Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Flip Flops

Texas Instruments SN54107J

Name: SN54107J
Brand: Texas Instruments
SKU: SN54107J
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SN54107J

Manufacturer:: Texas Instruments

Category:: Flip Flops

Package:: -

Datasheet:: SN54107J.pdf

Description:: 54107 DUAL J-K FLIP-FLOPS WITH C

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,327

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SN54107J from Texas Instruments is a dual J-K flip-flop with individual clear inputs, implemented in bipolar TTL logic, rated for military temperature range (–55°C to +125°C), packaged in a 14-pin ceramic dual in-line package (CDIP), and designed for synchronous digital control in aerospace and defense timing circuits.

For engineers reviewing the SN54107J datasheet, SN54107J pinout, SN54107J application, or SN54107J equivalent, key selection considerations include its negative-edge-triggered clocking, independent asynchronous clear per section, guaranteed propagation delay ≤40 ns at VCC = 5 V, and compatibility with legacy 5-V TTL logic families in high-reliability systems.

Technical Context

The SN54107J contains two independent J-K flip-flops, each with complementary Q and Q̅ outputs, active-low asynchronous clear (CLR̅), and a common negative-edge-triggered clock input. It operates exclusively from a single +5-V supply and requires no external biasing or pull-up resistors.

Its logic behavior follows standard J-K truth table operation: when J=K=1, it toggles on each falling clock edge; when CLR̅=0, Q is forced low regardless of clock or J/K states. No preset function is provided - only clear is supported.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Family	TTL (bipolar, not LS) - compatible with original 7400-series drive/load levels and noise margins.
Supply Voltage	VCC = 4.5 V to 5.5 V - fixed 5-V operation; no wide-VCC support or voltage scaling.
Propagation Delay	tPLH / tPHL ≤ 40 ns max at VCC = 5 V, CL = 15 pF - defines maximum clock-to-output timing in synchronous state machines.
Operating Temperature	–55°C to +125°C - qualified per MIL-PRF-38535 for extended environmental robustness.
Input Thresholds	VIL ≤ 0.8 V, VIH ≥ 2.0 V - ensures reliable interfacing with standard TTL outputs and switches.
Output Drive	IOL = 16 mA, IOH = –0.4 mA - supports direct fan-out to 10 standard TTL inputs without buffers.

Pinout & Package

SN54107J is housed in a hermetically sealed 14-pin ceramic dual in-line package (CDIP), designated drawing J, with 0.3-inch body width and 5.08 mm max height per MIL-STD-1835 GDIP1-T14. Pin 1 is marked by an optional index dot or cap notch.

Pin/Terminal	Circuit Role	Design Meaning
1	CLR̅A (Active-Low Clear A)	Asynchronous reset for Flip-Flop A; forces QA = 0 independently of clock or J/K.
2	JA	Data input controlling QA set behavior on next clock edge (J=1, K=0 → set).
3	KA	Data input controlling QA reset behavior on next clock edge (J=0, K=1 → reset).
4	CLKA (Negative-Edge Trigger)	Sampling occurs on falling edge; no internal synchronization or metastability hardening.
5	QA	True output of Flip-Flop A; complements Q̅A (Pin 6).
6	Q̅A	Inverted output of Flip-Flop A; electrically complementary to QA (Pin 5).
7	GND	Power return reference for all internal circuitry and I/O.
8	VCC	+5-V supply input; decoupling capacitor required near Pin 8 for noise immunity.
9	Q̅B	Inverted output of Flip-Flop B; electrically complementary to QB (Pin 10).
10	QB	True output of Flip-Flop B; complements Q̅B (Pin 9).
11	CLKB (Negative-Edge Trigger)	Independent falling-edge clock for Flip-Flop B; no skew tolerance specified.
12	KB	Data input controlling QB reset behavior on next clock edge.
13	JB	Data input controlling QB set behavior on next clock edge.
14	CLR̅B (Active-Low Clear B)	Asynchronous reset for Flip-Flop B; forces QB = 0 independently of clock or J/K.

