MAX6921
Info: : PRODUCTION
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MAX6921

20-Output, 76V, Serial-Interfaced VFD Tube Drivers

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Info: : PRODUCTION tooltip
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Part Details
Part Models 8
1ku List Price Starting From $5.21
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
Additional Details
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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 shutdown mode. Display intensity can 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).

Applications

  • Automotive
  • Avionics
  • Gaming Machines
  • Industrial Control
  • Industrial Weighing
  • Instrumentation
  • Security
  • Telecom
  • VFD Modules
  • White Goods
Part Models 8
1ku List Price Starting From $5.21

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX6921AQI+
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MAX6921AQI+T
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MAX6921AUI+
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MAX6921AUI+T
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MAX6921AWI+
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MAX6921AWI+T
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MAX6921AWI/V+
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MAX6921AWI/V+T
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Dec 11, 2018

- 1754N

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MAX6921AUI+

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PRODUCTION

MAX6921AUI+T

PRODUCTION

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