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NXP Semiconductors 74HC109N,652
- Part No.:
- 74HC109N,652
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
74HC109N,652.pdf
- Description:
- IC FF JK TYPE DUAL 1BIT 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,885
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Product details
Overview
74HC109N,652 from NXP Semiconductors (formerly Philips) is a dual positive-edge-triggered JK flip-flop with asynchronous set and reset inputs, operating at 2–6 V supply voltage, with 75 MHz maximum clock frequency and 15 ns typical propagation delay (CP to Q), used in synchronous logic control, state machines, and clock-domain synchronization circuits.
For engineers reviewing the 74HC109N,652 datasheet, 74HC109N,652 pinout, 74HC109N,652 application, or 74HC109N,652 equivalent, key selection criteria include asynchronous active-low SD/RD behavior, Schmitt-trigger clock input tolerance, dual independent JK functionality, and compatibility with 74LSTTL-level systems.
Technical Context
The 74HC109N,652 implements two independent edge-triggered JK flip-flops sharing no internal coupling-each has dedicated J, K, CP, SD, RD, Q, and Q̅ terminals. Its Schmitt-trigger clock input enables robust operation with slow-rising or noisy clock edges, and asynchronous set/reset override clock timing.
All control inputs (J, K, SD, RD) require stable states one setup time (14 ns min at VCC = 4.5 V) before the LOW-to-HIGH clock transition; hold time is 3 ns minimum. Output drive capability matches standard CMOS loads (±4 mA at VCC = 4.5 V), and power dissipation capacitance is 20 pF per flip-flop.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC high-speed Si-gate CMOS, TTL-compatible input thresholds |
| Supply Voltage Range | 2.0 V to 6.0 V - supports battery-powered and mixed-voltage logic interfaces |
| Max Clock Frequency | 75 MHz at VCC = 5 V - enables high-speed sequential control in digital systems |
| Propagation Delay (CP→Q) | 15 ns typical at CL = 15 pF, VCC = 5 V - determines minimum clock period in timing-critical paths |
| Input Capacitance | 3.5 pF - minimizes loading on driving gates and preserves signal integrity |
| Power Dissipation Cap. (per FF) | 20 pF - used to calculate dynamic power: PD = CPD × VCC² × fi + Σ(CL × VCC² × fo) |
Pinout & Package
74HC109N,652 is supplied in a 16-pin plastic dual in-line package (DIP), designated SOT27-1 per Philips package outlines, with 0.3 inch body width and through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1RD, 2RD | Asynchronous reset-direct inputs (active LOW); override clock and J/K state unconditionally |
| 2, 14, 3, 13 | 1J, 2J, 1K, 2K | Synchronous data control inputs; define next-state logic per JK truth table on clock edge |
| 4, 12 | 1CP, 2CP | Positive-edge-triggered clock inputs; Schmitt-triggered for noise immunity and slow-edge tolerance |
| 5, 11 | 1SD, 2SD | Asynchronous set-direct inputs (active LOW); force Q = HIGH regardless of clock or J/K |
| 6, 10 | 1Q, 2Q | True outputs; provide registered logic state synchronized to CP edge |
| 7, 9 | 1Q̅, 2Q̅ | Complementary outputs; enable direct use in differential signaling or feedback loops |
| 8 | GND | Ground reference (0 V) - required return path for all internal current paths |
| 16 | VCC | Positive supply voltage input - powers all internal logic and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent JK flip-flops | Enables two separate state-holding functions in one IC - reduces board space vs. discrete flip-flops |
| Asynchronous active-LOW set/reset | Allows immediate state initialization or forced reset without waiting for clock edge - critical for power-up sequencing |
| Schmitt-trigger clock input | Accepts slow-rising or noisy clock signals (e.g., RC-generated clocks) without false triggering |
| J/K-to-D conversion support | Tying J and K together configures each flip-flop as a D-type - increases design flexibility with no external logic |
| Pin compatibility with 74LS109 | Permits drop-in replacement in legacy TTL designs while delivering lower power and higher speed |
Applications
| Industrial Control Sequencing | Digital Test Equipment |
|---|---|
|
Use Scenario: Controlling multi-step motor actuation sequences in PLC-based automation panels where deterministic state transitions are required. IC Role / Device Role / Timing Role: State register holding step position; asynchronous reset ensures safe startup after power loss. Use Value: Dual independent flip-flops allow parallel tracking of master/slave axis positions without cross-talk or shared timing constraints. |
Use Scenario: Generating precise, repeatable stimulus patterns in automated boundary-scan test fixtures. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing pattern bits synchronized to system clock; Schmitt-trigger CP accepts jittery test clocks. Use Value: 75 MHz max clock frequency supports pattern rates up to 75 MSPS, enabling high-throughput functional testing. |
| Communication Protocol Logic | Legacy System Emulation |
|
Use Scenario: Implementing UART start-bit detection and framing logic in microcontroller-peripheral bridge circuits. IC Role / Device Role / Timing Role: JK flip-flop configured as toggle mode detects falling edge of start bit; asynchronous SD/RD manage frame boundaries. Use Value: Active-LOW asynchronous controls allow immediate frame abort or restart - essential for error recovery in half-duplex links. |
