SNJ54AHC123AW

Overview

The SNJ54AHC123AW is a dual retriggerable monostable multivibrator from the AHC logic family, designed for operation within a 2V to 5.5V supply voltage range. It features Schmitt-trigger circuitry on the A, B, and CLR inputs to accommodate slow input transition rates without jitter. The device provides edge triggering from active-high or active-low gated logic inputs and allows pulse duration extension via retriggering. An overriding clear function terminates output pulses early. The component includes glitch-free power-up reset capabilities and robust latch-up performance exceeding 100mA per JESD 78, class II standards.

Feature Summary

• Dual retriggerable monostable multivibrators with Schmitt-trigger inputs
• Edge triggered from active-high or active-low gated logic inputs
• Glitch-free power-up reset on outputs
• Latch-up performance exceeds 100mA per JESD 78, class II

Applications

• Timing generation circuits requiring precise pulse control
• Debouncing switches or mechanical contacts
• Pulse width modulation applications
• Frequency division circuits

Procurement Notes

Verify the specific ordering suffix 'W' corresponds to the CFP-16 package configuration as documented in the Packaging Information addendum. Confirm that the military-grade SNJ prefix aligns with the required environmental specifications for the -55°C to 125°C operating temperature range. Ensure compatibility with existing system interfaces before finalizing procurement orders.

Selection Notes

Select this component when dual independent monostable circuits are required within a single package. The AHC series offers high-speed performance suitable for modern digital systems while maintaining CMOS low-power characteristics. Verify that external timing components meet the recommended resistance and capacitance values for the desired pulse duration. Consider the CFP-16 package constraints regarding board space and thermal management during layout.

Part Context

This part belongs to the SNx4AHC123A family of dual retriggerable monostable multivibrators manufactured by Texas Instruments. The 'SNJ' prefix indicates a military-grade qualification level, while the 'AHC' designation signifies advanced high-speed CMOS technology. The 'W' suffix specifically identifies the ceramic flatpack (CFP) package variant, distinguishing it from plastic packages like SOIC or SSOP found in commercial grade counterparts.

Replacement Considerations

Public confirmed substitute part numbers include SNJ54AHC123AJ and SNJ54AHC123AFK.