My Inquiry
My Account
Texas Instruments SN74107N
- Part No.:
- SN74107N
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
SN74107N.pdf
- Description:
- IC FF JK TYPE DUAL 1BIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,584
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74107N from Texas Instruments is a dual J-K flip-flop with individual asynchronous clear inputs, implemented in bipolar TTL technology, operating over 0°C to 70°C, with typical propagation delay of 25 ns and power dissipation of 90 mW per flip-flop, used in synchronous digital control logic and state machine design.
For engineers reviewing the SN74107N datasheet, SN74107N pinout, SN74107N application, or SN74107N equivalent, this page delivers verified functional identity, confirmed package mapping (PDIP-14), validated timing parameters, and real-world use context for legacy TTL system maintenance and redesign.
Technical Context
The SN74107N implements two independent edge-triggered J-K flip-flops with active-low asynchronous clear (CLR̅), no clock enable, and direct set/clear functionality. It uses standard TTL input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and drives standard TTL loads (IOH = –0.4 mA, IOL = 16 mA).
It operates strictly as a negative-edge-triggered device: state changes occur on the falling edge of the clock input. Its logic family is compatible with SN7400-series TTL but not with LS or CMOS families without level-shifting due to higher drive current and lower noise margin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | TTL (standard, not LS) - defines voltage thresholds, fan-out capability (10 TTL loads), and compatibility with 7400-series logic. |
| Propagation Delay (tPLH/tPHL) | 25 ns max at VCC = 5 V - determines maximum clock frequency (~15 MHz theoretical limit) in cascaded counter or register applications. |
| Power Dissipation per Flip-Flop | 90 mW typical at 5 V - impacts thermal management in dense TTL boards; higher than LS variants like SN74LS107AN. |
| Operating Temperature Range | 0°C to +70°C - qualifies for commercial-grade systems only; excludes industrial or extended-temperature deployment. |
| Supply Voltage (VCC) | 4.75 V to 5.25 V - requires tightly regulated 5 V rail; operation outside this range risks logic instability or latch-up. |
| Output Drive Capability | IOL = 16 mA, IOH = –0.4 mA - supports direct interfacing to multiple standard TTL inputs without buffers. |
Pinout & Package
SN74107N is housed in a 14-pin plastic dual in-line package (PDIP), compliant with JEDEC MS-001, with 0.3-inch body width and 0.1-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLR̅ A (Active-Low Clear for Flip-Flop A) | Asynchronous reset: forces QA = 0 regardless of clock or J/K state; open-collector compatible when pulled high via external resistor. |
| 2 | CLK A (Clock Input A) | Falling-edge-triggered: QA changes only on clock transition from HIGH to LOW; requires clean edge with <10 ns rise/fall time. |
| 3 | J A | Data input for Flip-Flop A: sets QA = 1 on next falling clock edge if K A = 0; ignored if CLR̅ A = LOW. |
| 4 | K A | Complement data input for Flip-Flop A: resets QA = 0 on next falling clock edge if J A = 0; toggles QA if both J A and K A = 1. |
| 5 | Q A | True output of Flip-Flop A - directly drives TTL fan-out; complementary output Q̅ A is available at Pin 6. |
| 6 | Q̅ A | Inverted output of Flip-Flop A - eliminates need for external inverter in toggle or complement logic paths. |
| 7 | GND | Ground reference for all internal circuitry and I/O; must be low-impedance connection to minimize noise coupling. |
| 8 | Q̅ B | Inverted output of Flip-Flop B - provides immediate complement signal for B-side logic without added gate delay. |
| 9 | Q B | True output of Flip-Flop B - electrically identical to Q A; shares same DC and AC loading characteristics. |
| 10 | K B | Complement data input for Flip-Flop B - functionally symmetric to Pin 4; controls reset/toggle behavior of QB. |
| 11 | J B | Data input for Flip-Flop B - functionally symmetric to Pin 3; enables preset of QB on next clock edge. |
| 12 | CLK B | Falling-edge-triggered clock for Flip-Flop B - independent of CLK A; allows dual asynchronous timing domains on one IC. |
| 13 | CLR̅ B | Asynchronous clear for Flip-Flop B - independent control enables selective reset of one flip-flop without affecting the other. |
| 14 | VCC | +5 V supply input - must be decoupled with 0.1 µF ceramic capacitor placed within 1 cm of Pin 14 and Pin 7. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent J-K flip-flops | Enables compact implementation of 2-bit registers, counters, or state elements without inter-device routing delays. |
| Asynchronous active-low clear per flip-flop | Allows precise initialization or fault recovery in sequential logic without waiting for clock edges or global reset coordination. |
| Complementary true and inverted outputs (Q and Q̅) | Eliminates need for external inverters in toggle-mode counters or differential bus drivers, reducing component count and board area. |
| Standard TTL-compatible interface | Ensures drop-in replacement in legacy 7400-series designs and interoperability with existing TTL glue logic without level translation. |
| Falling-edge clock triggering | Provides deterministic setup/hold timing relative to clock edge; simplifies timing analysis in synchronous systems using common clock trees. |
Applications
| Industrial Control Sequencing | Legacy Computer Bus Interface |
|---|---|
|
Use Scenario: Implementing step-indexed state machines for PLC-based motor sequencing where each state transition is synchronized to a master clock. IC Role / Device Role / Timing Role: SN74107N serves as the core storage element in a 2-bit state register, with J/K inputs driven by combinational logic and CLR̅ used for emergency stop reset. Use Value: Dual independent clears allow selective reset of position vs. direction states; complementary outputs feed parallel decode logic without added gates. |
Use Scenario: Latching address/data strobes in early microprocessor systems (e.g., Intel 8080 or Motorola 6800) where bus timing demands predictable setup/hold margins. IC Role / Device Role / Timing Role: SN74107N captures and holds bus signals on clock fall; its 25 ns delay ensures reliable sampling before next cycle begins. Use Value: Standard TTL drive strength interfaces directly with CPU control lines and memory chips; no additional buffering required. |
| Test Equipment Pattern Generation | Hardware-Based Serial-to-Parallel Conversion |
|
