STMicroelectronics 74LCX139 Dual 2-to-4 Decoder Datasheet

74LCX139 is a low voltage CMOS dual 2 to 4 line Decoder / Demultiplexer fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for low power and high speed 3.3V applications; it can be interfaced to 5V signal environment for inputs. The active low enable input can be used for gating or as a data input for demultiplexing applications. While the enable input is held high, all four outputs are high independently of the other inputs. It has same speed performance at 3.3V than 5V AC/ACT family, combined with a lower power consumption. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.


STMicroelectronics 74LCX139 Dual 2-to-4 Decoder Datasheet - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
17
File format
PDF
File size
312 KB
Published
10 August, 2012
Updated
30 September, 2023
MD5 checksum
50502C7BF54BDA98ECEE9786BC54D9DA

About this manual

The 74LCX139 is a low voltage CMOS dual 2 to 4 line Decoder / Demultiplexer fabricated with sub-micron silicon gate and double-layer metal wiring CMOS technology. It is ideal for low power and high speed 3.3V applications and can be interfaced to 5V signal environments for inputs.

The device features symmetrical output impedance with a minimum of 24mA at Vcc = 3V, ensuring PCI bus levels are guaranteed. It includes power down protection on inputs and outputs, as well as ESD performance exceeding 2000V HBM and 200V MM. The part is available in SO-16 and TSSOP16 packages.

What's inside

  • Logic symbols and I/O equivalent circuit
  • Pin settings
  • Truth table
  • Logic diagram
  • Maximum rating
  • Recommended operating conditions
  • Electrical characteristics
  • AC electrical characteristics
  • Capacitive characteristics
  • Revision history

Specifications

High speed propagation delay6.2ns (Max)
Output current (Min)24mA
ESD performance (HBM)> 2000V
Latch-up performance500mA
Operating temperature-40 to 85 °C

Frequently asked questions

Is the 74LCX139 compatible with 5V inputs?

Yes, it has 5V tolerant inputs and can be interfaced to 5V signal environments.

What packages are available for the 74LCX139?

The device is available in SO-16 and TSSOP16 packages.

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