|FETs||Triacs||Infra-red||ICs||LEDs||Speakers and microphones||Sensors|
|Audio amplifier||LM380||National semiconductors
Circuit for LM380
The 74 series logic is divided up into families. The family is indicated
by the letters after the 74. For example there are several different NAND
gates available 7400, 74LS00, 74HCT00 and 74HC00, all of these chips have
the same pinout but have slight electrical differences.
The 7400 (TTL) is the original TTL logic family, it needs quite a lot of power to operate and is relatively slow to change state.
The 74LS00 (low power schottky)is faster than the original TTL and uses less power, 74 and 74LS chips can be used together.
The 74HC00 (high speed CMOS) is faster than the LS uses much less power but has slightly different logic thresholds so should not be used with 74 or 74LS series chips.
The 74HCT00 (high speed CMOS, TTL compatible) is designed to be used with the both the old logic 74 and 74LS series and the new 74HC series.
A Microsoft Word document containing common 74 series pin outs is available here.
Note: Dual means there are 2 gates in the chip, Quad means there are 4 gates in the chip and Hex means there are 6 gates in the chip
ST NE555 ST TS555C (low power)
|Quad 2-input NAND gate||74xx00||Fairchild Semiconductor|
|Quad 2-input NOR gate||74xx02||Fairchild Semiconductor|
|Hex NOT gate||74xx04||Fairchild Semiconductor|
|Quad 2-input AND gate||74xx08||Fairchild Semiconductor|
|Hex Schmitt trigger NOT gate||74xx14||Fairchild Semiconductor|
|Dual 4-input NAND gate||74xx20||Fairchild Semiconductor|
|Quad 2-input OR gate||74xx32||Fairchild Semiconductor|
|BCD to 7-segment decoder||74xx47||Fairchild Semiconductor|
|Dual D-type flip-flop||74xx74||Fairchild Semiconductor|
|4-bit magnitude comparator||74xx85||Fairchild Semiconductor|
|Quad 2-input XOR gate||74xx86||Fairchild Semiconductor|
|4 bit Counter||74xx93||QMW
|Quad 3-state buffer||74xx125||Fairchild Semiconductor|
|13-input NAND gate||74xx133||Fairchild Semiconductor|
|Dual 4-input multiplexer||74xx153||Fairchild Semiconductor|
|Quad 2-input multiplexer||74xx157||Fairchild Semiconductor|
|Shift register (serial to parallel)||74xx164||Fairchild Semiconductor|
|Shift register (parallel to serial)||74xx165||Fairchild Semiconductor|
|4 bit Latch||74xx175||Fairchild Semiconductor|
|4-bit up/down counter||74xx193||Fairchild Semiconductor|
|BCD to 7-segment display decoder||74xx4511||Texas Instruments|
The microcontrollers we mainly use are: