Components under considerationComparisson LS, HC, F
06/18/2009
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74xx00 LS HC F Unit Winner
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VOH 3.4 Vcc 2.5 V HC (Output swing)
VOL 0.35 0 0.5 V
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
VIH 2.0 3.15 2.0 V HC (Input swing)
VIL 0.8 1.35 0.8 V
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
IIH 0.02 0.0001 0.005 mA HC (Input Loading)
IIL 0.36 0.0001 0.6 mA
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Icc 2.4 0.04 6.8 mA HC (Power consumption)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Delay 10 8 3.7 ns F (Speed)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Price 0.29 0.22 0.07 USD F (Jameco 10+)
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CONCLUSSION:
HCMOS seems to be the way to go for this project unless a very high speed is needed for some specific circuit in which case (and only for that circuit) I would chose F components instead.
ICs
Note: Prices are from Jameco (buying 10 or more) unless specified otherwise.
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Part No. Pins Price Delay (ns) Description
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74HC00 14 0.22 9 QUAD 2-INPUTS NAND GATE
74HC04 14 0.25 11 HEX INVERTER
74HC27 14 0.15 23 TRIPPLE 3-INPUTS OR GATE
74LS27 14 0.49 10 TRIPPLE 3-INPUTS OR GATE
74HC32 14 0.29 12 QUAD 2-INPUTS OR GATE
74F32 14 0.29 4 QUAD 2-INPUTS OR GATE
74HC4078 14 ---- 8 8-INPUTS OR/NOR GATE (Electronic Glod Mine: $0.35)
74LS138 16 0.45 26 3-TO-8 DECODER DEMULTIPLEXER
74F138 16 0.25 6 3-TO-8 DECODER DEMULTIPLEXER
74F139 16 0.25 6 DUAL 2-TO-4 DECODER DEMULTIPLEXER
74HC157 16 ---- 13 QUAD 2-INPUTS MULTIPLEXER
74LS279 16 0.65 QUAD S-R BISTABLE (Electronic Gold Mine: $0.29)
74LS161 16 0.49 30 4-BITS BIN COUNTER W/LOAD AND CLR
74LS169 16 0.89 30 4-BITS BIN COUNTER W/LOAD AND UP/DN
74LS244 20 0.49 15 8-BITS 3-STATE BUFFER
74F244 20 0.07 8 8-BITS 3-STATE BUFFER
74HC244 20 0.22 30 8-BITS 3-STATE BUFFER
74HC273 20 0.29 25 8-BITS REG
74HC374 20 0.35 15 8-BITS REG W/3-STATE OUTPUT
LINEAR
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Vendor Part No. Price Description
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Digi-Key LM1084IT-5.0-ND 3.13 LM1084 - 5V POS VOLTAGE REG 5A
Digi-Key MIC29500-5.0VWT-ND 8.71 5V POS VOLTAGE REG LOW DROP 7.5A
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Pasive
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Vendor Part No. Price Delay (ns) Description
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Jameco 1N4148 0.012 4 SWITCHING DIODE
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Mechanical
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Vendor Part No. Price Description
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Jameco 206594CG 10.95 Prototyping Board 5.50x8.00 INCH Single Side, Pad per hole
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Digi-Key V2011-ND 19.47 Prototyping Board 6x9 INCH 2-Side, Pad per hole (throug)
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