SN54ALS138AJ ,3-Line To 8-Line Decoders/Demultiplexers
SN54ALS139J , DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SN54ALS151J , 1-OF-8 DATA SELECTORS/MULTIPLEXERS
SN54ALS153J ,Dual 1-Of-4 Data Selectors/Multiplexersmaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage, V ..
SN54ALS153J ,Dual 1-Of-4 Data Selectors/Multiplexerselectrical characteristics over recommended operating free-air temperature range (unlessotherwise n ..
SN54ALS157A ,Quadruple 1-Of-2 Data Selectors/Multiplexers ..
SN74CBTLV3245AZQNR ,Low-Voltage Octal FET Bus Switch 20-BGA MICROSTAR JUNIOR -40 to 85Maximum Ratingsover operating free-air temperature range (unless otherwise noted)MIN MAX UNITV Supp ..
SN74CBTLV3245DGVR , LOW-VOLTAGE OCTAL FET BUS SWITCH
SN74CBTLV3245PWR , LOW-VOLTAGE OCTAL FET BUS SWITCH
SN74CBTLV3251DR ,Low-Voltage 1-Of-8 FET Multiplexer/Demultiplexer SCDS054I − MARCH 1998 − REVISED OCTOBER 2 ..
SN74CBTLV3253D ,Low-Voltage Dual 1-of-4 FET Multiplexer/DemultiplexerElectrical Characteristics ...... 512.2 Community Resources...... 126.6 Switching Characteristics.. ..
SN74CBTLV3253DBQR ,Low-Voltage Dual 1-of-4 FET Multiplexer/DemultiplexerFeatures 3 DescriptionThe SN74CBTLV3253 device is a dual 1-of-4 high-1• Functionally Equivalent to ..
SN54ALS138AJ
3-Line To 8-Line Decoders/Demultiplexers
Package Options Include PlasticSmall-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
descriptionThe ′ALS138A and ′AS138 are 3-line to 8-line
decoders/demultiplexers designed for high-
performance memory-decoding or data-routing
applications requiring very short propagation
delay times. In high-performance systems, these
devices can be used to minimize the effects of
system decoding. When employed with
high-speed memories with a fast enable circuit,
the delay times of the decoder and the enable time
of the memory are usually less than the typical
access time of the memory. The effective system
delay introduced by the Schottky-clamped system
decoder is negligible.
The conditions at the binary-select (A, B, and C)
inputs and the three enable (G1, G2A, and G2B)
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 SN54ALS138A and SN54AS138 are characterized for operation over the full military temperature range
of –55°C to 125°C. The SN74ALS138A and SN74AS138 are characterized for operation from 0°C to 70°C.
G2A
G2B
SN54ALS138A, SN54AS138... FK PACKAGE
(TOP VIEW)ANCY5
GND
NC – No internal connection
G2A
G2B
GND
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
