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Texas Instruments CD74HCT109M96
- Part No.:
- CD74HCT109M96
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD74HCT109M96.pdf
- Description:
- IC FF JK TYPE DUAL 1BIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,995
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Product details
Overview
CD74HCT109M96 from Texas Instruments is a dual positive-edge-triggered J-K flip-flop with asynchronous active-low set (S) and reset (R) inputs, operating at 4.5V–5.5V supply voltage, delivering 54MHz maximum clock frequency at VCC = 5V and CL = 15pF, and rated for -55°C to +125°C industrial/military temperature range. It serves as a synchronous logic storage element in digital control sequencers, state machines, and clock-domain synchronization circuits.
For engineers reviewing the CD74HCT109M96 datasheet, CD74HCT109M96 pinout, CD74HCT109M96 application, or CD74HCT109M96 equivalent, key selection criteria include LSTTL-compatible input thresholds (VIL ≤ 0.8V, VIH ≥ 2.0V), guaranteed propagation delay of 17ns (typ.) from CP to Q at 5V/15pF, dual independent flip-flop architecture with non-overlapping set/reset priority, and SOIC-16 tape-and-reel packaging for automated assembly.
Technical Context
The CD74HCT109M96 implements two independent edge-triggered J-K flip-flops sharing no internal coupling-each with dedicated J, K, CP, S, R, Q, and Q̅ terminals. Its HCT logic family ensures direct compatibility with legacy TTL signal levels while maintaining CMOS power efficiency and noise immunity (NIL/NIH = 30% of VCC).
Operation relies on positive-going clock transitions to latch J/K states; asynchronous S and R override clock action and force Q high (set) or Q low (reset) regardless of CP timing. Simultaneous assertion of both S and R yields defined high outputs, but simultaneous deassertion results in metastable output behavior per truth table specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | HCT: TTL-compatible inputs, CMOS outputs, 4.5–5.5V operation |
| Max Clock Frequency | 54 MHz at VCC = 5V, CL = 15pF - supports high-speed synchronous logic in control registers |
| Propagation Delay (CP→Q) | 17 ns typical at 5V/15pF - enables precise timing alignment in pipeline stages |
| Input Voltage Thresholds | VIL ≤ 0.8V (max), VIH ≥ 2.0V (min) - ensures robust interfacing with 5V TTL drivers |
| Operating Temperature | -55°C to +125°C - qualified for aerospace, defense, and under-hood automotive applications |
| Supply Current (ICC) | 4 µA typical (25°C), 80 µA max (-55°C to +125°C) - enables ultra-low static power in battery-backed systems |
| Output Drive | ±4 mA at VCC = 4.5V - sufficient to drive 10 LSTTL loads without buffering |
Pinout & Package
CD74HCT109M96 is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27 mm pitch, JEDEC MS-012AC compliant, moisture sensitivity level 1 (260°C reflow compatible), and RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1R / 2R (Active-Low Reset) | Asynchronous reset: forces Q = 0, Q̅ = 1 independent of clock |
| 2, 14 | 1J / 2J (Data Input) | J input controls toggle/no-change behavior on next CP rising edge |
| 3, 13 | 1K / 2K (Data Input) | K input complements J function: determines whether Q toggles or holds |
| 4, 12 | 1CP / 2CP (Clock) | Positive-edge-triggered clock input; latches J/K states at rising transition |
| 5, 11 | 1S / 2S (Active-Low Set) | Asynchronous set: forces Q = 1, Q̅ = 0 independent of clock |
| 6, 10 | 1Q / 2Q (True Output) | Non-inverted registered output; fanout capable of driving 10 LSTTL loads |
| 7 | GND | Ground reference for all logic and power domains |
| 8 | 1Q̅ / 2Q̅ (Complement Output) | Inverted output paired with Q; essential for differential signaling or feedback paths |
| 16 | VCC | Positive supply rail (4.5–5.5V); powers both flip-flops and internal logic |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Set/Reset | Enables immediate state initialization or forced clear without waiting for clock edge |
| Schmitt-trigger clock inputs | Improves noise immunity on CP lines in electrically noisy environments (e.g., motor drives) |
| Wide temperature range | Supports deployment in extreme environments including military avionics and downhole instrumentation |
| CMOS input leakage ≤1 µA | Minimizes loading on upstream drivers and preserves signal integrity in high-impedance nodes |
| Low dynamic power dissipation | CPD = 33 pF enables energy-efficient operation in portable or thermally constrained systems |
Applications
| Industrial PLC Sequencing | Digital Power Supply Control |
|---|---|
Use Scenario: Implementing finite-state machine logic for multi-step motor start/stop sequences in programmable logic controllers. IC Role / Device Role / Timing Role: Dual flip-flop provides two independent state bits; asynchronous S/R allows emergency halt or reset without clock dependency. Use Value: Guaranteed -55°C to +125°C operation ensures reliability in uncontrolled cabinet environments; 54MHz fMAX supports fast cycle times in real-time motion control. | Use Scenario: Generating synchronized PWM enable/disable signals and fault latching in isolated DC-DC converter modules. IC Role / Device Role / Timing Role: One flip-flop captures overcurrent interrupt (via S input), second stores soft-start completion status (via CP/J/K). Use Value: TTL-compatible inputs interface directly with comparator outputs; low ICC (<80 µA) avoids burdening auxiliary bias rails. |
| Avionics Data Bus Interface | Test Equipment Pattern Generation |
