Description

The ML9261/62 is a monolithic IC designed for directly driving the grid and anode of the vacuum fluorescent display (VFD) tube. The device contains a 60-bit shift register, a 60-bit register circuit, and 60 VFD tube driving circuits on a single chip. Display data is serially stored in the shift register at the rising edge of a clock pulse. Setting the CL pin low allows all the VFD tube driving circuits to be driven low, which makes it possible to set the display blanking. Also, setting both of the CL and CHG pins high allows all the VFD tube driving circuits to be driven high, which provides the easy testing of all lights after final assembly of a VFD tube panel.

Specifications and features

• Logic Supply Voltage (VCC) : +3.3V±10% or +5.0V±10%
• Driver Supply Voltage (VHV): +60V
• Driver Output Current
IOHVH1 (Only one driver output : "H") : –40mA (VDISP=40V)
IOHVH2 (All the driver outputs : "H") : –120mA (VDISP=40V)
IOHVL:1mA
• Directly connected to VFD tube by using push-pull output (Pull-down resistors are not needed)
• Data Transfer Speed: 4MHz
• Package :
70-pin plastic SSOP (SSOP70-P-500-0.80-K) (Product names : ML9261MB and ML9262MB)

Application Scenarios

The ML9261/62 IC is designed for directly driving the grid and anode of a vacuum fluorescent display (VFD) tube. It is commonly used in applications where a VFD tube display is required, such as digital clocks, appliances, automotive dashboard displays, and industrial control panels.

Comparison

- Monolithic IC with integrated shift register and VFD tube driving circuits
- Directly drives the grid and anode of the VFD tube
- Allows for display blanking and easy testing of lights
- Wide operating voltage range: +3.3V to +5.0V for logic supply and +60V for driver supply
- High driver output current capabilities
- Compact and easy to integrate with various VFD tube applications

- Limited package options with only one available package type (70-pin plastic SSOP)