Use Scenario: Replacing obsolete 74LS109 in retro-computing hardware restoration projects requiring authentic TTL timing behavior. IC Role / Device Role / Timing Role: Pin- and function-compatible upgrade offering identical logic behavior with improved noise margin and reduced power draw. Use Value: 74HC109N,652 maintains same propagation delays and setup/hold windows as LS109 at 5 V, ensuring drop-in reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual JK flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT109N,652 | CMOS device with TTL-compatible input thresholds (VIH = 2.0 V min); slightly slower fmax (61 MHz) and higher CPD (22 pF) | Better suited for mixed 5 V TTL/CMOS systems where input voltage compatibility is critical | Select when interfacing directly with legacy 74LS or 74F logic without level shifters |
| SN74HC109N | Functionally identical 74HC109 from Texas Instruments; same AC/DC specs, but different package marking and traceability | No functional or timing difference - suitable for second-source procurement or supply chain diversification | Choose for multi-source assurance without redesign or qualification revalidation |
Compared with 74HC109N,652, the 74HCT109N,652 trades minor speed reduction for guaranteed 5 V TTL interoperability, while SN74HC109N provides identical performance with alternate supply-chain provenance - both preserve pinout, function table, and asynchronous control behavior.
Availability
74HC109N,652 is available at Aetrix Electronics and suitable for industrial control sequencing, digital test equipment, communication protocol logic, and legacy system emulation requiring stable component supply across long-lifecycle programs.
Supply support for 74HC109N,652 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
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74HC109N,652 belongs to NXP's legacy 74HC logic family, designed for high-speed, low-power, pin-compatible upgrades of TTL-based digital systems in industrial and instrumentation environments.
FAQ
What is the supply voltage range supported by the 74HC109N,652?
The 74HC109N,652 operates over a supply voltage range of 2.0 V to 6.0 V. This wide range allows it to interface with both 3.3 V and 5 V logic systems, and supports battery-powered applications where voltage may drift. At VCC = 2.0 V, the device still meets specified timing and drive requirements per the AC characteristics table.
Does the 74HC109N,652 support asynchronous set and reset, and how do they behave?
Yes, the 74HC109N,652 features asynchronous active-LOW set (SD) and reset (RD) inputs. When SD is LOW, Q goes HIGH and Q̅ goes LOW immediately, overriding clock and J/K inputs. When RD is LOW, Q goes LOW and Q̅ goes HIGH - also independently of the clock. Both inputs are fully asynchronous and take precedence over all synchronous operations.
Can the 74HC109N,652 be used as a D-type flip-flop?
Yes, the 74HC109N,652 can be configured as a D-type flip-flop by connecting the J and K inputs of each section together. With J = K, the JK flip-flop toggles when J = K = HIGH, holds when J = K = LOW, and acts as a transparent latch when J ≠ K - but tying J to K and using that node as D input yields true D-type behavior on the rising clock edge.
What is the maximum clock frequency of the 74HC109N,652, and under what conditions is it specified?
The 74HC109N,652 achieves a maximum clock frequency of 75 MHz at VCC = 5 V, CL = 15 pF, and Tamb = 25 °C. At VCC = 4.5 V and −40 °C to +85 °C, the guaranteed minimum fmax is 28 MHz. The specification assumes proper setup/hold timing and clean clock edges - Schmitt-trigger input relaxes rise/fall time requirements.
Is the 74HC109N,652 pin compatible with older TTL versions like the 74LS109?
Yes, the 74HC109N,652 is pin compatible with the 74LS109 and functionally compatible with its truth table and asynchronous control behavior. It retains identical pin numbering and terminal roles, allowing direct PCB replacement. However, users must verify that the higher speed and CMOS input thresholds meet system timing and noise margin requirements.
74HC109N,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- 81 MHz
- Max Propagation Delay @ V, Max CL:
- 30ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-DIP
74HC109N,652 FAQ
1.How can I place an order for 74HC109N,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC109N,652 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 74HC109N,652 reliable?
The price and inventory of 74HC109N,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC109N,652 is usually 5 days.
3.What payment methods are accepted for 74HC109N,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC109N,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC109N,652?
74HC109N,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC109N,652 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 74HC109N,652?
For technical support, including 74HC109N,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC109N,652 requirements.
6.How does Aetrix verify that 74HC109N,652 is sourced from the original manufacturer or authorized distributors?
All 74HC109N,652 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 74HC109N,652 meets industry standards.
7.What is the process for return or replacement of 74HC109N,652?
All 74HC109N,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC109N,652, 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 74HC109N,652 part is unused and in its original packaging.
Return procedure for 74HC109N,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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