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NXP Semiconductors N74F109D,623
- Part No.:
- N74F109D,623
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
N74F109D,623.pdf
- Description:
- IC FF JK TYPE DUAL 1BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,507
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Product details
Overview
N74F109D,623 from Nexperia is a dual positive edge-triggered J-K flip-flop in 16-pin SO package (SOT109-1), operating at 5V supply with 125MHz max clock frequency, 12.3mA typical supply current, and –40°C to +85°C industrial temperature range. It provides asynchronous set/reset, true/complementary outputs, and supports D-type operation via J-K tie-down - used in synchronous logic control, state machines, and clock-domain synchronization.
For engineers reviewing the N74F109D,623 datasheet, N74F109D,623 pinout, N74F109D,623 application, or N74F109D,623 equivalent, key selection criteria include edge-triggered JK functionality, industrial-grade thermal performance, SO16 footprint compatibility, and TTL-compatible input/output loading (1.0/1.0 U.L. on J/K/CP, 1.0/3.0 on SD/RD).
Technical Context
The N74F109D,623 implements two independent JK flip-flops sharing no internal coupling; each features asynchronous active-low set (SD) and reset (RD) inputs decoupled from clock (CP), enabling immediate state override. Clock triggering responds to the low-to-high transition between 0.8V–2.0V, with setup time of 3.0ns and hold time of 1.0ns for J/K inputs.
Propagation delays are specified as 3.8–9.2ns (CP→Q) and 2.8–10.5ns (SD/RD→Q) across temperature and voltage ranges; output drive capability is ±1mA (high) and 20mA (low), supporting direct interfacing with standard 74F loads without buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74F TTL - ensures compatibility with legacy 74F systems and defined noise margins (VIL = 0.8V, VIH = 2.0V) |
| Max Clock Frequency | 125MHz at VCC = 5V, Tamb = 25°C - enables high-speed sequential logic in data-path and control units |
| Supply Current (ICC) | 12.3mA typical total - defines power budget for multi-device logic arrays without excessive thermal load |
| Operating Temperature | –40°C to +85°C - qualifies for industrial automation, motor control, and outdoor embedded systems |
| Output Drive | 20mA sink per Q/Q̅ - directly drives multiple 74F inputs (fan-out ≥33) or small LEDs without external drivers |
| Setup/Hold Time | tsu = 3.0ns, th = 1.0ns - constrains minimum clock period and dictates PCB trace length matching for timing closure |
| Package | SOT109-1 (SO16, 3.9mm body width) - surface-mount compatible with standard reflow profiles and automated assembly |
Pinout & Package
16-pin plastic small outline package (SO16), 3.9 mm body width, compliant with SOT109-1 mechanical drawing. Pin 1 index marker located at top-left corner when notch faces upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | J0 | JK flip-flop 0 data input - controls next-state logic on rising CP0 edge when RD0/SD0 inactive |
| 2 | CP0 | Clock input for flip-flop 0 - edge-sensitive; low-to-high transition triggers state evaluation and update |
| 3 | SD0 | Asynchronous set (active low) for Q0 - forces Q0 = H, Q0̅ = L independent of CP0 or J0/K0 |
| 4 | RD0 | Asynchronous reset (active low) for Q0 - forces Q0 = L, Q0̅ = H independent of CP0 or J0/K0 |
| 5 | J1 | JK flip-flop 1 data input - identical function to J0 but for second independent channel |
| 6 | K1 | JK flip-flop 1 complement input - determines toggle/set/reset behavior with J1 on CP1 edge |
| 7 | RD1 | Asynchronous reset (active low) for Q1 - independent control path from RD0 |
| 8 | GND | Ground reference - all input thresholds and output voltages referenced to this node |
| 9 | Q0̅ | Inverted output of flip-flop 0 - complementary to Q0; enables direct NOR/NAND logic synthesis |
| 10 | Q0 | True output of flip-flop 0 - primary state register output for feedback or system interface |
| 11 | Q1 | True output of flip-flop 1 - independent register output usable for parallel data storage or counter stages |
| 12 | CP1 | Clock input for flip-flop 1 - electrically isolated from CP0; allows dual-clock domain operation |
