CD74HC390E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments CD74HC390E is a high-speed CMOS dual decade ripple counter with divide-by-2 and divide-by-5 functions, 50 pF load capacitance, in a 16-pin DIP package for through-hole PCB assembly. From $0.60 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC390E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4029(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual decade (÷10) ripple counter with independent divide-by-2 and divide-by-5 stages per section
- HC/UH CMOS family with 50 pF load capacitance for reliable high-speed clocking
- 16-pin DIP (R-PDIP-T16) through-hole package ideal for prototyping and legacy board designs
Applications
The CD74HC390E is used in frequency division and digital counting circuits where two independent decade counting stages are needed in a single package. Its divide-by-2 and divide-by-5 sections can be cascaded internally or externally to achieve ÷10, ÷50, ÷100, or custom division ratios for clock generation and event counting in industrial timers and educational electronics. The through-hole DIP package makes it an accessible choice for prototyping, lab experiments, and retrofitting legacy systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | DIVIDE BY 2 AND DIVIDE BY 5 FUNCTIONS |
| Count Direction | UP |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | NO |
| Logic IC Type | DECADE COUNTER |
| Max Frequency@Nom-Sup | 20000000Hz |
| Max I(ol) | 0.0052A |
| Mode of Operation | ASYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 2 |
| 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) | 0.08mA |
| Prop. Delay@Nom-Sup | 52ns |
| Propagation Delay (tpd) | 550ns |
| Qualification Status | Not Qualified |
| 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 |
| ## CD74HC390E 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC390E:
suggested
suggested
suggested
suggested
suggested
suggested
Decade Counter, HC/UH Series, Asynchronous, Negative Edge Triggered, 4-Bit, Up Direction, CMOS, PDIP16
Frequently Asked Questions
How are the divide-by-2 and divide-by-5 sections used together in the CD74HC390E?
Each of the two counter sections in the CD74HC390E has a separate divide-by-2 flip-flop and a divide-by-5 stage; connecting the divide-by-2 output to the divide-by-5 input creates a ÷10 decade counter, while keeping them separate allows independent ÷2 and ÷5 frequency division from a single 16-pin IC.
What clock frequencies can the CD74HC390E handle at a 50 pF load?
Operating in the HC CMOS family, the CD74HC390E is rated for a 50 pF load capacitance and can typically toggle at clock frequencies up to approximately 30 MHz at 5 V supply, making it suitable for medium-speed digital frequency division in microcontroller peripheral clocking and timer circuits.
When would a designer choose the CD74HC390E over a single-section decade counter like the CD74HC390?
Designers choose the CD74HC390E when two independent decade counting or frequency division stages are needed simultaneously, saving board space and component count compared to using two separate ICs, for example in dual-channel event counting, BCD display driving, or cascaded ÷100 divider chains.
Is the CD74HC390E suitable for prototyping and hobbyist use given its package type?
Yes, the CD74HC390E comes in a 16-pin DIP through-hole package (R-PDIP-T16) that plugs directly into breadboards and perfboards, making it especially convenient for electronics students, hobbyists, and engineers validating decade counter designs before committing to surface-mount alternatives.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1250 | $1.13 |
| 14+ | $0.4275 | $5.98 |
| 100+ | $0.4163 | $41.63 |
| 1000+ | $0.4029 | $402.90 |
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