CD74HC109E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74HC109E is a High-Speed CMOS Dual Positive-Edge-Triggered J-K Flip-Flop IC from Texas Instruments, featuring asynchronous Set and Reset inputs, 20 MHz maximum clock frequency, and a 16-pin PDIP through-hole package. Available from authorized distributors with worldwide shipping and competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC109E 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
Key Features
- Dual positive-edge-triggered J-K flip-flops with independent asynchronous set and reset inputs provide flexible sequential logic building blocks in a single 16-pin IC
- 20 MHz maximum clock frequency in the HC/UH high-speed CMOS family enables reliable operation in medium-speed counters, registers, and state machine designs
- 6 mA output low current drive and 50 pF load capacitance specification makes the CD74HC109E compatible with standard HC-series CMOS and TTL-level logic inputs
Applications
The CD74HC109E is commonly used in sequential logic designs such as binary counters, shift registers, frequency dividers, and state machines in microcontroller-based and discrete digital systems. Its dual-channel J-K flip-flop architecture with set/reset makes it useful in edge-detection circuits, toggle switches, and clock gating logic in industrial control and embedded applications.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T16 |
| 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 | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| 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 | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 24MHz |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum clock frequency of the CD74HC109E?
The CD74HC109E supports a maximum clock frequency of 20 MHz (20,000,000 Hz) at nominal supply voltage. This makes it suitable for medium-speed sequential logic applications such as frequency division, binary counting, and state machine implementations in CMOS digital systems.
Does the CD74HC109E have asynchronous set and reset inputs?
Yes, the CD74HC109E includes asynchronous Set and Reset inputs on each flip-flop, allowing the output to be forced to a known state independently of the clock signal. This is essential for initializing sequential circuits on power-up or resetting the state machine during normal operation.
What package does the CD74HC109E come in?
The CD74HC109E is available in a 16-pin plastic dual-in-line (PDIP) through-hole package, designated R-PDIP-T16. This classic through-hole format is ideal for prototyping on breadboards, perfboards, and in lab educational setups, as well as direct replacement in legacy TTL and CMOS digital logic boards.
Is the CD74HC109E RoHS compliant?
Yes, the CD74HC109E is Pb-free (lead-free) with a JESD-609 code of e4, confirming compliance with RoHS environmental regulations. With a YTEOL value of 15, it remains an actively manufactured and available product suitable for both new designs and repair of existing electronic equipment.
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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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