DM74ALS137MX

Overview

The DM74ALS137MX is a 3-to-8 line decoder/demultiplexer with address latches manufactured by onsemi. It operates within a supply voltage range of 4.5 V to 5.5 V and supports surface-mount installation in a 16-lead SOIC package (M16A). The device features three enable inputs (G1, G2, GL) for independent control and cascading. Switching specifications are guaranteed over the full operating temperature range of 0°C to +70°C.

Feature Summary

• Combines a decoder function with a 3-bit address latch to store select inputs when the latch-enable signal transitions from LOW to HIGH.
• Incorporates three enable inputs (G1, G2, GL) to simplify system design and facilitate cascading multiple units.
• Utilizes an advanced oxide-isolated, ion-implanted Schottky TTL process to achieve low power dissipation.

Applications

• Implementing glitch-free decoders in strobed applications
• Bus-oriented systems requiring stored-address functionality

Procurement Notes

Verify component authenticity through authorized channels as this part may be obsolete or subject to change. Confirm that the specific ordering suffix matches the required tape and reel packaging configuration. Ensure compatibility with existing logic levels and thermal management requirements before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring decoded outputs controlled by latched addresses rather than direct inputs. Verify that the 16-lead SOIC package fits the available PCB footprint. Consider the propagation delay characteristics relative to system clock speeds and ensure the enable logic aligns with the desired decoding behavior.

Part Context

This device belongs to the 74ALS logic family, characterized by advanced Schottky technology for improved speed and lower power consumption compared to standard TTL. The manufacturer transitioned from Fairchild Semiconductor to onsemi, maintaining the same functional specifications and pinout configurations for legacy compatibility.

Replacement Considerations

SN74ALS137AN