74VHC139MTR

Signal Switches, Multiplexers, Decoders Overview

The STMicroelectronics 74VHC139MTR is an advanced high-speed CMOS dual 2-to-4 line decoder/demultiplexer. It features a typical propagation delay of 5.0 ns at VCC = 5V and low power dissipation with a maximum quiescent current of 4 µA at 25°C. The device operates within a voltage range of 2V to 5.5V, providing symmetrical output impedance with minimum source/sink currents of 8 mA. It includes power-down protection on all inputs, allowing 0 to 7V acceptance regardless of supply voltage. The component offers improved latch-up immunity and 2kV ESD protection.

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual 2-to-4 decoding architecture with active low enable inputs for gating or demultiplexing
• High noise immunity with defined input thresholds relative to supply voltage
• Power-down protection enabling safe input voltage levels independent of the operating supply
• Balanced propagation delays between address inputs and outputs

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in memory systems
• Demultiplexing data streams using the enable pin as a data input
• Gating logic signals within digital circuits
• Interfacing 5V logic environments to 3V logic systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific package variant against project requirements, as the M74VHC139 series includes both SOP and TSSOP options. Confirm that the lead-free status and RoHS compliance meet regulatory standards for the intended deployment region. Ensure that static discharge precautions are maintained during handling due to the CMOS technology used in fabrication.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when dual independent decoders are required within a single package to save board space. The 74VHC139MTR is suitable for applications demanding high speed with low power consumption. Consider the 2V to 5.5V operating range for flexibility in mixed-voltage designs. Verify that the 8 mA output drive capability meets the load requirements of the connected circuitry.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74VHC family of advanced high-speed CMOS logic devices manufactured by STMicroelectronics. The 74VHC series utilizes sub-micron silicon gate technology for enhanced performance compared to standard HC logic. The 74VHC139 specifically provides two independent 2-to-4 decoders, offering pin and function compatibility with the legacy 74 Series 139 while improving electrical characteristics.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct replacements include other manufacturers' 74VHC139 variants in SOP-16 or TSSOP-16 packages. Ensure substitute parts maintain the same 2V to 5.5V operating voltage range and 8 mA output drive specifications. Verify that any alternative maintains the dual decoder configuration and compatible pinout for seamless integration.