M74HC237B1R

Overview

The M74HC237B1R is a high-speed CMOS 3-to-8 line decoder latch fabricated with silicon gate C2MOS technology. It features three address inputs (A, B, C) and eight outputs (Y0 to Y7). The device includes a latch enable input (GL) to store the address and two data enable inputs (G1 active high, G2 active low) to control output states independently of the select or latch-enable inputs. All outputs are low unless G1 is high and G2 is low. It operates within a wide voltage range of 2V to 6V.

Feature Summary

• Features a latch enable input to store address data at select inputs when transitioning from low to high.
• Includes independent data enable controls for managing output states regardless of select or latch conditions.
• Designed for glitch-free decoding in stored-address applications within bus-oriented systems.

Applications

• Glitch-free decoders in stored-address applications
• Bus-oriented system implementations

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors. Confirm package type matches requirements as DIP, SOP, and TSSOP variants exist. Check datasheet for absolute maximum ratings to ensure operational limits are not exceeded during integration.

Selection Notes

Select this component for designs requiring stable address latching and independent output enablement. Ensure supply voltage remains between 2V and 6V. Verify that the required propagation delay characteristics align with system timing constraints under specific load conditions.

Part Context

This part belongs to the M74HCxxx series of high-speed CMOS logic functions. It is pin and function compatible with the standard 74 series 237 devices. The series utilizes silicon gate C2MOS technology to achieve high speed while maintaining low power consumption.

Replacement Considerations

Compatible replacements include other 3-to-8 line decoder latches from the 74HC237 family. Verify pinout compatibility and electrical specifications before substitution.