74F538 1-of-8 Decoder/Demultiplexer IC with 3-State Outputs | Datasheet

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The 74F538 IC is a part of the high speed 74F IC family. The 74F538 IC is a 1-of-8 decoder/demultiplexer that accepts three address (A0 – A2) input signals and decodes them to select one of eight mutually exclusive outputs. A Polarity control (P) input determines whether the outputs are active Low or active High. The 74F538 has 3-State outputs, and a High signal on the Output Enables (OEn) inputs will force all outputs to the high impedance state. Two active High (E2, E3) and two active Low (E0, E1) inputs are available for easy expansion to 1-of-32 decoding with four packages, or for data demultiplexing to 1-of-8 or 1-of-16 destinations. 74F538 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL.

What is a Decoder/Demultiplexer Circuit?

A decoder/demultiplexer is a combinational logic circuit & an integral part of todays consumer scale electronics. It is 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.

74F538 Key Features & Specifications

  • Technology Family: F
  • Rating: Catalog
  • Output Polarity Control
  • Data Demultiplexing Capability
  • Multiple Enables for Expansion
  • Storage Temperature: −65°C to +150°C
  • Ambient Temperature under Bias: −55°C to +125°C
  • Junction Temperature under Bias: −55°C to +150°C
  • VCC Pin Potential to Ground Pin: −0.5V to +7.0V
  • Input Voltage: −0.5V to +7.0V
  • Input Current: −30 mA to +5.0 mA
  • Voltage Applied to Output in HIGH State (with VCC = 0V)
  • Standard Output Voltage: −0.5V to VCC
  • 3-State Output Voltage: −0.5V to +5.5V
  • ESD Protection > 4000 Volts

74F538 Pinout

Pin No.Pin NameDescription
1O23-State Output Pin O2
2O13-State Output Pin O1
3O03-State Output Pin O0
4OE1′Active Low Output Enable Input OE1′
5OE2′Active Low Output Enable Input OE2′
6A0Address Input Pin A0
7A1Address Input Pin A1
8O53-State Output Pin O5
9O63-State Output Pin O6
10GNDGround Pin
11O73-State Output Pin O7
12PPolarity Control Input Pin
13E4Enable Input Pin E4
14E3Enable Input Pin E3
15E2′Active Low Enable Input E2′
16E1′Active Low Enable Input E1′
17A2Address Input Pin A2
18O43-State Output Pin O4
19O33-State Output Pin O3
20VccChip Supply Voltage

Applications

The 74F538 Decoder has a wide array of applications. Some of them are mentioned down below:

  • Usually used in electronic circuits to convert instructions into CPU control signals.
  • Also used for data transfer in logical circuits & testing equipment.

74F538 Datasheet

You can download the datasheet for 74F538 1-of-8 Decoder IC with 3-State Outputs from the link provided 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

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