| 13 | K0 | JK flip-flop 0 complement input - works with J0 to define toggle (J=K=H), set (J=H,K=L), or reset (J=L,K=H) |
| 14 | SD1 | Asynchronous set (active low) for Q1 - independent override for second flip-flop |
| 15 | Q1̅ | Inverted output of flip-flop 1 - matches Q0̅ polarity and timing for balanced bus driving |
| 16 | VCC | +5V supply rail - must be decoupled locally (≤100nF ceramic) due to fast switching transients |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent JK flip-flops | Enables compact 2-bit state storage or counter stage without inter-channel timing dependency |
| Asynchronous active-low set/reset | Allows immediate initialization or fault recovery without waiting for clock edge - critical for safety-critical resets |
| TTL-compatible input thresholds | VIL = 0.8V / VIH = 2.0V ensures robust noise immunity and interoperability with 74F/74LS logic families |
| 125MHz maximum clock rate | Supports high-throughput digital control loops and real-time signal sequencing in industrial PLCs |
| Industrial temperature range (–40°C to +85°C) | Validates operation in uncontrolled environments such as factory floors, transportation electronics, and outdoor enclosures |
Applications
| Industrial PLC Control Logic | Digital Counter Stage |
|---|---|
|
Use Scenario: Implementing sequencer states in programmable logic controllers where deterministic timing and fail-safe reset are required. IC Role / Device Role / Timing Role: State register holding machine cycle position; SD/RD used for emergency stop override. Use Value: Asynchronous reset guarantees immediate state clearance within 2.8ns (min), meeting IEC 61508 response time requirements. |
Use Scenario: Building 2-bit binary up/down counters in test equipment or instrumentation front-ends. IC Role / Device Role / Timing Role: Dual flip-flop providing synchronized bit storage with shared clock enable and direction control. Use Value: 125MHz fmax supports counting rates up to 62.5MHz with 2-stage pipeline, enabling high-resolution time interval measurement. |
| Serial-to-Parallel Data Latch | Glitch-Free Clock Domain Crossing |
|
Use Scenario: Converting serial shift-register output into parallel byte format for microcontroller input capture. IC Role / Device Role / Timing Role: Edge-triggered latch capturing two bits simultaneously on common CP edge; Q/Q̅ used for differential sampling. Use Value: Matched propagation delays (tPLH/tPHL ≤ 9.2ns) ensure skew < 1ns between Q0/Q1, preserving data validity across parallel bus. |
Use Scenario: Synchronizing control signals between asynchronous clock domains in mixed-signal SoC interfaces. IC Role / Device Role / Timing Role: First-stage synchronizer using SD/RD to force known state before metastability resolution in second stage. Use Value: Guaranteed 2.0ns recovery time (trec) after SD/RD deassertion prevents race conditions during clock domain handoff. |
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 |
|---|---|---|---|
| SN74F109DR | TI-manufactured 74F109 in SOIC-16; identical AC/DC specs but different package marking and tape/reel packaging. | No functional difference; suitable for drop-in replacement where TI sourcing is preferred or required by BOM policy. | Select SN74F109DR only if TI qualification or logistics alignment is mandated; electrical and timing behavior matches N74F109D,623 exactly. |
| 74ACT109M | Advanced CMOS (ACT) family: 5V supply, 12ns tPD (typ), 24mA drive, but VIL = 1.5V / VIH = 3.5V - not TTL-compatible. | Higher speed and drive, but requires level-shifting when interfacing with legacy 74F/74LS systems. | Choose 74ACT109M only in new designs with pure CMOS signaling; avoid in mixed-logic systems without interface buffers. |
Compared with SN74F109DR, N74F109D,623 offers identical logic behavior and timing but differs in traceability and long-term supply continuity under Nexperia's industrial support program; versus 74ACT109M, it maintains TTL voltage compatibility at the cost of ~3× higher propagation delay, making it preferable for legacy system upgrades over greenfield high-speed designs.
