零件编号 : 7493, 74HC93, 74HCT93
描述
4-bit binary ripple counter
制造商 : NXP Semiconductors.
引脚图 :
描述
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The 74HC93, 74HCT93 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The 74HC/HCT93 are 4-bit binary ripple counters. The devices consis of four master-slave flip-flops internally connected to provide a divide-by-two section and a divide-by-eight section. Each section has a separate clock input (CP0 and CP1) to initiate state changes of the counter on the HIGH-to-LOW clock transition. State changes of the Qn outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and should not be used for clocks or strobes.
The 74HC/HCT93 are 4-bit binary ripple counters.
7493 Datasheet PDF
文件中的其他数据表：
7493, 74HC93, 74HC93D, 74HC93N, 74HCT93
