Texas Instruments 84150012A

Overview

84150012A from Texas Instruments is a dual J-K positive-edge-triggered flip-flop in ceramic LCCC (FK) package, rated for −55°C to 125°C operation. It features wide supply voltage range (2 V to 6 V), low input current (≤1 µA), ±4-mA output drive at 5 V, typical propagation delay of 12 ns, and high-current outputs capable of driving up to 10 LSTTL loads. It is used in military-grade synchronous logic control circuits requiring radiation-tolerant timing integrity.

For engineers reviewing the 84150012A datasheet, 84150012A pinout, 84150012A application, or 84150012A equivalent, this page delivers verified functional identity, validated pin mapping, confirmed operating margins, real-world use cases in harsh-environment digital systems, and two technically documented alternative parts with explicit differences.

Technical Context

The 84150012A implements two independent J-K flip-flops with asynchronous preset (PRE) and clear (CLR) inputs active-low, enabling immediate state override regardless of clock or data. Each flip-flop triggers on the positive-going edge of CLK and supports toggle mode (J=1, K=1) or D-type behavior (J=K tied).

Its CMOS architecture ensures low power consumption (ICC ≤ 40 µA max), high noise immunity (VIH ≥ 3.15 V at VCC = 4.5 V), and robust timing: setup time tsu = 20 ns min at 4.5 V, hold time th = 0 ns, and maximum clock frequency fmax = 31 MHz at VCC = 4.5 V and TA = 25°C.

Key Specifications

Pinout & Package

Ceramic Leadless Chip Carrier (LCCC), FK package, 20-terminal, hermetically sealed, no internal connections on pins 3, 4, 9, 10, 11, 12, 13, and 18 per TI SCLS470A datasheet Figure 2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual J-K flip-flop applications.

Compared with 84150012A, SNJ54HC109J lacks hermetic sealing and has higher thermal resistance, limiting use in vacuum or high-humidity deployments; SNJ54HC109W offers superior thermal dissipation but requires larger PCB area and lacks LCCC's zero-insertion-force compatibility with socketed test fixtures.

Availability

84150012A is available at Aetrix Electronics and suitable for avionics flight control sequencing, military radar pulse timing, and tactical vehicle power management requiring stable component supply across extended temperature ranges and long lifecycle commitments.

Supply support for 84150012A 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 logic ICs, with decades of heritage in high-reliability military and aerospace components.

The SN54HC109 family-including 84150012A-is designed for radiation-tolerant, extended-temperature digital control in defense, space, and critical infrastructure systems where deterministic timing and latch-up immunity are mandatory.

FAQ

What is the exact package type and pin count of 84150012A?

The 84150012A is packaged in a 20-terminal ceramic Leadless Chip Carrier (LCCC), designated FK by Texas Instruments. It contains two independent J-K flip-flops with dedicated PRE, CLR, CLK, J, K, Q, and Q̅ terminals per channel, plus VCC, GND, and eight NC pins as confirmed in the SCLS470A datasheet Figure 2 top view.

Does 84150012A support 3.3 V operation?

Yes, 84150012A supports 3.3 V operation within its specified 2 V to 6 V supply range. At VCC = 3.3 V, it maintains guaranteed VIH ≥ 2.31 V and VIL ≤ 0.99 V per TI's recommended operating conditions, and delivers ≥±3 mA output drive-sufficient for interfacing with standard 3.3 V CMOS logic families.

What is the maximum clock frequency for 84150012A at 5 V and −55°C?

At VCC = 5 V and TA = −55°C, the 84150012A maintains functional operation up to 21 MHz minimum clock frequency as specified in the SN54HC109 column of the "timing requirements" table (SCLS470A, page 4). This is derated from the 31 MHz typical value at 25°C due to increased propagation delay at cold temperatures.

How does the asynchronous clear (CLR) function behave on 84150012A?

On 84150012A, the CLR input is active-low and asynchronous: asserting CLR low immediately forces Q = L and Q̅ = H for that flip-flop, overriding all other inputs including CLK, J, and K. This action occurs independently of the clock edge and persists until CLR returns high, after which normal edge-triggered operation resumes.

Is 84150012A RoHS compliant?

84150012A carries a POST-PLATE finish per TI's Package Option Addendum and is classified as RoHS Exempt due to its lead-containing ceramic LCCC construction. It complies with EU RoHS Directive Annex III exemptions for high-melting-temperature solder (700°C+) and hermetically sealed packages, making it acceptable for defense and aerospace applications governed by MIL-PRF-38535.