CD74HC109ME4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments CD74HC109ME4 is a dual positive-edge-triggered J-K flip-flop with High-Speed CMOS logic in a 16-pin SOIC package, operating up to 20 MHz with 50 pF load capacitance. From $0.50, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC109ME4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74HC109ME4?
- Dual positive-edge-triggered J-K flip-flop with active-LOW preset and clear inputs for flexible state control
- High-Speed CMOS HC family supports toggle frequency up to 20 MHz at 50 pF load capacitance
- Wide supply voltage range of 2 V to 6 V enables use across 3.3 V and 5 V digital systems
- 16-pin SOIC (R-PDSO-G16) small-outline package minimizes board footprint in space-constrained designs
What is CD74HC109ME4 used for?
The CD74HC109ME4 is well-suited for digital state machines, frequency dividers, and synchronous counters in industrial control systems and embedded processors. Its dual J-K flip-flop architecture with independent preset and clear inputs makes it ideal for register-based data storage and pipeline sequencing. The 5 V CMOS compatibility also fits legacy logic interfacing in automotive electronics and communications equipment.
What are the specifications of CD74HC109ME4?
| YTEOL | 0 |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | J-KBAR FLIP-FLOP |
| Max Frequency@Nom-Sup | 20000000Hz |
| Max I(ol) | 0.006A |
| Number of Bits | 2 |
| Number of Functions | 2 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 53ns |
| Propagation Delay (tpd) | 265ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 23MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Where can I find the CD74HC109ME4 datasheet?
CD74HC109ME4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC109ME4?
Compatible alternatives and drop-in replacements for CD74HC109ME4:
J-Kbar Flip-Flop, HC/UH Series, 2-Func, Positive Edge Triggered, 2-Bit, Complementary Output, CMOS, PDSO16
Frequently Asked Questions
What is the maximum toggle frequency supported by the CD74HC109ME4?
The CD74HC109ME4 supports a maximum clock frequency of 20 MHz when driving a 50 pF load capacitance at nominal supply voltage. This makes it suitable for high-speed digital counters and state machines in embedded control systems operating up to 20 MHz.
Which supply voltage range does the CD74HC109ME4 operate across?
The CD74HC109ME4 is designed to operate across a supply voltage range of 2 V to 6 V, covering both 3.3 V and 5 V digital logic systems. This wide range allows seamless integration into mixed-voltage PCB designs without additional level-shifting components.
How many flip-flop functions are integrated in the CD74HC109ME4, and what package does it use?
The CD74HC109ME4 integrates 2 independent J-K flip-flop functions within a single 16-pin SOIC package (R-PDSO-G16). Each flip-flop provides active-LOW preset and clear inputs, enabling flexible initialization and reset in synchronous digital circuits with a compact 16-pin footprint.
In which applications is the CD74HC109ME4 a preferred choice over simpler D-type flip-flops?
The CD74HC109ME4 is preferred in designs requiring toggle, hold, set, and reset operations within a single device, such as frequency dividers and sequence controllers. Its J-K architecture with 2 independent channels handles more complex state logic than D-type flip-flops, reducing IC count in industrial automation boards running at up to 20 MHz.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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