CD74HC73E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74HC73E is a dual J-K flip-flop IC in the High-Speed CMOS HC/UH logic family, operating up to 20 MHz with 6 mA output drive in a 14-pin DIP package. It provides 2 independent clocked flip-flop bits for reliable sequential logic in 2V to 6V CMOS digital systems.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC73E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3537(MOQ 1)
- 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 CD74HC73E?
- Dual J-K flip-flop with 2 independent bits, supporting clear and clock inputs for versatile synchronous and asynchronous sequential logic
- 20 MHz maximum clock frequency with 50 pF load capacitance, enabling reliable operation in mid-speed digital counter and shift-register designs
- Wide 2V to 6V CMOS supply range with 6 mA output drive current, providing compatibility across mixed-voltage digital systems in a compact 14-pin DIP
What is CD74HC73E used for?
The CD74HC73E is used in digital counter circuits, frequency dividers, and state machine implementations where J-K flip-flop behavior with independent clear control is required. Its 20 MHz maximum frequency and 2V to 6V supply range make it suitable for microcontroller companion logic, signal synchronization stages, and clock division networks in embedded control boards. Educational and prototyping environments also frequently employ the 14-pin DIP format for breadboard-based sequential logic experiments.
What are the specifications of CD74HC73E?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | J-K 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 | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 40ns |
| Propagation Delay (tpd) | 240ns |
| 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 | NEGATIVE EDGE |
| fmax-Min | 24MHz |
| ## CD74HC73E Alternates Showing results | Image |
| 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 |
Where can I find the CD74HC73E datasheet?
CD74HC73E Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC73E?
Compatible alternatives and drop-in replacements for CD74HC73E:
Flip-Flop, HC/UH Series, 2-Func, Negative Edge Triggered, 2-Bit, Complementary Output, CMOS, PDIP14
Frequently Asked Questions
What is the maximum clock frequency the CD74HC73E can reliably toggle at with a 50 pF load?
The CD74HC73E is specified for a maximum clock frequency of 20 MHz at nominal supply voltage with a 50 pF load capacitance. This makes it suitable for mid-speed counter, divider, and synchronous sequential logic applications in 5V CMOS systems, though exceeding this rate risks setup-time violations and output glitches.
How does the CD74HC73E dual J-K flip-flop support counter and frequency-divider designs compared to D-type flip-flops?
Unlike D-type flip-flops, J-K flip-flops have both J and K toggle inputs, allowing toggle mode by tying J and K high to create a divide-by-2 frequency divider per stage. The CD74HC73E provides 2 such stages in one 14-pin DIP package, so a designer can build a 2-bit ripple counter with no external logic, operating up to 20 MHz and driving 6 mA output loads.
Can the CD74HC73E operate from a 3.3V rail in mixed-voltage embedded systems alongside 5V TTL peripherals?
The CD74HC73E supports supply voltages from 2V to 6V, so it operates correctly from a 3.3V rail. However, its HC-family inputs require CMOS-level thresholds near VCC/2 (approximately 1.65V at 3.3V), which means 5V TTL outputs may not be recognized as a valid logic-high without a level-shifting buffer between the 5V TTL device and the CD74HC73E inputs.
What output drive current does the CD74HC73E provide, and how many standard HC loads can one output fan out to?
The CD74HC73E delivers a maximum output low current (IOL) of 6 mA, which can drive approximately 50 standard HC-series CMOS inputs in fanout. This 6 mA drive capability is sufficient for directly switching indicator LEDs through a current-limiting resistor or for feeding long PCB traces with controlled 50-ohm impedance without external buffer stages.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7200 | $0.72 |
| 25+ | $0.6610 | $16.53 |
| 80+ | $0.6298 | $50.38 |
| 1000+ | $0.4735 | $473.50 |
| 10000+ | $0.4222 | $4222.00 |
| 100000+ | $0.3537 | $35370.00 |
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