Texas Instruments 5962-9861601QFA

Overview

5962-9861601QFA from Texas Instruments is a dual retriggerable monostable multivibrator in CFP (W) package, operating over –55°C to 125°C, with TTL-compatible inputs, Schmitt-trigger A/B/CLR inputs for jitter-free triggering, and external RC-programmable pulse duration up to milliseconds. It serves in military-grade timing control circuits requiring precise, extendable output pulses under harsh environmental conditions.

For engineers reviewing the 5962-9861601QFA datasheet, 5962-9861601QFA pinout, 5962-9861601QFA application, or 5962-9861601QFA equivalent, key selection criteria include its MIL-PRF-38535 qualification, ±0.5% unit-to-unit pulse-duration consistency with fixed RC components, latch-up immunity >100 mA per JESD 78 Class II, and compatibility with 4.5 V–5.5 V supply rails in high-reliability embedded timing systems.

Technical Context

The 5962-9861601QFA implements two independent edge-triggered monostable circuits, each accepting active-high or active-low gated logic inputs via Schmitt-triggered A, B, and CLR terminals. Pulse initiation occurs on rising or falling edges at A or B while CLR remains high; retriggering extends the output pulse without resetting the timer.

Pulse width is externally set by R_ext (1 kΩ minimum) and C_ext, with tw ≈ K·R_ext·C_ext (K = 1.0 for C_ext ≥ 1000 pF). CLR overrides all triggers and forces Q low/Q high immediately, enabling deterministic pulse termination independent of timing component values.

Key Specifications

Pinout & Package

5962-9861601QFA uses a 16-pin Ceramic Flatpack (CFP-W) package with hermetic sealing and lead finish specified as "Call TI" per TI's packaging addendum. Pin numbering follows standard CFP top-view orientation with Pin 1 identified by index mark.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual retriggerable monostable multivibrator applications.

Compared with 5962-9861601QFA, SNJ54AHCT123AW is functionally identical and interchangeable, whereas 5962-9861601QEA offers the same military qualification in a through-hole package-enabling design flexibility across assembly methods without compromising timing performance or environmental ruggedness.

Availability

5962-9861601QFA is available at Aetrix Electronics and suitable for avionics timing control, military radar pulse shaping, spacecraft power sequencing, and nuclear instrumentation timing requiring stable component supply under extended temperature and radiation-hardened conditions.

Supply support for 5962-9861601QFA 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 ICs, with decades of heritage in military and aerospace component development.

The SN54AHCT123A product line delivers radiation-tolerant, temperature-stable monostable timing functions for mission-critical systems where deterministic pulse generation cannot rely on software or programmable logic.

FAQ

What is the qualified temperature range for 5962-9861601QFA?

The 5962-9861601QFA is fully qualified for operation from –55°C to 125°C per MIL-PRF-38535 requirements. This range is validated across all electrical parameters including propagation delay, output drive strength, and pulse-width stability-making 5962-9861601QFA suitable for deployment in jet engine control units, satellite power systems, and ground-based radar shelters.

Does 5962-9861601QFA require external pull-up or pull-down resistors on unused inputs?

Yes, per TI's recommended operating conditions, all unused inputs of 5962-9861601QFA must be held at VCC or GND to prevent floating states that could cause excessive ICC or erratic triggering. This requirement applies to unused A, B, and CLR inputs on both multivibrator sections, and is critical to maintaining latch-up immunity and predictable power-up behavior in 5962-9861601QFA systems.

Can the output pulse duration of 5962-9861601QFA be adjusted dynamically during operation?

Yes-the 5962-9861601QFA supports dynamic pulse adjustment via its retriggerable architecture: applying a new trigger to A or B while the output is active extends the pulse width by tw, and asserting CLR terminates it immediately. This enables real-time adaptation in applications like variable-pulse laser drivers or responsive fault-clearing circuits without changing external RC components.

Is 5962-9861601QFA compliant with RoHS or other environmental directives?

5962-9861601QFA is not classified as RoHS-compliant per TI's packaging addendum-it carries "TBD" for Eco Plan and "Call TI" for lead/ball finish, reflecting its status as a legacy military-spec part with non-RoHS materials (e.g., leaded solder seals in the CFP-W package). Its qualification path follows MIL-PRF-38535, not commercial environmental standards.

How does the Schmitt-trigger input circuitry in 5962-9861601QFA improve noise immunity?

The Schmitt-trigger inputs on A, B, and CLR of 5962-9861601QFA provide hysteresis-typically >0.5 V-so slow-rising or noisy signals cross the threshold only once per transition. This eliminates multiple output toggles from a single input edge, ensuring clean, jitter-free triggering in electrically noisy environments such as aircraft power busses or radar transmitter compartments where 5962-9861601QFA is commonly deployed.