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MFG:MAX D/C:04+
Part Number: MAX6931AUI
MFG: MAX
D/C: 04+
Description: The MAX6921/MAX6931 are 20-output, 76V, vacuum fluorescent display (VFD) tube drivers that interface a...
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MAX6931AUI
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General Description
MAX6931AUI 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 MAX6850MAX6853, 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 man 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).
MAX6931AUI Maximum Ratings
Voltage (with respect to GND)
VBB.........................................................................-0.3V to +80V
VCC...........................................................................-0.3V to +6V
VSS(MAX6931 only).................................................-12V to +0.3V
VBB- VSS(MAX6931 only)........................................-0.3V to +80V
OUT_ (MAX6921 only)......................(GND - -0.3V) to (VBB+ 0.3V)
OUT_ (MAX6931 only)........................(VSS- -0.3V) to (VBB+ 0.3V)
All Other Pins...............................................-0.3V to (VCC+ 0.3V)
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 ...................................90mA
Total OUT_ Pulsed (1ms max, 1/4 max duty)
Source Current .................................................................-960mA
VBB.........................................................................-0.3V to +80V
VCC...........................................................................-0.3V to +6V
VSS(MAX6931 only).................................................-12V to +0.3V
VBB- VSS(MAX6931 only)........................................-0.3V to +80V
OUT_ (MAX6921 only)......................(GND - -0.3V) to (VBB+ 0.3V)
OUT_ (MAX6931 only)........................(VSS- -0.3V) to (VBB+ 0.3V)
All Other Pins...............................................-0.3V to (VCC+ 0.3V)
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 ...................................90mA
Total OUT_ Pulsed (1ms max, 1/4 max duty)
Source Current .................................................................-960mA
MAX6931AUI 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 (MAX6931 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
Small 28-Pin TSSOP Package
-40°C to +125°C Temperature Range
3V to 5.5V Logic Supply Range
8V to 76V Grid/Anode Supply Range
-11V to 0V Filament Bias Supply (MAX6931 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
Small 28-Pin TSSOP Package
-40°C to +125°C Temperature Range
MAX6931AUI Typical Application
White GoodsIndustrial Weighing
Gaming MachinesSecurity
AutomotiveTelecom
AvionicsVFD Modules
InstrumentationIndustrial Control
Gaming MachinesSecurity
AutomotiveTelecom
AvionicsVFD Modules
InstrumentationIndustrial Control
MAX6931AUI Connection Diagram
MAX6931AUI
PDF/DataSheet Download
- Datasheet: MAX6931AUI
- File Size: 289600 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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