SN74LS139N ,DUAL 1-OF-4 DECODER/ DEMULTIPLEXERSN54/74LS139DUAL 1-OF-4 DECODER/DEMULTIPLEXERThe LSTTL/MSI SN54/74LS139 is a high speed Dual 1-of-4 ..
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SNJ54S09J ,Quadruple 2-Input Positive-AND Gates With Open-Collector Outputs
SNJ54S10J ,Triple 3-Input Positive-NAND Gates
SNJ54S10J ,Triple 3-Input Positive-NAND Gates
74LS139-SN54LS139J-SN74LS139N
Decoder/Demultiplexer
DUAL 1-OF-4 DECODER/
DEMUL TIPLEXERThe LSTTL/MSI SN54/74LS139 is a high speed Dual 1-of-4 Decoder/De-
multiplexer. The device has two independent decoders, each accepting two
inputs and providing four mutually exclusive active LOW Outputs. Each
decoder has an active LOW Enable input which can be used as a data input
for a 4-output demultiplexer. Each half of the LS139 can be used as a function
generator providing all four minterms of two variables. The LS139 is
fabricated with the Schottky barrier diode process for high speed and is
completely compatible with all Motorola TTL families. Schottky Process for High Speed Multifunction Capability Two Completely Independent 1-of-4 Decoders Active Low Mutually Exclusive Outputs Input Clamp Diodes Limit High Speed Termination Effects ESD > 3500 Volts
CONNECTION DIAGRAM DIP (TOP VIEW)--- -- -- -- ---- --- -- -- -- -- -- -
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
PIN NAMES LOADING (Note a)A0, A1
O0–O3
Address Inputs
Enable (Active LOW) Input
Active LOW Outputs (Note b)
NOTES: 1 TTL Unit Load (U.L.) = 40 μA HIGH/1.6 mA LOW. The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)
Temperature Ranges.
