CD74HC4518E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments CD74HC4518E is a dual BCD up-counter with synchronous reset, operating from 2 V to 6 V with 50 pF load capacitance and positive or negative edge trigger in a 16-pin DIP package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC4518E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9486(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 CD74HC4518E?
- Dual independent BCD decade up-counters with synchronous clear and both positive- and negative-edge clock triggering for flexible timing circuit design
- Wide supply voltage range of 2 V to 6 V with 50 pF load capacitance tolerance, compatible with HC and CMOS logic families across industrial temperature ranges
- 16-pin PDIP through-hole package with decade count sequence ideal for frequency division, event counting, and BCD-to-display driving in legacy and prototype designs
What is CD74HC4518E used for?
The CD74HC4518E is used in frequency division and event counting circuits where BCD output directly drives 7-segment decoders or microcontroller BCD inputs without additional decoding logic. Its dual independent counter sections make it suitable for cascaded multi-digit decimal counters in industrial timers, panel meters, and process control equipment. The 2 V to 6 V supply range and through-hole DIP format also make it a convenient choice for educational lab kits and prototype counting circuits.
What are the specifications of CD74HC4518E?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | NEGATIVE EDGE TRIGGER TYPE ALSO POSSIBLE |
| 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 | SYNCHRONOUS |
| 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 | 51ns |
| Propagation Delay (tpd) | 360ns |
| 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 | 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 |
Where can I find the CD74HC4518E datasheet?
CD74HC4518E Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC4518E?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the counting sequence and maximum count modulus of the CD74HC4518E?
The CD74HC4518E contains 2 independent BCD (Binary-Coded Decimal) up-counters, each cycling through 10 states from 0 to 9 before resetting, giving a modulus of 10. At a 5 V supply with a 50 pF load, the clock frequency can reach up to 40 MHz, enabling decade division of signals into the tens-of-MHz range.
Can the CD74HC4518E be triggered on both rising and falling clock edges, and how is that configured?
Yes. Each counter in the CD74HC4518E supports both positive-edge triggering via the CP input and negative-edge triggering via the CE enable pin. Applying the clock to CP with CE held HIGH gives rising-edge counting, while applying the clock to CE with CP held LOW gives falling-edge counting. Both modes operate from 2 V to 6 V supply.
How does the CD74HC4518E compare to binary counters like 74HC163 for a BCD display application?
The CD74HC4518E outputs directly in BCD (4-bit binary-coded decimal with states 0–9), eliminating the need for modulo-10 decode logic required when using a 4-bit binary counter like the 74HC163 that counts to 15. For driving a 7-segment decoder such as the 74HC4511 at 5 V, the CD74HC4518E reduces component count by one IC per digit and simplifies PCB routing.
What supply voltage and load conditions does the CD74HC4518E support for industrial panel meter designs?
The CD74HC4518E operates from 2 V to 6 V supply, tolerates a load capacitance of 50 pF per output, and functions across the industrial temperature range of -40°C to +85°C. These specifications support reliable operation in panel meters and industrial counters where 5 V or 3.3 V rails and ambient temperatures up to 85°C are common.
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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+ | $1.5400 | $1.54 |
| 16+ | $1.4230 | $22.77 |
| 100+ | $1.1500 | $115.00 |
| 1000+ | $1.0000 | $1000.00 |
| 100000+ | $0.9486 | $94860.00 |
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