Question about TTL Chips

Torin

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I was wondering if there is a difference between a 74367 and a 74LS367?

I looked at both datasheets but couldn't find any differences. I'm just curious because the parts list for Jungle King lists them separately and found that funny because why list them separately if they do the same thing?
 
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LS basically means it consumes less power and is also faster but with no difference in functionality.
 
to over-clarify this, go to: https://en.wikipedia.org/wiki/7400_series

...and all will be explained there for you across the entire TTL specrtum:

Bipolar said:
74 – Standard TTL. the original logic family had no letters between the "74" and the part number. 10 ns gate delay, 10 mW dissipation, 4.75–5.25 V, released in 1966.

74L – Low-power. Larger resistors allowed 1 mW dissipation at the cost of a very slow 33 ns gate delay. Obsolete, replaced by 74LS or CMOS technology. Introduced 1971.

74H – High-speed. 6 ns gate delay but 22 mW power dissipation. Used in 1970s era supercomputers. Still produced but generally superseded by the 74S series. Introduced in 1971.

74S – High-speed Schottky. Implemented with Schottky diode clamps at the inputs to prevent charge storage, this provides faster operation than the 74 and 74H series at the cost of increased power consumption and cost. 3 ns gate delay, 20 mW dissipation, released in 1971.

74LS – Low-power Schottky. Implemented using the same technology as 74S but with reduced power consumption and switching speed. Typical 10 ns gate delay, a remarkable (for the time) 2 mW dissipation, 4.75–5.25 V.

74AS – Advanced Schottky, the next iteration of the 74S series with greater speed and fan-out despite lower power consumption. Implemented using the 74S's technology with "miller killer" circuitry to speed up the low-to-high transition. 1.7 ns gate delay, 8 mW, 4.5–5.5 V.

74ALS – Advanced low-power Schottky. Same technology as 74AS but with the speed/power tradeoff of the 74LS. 4 ns, 1.2 mW, 4.5–5.5 V.

74F – Fast. Fairchild's version of TI's 74AS. 3.4 ns, 6 mW, 4.5–5.5 V. Introduced in 1978.
 
Only downside to the LS parts is they typically have much lower output current (both sink and source) capabilities. Add up the loads on your parts to make sure switching to an LS part will work.
Datasheets can be found at www.TI.com
 
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