The 74AC11138 circuit is designed to be used in high-performance
memory-decoding or data-routing applications requiring very short
propagation delay times. In high-performance memory systems, this
decoder can be used to minimize the effects of system decoding. When
employed with high-speed memories utilizing a fast enable circuit,
the delay times of this decoder and the enable time of the memory are
usually less than the typical access time of the memory. This means
that the effective system delay introduced by the decoder is
negligible.
The conditions at the binary-select (A, B, C) inputs and the three
enable (G1, , ) inputs select one of eight output
lines. Two active-low and one active-high enable inputs reduce the
need for external gates or inverters when expanding. A 24-line
decoder can be implemented without external inverters and a 32-line
decoder requires only one inverter. An enable input can be used as a
data input for demultiplexing applications.
The 74AC11138 is characterized for operation from -40°C to
85°C.
The 74AC11138 circuit is designed to be used in high-performance
memory-decoding or data-routing applications requiring very short
propagation delay times. In high-performance memory systems, this
decoder can be used to minimize the effects of system decoding. When
employed with high-speed memories utilizing a fast enable circuit,
the delay times of this decoder and the enable time of the memory are
usually less than the typical access time of the memory. This means
that the effective system delay introduced by the decoder is
negligible.
The conditions at the binary-select (A, B, C) inputs and the three
enable (G1, , ) inputs select one of eight output
lines. Two active-low and one active-high enable inputs reduce the
need for external gates or inverters when expanding. A 24-line
decoder can be implemented without external inverters and a 32-line
decoder requires only one inverter. An enable input can be used as a
data input for demultiplexing applications.
The 74AC11138 is characterized for operation from -40°C to
85°C.