Use Scenario: Managing handshake protocol timing between ARINC 429 transceivers and microcontroller peripherals. IC Role / Device Role / Timing Role: Acts as a synchronous synchronizer for asynchronous request/acknowledge signals across clock domains. Use Value: Balanced tPLH/tPHL delays (17 ns typ.) minimize skew between Q and Q̅, critical for glitch-free bus arbitration. | Use Scenario: Building deterministic test pattern generators for IC functional validation using fixed J/K configurations. IC Role / Device Role / Timing Role: Configured as toggle (J=K=1) or hold (J=K=0) flip-flops to produce repeating binary sequences on Q outputs. Use Value: Schmitt-trigger CP inputs reject noise-induced false triggering during high-speed pattern switching; SOIC-16 tape-and-reel supports automated tester board assembly. |
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 |
|---|---|---|---|
| SN74HCT109DR | Same HCT logic family, identical pinout, but rated only for -40°C to +85°C commercial range | Not suitable for extended temperature deployments requiring -55°C or +125°C operation | Select when cost-sensitive commercial designs do not require military-grade thermal performance |
| CD74HC109M96 | Same package and pinout, but HC variant: 2V–6V supply, higher VIH/VIL thresholds (VIH ≥ 3.15V @ 4.5V), no TTL compatibility | Requires CMOS-level input drivers; unsuitable for direct replacement in TTL-driven systems | Choose for mixed-voltage systems or where wider supply range justifies redesign of input interface |
Compared with SN74HCT109DR, CD74HCT109M96 offers extended temperature qualification and identical AC/DC specs; compared with CD74HC109M96, it provides guaranteed LSTTL input compatibility at the cost of narrower supply range-making CD74HCT109M96 the sole choice for legacy 5V TTL integration without level-shifting.
Availability
CD74HCT109M96 is available at Aetrix Electronics and suitable for industrial automation, aerospace data acquisition, and high-reliability power conversion systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74HCT109M96 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The CD74HCT109M96 belongs to TI's legacy high-speed CMOS logic portfolio, designed specifically to replace bipolar TTL in mission-critical systems while preserving pin compatibility, signal integrity, and thermal robustness.
FAQ
What is the maximum clock frequency supported by CD74HCT109M96?
The CD74HCT109M96 supports a maximum clock frequency of 54 MHz under specified conditions: VCC = 5V, CL = 15pF, TA = 25°C. At full temperature range (-55°C to +125°C), the guaranteed minimum fMAX is 18 MHz per switching specifications. This makes CD74HCT109M96 suitable for medium-speed synchronous logic in control and interface applications where deterministic timing is required.
Does CD74HCT109M96 support direct connection to standard TTL outputs?
Yes, CD74HCT109M96 is explicitly designed for direct LSTTL input compatibility: its VIH threshold is ≥2.0V (min) and VIL is ≤0.8V (max) at VCC = 4.5V–5.5V. This allows seamless interfacing with legacy 5V TTL gates, microcontrollers, and peripheral drivers without external level shifters-preserving signal integrity and reducing BOM count in retrofitted or mixed-technology systems.
What happens when both Set and Reset inputs are asserted simultaneously on CD74HCT109M96?
When both S and R inputs are low simultaneously on CD74HCT109M96, both Q and Q̅ outputs are forced high-a defined, predictable condition documented in the truth table. However, if both S and R transition from low to high at the same time, the resulting output state is unpredictable and unstable per datasheet Note 1; designers must avoid this race condition using external synchronization or priority encoding.
Is CD74HCT109M96 available in tape-and-reel packaging?
Yes, CD74HCT109M96 is supplied in tape-and-reel format with 2500 units per reel, designated by the "96" suffix per TI's ordering convention. The SOIC-16 package meets JEDEC standard dimensions and is compatible with automated pick-and-place equipment, supporting high-volume manufacturing of industrial and defense-grade assemblies.
What is the power consumption profile of CD74HCT109M96 at 5V operation?
At VCC = 5V and TA = 25°C, CD74HCT109M96 exhibits a typical quiescent current (ICC) of 4 µA and a maximum of 40 µA. Dynamic power is governed by CPD = 33 pF; total power dissipation follows PD = CPD × VCC² × fi + Σ(CL × fo). This enables ultra-low standby power in always-on monitoring circuits while maintaining responsiveness during active sequencing.
CD74HCT109M96 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Set(Preset) and Reset
- Type:
- JK Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 54 MHz
- Max Propagation Delay @ V, Max CL:
- 40ns @ 4.5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 10 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CD74HCT109M96 FAQ
1.How can I place an order for CD74HCT109M96 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HCT109M96 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 CD74HCT109M96 reliable?
The price and inventory of CD74HCT109M96 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HCT109M96 is usually 5 days.
3.What payment methods are accepted for CD74HCT109M96?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HCT109M96 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HCT109M96?
CD74HCT109M96 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HCT109M96 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 CD74HCT109M96?
For technical support, including CD74HCT109M96 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HCT109M96 requirements.
6.How does Aetrix verify that CD74HCT109M96 is sourced from the original manufacturer or authorized distributors?
All CD74HCT109M96 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 CD74HCT109M96 meets industry standards.
7.What is the process for return or replacement of CD74HCT109M96?
All CD74HCT109M96 units undergo pre-shipment inspection (PSI). If there is an issue with CD74HCT109M96, 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 CD74HCT109M96 part is unused and in its original packaging.
Return procedure for CD74HCT109M96:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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