74VHC138MX Datasheet PDF – 3-to-8 Decoder/Demultiplexer

Part Number : 74VHC138MX

Function : 3-to-8 Decoder/Demultiplexer.

Pacakge : SOIC-16

Manufacturers : Fairchild Semiconductor

Image :

74VHC138MX datasheet


Description :

The VHC138 is an advanced high speed CMOS 3-to-8 decoder/demultiplexer fabricated with silicon gate CMOS technology.  It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the  CMOS low power dissipation. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.


74VHC138MX pinout


1. High Speed : tPD = 5.7ns (typ) at TA = 25°C
2. Low power dissipation : ICC = 4 mA (max.) at TA = 25°C
3. High noise immunity : VNIH = VNIL = 28% VCC (min.)
4. Power down protection provided on all inputs
5. Pin and function compatible with 74HC138

Other data sheets within the file : 74VHC138M, 74VHC138MTC, 74VHC138, 74VHC138N,


74VHC138MX Datasheet PDF Download

74VHC138MX pdf


74HCT138 Datasheet – 3-to-8 Line Decoder / Demultiplexer

Part Number : 74HCT138


Package : DIP 16, PLCC 20 Pin

Manufacturers : Texas Instruments

Pinouts :
74HCT138 datasheet

Description :

The ’HCT138 devices are designed for high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can minimize the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible.

Ordering Information

Other data sheets within the file : 54HCT138FK, 54HCT138J, 54HCT138W, 74HCT138D

74HCT138 Datasheet PDF Download

74HCT138 pdf