Texas Instruments 5962-9761601QCA

Overview

5962-9761601QCA from Texas Instruments is a dual positive-edge-triggered D-type flip-flop with independent preset and clear inputs, designed for 2.7-V to 3.6-V operation in military-grade applications. It delivers 5.2 ns maximum propagation delay at 3.3 V, supports 100 MHz clock frequency, and features overvoltage-tolerant inputs (up to 5.5 V) for mixed-voltage interfacing in rugged timing control circuits.

For engineers reviewing the 5962-9761601QCA datasheet, 5962-9761601QCA pinout, 5962-9761601QCA application, or 5962-9761601QCA equivalent, this device serves as a radiation-hardened, temperature-stable building block for synchronous logic in avionics data handling, missile guidance sequencers, and secure communications baseband processing.

Technical Context

The 5962-9761601QCA implements two independent edge-triggered D flip-flops sharing no internal coupling-each with dedicated PRE, CLR, CLK, D, Q, and Q̅ terminals. Its TTL-compatible input thresholds and CMOS output drive enable direct interfacing with legacy 5-V logic while operating from a 2.7–3.6 V supply.

Triggering occurs at a defined voltage threshold on the rising edge of CLK, independent of slew rate. Setup (3.0 ns) and hold (1.0 ns) times are specified at 3.3 V, supporting high-speed sampling in deterministic control loops where metastability avoidance is critical.

Key Specifications

Pinout & Package

5962-9761601QCA uses a 14-pin Ceramic Dual-In-Line Package (CDIP-J), 19.56 mm × 6.67 mm body size, hermetically sealed for high-reliability deployment in vacuum or high-humidity military enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SNJ54LVC74AFK and 5962-9761601QDA, the 5962-9761601QCA offers optimal balance of mechanical serviceability (through-hole CDIP), thermal performance, and legacy design compatibility - making it the default choice for retrofitting existing MIL-STD-1553 terminal hardware.

Availability

5962-9761601QCA is available at Aetrix Electronics and suitable for avionics data acquisition, missile guidance sequencing, and secure communications baseband requiring stable component supply across extended product lifecycles and defense procurement cycles.

Supply support for 5962-9761601QCA 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 leader specializing in high-reliability analog and logic solutions for aerospace, defense, and industrial markets.

The SNx4LVC74A family was developed to deliver radiation-tolerant, temperature-stable dual D flip-flops meeting MIL-PRF-38535 Class V requirements for mission-critical digital control in extreme environments.

FAQ

What is the maximum clock frequency supported by the 5962-9761601QCA?

The 5962-9761601QCA supports a maximum clock frequency of 100 MHz at VCC = 3.3 V ± 0.3 V and TA = –55°C to +125°C. This rating is validated per MIL-PRF-38535 testing and applies across the full military temperature range, making it suitable for high-speed deterministic control in flight computers and radar processors where timing margins must be guaranteed under worst-case conditions. The 5962-9761601QCA achieves this using optimized CMOS gate design with sub-6 ns propagation delay.

Does the 5962-9761601QCA require external pull-up resistors on PRE and CLR pins?

No, the 5962-9761601QCA does not require external pull-up resistors on PRE or CLR pins. These inputs are internally biased and function as active-low asynchronous controls; they must be driven actively low to assert preset or clear, and held high (≥2.0 V at VCC = 3.3 V) to remain inactive. Leaving them unconnected risks floating states and undefined outputs - TI recommends tying unused PRE/CLR pins directly to VCC via short traces per SCBA004 guidelines. This behavior is confirmed in the 5962-9761601QCA functional table and input threshold specifications.

Can the 5962-9761601QCA interface directly with 5-V logic families?

Yes, the 5962-9761601QCA can interface directly with 5-V logic families because its inputs are overvoltage tolerant up to 5.5 V, even when operating from a 2.7–3.6 V supply. This allows direct connection to 5-V microcontrollers, FPGAs, or legacy bus drivers without level-shifting circuitry. However, outputs swing between 0 V and VCC (≤3.6 V), so driving 5-V TTL inputs may require external pull-ups or buffer stages. This capability is explicitly documented in the 5962-9761601QCA datasheet Section 3 and Recommended Operating Conditions Table 6.3.

What packaging and screening standards apply to the 5962-9761601QCA?

The 5962-9761601QCA is supplied in a 14-pin Ceramic Dual-In-Line Package (CDIP-J) and is fully screened to MIL-PRF-38535 Class V requirements, including temperature cycling, burn-in, hermeticity testing, and lot acceptance testing. It meets SMD 5962-97616 specification for QML Class V flow, ensuring suitability for spaceflight and airborne safety-critical applications. Package dimensions (19.56 mm × 6.67 mm) and marking "5962-9761601QCA" are verified in TI's Orderable Device Addendum dated 6-Feb-2020.

How does the 5962-9761601QCA handle metastability in asynchronous input conditions?

The 5962-9761601QCA does not include built-in metastability hardening; like all standard D flip-flops, it relies on external synchronizer chains when sampling asynchronous signals. Its specified setup (3.0 ns) and hold (1.0 ns) times at 3.3 V define minimum timing margins to avoid metastability-induced output glitches. For mission-critical use, TI recommends cascading two 5962-9761601QCA devices in series - feeding the first stage's Q to the second stage's D - to reduce mean time between failures (MTBF) to acceptable levels per MIL-HDBK-217F predictions. This approach is validated in TI Application Report SCBA004.