Availability
N74F109D,623 is available at Aetrix Electronics and suitable for industrial automation, programmable logic controllers, and test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for N74F109D,623 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
Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.
The 74F logic family - including N74F109D,623 - was designed for high-speed TTL-compatible digital control in industrial and telecom infrastructure, emphasizing reliability, thermal robustness, and pin-level compatibility with legacy 74-series systems.
FAQ
What is the maximum clock frequency specification for N74F109D,623 under industrial temperature conditions?
The N74F109D,623 is rated for a minimum guaranteed maximum clock frequency of 90MHz across the full industrial temperature range (–40°C to +85°C) at VCC = 5.0V ±10% and CL = 50pF. This value reflects worst-case timing margin for reliable edge-triggered operation in thermally demanding environments, distinct from the 125MHz typical value measured at 25°C.
Does N74F109D,623 support true D-type flip-flop operation, and how is it implemented?
Yes, N74F109D,623 supports D-type operation by connecting the J and K inputs of each flip-flop together - applying the same signal to both pins configures the device to toggle only when the input is high (set) or low (reset) on the clock edge. This eliminates need for external gates and reduces board space in register-file or pipeline-stage implementations.
What are the absolute maximum ratings for supply voltage and input voltage on N74F109D,623?
The N74F109D,623 has an absolute maximum supply voltage (VCC) of –0.5V to +7.0V and absolute maximum input voltage (VIN) of –0.5V to +7.0V. Exceeding these limits, even momentarily, may cause permanent damage. Recommended operating VCC is strictly 4.5V to 5.5V; input voltages beyond VIH = 2.0V or below VIL = 0.8V risk undefined logic states.
How does the asynchronous reset (RD) behavior interact with the clock input in N74F109D,623?
In N74F109D,623, the asynchronous reset (RD) operates independently of the clock: asserting RD low forces Q to low and Q̅ to high immediately, regardless of CP state or timing. Recovery time (trec = 2.0ns min) must elapse after RD returns high before the next CP edge is recognized - violating this causes metastability or skipped transitions.
Is N74F109D,623 pin-compatible with through-hole N74F109N, and what design considerations apply?
Yes, N74F109D,623 is pin-compatible with N74F109N: both share identical 16-pin numbering, signal assignment, and electrical interface. However, the SO package (SOT109-1) requires reflow-compatible PCB layout, smaller pad dimensions, and attention to thermal relief - unlike the DIP (SOT38-4) version which supports wave soldering and prototyping breadboards.
N74F109D,623 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74F
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Set(Preset) and Reset
- Type:
- JK Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 125 MHz
- Max Propagation Delay @ V, Max CL:
- 8ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 1mA, 20mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 17 mA
- Input Capacitance:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
N74F109D,623 FAQ
1.How can I place an order for N74F109D,623 through Aetrix?
Please submit a Request for Quotation (RFQ) for N74F109D,623 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 N74F109D,623 reliable?
The price and inventory of N74F109D,623 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for N74F109D,623 is usually 5 days.
3.What payment methods are accepted for N74F109D,623?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for N74F109D,623 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for N74F109D,623?
N74F109D,623 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your N74F109D,623 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 N74F109D,623?
For technical support, including N74F109D,623 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your N74F109D,623 requirements.
6.How does Aetrix verify that N74F109D,623 is sourced from the original manufacturer or authorized distributors?
All N74F109D,623 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 N74F109D,623 meets industry standards.
7.What is the process for return or replacement of N74F109D,623?
All N74F109D,623 units undergo pre-shipment inspection (PSI). If there is an issue with N74F109D,623, 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 N74F109D,623 part is unused and in its original packaging.
Return procedure for N74F109D,623:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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