TC74HC139APF

Overview

The TC74HC139APF is a dual 2-to-4 line decoder/demultiplexer manufactured by Toshiba Semiconductor and Storage. It utilizes silicon gate C2MOS technology to achieve high-speed operation comparable to LSTTL while maintaining low power dissipation. The device operates on a single power supply ranging from 2V to 6V and features active-low enable inputs that can be used for gating or demultiplexing data. All inputs include protection circuits against static discharge. The component is housed in a 16-DIP package with a typical weight of 1.00g.

Feature Summary

• High-speed logic operation similar to equivalent LSTTL
• Low power dissipation characteristics
• Active-low enable input supports gating and demultiplexing functions
• Built-in protection circuits against static discharge

Applications

• General electronics applications including computers and office equipment
• Industrial robots and measuring equipment
• Home electronics appliances

Procurement Notes

Verify the specific package suffix 'PF' against official Toshiba documentation, as datasheets reference AP (DIP), AF (SOP), and AFN (JEDEC SOP). Confirm RoHS compliance status directly with the manufacturer. Ensure design accounts for derating factors at temperatures above 65°C. Validate operating parameters against the absolute maximum ratings provided in the specification sheet.

Selection Notes

Select this component when a dual 2-to-4 decoder is required with CMOS compatibility. It serves as a pin-compatible replacement for 74LS139 devices. Consider the wide operating voltage range of 2V to 6V for flexible power supply designs. Verify that the DIP-16 package meets the physical layout requirements of the target circuit board.

Part Context

This part belongs to the TC74HC139A series of dual 2-to-4 line decoders. It is designed for general-purpose digital logic applications requiring high speed and low power consumption. The family includes variants with different packaging options such as SOP and SOL, all sharing identical electrical characteristics and pin configurations.

Replacement Considerations

The TC74HC139A is functionally and pin-compatible with the 74LS139. Designers replacing TTL components should verify that the system voltage levels align with the HC series specifications.