISTICS (continued) (Typical Operating Circuit 76V wise noted.) (Note 1) PARAMETER SYMBOL Rise and Fall Time DOUT CLK Clock Period CLK Pulse-Width High t ...

Page 5

Serial-Interfaced VFD Tube Drivers (V = 5.0V 76V, and T = +25°C, unless otherwise noted LOGIC SUPPLY CURRENT ( vs. TEMPERATURE (OUTPUTS HIGH) 1.2 1 5V, CLK = 5MHz CC 1.0 ...

Page 6

Serial-Interfaced VFD Tube Drivers PIN MAX6922/ MAX6932/ MAX6934 MAX6934 MAX6933 TQFN PLCC SSOP 7– 1–11, 13, 17, 19, 20, 14, 19, 20, — 25, 26, ...

Page 7

Serial-Interfaced VFD Tube Drivers CLK DIN LOAD BLANK WHERE FOR MAX6932 28 FOR MAX6933 32 FOR MAX6922/MAX6934 Figure 1. MAX6922/MAX6932/MAX6933/MAX6934 Functional Diagram V BB 40Ω TYPICAL SLEW-RATE CONTROL 750Ω TYPICAL Figure 2. MAX6922 CMOS Output Driver Structure ...

Page 8

Serial-Interfaced VFD Tube Drivers Each driver output is a slew-rate controlled CMOS push-pull switch driving between V (MAX6922 and V (MAX6932/MAX6933 MAX6934). The output rise time is always slower than the ...

Page 9

Serial-Interfaced VFD Tube Drivers Table 1. 4-Wire Serial Interface Truth Table CLOCK SERIAL SHIFT REGISTER CONTENTS INPUT DATA INPUT CLK … Dn-2 Dn-1 DIN … Rn-2 Rn … Rn-2 ...

Page 10

Serial-Interfaced VFD Tube Drivers characteristics required. Resistor R discharges tube capacitance C to 10% of the initial voltage in 2 seconds. So, for example, a 15kΩ value for R dis- charges 100pF tube ...

Page 11

Serial-Interfaced VFD Tube Drivers MAX685x VFDOUT VFCLK VFLOAD VFBLANK ______________________________________________________________________________________ Typical Application Circuit MAX6922 DIN CLK LOAD BLANK DOUT MAX6922 DIN CLK LOAD BLANK DOUT MAX6922 DIN CLK LOAD BLANK DOUT Chip Information TRANSISTOR COUNT: ...

Page 12

Serial-Interfaced VFD Tube Drivers TOP VIEW OUT28 7 OUT27 8 OUT26 9 OUT25 10 OUT24 11 MAX6922 OUT23 12 OUT22 13 OUT21 14 OUT20 15 OUT19 16 ...

Page 13

Serial-Interfaced VFD Tube Drivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages ...

Page 14

Serial-Interfaced VFD Tube Drivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages TOP VIEW FRONT ...

Page 15

Serial-Interfaced VFD Tube Drivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) E E/2 D ______________________________________________________________________________________ 27-, 28-, and 32-Output, 76V, Package Information ...

Page 16

... 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products Package Information (continued) PACKAGE OUTLINE 32, 44, 48, 56L THIN QFN, 7x7x0 ...

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