论述了采用硅栅 CMOS工艺研制的热印头驱动 ASIC,它由 64位移位寄存器、64位锁存器、64位输出驱动电路和外围缓冲电路组成 .其电路性能为 :在 0 .5 kΩ负载电阻情况下 ,最大输出电流 48m A,输出管饱和压降 1 .8V,输出管击穿电压 3.5 V,时钟频率 5.2MHz.在传真机热印头上使用 ,可实现高速打印和高分辨率 This paper discusses the thermal head driver ASIC developed by silicon gate CMOS process, which consists of a 64-bit shift register, a 64-bit latch, a 64-bit output driver circuit and a peripheral snubber circuit with a performance of 0.5 kΩ Load resistance case, the maximum output current of 48m A, the output tube saturation voltage drop 1.8V, the output tube breakdown voltage of 3.5V, the clock frequency of 5.2MHz. In the fax machine thermal head, enabling high-speed printing and high resolution