HV574中文资料80-Channel, Serial to Parallel Converter w/ Push-Pull Outputs数据手册Microchip规格书

描述 Description

The HV574 is a low-voltage serial to high-voltage parallel con-verter with push-pull outputs. This device has been designed for use as a driver for printer applications. It can also be used in any application requiring multiple output high-voltage current sour-cing and sinking capability such as driving plasma panels, vacuum fluorescent displays, or large matrix LCD displays.The device has 4 parallel 20-bit dynamic shift registers, permitting data rates 4X the speed of one (they are clocked together). There are 80 static latches and control logic to perform the polarity select and blanking of the outputs. HVOUT1 is connected to the first stage of the first shift register through the polarity and blanking logic. Data is shifted through the shift registers on the logic low to high transition of the clock. The DIR pin causes CCW shifting when connected to GND, and CW shifting when connected to VDD. A data output buffer is provided for cascading devices. This output reflects the current status of the last bit of the shift register (HVOUT80). Operation of the shift register is not affected by the LE (latch enable), BL (blanking), or the POL (polarity) inputs. Transfer of data from the shift registers to the latches occurs when the LE (latch enable) input is high. The data in the latches is stored when LE is low.

特性 Features

• HVCMOS® technology
• 5.0V CMS Logic
• Output voltage up to 80V
• Low power level shifting
• 100MHz equivalent data rate using four dynamic shift registers
• Latched data outputs
• Foreward and reverse shifting options (DIR pin)
• Diode to VPP allows efficient power recovery
• Outputs may be hot switched

简介

HV574属于集成电路（IC）的移位寄存器。由制造生产的HV574移位寄存器移位寄存器是低级逻辑器件，通常用于在串行和并行方式之间转换数字逻辑信号形式的数据，或在数字字内移动数据位的位置。移位寄存器通常使用集成到一个设备中的一组触发器来实现，常用于集成度更高的逻辑器件，但仍可用于 I/O 扩展等应用，在这些应用中离散形式的函数可能会非常有用。