SN74AHCT138DGVR

Signal Switches, Multiplexers, Decoders Overview

The SN74AHCT138DGVR is a 3-line to 8-line decoder and demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 1.5 V to 5.5 V and features TTL-compatible inputs. The device utilizes a TVSOP-16 package and supports an operating temperature range from -40°C to 85°C. It provides active-low outputs with high drive capabilities, including ±8 mA output currents. Designed for high-speed memory decoding and data transmission systems, it incorporates three enable inputs to simplify cascading.

Signal Switches, Multiplexers, Decoders Feature Summary

• Incorporates three enable inputs (two active-low, one active-high) to facilitate system expansion and data reception without external logic gates.
• Features TTL-voltage compatible inputs designed specifically for high-performance memory decoding and data-routing applications requiring short propagation delays.
• Provides robust electrostatic discharge protection exceeding JESD standards for both human-body and charged-device models.

Signal Switches, Multiplexers, Decoders Applications

• High-performance memory decoding systems
• Data-transmission systems
• Data-routing applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'DGVR' corresponds to the TVSOP-16 package and tape-and-reel carrier configuration. Confirm that the component meets RoHS compliance requirements and matches the specified moisture sensitivity level for your assembly process. Ensure the selected variant aligns with the required operating temperature range and electrical specifications for your design.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-level input compatibility is required alongside CMOS performance characteristics. The inclusion of multiple enable inputs makes it suitable for designs needing complex decoding or cascading capabilities. Consider the TVSOP-16 package dimensions and thermal resistance values if space constraints or heat dissipation are critical factors in the PCB layout.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SNx4AHCT138 family of 3-line to 8-line decoders and demultiplexers. The family includes various package options such as SOIC, SSOP, TSSOP, and VQFN, catering to different board space and manufacturing needs. The AHCT series specifically bridges TTL input levels with advanced CMOS technology, ensuring compatibility with legacy systems while offering modern speed and power efficiency.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHCT138DR

Signal Switches, Multiplexers, Decoders FAQ

How many enable inputs does the SN74AHCT138DGVR have?

The device incorporates three enable inputs: two active-low (G2A, G2B) and one active-high (G1).

What is the input voltage compatibility of this decoder?

The inputs are TTL-voltage compatible, allowing direct interfacing with TTL logic sources.