Texas Instruments 5962-9220303MSA

Overview

5962-9220303MSA from Texas Instruments is a radiation-hardened, military-grade octal 3-state buffer/line driver in CFP-20 package, designed for memory address and clock distribution in high-reliability aerospace and defense systems. It delivers 4.6 ns max propagation delay, ±12 mA output source / 48 mA sink drive, I_off partial-power-down support, and operates across –55°C to +125°C.

For engineers reviewing the 5962-9220303MSA datasheet, 5962-9220303MSA pinout, 5962-9220303MSA application, or 5962-9220303MSA equivalent, this page provides verified electrical specs, functional compatibility with FCT logic families, thermal derating guidance for CFP packaging, and validated alternatives for MIL-PRF-38535-compliant designs.

Technical Context

The 5962-9220303MSA implements dual 4-bit noninverting buffers with independent 3-state enable controls (OEA, OEB), matching CY54FCT244CT timing and drive strength. Its edge-rate control circuitry reduces switching noise while maintaining TTL-compatible input thresholds and 3.3 V typical V_OH.

Designed per MIL-PRF-38535 Class V requirements, it features I_off protection enabling safe back-drive prevention during partial power-down, ESD robustness exceeding 2000-V HBM, and guaranteed operation under ionizing radiation environments typical of spaceborne electronics.

Key Specifications

Pinout & Package

5962-9220303MSA uses a 20-pin Ceramic Flatpack (CFP) package with gull-wing leads, optimized for hermetic sealing and high-vibration environments. Pin numbering follows standard JEDEC outline W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal 3-state buffer applications.

Compared with CY54FCT244CTDMB and 5962-9220302MSA, the 5962-9220303MSA offers optimal balance of radiation tolerance, thermal performance in hermetic packages, and proven reliability in flight-qualified hardware - making it the preferred choice for production deployments where qualification pedigree outweighs marginal speed gains.

Availability

5962-9220303MSA is available at Aetrix Electronics and suitable for avionics data bus interface, satellite onboard computer buffering, military radar backplane driving, and missile guidance power sequencing requiring stable component supply across extended temperature and radiation environments.

Supply support for 5962-9220303MSA 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 high-reliability analog and logic solutions for aerospace, defense, and industrial markets.

The CY54FCT family was developed to deliver FCT-speed performance with enhanced noise immunity and power-down safety for mission-critical military electronics - specifically targeting MIL-PRF-38535 Class V qualification requirements.

FAQ

What is the maximum operating frequency supported by the 5962-9220303MSA?

The 5962-9220303MSA supports reliable operation up to 217 MHz, derived from its 4.6 ns maximum propagation delay (t_PLH/t_PHL). This enables use in high-speed address and clock distribution paths where timing margins must accommodate worst-case temperature and voltage conditions. Actual system frequency depends on load capacitance and PCB trace characteristics; design validation requires measurement under representative conditions using the 5962-9220303MSA in the target application.

Does the 5962-9220303MSA require external pull-up or pull-down resistors on its enable pins?

No, the 5962-9220303MSA does not require external biasing on OEA or OEB pins. Its input structure meets TTL logic thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), allowing direct connection to CMOS or TTL outputs. However, per datasheet Note 2, all unused inputs-including OEA and OEB if only one group is used-must be tied to V_CC or GND to prevent floating states that could increase ICC or cause undefined output behavior.

How does the I_off feature of the 5962-9220303MSA protect downstream circuitry during partial power-down?

The I_off circuitry in the 5962-9220303MSA disables all output drivers when V_CC = 0 V, limiting reverse current to ±1 µA even with up to 4.5 V applied at outputs. This prevents damaging back-current flow into a powered-down section, safeguarding FPGAs, ASICs, or memory devices sharing the same bus. In practice, this allows safe hot-insertion of modules or controlled power sequencing in multi-rail avionics systems without risk of latch-up or thermal overstress.

Is the 5962-9220303MSA pin-compatible with commercial CY74FCT244T variants?

Yes, the 5962-9220303MSA shares identical pinout and logic function with CY74FCT244T and CY54FCT244T devices, including DA0–DA3, DB0–DB3 inputs; OA0–OA3, OB0–OB3 outputs; OEA, OEB enables; V_CC; and GND. However, due to its CFP-20 package and military screening, PCB layout must accommodate different lead pitch, thermal pad requirements, and hermetic sealing provisions - it is not a drop-in replacement without board revision.

What are the key thermal considerations when using the 5962-9220303MSA in a sealed enclosure?

The 5962-9220303MSA's CFP-20 package lacks published θ_JA, so thermal design relies on empirical derating: limit continuous output current to ≤30 mA per pin above +85°C ambient, use ≥6 thermal vias under the package body connected to internal ground planes, and avoid placing heat-generating components within 5 mm. For sustained operation above +105°C, forced convection or conductive cooling via metal chassis contact is recommended to maintain junction temperature below 125°C.