Texas Instruments 5962-9959101Q2A

Overview

5962-9959101Q2A from Texas Instruments is a triple-voltage supervisory IC for military-grade DSP and processor-based systems, monitoring 3.3 V, 1.8 V, and adjustable supply rails with fixed 200 ms power-on reset delay, 40 µA supply current, and operation from −55°C to 125°C in LCCC-20 package.

For engineers reviewing the 5962-9959101Q2A datasheet, 5962-9959101Q2A pinout, 5962-9959101Q2A application, or 5962-9959101Q2A equivalent, this device serves as a qualified MIL-PRF-38535 Class Q voltage supervisor with dual active-high/active-low RESET outputs, manual reset input, and temperature-compensated 1.25 V reference for high-reliability embedded control and signal processing platforms.

Technical Context

The 5962-9959101Q2A implements three independent comparator channels with hysteresis (2–60 mV), each tied to a precision voltage reference, enabling simultaneous monitoring of 3.3 V (2.93 V threshold), 1.8 V (1.68 V threshold), and user-defined voltages ≥1.25 V via external resistor divider on SENSE3. Its internal timer initiates a 200 ms (typ) delay after all SENSE inputs exceed their thresholds before deasserting RESET.

It features dual RESET outputs (active-low and active-high), a manual reset input (MR) that forces RESET assertion when low, and operates across 2 V to 6 V supply range with defined RESET behavior down to VDD ≥1.1 V. The device meets MIL-STD-883 Class B ESD requirements (>2000 V HBM, >200 V MM) and is qualified per JAN/ESC specifications for space and defense applications.

Key Specifications

Pinout & Package

LCCC-20 (FK) ceramic package with hermetic seal, 20-terminal leadless chip carrier, suitable for high-reliability board assembly and conformal coating. Pin 1 identified by notch or dot marking per MIL-STD-1835.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-supply supervisory applications.

Compared with 5962-9959101Q2A, TPS3307-18MFKB offers identical functionality at lower cost but without military screening, while 5962-9959101QPA trades SENSE3 adjustability and surface-mount compatibility for through-hole robustness and reduced footprint - selection depends on qualification, packaging, and rail-count requirements.

Availability

5962-9959101Q2A is available at Aetrix Electronics and suitable for military signal processing systems, avionics power management, spacecraft onboard computers, and tactical radio transceivers requiring stable component supply under extended temperature and radiation-hardened conditions.

Supply support for 5962-9959101Q2A 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 components for industrial, automotive, aerospace, and defense markets.

The TPS3307 family was designed specifically for triple-rail supervision in mission-critical DSP and microprocessor systems, emphasizing low power, wide temperature operation, and MIL-qualified reliability - with 5962-9959101Q2A representing its highest-screened variant.

FAQ

What is the primary function of the 5962-9959101Q2A in a processor-based system?

The 5962-9959101Q2A functions as a triple-voltage supervisory circuit that monitors three independent supply rails (3.3 V, 1.8 V, and an adjustable rail), asserts RESET during power-up or undervoltage events, and holds RESET for a fixed 200 ms delay to ensure reliable initialization of processors like the SMJ320C6201B. Its dual RESET outputs and manual reset input enable flexible integration into hardened control architectures where deterministic reset sequencing is mandatory.

Does the 5962-9959101Q2A require external components to set its reset delay time?

No, the 5962-9959101Q2A does not require external components to set its power-on reset delay time. It incorporates an internal timer that guarantees a fixed 200 ms (typical) delay after all SENSE inputs exceed their respective thresholds before releasing RESET. This eliminates the need for timing capacitors or resistors, reducing component count and improving timing consistency across temperature and unit-to-unit variation.

Can the 5962-9959101Q2A monitor a 2.5 V supply rail?

Yes, the 5962-9959101Q2A can monitor a 2.5 V supply rail using the SENSE3 input, which is adjustable via an external resistor divider. Since the internal reference is 1.25 V, a 2.5 V rail is sensed by configuring the divider to produce 1.25 V at SENSE3 when the rail is at nominal voltage - enabling accurate supervision of any supply ≥1.25 V without modifying the 5962-9959101Q2A itself.

What is the significance of the LCCC-20 package for the 5962-9959101Q2A?

The LCCC-20 (FK) package provides hermetic ceramic sealing, zero lead inductance, and superior thermal/mechanical stability - essential for military and aerospace applications subject to extreme shock, vibration, and thermal cycling. Its 20-pin layout accommodates all three SENSE inputs, dual RESET outputs, MR, VDD, and GND while supporting MIL-STD-1835 compliance and compatibility with automated die-attach and wire-bond processes in high-reliability assembly lines.

How does the 5962-9959101Q2A handle reset assertion during transient voltage dips?

The 5962-9959101Q2A asserts RESET whenever any SENSE input falls below its negative-going threshold (e.g., 2.86 V for SENSE1). With built-in hysteresis (3–60 mV depending on threshold), it prevents chatter during marginal dips and ensures RESET remains asserted until the rail recovers sufficiently above the threshold. Propagation delay from SENSE dip to RESET assertion is ≤5 µs, enabling rapid fault containment in real-time control loops.