Texas Instruments 5962-8780901RA

Overview

5962-8780901RA from Texas Instruments is a military-grade octal bus transceiver with inverting logic, designed for bidirectional data flow between A and B buses under DIR control and 3-state isolation via OE. It operates from 2 V to 6 V, delivers ±6-mA output drive at 5 V, achieves typical propagation delay of 8 ns, and draws ≤80 µA ICC - enabling robust interface bridging in avionics and ruggedized embedded systems.

For engineers reviewing the 5962-8780901RA datasheet, 5962-8780901RA pinout, 5962-8780901RA application, or 5962-8780901RA equivalent, key selection criteria include its −55°C to +125°C operating range, CDIP-J package with 20 pins, high-current 3-state outputs capable of driving up to 15 LSTTL loads, and compatibility with HC logic families in radiation-tolerant or mission-critical bus architectures.

Technical Context

The 5962-8780901RA implements dual-function asynchronous bus transceivers: each of eight channels routes data either A→B or B→A depending on the DIR input level, while OE independently enables or disables all outputs into high-impedance state. Its CMOS design ensures low static power consumption and rail-to-rail voltage translation across the full 2–6 V supply range.

Input thresholds are specified relative to VCC (VIH = 70% VCC min, VIL = 30% VCC max), and output drive strength is guaranteed at ±6 mA (IOH/IOL) under 4.5 V and ±7.8 mA under 6 V conditions. The device meets MIL-PRF-38535 Class V requirements and supports operation with CL = 50 pF or 150 pF loads, with tpd ranging from 8 ns (6 V) to 32 ns (2 V).

Key Specifications

Pinout & Package

5962-8780901RA is housed in a hermetically sealed Ceramic Dual In-line Package (CDIP-J), 20-pin, 0.3-inch wide body with standard JEDEC MS-001 dimensions and through-hole mounting.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal bus transceiver applications.

Compared with 5962-8780901RA, SNJ54HC640J offers identical performance and screening but differs only in documentation traceability, whereas 5962-8780901RX omits radiation hardness assurance and life-test validation - making 5962-8780901RA the sole option for deployed aerospace systems requiring certified reliability.

Availability

5962-8780901RA is available at Aetrix Electronics and suitable for avionics data bus interface, tactical vehicle control system, and secure communications crypto module applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 5962-8780901RA 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 company specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and defense markets.

The 5962-8780901RA belongs to TI's military-grade HC logic family, engineered specifically for high-integrity digital interfacing in mission-critical platforms where extended temperature operation, radiation tolerance, and QML certification are mandatory.

FAQ

What is the absolute maximum supply voltage rating for the 5962-8780901RA?

The 5962-8780901RA has an absolute maximum supply voltage (VCC) rating of −0.5 V to +7 V, as specified in the Absolute Maximum Ratings table. Operation beyond this range risks permanent damage. For reliable functionality, the device must be operated within the recommended 2 V to 6 V range per the Recommended Operating Conditions section of the datasheet. This margin allows transient suppression design but does not imply safe continuous operation above 6 V.

Does the 5962-8780901RA support non-inverting data transfer?

No, the 5962-8780901RA implements fixed inverting logic - each channel inverts the signal during active transfer, regardless of DIR or OE state. This behavior is inherent to the SN54HC640 architecture and confirmed in the Logic Diagram and Function Table. If non-inverting operation is required, the 5962-8780901RA cannot be substituted without external inversion or redesign; alternative devices such as SN54HC245 would be necessary.

What is the thermal resistance (θJA) of the 5962-8780901RA in its CDIP-J package?

The 5962-8780901RA in the CDIP-J package does not have a published θJA value in the provided datasheet. Unlike plastic packages (e.g., N, DW, PW), the ceramic J package's thermal impedance is not listed in the Absolute Maximum Ratings table. Thermal design must rely on board-level conduction paths and ambient derating per MIL-STD-883 test condition 1010.2, as no JEDEC-standard θJA is defined for this hermetic package.

Can the 5962-8780901RA drive 50-pF loads at 6 V with guaranteed timing?

Yes - the 5962-8780901RA guarantees tpd = 8 ns (typical) and tpd ≤ 27 ns (max) when driving a 50-pF load at VCC = 6 V and TA = 25°C, as documented in the Switching Characteristics table. These values are validated under controlled test conditions (Figure 1 load circuit) and apply across the full −55°C to +125°C operating range with appropriate derating per MIL-PRF-38535.

Is the 5962-8780901RA pin-compatible with commercial SN74HC640 variants?

Yes, the 5962-8780901RA shares identical pinout and electrical interface with SN74HC640N, SN74HC640DW, and other SN74HC640 variants in 20-pin packages - including A1–A8, B1–B8, DIR, OE, VCC, and GND assignments. However, mechanical compatibility is limited to CDIP-J sockets; PCB footprints for SOIC-DW or TSSOP-PW packages are not interchangeable due to differing land patterns and mounting methods.