Use Scenario: Generating repeating test vectors in automated test equipment (ATE) where deterministic bit patterns must be clocked at fixed intervals. IC Role / Device Role / Timing Role: SN74107N configured as a 2-bit Johnson counter (via cross-coupled feedback) produces 4-phase non-overlapping clocks. Use Value: Falling-edge trigger aligns pattern transitions precisely with system clock edges; independent clears enable on-the-fly pattern restart. |
Use Scenario: Converting serial shift-register output into parallel nibble format for display driver or ADC interface in embedded instrumentation. IC Role / Device Role / Timing Role: SN74107N stores two bits of parallel data synchronized to a derived clock; Q/Q̅ outputs drive LED segments or multiplexed digit selects. Use Value: Complementary outputs reduce external component count; TTL output drive directly sinks current for common-anode LED configurations. |
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 |
|---|---|---|---|
| SN74LS107AN | Lower power (20 mW vs. 90 mW), faster speed (15 ns delay), LS-TTL input thresholds (VIH = 2.0 V, VIL = 0.8 V), same PDIP-14 package. | Preferred for new designs requiring reduced heat and higher clock rates; not pin-identical due to different internal biasing - requires validation of fan-out and noise margin. | Select SN74LS107AN for energy-constrained or higher-speed upgrades; verify compatibility with existing TTL loads and clock edge integrity. |
| SN54107J | Military-grade (–55°C to +125°C), CDIP package, same electrical specs and pinout as SN74107N but with enhanced reliability screening and hermetic sealing. | Used in aerospace or defense systems requiring extended temperature operation and radiation-tolerant packaging; not suitable for cost-sensitive commercial use. | Choose SN54107J only when environmental qualification (MIL-PRF-38535) and extended temperature range are mandatory requirements. |
Compared with SN74107N, SN74LS107AN offers significantly lower power and improved speed but requires verification of interface robustness, while SN54107J provides military temperature and reliability at higher cost and procurement complexity - neither is a drop-in replacement without design review.
Availability
SN74107N is available at Aetrix Electronics and suitable for legacy system repair, industrial controller refurbishment, and educational lab setups requiring stable component supply of discontinued but documented TTL logic.
Supply support for SN74107N 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, pioneering analog and logic ICs, with leadership in education, industrial, and automotive electronics.
The SN74107N belongs to TI's original 7400-series TTL logic family launched in the 1960s, designed for general-purpose digital system building blocks in computers, test gear, and control panels.
FAQ
What is the function of the SN74107N?
The SN74107N is a dual J-K flip-flop with independent asynchronous clear inputs, used for storing one bit of data per section and supporting toggle, set, reset, and hold operations. Each flip-flop in the SN74107N responds to the falling edge of its clock input and provides both true (Q) and complement (Q̅) outputs, making it suitable for counters, registers, and finite-state machines in TTL-based systems.
Is the SN74107N still in production?
No, the SN74107N is marked OBSOLETE by Texas Instruments per the official packaging addendum. It is no longer manufactured, but Aetrix Electronics maintains traceable inventory for legacy system support. For new designs, TI recommends SN74LS107AN or modern alternatives with equivalent functionality and updated process technology.
What package type does the SN74107N use?
The SN74107N uses a 14-pin plastic dual in-line package (PDIP), designated as package drawing "N" per TI documentation. Its dimensions conform to JEDEC MS-001, with 0.3-inch body width and 0.1-inch lead spacing, enabling compatibility with standard through-hole PCB footprints used in vintage TTL systems.
Can SN74107N be replaced with SN74LS107AN in an existing design?
SN74LS107AN is not a direct pin-and-function replacement for SN74107N due to differences in input sensitivity, output drive strength, and power supply current profile. While both share the same pinout and basic J-K functionality, the LS variant draws less current and has tighter voltage thresholds - redesign validation is required for noise immunity, fan-out, and timing margins before substitution in the SN74107N footprint.
Does SN74107N support master-slave or edge-triggered operation?
The SN74107N is a negative-edge-triggered J-K flip-flop - it samples J and K inputs and updates Q and Q̅ outputs only on the falling edge of the clock signal. It does not implement master-slave architecture; instead, it uses a pulse-triggered internal design characteristic of early TTL flip-flops, with setup and hold times specified in the SDLS036 datasheet.
SN74107N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 7400
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- JK Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 20 MHz
- Max Propagation Delay @ V, Max CL:
- 40ns @ 5V, 15pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 400µA, 16mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Current - Quiescent (Iq):
- 20 mA
- Input Capacitance:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
SN74107N FAQ
1.How can I place an order for SN74107N through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74107N 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 SN74107N reliable?
The price and inventory of SN74107N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74107N is usually 5 days.
3.What payment methods are accepted for SN74107N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74107N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74107N?
SN74107N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74107N 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 SN74107N?
For technical support, including SN74107N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74107N requirements.
6.How does Aetrix verify that SN74107N is sourced from the original manufacturer or authorized distributors?
All SN74107N 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 SN74107N meets industry standards.
7.What is the process for return or replacement of SN74107N?
All SN74107N units undergo pre-shipment inspection (PSI). If there is an issue with SN74107N, 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 SN74107N part is unused and in its original packaging.
Return procedure for SN74107N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74107N Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
