74LS159 4 to 16 Decoder Demultiplexer

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74LS159 is a member of the 74XXYY family of TTL ICs. This decoder utilizes TTL circuitry to decode four binary-coded inputs into one of sixteen mutually exclusive outputs when both the strobe inputs, G1 and G2, are low. The demultiplexing function is performed by using the 4 input lines to address the output line, passing data from one of the strobe inputs with the other strobe input low. The design concentrates for the chip to be used in high-performance memory-decoding or data-routing applications, requiring very short propagation delay times. The output of the IC always comes in TTL which makes it easy to work with other TTL devices and microcontrollers. The IC 74LS159 is smaller in size and it has a much faster speed which makes it reliable in every kind of device.

74ls159 ic

What is a Demultiplexer?

A demultiplexer is a combinational logic circuit designed to switch one common input line to one of several separate output lines. So, A demultiplexer converts a serial data signal at the input to a parallel data at its output lines.

74LS159 Key Features & Specifications

  • Technology Family: LS
  • Rating: Catalog
  • VCC (min): 4.75V
  • VCC (max): 5.25V
  • Supply voltage: 1.0V to 5.5V
  • Frequency at nominal voltage: 35 MHz
  • Typical propagation delay: 21nS
  • Low power consumption: 32mW
  • Operating temperature: -40ºC to +125ºC
  • ESD protection
  • IOL (Max): 8mA
  • IOH (Max): 8mA
  • Balanced propagation delays
  • Designed specifically for high speed
  • Channels (#): 4
  • Configuration: 4:16
  • Product type: Standard

74LS159 Pinout

74ls159 pinout
Pin No.Pin NameDescription
1Y0Decoder Output Pin Y0
2Y1Decoder Output Pin Y1
3Y2Decoder Output Pin Y2
4Y3Decoder Output Pin Y3
5Y4Decoder Output Pin Y4
6Y5Decoder Output Pin Y5
7Y6Decoder Output Pin Y6
8Y7Decoder Output Pin Y7
9Y8Decoder Output Pin Y8
10Y9Decoder Output Pin Y9
11Y10Decoder Output Pin Y10
12GNDGround Pin
13Y11Decoder Output Pin Y11
14Y12Decoder Output Pin Y12
15Y13Decoder Output Pin Y13
16Y14Decoder Output Pin Y14
17Y15Decoder Output Pin Y15
18G1Strobe Input Pin G1
19G2Strobe Input Pin G2
20DDecoder Input D
21CDecoder Input C
22BDecoder Input B
23ADecoder Input A
24VccChip Supply Voltage

Applications

The 74LS159 IC has a number of uses, some of them are listed as below:

  • Serves the function of Speed synchronization of multiple motors in industries

74LS159 Datasheet

You can download the 74LS159 4-16 Decoder/Demultiplexer IC Datasheet from the link given below:

See Also: 74LS122 Retriggerable Monostable Multivibrator IC | 74LS109 Dual JK Positive Edge-Triggered Flip-Flop IC | 74LS92 4-Bit Divide By Twelve Binary Counter IC