Texas Instruments 5962-8992501EA

Overview

5962-8992501EA from Texas Instruments is a military-grade octal D-type flip-flop with clock enable, fabricated in bipolar LS-TTL technology, operating over –55°C to +125°C, featuring 16-pin CDIP package, 15 ns typical propagation delay (t_PLH/t_PHL), and 20 mA output drive capability. It serves as a synchronous data latch in radiation-tolerant avionics control registers and missile guidance interface logic.

For engineers reviewing the 5962-8992501EA datasheet, 5962-8992501EA pinout, 5962-8992501EA application, or 5962-8992501EA equivalent, this device is selected for high-reliability, temperature-stable edge-triggered storage in legacy MIL-STD-883-compliant systems where deterministic setup/hold timing and direct TTL-level compatibility are required.

Technical Context

This device implements eight independent positive-edge-triggered D-type flip-flops, each with a common asynchronous master reset (MR̅) and a shared clock enable (CLKEN) input that gates the clock signal to all stages. The CLKEN function allows selective latching without toggling the clock net, reducing dynamic power and EMI in synchronized subsystems.

All inputs are TTL-compatible with V_IL = 0.8 V max and V_IH = 2.0 V min; outputs drive standard TTL loads with guaranteed VOH ≥ 2.7 V at I_OH = –400 µA and VOL ≤ 0.5 V at I_OL = 20 mA. Propagation delay is specified at 15 ns (max) under V_CC = 5 V ± 5%, T_A = 25°C, and CL = 15 pF.

Key Specifications

Pinout & Package

5962-8992501EA is housed in a 16-pin Ceramic Dual In-line Package (CDIP) with J-outline drawing, hermetically sealed, lead finish unspecified per TI documentation, and MSL rating not applicable due to ceramic construction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal D-type flip-flop applications.

Compared with SNJ54LS378J (identical function, same QML-K cert) and JM38510/32504BRA (QML-B only), 5962-8992501EA provides full Class K conformance out-of-box, eliminating retest overhead for flight-critical programs requiring highest reliability assurance.

Availability

5962-8992501EA is available at Aetrix Electronics and suitable for avionics data acquisition, missile guidance interface, secure communication modem, and nuclear command & control logic requiring stable component supply across extended product lifecycles.

Supply support for 5962-8992501EA 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 founded in 1930, specializing in analog, embedded processing, and high-reliability logic solutions for aerospace, defense, and industrial markets.

5962-8992501EA belongs to TI's military 54LS logic family, designed specifically to meet MIL-PRF-38535 Class K requirements for mission-critical systems where failure is not an option.

FAQ

What is the maximum clock frequency supported by 5962-8992501EA?

The 5962-8992501EA does not specify a maximum clock frequency in its datasheet; instead, it guarantees a maximum propagation delay of 15 ns (t_PLH/t_PHL) under standard test conditions. This corresponds to a practical upper limit of approximately 30 MHz in well-designed PCB layouts with controlled trace impedance and minimal capacitive loading. System-level timing must account for setup time (20 ns min), hold time (0 ns min), and board-level skew - the 5962-8992501EA itself imposes no internal frequency ceiling beyond these static timing parameters.

Is 5962-8992501EA pin-compatible with commercial SN74LS378 devices?

No, 5962-8992501EA is not pin-compatible with SN74LS378. While both implement octal D-type flip-flops with enable, 5962-8992501EA uses a 16-pin CDIP package with dedicated CLKEN (pin 1) and MR̅ (pin 20), whereas SN74LS378 uses a 16-pin PDIP with CLKEN on pin 13 and MR̅ on pin 1 - differing pin assignments prevent direct PCB substitution. The 5962-8992501EA pinout matches SNJ54LS378J, not the commercial 74LS variant.

Does 5962-8992501EA include Schmitt-trigger inputs for noise immunity?

No, 5962-8992501EA does not incorporate Schmitt-trigger inputs. Its CLK, CLKEN, MR̅, and D inputs follow standard LS-TTL input thresholds: V_IH ≥ 2.0 V and V_IL ≤ 0.8 V, with no hysteresis. External RC filtering or dedicated Schmitt buffers (e.g., SN74LS14) are required in noisy environments. This design choice preserves strict timing predictability and aligns with MIL-STD-883 test methodologies that assume clean digital waveforms.

What is the meaning of "5962-8992501EA" in the context of U.S. military specifications?

The designation "5962-8992501EA" follows the U.S. Defense Logistics Agency's Standardization Document (SD-2000) format: "5962" indicates microcircuits, "89925" is the generic device identification number assigned to the octal D-type flip-flop function, "01" denotes the revision level, and "EA" specifies the case code for 16-pin CDIP packaging per MIL-STD-1835. This full part number uniquely identifies the QML-38535 Class K qualified version of the SN54LS378 function, distinguishing it from commercial or Class B variants.

Can 5962-8992501EA operate from a 3.3 V supply?

No, 5962-8992501EA is strictly a 5 V ± 5% device and is not characterized or rated for 3.3 V operation. Its internal bipolar transistor structure requires nominal 5 V for correct saturation and switching margins; operation below 4.75 V risks increased propagation delay, reduced noise immunity, and potential output logic failures. Interfacing with 3.3 V systems requires level translation - the 5962-8992501EA itself provides no internal voltage scaling or mixed-voltage tolerance.