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.

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

Applications

    White Goods

    Gaming Machines

    Automotive

    Avionics

    Instrumentation

    Industrial Weighing

    Security

    Telecom

    VFD Modules

    Industrial Control