5962-8968101RA

Overview

The Texas Instruments 5962-8968101RA is a military-grade octal D-type edge-triggered flip-flop belonging to the SN54AHCT374 series. It features eight independent D-type latches with three-state outputs, designed for high-speed digital data storage and bus interfacing applications. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports TTL-compatible input logic levels. Packaged in a 20-pin ceramic dual in-line package (CDIP), it ensures robust performance across an extended industrial temperature range from -55°C to +125°C. Key electrical specifications include a propagation delay of 10.4 ns, with output drive capabilities of -8 mA at high level and 8 mA at low level.

Feature Summary

• Octal configuration providing eight independent edge-triggered D-type latches for parallel data handling
• Three-state outputs enabling direct connection to system buses without external buffers
• AHCT logic compatibility allowing direct interface with TTL-driven systems while maintaining CMOS noise immunity
• Military-grade construction utilizing hermetic ceramic packaging for reliability in harsh environments

Applications

• High-reliability military communication systems requiring robust data storage
• Aerospace instrumentation interfaces demanding wide temperature tolerance
• Industrial control systems utilizing bus-oriented data transfer architectures
• Defense electronics where radiation hardness and long-term stability are critical

Procurement Notes

This component is a Defense Logistics Agency (DLA) managed part identified by the federal stock number prefix 5962. Procurement typically involves authorized government contractors or specialized distributors holding valid ITAR/EAR compliance credentials. Buyers must verify the specific quality classification suffix, such as Q for qualified military grade, against their technical requirements. Supply availability may be restricted due to limited production runs associated with legacy military specifications. Ensure all ordering documentation explicitly references the full MIL-MANUFACTURER-CODE format to prevent substitution errors during acquisition.

Selection Notes

Engineers should select this part when system design requires octal latching with bus-compatible outputs in extreme environmental conditions. The AHCT series selection is appropriate for designs needing CMOS power efficiency alongside TTL input voltage thresholds. Verify that the CDIP-20 package fits the available footprint on the printed circuit board, as surface-mount alternatives exist for different form factors. Confirm that the 10.4 ns propagation delay meets the timing constraints of the target clock frequency. Consider thermal management strategies given the extended operating temperature range up to 125°C.

Part Context

The 5962-8968101RA is a militarized version of the commercial SN54AHCT374 octal flip-flop. The 5962 prefix indicates it has been screened and tested according to MIL-PRF-38534 or similar military standards. This specific variant offers enhanced reliability compared to standard commercial logic devices. It serves as a bridge between modern CMOS technology and legacy military hardware requirements. The part is often used in replacement scenarios for older analog or earlier generation digital military systems.

Replacement Considerations

Direct pin-for-pin replacements include other SN54AHCT374 variants with different qualification suffixes. Commercial equivalents like the SN54AHCT374M may function electrically but lack the required military screening and hermetic sealing. Always verify that any substitute maintains the same CDIP-20 package dimensions and lead configuration. Check for identical propagation delays and output current ratings to ensure signal integrity is preserved in the existing circuit design.