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MAX6922, MAX6932, MAX6933, MAX6934
27-, 28-, and 32-Output, 76V, Serial-Interfaced VFD Tube Drivers
76V, 27-, 28-, and 32-Output, Serial-Interfaced VFD Drivers Continuously Source 40mA with Slew-Rate limiting to Reduce EMI
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Status
Active: In Production.
Description
The MAX6922/MAX6932/MAX6933/MAX6934 multi-output,
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 interface
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, VSS, allowing the drivers' output
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).
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Data Sheet
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Key Features
- 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 (MAX6932/MAX6933/MAX6934 Only)
- Push-Pull CMOS High-Voltage Outputs
- Outputs Can Source 40mA, Sink 4mA Continuously
- 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 Driver
- BLANK Input Simplifies PWM Intensity Control
- -40°C to +125°C Temperature Range as Standard
- Underwriters Laboratories (UL) Recognized
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Applications/Uses
- Automotive
- Avionics
- Gaming Machines
- Industrial Control
- Industrial Weighing
- Instrumentation
- Security
- Telecom
- VFD Modules
- White Goods
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Key Specifications:
| VFD Display Drivers |
| Part Number |
Controller/ Drvr. |
Display Type |
Interface |
VSUPPLY
(V) |
Budgetary Price |
| See Notes |
| MAX6934 |
- |
- |
- |
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$4.87 @1k |
| MAX6922 |
Driver |
VFD Tube - 32 Ports |
Serial 4-Wire |
$4.18 @1k |
| MAX6932 |
Driver |
VFD Tube - 27 Port |
Serial 4-Wire |
- |
| MAX6933 |
Driver |
VFD Tube - 28 Port |
Serial 4-Wire |
- |
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See All VFD Display Drivers (7)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
 Typical Operating Circuit
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX6922AQH+D
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Active |
PLCC;44 pin;311.5 mm²
Outline Drawing:21-0049 (PDF)
Land Pattern: 90-0236 (PDF)
Use pkgcode/variation: Q44+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6922AQH+TD
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Active |
PLCC;44 pin;311.5 mm²
Outline Drawing:21-0049 (PDF)
Land Pattern: 90-0236 (PDF)
Use pkgcode/variation: Q44+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6922AQH-D
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Active |
PLCC;44 pin;311.5 mm²
Outline Drawing:21-0049 (PDF)
Land Pattern: 90-0236 (PDF)
Use pkgcode/variation: Q44-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX6922AQH-TD
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Active |
PLCC;44 pin;311.5 mm²
Outline Drawing:21-0049 (PDF)
Land Pattern: 90-0236 (PDF)
Use pkgcode/variation: Q44-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX6932AAX
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Active |
SSOP;36 pin;163.4 mm²
Outline Drawing:21-0040 (PDF)
Land Pattern: 90-0098 (PDF)
Use pkgcode/variation: A36-2*
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-40°C to +125°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX6932AAX-T
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Active |
SSOP;36 pin
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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| MAX6933AAX
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Active |
SSOP;36 pin;163.4 mm²
Outline Drawing:21-0040 (PDF)
Land Pattern: 90-0098 (PDF)
Use pkgcode/variation: A36-2*
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-40°C to +125°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX6933AAX-T
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Active |
SSOP;36 pin
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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| MAX6934AQH+D
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Active |
PLCC;44 pin;311.5 mm²
Outline Drawing:21-0049 (PDF)
Land Pattern: 90-0236 (PDF)
Use pkgcode/variation: Q44+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX6934AQH+TD
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Active |
PLCC;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX6934AQH-D
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Active |
PLCC;44 pin;311.5 mm²
Outline Drawing:21-0049 (PDF)
Land Pattern: 90-0236 (PDF)
Use pkgcode/variation: Q44-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX6934AQH-TD
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Active |
PLCC;44 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX6934ATH
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Active |
TQFN;44 pin;50.4 mm²
Outline Drawing:21-0144 (PDF)
Land Pattern: 90-0128 (PDF)
Use pkgcode/variation: T4477-3*
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-40°C to +125°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX6934ATH-T
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Active |
QFN;44 pin
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Similar Products by Function
| MAX6921, MAX6931 |
20-Output, 76V, Serial-Interfaced VFD Tube Drivers |
| MAX6920 |
12-Output, 76V, Serial-Interfaced VFD Tube Driver |
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More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-3224
Rev 2;
2007-03-16
This page last modified: 2007-08-29
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