Description
SN74LS139N ON Semiconductor Dual 1-of-4 Decoder/Demultiplexer, Package: Soic, Pins=16
The SN74LS139N is a high speed dual 1-of-4 decoder/demultiplexer. 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 SN74LS139N can be used as a function generator providing all four minterms of two variables. The SN74LS139N is fabricated with the Schottky barrier diode process for high speed.
Features:
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
16 pin DIP. Manufactured by Texas Instruments / On Semiconductors.
A11025
The LSTTL/MSI is a high speed Dual 1-of-4 Decoder/Demultiplexer. 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 ON Semiconductor 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
Symbol VCC TA IOH IOL Parameter Supply Voltage Operating Ambient Temperature Range Output Current High Output Current Low Min 4.75 0 Typ 5.0 25 Max Unit °C mA
Device SN74LS139M SN74LS139MEL Package 16 Pin DIP SOIC16 SOEIAJ16 Shipping 2000 Units/Box 38 Units/Rail 2500/Tape & Reel See Note 1 See Note 1
1. For ordering information on the EIAJ version of the SOIC package, please contact your local ON Semiconductor representative.
VCC O3b 9 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual InLine Package. 7 8
PIN NAMES – O3 Address Inputs Enable (Active LOW) Input Active LOW Outputs
The is a high speed dual 1-of-4 decoder/ demultiplexer fabricated with the Schottky barrier diode process. The device has two independent decoders, each of which accept two binary weighted inputs (A0, A1) and provide four mutually exclusive active LOW outputs (O0O3). Each decoder has an active LOW Enable (E). When E is HIGH all outputs are forced HIGH. The enable
can be used as the data input for a 4-output demultiplexer application. Each half of the LS139 generates all four minterms of two variables. These four minterms are useful in some applications, replacing multiple gate functions as shown in Fig. a, and thereby reducing the number of packages required in a logic network.
Manufacturer Part Number: SN74LS139N
Manufacturer: ON Semiconductor
