74HC237PWJ

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74HC237PWJ is a 3-to-8 line decoder and demultiplexer featuring address latches, manufactured in a TSSOP16 package (SOT403-1). It operates on a single supply voltage ranging from 2.0 V to 6.0 V. The device decodes three binary weighted address inputs to eight mutually exclusive active HIGH outputs. Key electrical parameters include a propagation delay of up to 48 ns at 6.0 V, an operating temperature range of -40 °C to +125 °C, and ESD protection exceeding 2000 V (HBM) and 1000 V (CDM).

Signal Switches, Multiplexers, Decoders Feature Summary

• Integrates a 3-to-8 decoder with a 3-bit storage latch for stored address applications.
• Features multiple input enables allowing easy expansion or independent control.
• Provides active HIGH mutually exclusive outputs suitable for non-overlapping decoding.

Signal Switches, Multiplexers, Decoders Applications

• Implementing non-overlapping decoders in 3-state systems.
• Storing addresses in bus-oriented systems.
• Expanding decoder capabilities to larger line counts via parallel connection.

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'J' against official Nexperia documentation to confirm packaging details such as reel specifications or tape dimensions. Ensure the ordered component matches the TSSOP16 form factor and that the manufacturer source aligns with the provided datasheet revision. Confirm RoHS compliance status through the manufacturer's current product change notifications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when address latching functionality is required within a decoder circuit. The wide supply voltage range supports various logic families. Verify that the output drive requirements and noise immunity levels meet the system design constraints. Consider the thermal derating characteristics if operating near maximum power dissipation limits.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices. It serves as a specialized variant of standard decoders by incorporating internal latches at the address inputs. This integration reduces external component count in designs requiring stable address selection during data transfer operations.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74HC237D is a documented alternative in the SO16 package. Verify pin compatibility and package dimensions before substitution. Ensure the replacement part meets the same electrical specifications and environmental ratings required by the application.

Signal Switches, Multiplexers, Decoders FAQ

How does the latch enable input affect the decoder outputs?

When the latch enable (LE) is LOW, the decoder responds directly to address inputs. When LE transitions HIGH, the last address state is stored, and subsequent address changes are ignored until LE goes LOW again.

What is the function of the enable inputs E1 and E2?

E1 (active LOW) and E2 (active HIGH) control the output state independently of the address inputs. All outputs remain HIGH unless E1 is LOW and E2 is HIGH.