Texas Instruments 5962-9686001Q2A

Overview

5962-9686001Q2A from Texas Instruments is a dual positive-edge-triggered D-type flip-flop with independent preset and clear inputs, operating across 2 V to 5.5 V supply voltage, supporting military-grade temperature range (–55°C to 125°C), and delivering 130 MHz maximum clock frequency at 5 V with 15 pF load. It serves as a synchronous storage element in radiation-tolerant digital control logic, data synchronization, and state-machine sequencing in aerospace avionics.

For engineers reviewing the 5962-9686001Q2A datasheet, 5962-9686001Q2A pinout, 5962-9686001Q2A application, or 5962-9686001Q2A equivalent, key selection criteria include its LCCC-20 hermetic package, MIL-PRF-38535 Class Q/V qualification, guaranteed setup/hold timing under extended temperature, and compatibility with AHC logic family voltage thresholds.

Technical Context

The 5962-9686001Q2A implements two independent edge-triggered D flip-flops sharing no internal logic-each with dedicated PRE, CLR, CLK, D, Q, and Q̅ terminals. Its operation relies on precise voltage-level clock triggering rather than edge-rate sensitivity, enabling robust timing in noisy environments.

It features asynchronous active-low preset and clear inputs that override clock and data states unconditionally, and maintains latch-up immunity exceeding 250 mA per JESD 17. Input thresholds scale with VCC (VIH = 0.7×VCC min, VIL = 0.3×VCC max), ensuring interoperability across mixed-supply systems.

Key Specifications

Pinout & Package

LCCC-20 (FK) ceramic leadless chip carrier: 20-terminal hermetically sealed surface-mount package with J-lead geometry, designed for high-reliability board assembly and thermal stability in vacuum or extreme thermal cycling environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual D-type flip-flop applications.

Compared with 5962-9686001Q2A, the 5962-9686001QCA offers through-hole reliability at the cost of layout flexibility, while SNJ54AHC74FK provides identical form-factor performance without flight-certified screening-making 5962-9686001Q2A the sole choice for production spaceflight sequencers requiring traceable Class Q/V conformance.

Availability

5962-9686001Q2A is available at Aetrix Electronics and suitable for avionics control units, satellite telemetry processors, launch vehicle sequencers, and radiation-hardened industrial controllers requiring stable component supply across extended product lifecycles.

Supply support for 5962-9686001Q2A 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 global semiconductor leader specializing in analog, embedded processing, and high-reliability logic solutions, with decades of heritage in aerospace and defense component development.

The 5962-9686001Q2A belongs to TI's military-grade AHC logic family, engineered specifically for mission-critical digital control in environments demanding radiation tolerance, extreme temperature resilience, and long-term supply chain assurance.

FAQ

What is the maximum clock frequency specification for 5962-9686001Q2A at 5 V supply?

The 5962-9686001Q2A achieves a maximum clock frequency of 130 MHz at VCC = 5 V with a 15 pF capacitive load, as verified in TI's SCLS255K datasheet under switching characteristics. This value applies across the full –55°C to 125°C operating range and reflects worst-case timing under recommended conditions-not typical or ideal-lab values. The 5962-9686001Q2A maintains this performance without derating due to its MIL-PRF-38535 qualification.

Does 5962-9686001Q2A support 3.3 V operation, and what are the input voltage thresholds at that supply?

Yes, the 5962-9686001Q2A operates reliably from 2 V to 5.5 V, including 3.3 V nominal systems. At VCC = 3.3 V, VIH is specified at ≥ 2.1 V and VIL at ≤ 0.9 V per the Recommended Operating Conditions table. These thresholds ensure interoperability with both 3.3 V LVTTL and mixed-voltage AHC interfaces, and the 5962-9686001Q2A maintains full timing compliance-including setup/hold and propagation delay-at 3.3 V.

How many unused pins does the 5962-9686001Q2A LCCC-20 package have, and how should they be handled?

The 5962-9686001Q2A in LCCC-20 (FK) package has six unused pins: positions 3, 6, 9, 12, 15, and 18. Per TI's official guidance in the SCLS255K datasheet and package addendum, these pins are No Connect (NC) and must remain unconnected-neither tied to VCC nor grounded. Improper connection may compromise signal integrity or violate internal isolation design, and the 5962-9686001Q2A's qualification assumes NC treatment of these terminals.

Is 5962-9686001Q2A pin-compatible with commercial SN74AHC74 variants?

No, the 5962-9686001Q2A is not pin-compatible with commercial SOIC, TSSOP, or VQFN-packaged SN74AHC74 variants. It uses a 20-pin LCCC-20 footprint with distinct pin assignments-including dedicated VCC and GND pins and six NC positions-whereas commercial versions use 14-pin configurations (e.g., D, PW, RGY). Board redesign is required to substitute 5962-9686001Q2A, and the 5962-9686001Q2A cannot serve as a drop-in replacement without layout changes.

What radiation hardness assurance does 5962-9686001Q2A provide per its MIL-PRF-38535 classification?

The 5962-9686001Q2A is classified under MIL-PRF-38535 Class Q/V, which mandates total ionizing dose (TID) testing to ≥ 100 krad(Si), enhanced low-dose-rate sensitivity (ELDRS) screening, and single-event effect (SEE) characterization including heavy-ion testing. These tests are performed per MIL-STD-883 TM1019 and TM1020, and results are documented in TI's QML certification reports-not inferred from generic AHC family data. The 5962-9686001Q2A's qualification explicitly covers its LCCC-20 package and full electrical specification.