Texas Instruments SNJ5416J

Overview

SNJ5416J from Texas Instruments is a military-grade hex inverter buffer/driver with open-collector high-voltage outputs, designed for level-shifting TTL logic to MOS circuits and driving high-current loads such as relays and indicator lamps. It features 15 V minimum output breakdown voltage, 30 mA maximum sink current, and operates across –55°C to 125°C. Its six independent inverting channels support robust industrial and defense system interfacing.

For engineers reviewing the SNJ5416J datasheet, SNJ5416J pinout, SNJ5416J application, or SNJ5416J equivalent, this device is selected for high-voltage open-collector interface tasks requiring MIL-PRF-38535 qualification, wide temperature operation, and compatibility with legacy TTL input logic levels.

Technical Context

The SNJ5416J implements six identical inverting buffer stages, each with an open-collector NPN output transistor enabling external pull-up to voltages up to 15 V. Input clamping diodes provide transient protection and simplify system design by eliminating need for external input protection networks.

It uses standard TTL-compatible input thresholds (V_IL = 0.8 V max, V_IH = 2 V min) and delivers guaranteed low-level output voltage (V_OL = 0.4 V at I_OL = 16 mA) under military temperature and supply conditions (V_CC = 4.75–5.25 V).

Key Specifications

Pinout & Package

SNJ5416J is housed in a hermetically sealed ceramic dual in-line package (CDIP-J), 14-pin, 0.3-inch width, with 0.100-inch lead pitch and 5.08 mm max height. The package meets MIL-STD-1835 GDIP1-T14 and is qualified for high-reliability military use.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter buffer applications.

Compared with SNJ5406J, SNJ5416J trades 15 V lower output voltage headroom for tighter voltage compliance in 12 V systems; compared with SN7416N, it adds full MIL-PRF-38535 qualification, extended temperature range, and hermetic CDIP packaging - essential for defense and aerospace deployments.

Availability

SNJ5416J is available at Aetrix Electronics and suitable for industrial control panels, aerospace avionics interfaces, defense communications racks, and test equipment signal conditioning requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for SNJ5416J 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and high-reliability logic solutions for industrial, automotive, and defense markets.

The SNJ54xx series belongs to TI's military logic family, engineered specifically for high-reliability applications demanding extended temperature operation, hermetic packaging, and compliance with MIL-PRF-38535 requirements.

FAQ

What is the maximum output voltage the SNJ5416J can safely switch?

The SNJ5416J has a minimum output breakdown voltage of 15 V, meaning it can safely sink current while its output is pulled up to voltages up to 15 V. Exceeding this may cause permanent damage. This rating is verified per absolute maximum ratings in the SDLS031A datasheet and applies across the full –55°C to 125°C operating range. The SNJ5416J is not rated for 30 V operation - that specification applies only to the SNJ5406J variant.

Does the SNJ5416J require external pull-up resistors on its outputs?

Yes, the SNJ5416J features open-collector outputs and requires external pull-up resistors to define the high logic state voltage level. The value depends on load current and desired rise time; typical values range from 1 kΩ to 10 kΩ when interfacing with 12 V relays or indicator lamps. Without pull-ups, outputs remain floating in the high state and cannot drive logic-high signals reliably. This behavior is inherent to the SNJ5416J architecture.

Is the SNJ5416J pin-compatible with the SN7416N?

Yes, the SNJ5416J and SN7416N share identical pinout, logic function, and electrical interface characteristics - both are 14-pin hex inverters with open-collector outputs and TTL-compatible inputs. However, SNJ5416J uses a ceramic DIP (CDIP-J) package qualified to MIL-PRF-38535, while SN7416N uses a plastic DIP (PDIP-N) for commercial use. Physical interchangeability is possible, but functional equivalence requires matching environmental and reliability requirements.

What is the purpose of the input clamping diodes in the SNJ5416J?

The input clamping diodes in the SNJ5416J protect against negative-going voltage transients at the input pins by shunting excess current to GND. They simplify system design by eliminating the need for external Schottky clamps in noisy environments such as industrial control cabinets or avionics bays. These diodes are integral to the SNJ5416J silicon design and operate within the absolute maximum rating of –1.5 V input voltage (VIK), as specified in the SDLS031A datasheet.

Can the SNJ5416J drive multiple parallel loads from a single output?

Yes, a single SNJ5416J output can drive multiple parallel loads - such as several LEDs or small-signal relays - provided the total sink current does not exceed 30 mA and the combined load capacitance remains within timing constraints. Propagation delay increases with capacitive loading; for example, t_PHL rises from 15 ns (CL = 15 pF) to higher values at >50 pF. Always verify voltage drop (V_OL ≤ 0.4 V at I_OL = 16 mA) and timing margins in the final SNJ5416J application circuit.