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ON Semiconductor: LS TTL Data

Posted By: tot167
ON Semiconductor: LS TTL Data

ON Semiconductor: LS TTL Data
SCILLC | 2000 | ISBN: N/A | 274 pages | PDF | 1,7 MB

Since its introduction, TTL has become the most popular
form of digital logic. It has evolved from the original
gold-doped saturated 7400 logic, to Schottky-Clamped
logic, and finally to the modern advanced families of TTL
logic. The popularity of these TTL families stem from their
ease of use, low cost, medium-to-high speed operation, and
good output drive capability.
Low Power Schottky (LSTTL) was the industry standard
logic family for many years. Since its inception, several
more modern families have come out, with equal or better
performance. We therefore recommend the VHC, High
Speed and FACT products for all new 5.0 Volt designs.
Further improvements in power reduction can be achieved
using the LVX, LCX or VCX running at 3.3 Volts.
Improvements in electrostatic discharge susceptibility in
these newer CMOS products now make them the obviate the
need for LSTTL in new designs. The VHC family is faster
and lower power with similar drive characteristics
compared to LSTTL. We highly recommend new designs
use one or more of these CMOS families.

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