Key Features

Feature	Design Value
Dual independent J-K sections	Enables compact implementation of two-bit synchronous counters or shift registers without inter-stage buffering.
Individual active-low asynchronous clear	Allows selective reset of one flip-flop while preserving state in the other - critical for partial-state recovery in control sequencers.
Negative-edge clock triggering	Supports precise timing alignment with falling-edge clock domains and avoids race conditions in cascaded configurations.
MIL-qualified temperature range	Validated operation from –55°C to +125°C enables use in unheated avionics bays and engine-mounted controllers.
Hermetic CDIP packaging	Ceramic/glass-sealed construction prevents moisture ingress and ensures long-term reliability in high-humidity or vacuum environments.

Applications

Aerospace Sequencing Logic	Defense Radar Timing Control
Use Scenario: Synchronizing pulse generation and mode selection in satellite telemetry command decoders. IC Role / Device Role / Timing Role: Dual J-K flip-flop implementing a 2-bit modulo-4 counter that advances on radar PRF falling edges. Use Value: Guaranteed 40 ns max propagation delay ensures deterministic timing alignment across temperature extremes without recalibration.	Use Scenario: Managing antenna rotation phase states and transmitter enable sequencing in ground-based fire-control radars. IC Role / Device Role / Timing Role: State register holding azimuth/elevation position flags with independent clear for emergency abort. Use Value: Individual CLR̅ pins allow immediate zeroing of one axis while retaining tracking data on the other - minimizing system recovery latency.
Secure Communication Handshake	Hardened Industrial PLC Latch
Use Scenario: Enabling cryptographic key handshake validation in tamper-resistant crypto modules where timing predictability is mandated. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing synchronized challenge-response bits under strict clock domain isolation. Use Value: Negative-edge triggering eliminates setup/hold violations when interfacing with externally generated secure clocks.	Use Scenario: Latching emergency stop signals and safety interlock states in nuclear plant instrumentation cabinets. IC Role / Device Role / Timing Role: Fail-safe memory element retaining last-known safe state during brownout or EMI transients. Use Value: Hermetic CDIP package and –55°C to +125°C rating ensure uninterrupted operation in radiation-prone, thermally unstable enclosures.

Aerospace Sequencing Logic

Defense Radar Timing Control

Use Scenario: Synchronizing pulse generation and mode selection in satellite telemetry command decoders.

IC Role / Device Role / Timing Role: Dual J-K flip-flop implementing a 2-bit modulo-4 counter that advances on radar PRF falling edges.

Use Value: Guaranteed 40 ns max propagation delay ensures deterministic timing alignment across temperature extremes without recalibration.

Use Scenario: Managing antenna rotation phase states and transmitter enable sequencing in ground-based fire-control radars.

IC Role / Device Role / Timing Role: State register holding azimuth/elevation position flags with independent clear for emergency abort.

Use Value: Individual CLR̅ pins allow immediate zeroing of one axis while retaining tracking data on the other - minimizing system recovery latency.

Secure Communication Handshake

Hardened Industrial PLC Latch

Use Scenario: Enabling cryptographic key handshake validation in tamper-resistant crypto modules where timing predictability is mandated.

IC Role / Device Role / Timing Role: Edge-triggered storage element capturing synchronized challenge-response bits under strict clock domain isolation.

Use Value: Negative-edge triggering eliminates setup/hold violations when interfacing with externally generated secure clocks.

Use Scenario: Latching emergency stop signals and safety interlock states in nuclear plant instrumentation cabinets.

IC Role / Device Role / Timing Role: Fail-safe memory element retaining last-known safe state during brownout or EMI transients.

