CD4518BPWE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD4518BPWE4 is a dual 4-bit synchronous decade up-counter IC from Texas Instruments in the 4000-series CMOS logic family, featuring gated clock inputs with Schmitt trigger on clock for noise immunity and a 50pF load capacitance rating in a 16-pin TSSOP package. Both counters operate independently and support BCD decade counting for frequency division and counting applications. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD4518BPWE4 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 independent 4-bit decade up-counter with gated clock inputs for flexible synchronous counting operations
- Schmitt trigger on clock input provides superior noise immunity and clean triggering from slow or noisy clock signals
- 50pF load capacitance rating supports reliable operation across the 4000/14000/40000 CMOS logic family voltage range
- Compact 16-pin TSSOP package with RoHS compliant lead-free construction for modern surface mount assembly
Applications
The CD4518BPWE4 is widely used in digital counting and frequency division circuits for industrial control systems, instrumentation, and consumer electronics. Its dual decade counter architecture enables cascaded multi-digit BCD counting in displays, timers, and event counters. The Schmitt trigger clock input makes it particularly robust in electrically noisy environments such as motor control panels and factory automation equipment.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | GATED CLOCK; SCHMITT TRIGGER ON CLOCK INPUT |
| Count Direction | UP |
| Family | 4000/14000/40000 |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | NO |
| Logic IC Type | DECADE COUNTER |
| Max Frequency@Nom-Sup | 1500000Hz |
| Max I(ol) | 0.0015A |
| Mode of Operation | SYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.03mA |
| Prop. Delay@Nom-Sup | 230ns |
| Propagation Delay (tpd) | 560ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 18V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 4MHz |
| 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 | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD4518BPWE4:
Counter, 4000/14000/40000 Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, PDSO16
Frequently Asked Questions
What counting mode does the CD4518BPWE4 support?
The CD4518BPWE4 is a dual 4-bit BCD decade up-counter, counting from 0 to 9 in binary coded decimal format. It features gated clock inputs allowing flexible control of each of the two independent counter sections for cascaded or parallel counting applications.
What is the advantage of the Schmitt trigger on the clock input of CD4518BPWE4?
The Schmitt trigger on the clock input of the CD4518BPWE4 provides hysteresis that rejects noise and ensures reliable triggering even with slow-rising or noisy clock signals, making the device well-suited for industrial environments with electrical interference.
What package does the CD4518BPWE4 come in?
The CD4518BPWE4 is available in a 16-pin TSSOP (Thin Shrink Small Outline Package) with a load capacitance rating of 50pF. It is RoHS compliant and lead-free (JESD-609 e4 code), making it compatible with modern surface mount assembly processes.
What logic family does the CD4518BPWE4 belong to?
The CD4518BPWE4 belongs to the 4000/14000/40000 series CMOS logic family, which operates over a wide supply voltage range. This family is known for low power consumption and broad compatibility with both TTL and CMOS logic interfaces.
Can the CD4518BPWE4 counters be cascaded?
Yes, the two independent decade counter sections of the CD4518BPWE4 can be cascaded to form multi-digit BCD counters. By connecting the carry output of one counter to the clock input of the next, designers can build two-digit (0-99) or larger counting chains for timers and frequency dividers.
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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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