SN74ALS137AN

Signal Switches, Multiplexers, Decoders Overview

The SN74ALS137AN is a 3-line to 8-line decoder/demultiplexer from the ALS logic series, manufactured by Texas Instruments. It integrates latches on the three address inputs (A, B, and C) to store the selected address when the latch-enable (LE) input transitions from low to high. The device features two independent output enables (G1 and G2). All outputs are forced high if G1 is low or G2 is high. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a propagation delay of up to 20 ns at 5.5 V with a 50 pF load. The component is housed in a standard plastic 16-pin DIP package.

Signal Switches, Multiplexers, Decoders Feature Summary

• Combines a 3-to-8 line decoder with address latching for strobed applications
• Incorporates dual output enables to simplify cascading configurations
• Provides glitch-free decoding capabilities in bus-oriented systems

Signal Switches, Multiplexers, Decoders Applications

• Strobed address decoding in bus-oriented systems
• Glitch-free decoder implementation
• Cascaded decoder/demultiplexer designs

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'N' confirms the standard plastic 16-pin DIP package type. Confirm that the active production status aligns with long-term availability requirements. Ensure the RoHS compliance status meets environmental regulations for the target assembly process. Validate that the commercial temperature range of 0°C to 70°C is sufficient for the intended operating environment.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a combined decoder and address latch is required to prevent glitches during address changes. The dual output enable pins allow for flexible system integration and simplified cascading compared to single-enable alternatives. Verify that the ALS logic family speed and power consumption characteristics fit the overall system design constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74ALS137A series, which includes variants like the SN74AS137. While the SN74AS137 offers faster switching speeds, the SN74ALS137A provides a balance of performance and power dissipation typical of the ALS family. The 'AN' suffix specifically denotes the through-hole PDIP package option available for this logic function.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74ALS137AD (SOIC Package)