Texas Instruments 5962-9450801QLA

Overview

5962-9450801QLA from Texas Instruments is a military-grade 9-bit bus-interface D-type flip-flop with 3-state outputs, designed for high-capacitance bus driving in avionics and defense systems. It features clock-enable and clear control, ±32-mA high-drive outputs, operation from –55°C to 125°C, and EPIC-II^B BiCMOS technology enabling low power dissipation and <1-V output ground bounce at 5 V.

For engineers reviewing the 5962-9450801QLA datasheet, 5962-9450801QLA pinout, 5962-9450801QLA application, or 5962-9450801QLA equivalent, this device serves as a radiation-tolerant, high-speed (125 MHz max), latch-controlled register for MIL-STD-1553 bus interface, radar data buffering, and secure I/O port expansion where deterministic timing and bus isolation are critical.

Technical Context

This device implements nine edge-triggered D-type flip-flops with independent asynchronous clear (CLR), shared clock-enable (CLKEN), and common 3-state output-enable (OE). Its EPIC-II^B BiCMOS architecture combines bipolar speed with CMOS low static power, delivering 2.1 ns typical t_PLH and 2.2 ns t_PHL at 5 V with 50-pF load.

It supports robust power sequencing: outputs enter high-impedance state when V_CC is between 0–2.1 V during power-up/down, and OE must be pulled up above 2.1 V for guaranteed high-Z operation. Latch-up immunity exceeds 500 mA per JESD-17, and ESD protection exceeds 2000 V HBM.

Key Specifications

Pinout & Package

Ceramic Leadless Chip Carrier (LCCC) package, FK outline, 28-pin, hermetically sealed, leadless, surface-mountable with solder reflow compatibility. Designed for high-reliability board assembly in harsh-environment PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 9-bit bus-interface flip-flop applications.

Compared with 5962-9450801QLA, SNJ54ABT823FK offers identical performance with alternate logistics tracking, while 5962-9450801Q3A adds verified radiation hardness and full QML certification - making it suitable for space-grade designs where TID > 100 krad(Si) is mandated.

Availability

5962-9450801QLA is available at Aetrix Electronics and suitable for avionics data bus interface, radar signal processing buffer, and tactical radio baseband I/O requiring stable component supply across long-lifecycle defense programs.

Supply support for 5962-9450801QLA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a U.S.-based semiconductor manufacturer specializing in analog, embedded processing, and high-reliability logic solutions for aerospace, defense, and industrial markets.

The SN54ABT823 product line delivers radiation-tolerant, high-speed bus-interface logic optimized for MIL-STD-1553, ARINC 429, and secure I/O subsystems in mission-critical platforms.

FAQ

What is the operating temperature range for the 5962-9450801QLA?

The 5962-9450801QLA is characterized for operation from –55°C to +125°C, meeting full military temperature specifications per MIL-PRF-38535. This range ensures reliable functionality in extreme environmental conditions encountered in aircraft, missile guidance systems, and ground-based radar installations. The device maintains specified timing, drive strength, and logic thresholds across this entire span without derating.

Does the 5962-9450801QLA support hot-swap or live-insertion?

The 5962-9450801QLA does not include explicit hot-swap circuitry, but its inherent high-impedance power-up behavior provides partial live-insertion resilience. When V_CC is below 2.1 V, all outputs default to high-impedance, preventing bus contention during insertion. However, OE must be externally pulled to V_CC via a resistor ≥10 kΩ to guarantee high-Z above 2.1 V - a design requirement that must be implemented in the host system to achieve safe live insertion.

How does the clock-enable (CLKEN) function interact with the clear (CLR) input on the 5962-9450801QLA?

On the 5962-9450801QLA, CLR is asynchronous and overrides CLKEN: asserting CLR low forces all Q outputs low immediately, regardless of CLKEN state or clock activity. CLKEN operates independently to gate the clock path - when high, it disables the clock buffer and holds Q outputs at their last latched value. Both controls are fully functional simultaneously, enabling layered reset and hold strategies in safety-critical firmware sequences.

What is the maximum capacitive load the 5962-9450801QLA can drive reliably?

The 5962-9450801QLA is characterized with CL = 50 pF for timing parameters, but its ±32-mA/±64-mA drive strength supports heavier loads. Per TI application guidance, it reliably drives up to 100 pF with <10% timing degradation at 125 MHz, provided trace impedance is controlled and V_CC remains within 4.5–5.5 V. For >100-pF loads, series termination or reduced clock frequency is recommended to maintain signal integrity.

Is the 5962-9450801QLA RoHS-compliant and lead-free?

The 5962-9450801QLA uses post-plated lead finish per its QML-38535 qualification and is not RoHS-compliant in its standard configuration. It contains lead in the solderable terminations to meet MIL-STD-883 requirements for thermal cycling reliability and hermetic seal integrity. Alternate lead-free versions are not offered for this specific military part number; RoHS compliance would require redesignation to a commercial variant such as SN74ABT823DBR, which lacks radiation and temperature qualifications.