Use Value: Hermetic CDIP package and –55°C to +125°C rating ensure uninterrupted operation in radiation-prone, thermally unstable enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN54LS107A	Lower power (19 mW vs. 120 mW), faster speed (tPD = 25 ns), but reduced drive (IOL = 8 mA) and narrower noise margin.	Preferred in battery-powered or high-density boards where thermal budget and propagation delay dominate over drive strength.	Select SN54LS107A only if load capacitance is ≤15 pF and system-level noise immunity has been verified.
SNJ54107J	Identical electrical specs and CDIP-J package; differs only in screening level (SMD 5962-87549 vs. 5962-87548) and lot traceability documentation.	Required for DoD contracts mandating full DSCC traceability and 100% burn-in testing.	Choose SNJ54107J when compliance with MIL-PRF-38535 Class V or QML-38535 requirements is contractually enforced.

Compared with SN54LS107A and SNJ54107J, the SN54107J offers higher output drive and broader noise margins at the cost of higher power, while SNJ54107J provides identical functionality with enhanced test documentation - making SN54107J optimal for legacy-compatible, high-noise industrial control where raw drive matters most.

Availability

SN54107J is available at Aetrix Electronics and suitable for aerospace sequencing logic, defense radar timing control, and hardened industrial PLC latch applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN54107J 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 manufacturer founded in 1930, specializing in analog, embedded processing, and high-reliability logic solutions for industrial, automotive, and defense markets.

The SN54107J belongs to TI's military-grade TTL logic family, developed in the 1970s to meet stringent performance, reliability, and environmental requirements for aerospace and defense electronics.

FAQ

What logic family does SN54107J belong to, and how does it differ from LS variants?

SN54107J belongs to the original bipolar TTL logic family (not LS), delivering higher output drive (16 mA sink) and wider noise margins than LS versions. Unlike SN54LS107A, it consumes more power (120 mW typical) and has slower propagation delay (≤40 ns), but maintains full compatibility with legacy 7400-series systems where robustness outweighs speed.

Does SN54107J support preset functionality?

No, SN54107J does not include preset inputs. It provides only active-low asynchronous clear (CLR̅) for each J-K section. To implement preset behavior, external combinational logic must be added to force J=1/K=0 and use the clock edge - SN54107J itself lacks dedicated preset terminals.

What is the maximum clock frequency supported by SN54107J?

SN54107J does not specify a maximum clock frequency in its datasheet. Its usable frequency is limited by propagation delay (≤40 ns) and setup/hold timing; for reliable operation, maximum clock rate should remain below 10 MHz in worst-case temperature and voltage conditions to maintain timing margins.

Is SN54107J RoHS compliant?

SN54107J is not RoHS compliant. As a legacy military-grade CDIP device manufactured with leaded solder and ceramic-glass sealing, it falls under RoHS exemption 7a (high-melting-temperature solder). Its Pb content is intentional and necessary for hermeticity and thermal cycling reliability.

Can SN54107J be used in commercial-temperature applications?

Yes, SN54107J operates reliably from –55°C to +125°C, fully covering commercial (0°C to +70°C) and industrial (–40°C to +85°C) ranges. However, its higher power consumption and cost make SN74LS107AN more economical for non-military applications where extended temperature range is unnecessary.

SN54107J Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Function:: -

Type:: -

Output Type:: -

Number of Elements:: -

Number of Bits per Element:: -

Clock Frequency:: -

Max Propagation Delay @ V, Max CL:: -

Trigger Type:: -

Current - Output High, Low:: -

Voltage - Supply:: -

Current - Quiescent (Iq):: -

Input Capacitance:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

SN54107J FAQ

1.How can I place an order for SN54107J through Aetrix?

Please submit a Request for Quotation (RFQ) for SN54107J on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SN54107J reliable?

The price and inventory of SN54107J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN54107J is usually 5 days.

3.What payment methods are accepted for SN54107J?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN54107J transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN54107J?

SN54107J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN54107J order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SN54107J?

For technical support, including SN54107J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN54107J requirements.

6.How does Aetrix verify that SN54107J is sourced from the original manufacturer or authorized distributors?

All SN54107J products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN54107J meets industry standards.

7.What is the process for return or replacement of SN54107J?

All SN54107J units undergo pre-shipment inspection (PSI). If there is an issue with SN54107J, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SN54107J part is unused and in its original packaging.

Return procedure for SN54107J:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…