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IC Electronic information

91. How to choose digital integrated circuits?

In Electronic Infomation Category: 9 | on October 25,2011

When choosing an integrated chip, in addition to device-specific functions, also need to consider the following universal factors.

for digital devices: power supply voltage range, signal status and 91 datasheet and level threshold, closing resistor, fan-out factor, the maximum operating power, single-door delay, noise margin, operating temperature range, power and 91 price and packaging and 91 suppliers and so on. Speed ??and power are the two digital devices fixed target, largely determine the use of devices, high speed and low power consumption is also associated with the development of computer compatible. In general digital device, 74LS series TTL devices have faster speed, but power consumption is relatively large; CMOS wide range of power devices, anti-jamming performance, but slower than the 74LS series quickly; 74HC takes into account the two are the advantages of a 7415 CMOS high-speed and low power consumption, performance indicators are better than the 74LS series, can completely replace the 74LS series devices. Many ultra-large scale integrated chips such as CPU, programmable I / O chips there is a similar chip manufactured by different processes, which should give priority to low-power CMOS types.

91 datasheet91 suppliers91 Price

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