general description
The devices in this series of dual core sense
amplifiers convert bipolar millivolt-level memory
sense signals to saturated logic levels. The design
employs a common reference input which allows
the input threshold voltage level of both amplifiers
to be adjusted. Separate strobe inputs provide time
discrimination for each channel. Logic inputs and
outputs are DTUTTL compatible. All devices of
the series have identical preamplifier configurations,
while various logic connections are provided
to suit the specific application.
The LM5520/LM7520 has output latch capability
and provides sense, strobe, and memory function
for two sense lines. The LM5522/LM7522 contains
a single open collector output which may be
used to expand the number of inputs of the
LM5520/LM7520, or to drive an external Memory
Data Register (MDR). Intended for small memories,
the two channels of the LM5524/LM7524 are
independent with two separate outputs. The
LM5534/LM7534 is similar to the LM55241
LM7524 but has uncommitted, wire-aRable outputs.
The LM5528/LM7528 has the same logic
configuration of the LM5524/LM7524 and in
addition provides separate low impedance Test
Points at each preamplifier output. A similar
device having uncommitted, wire-aRable outputs
is the LM5538/LM7538.

features
High speed
Guaranteed narrow threshold uncertainty over
temperature
Adjustable input threshold voltage
Fast overload recovery times
Two amplifiers per package
Molded or cavity dual-in-line package
Six logic configurations