CD4520BE Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments CD4520BE is a dual 4-bit binary up-counter with gated clock and Schmitt trigger clock inputs, operating from 3 V to 15 V in a 16-pin DIP package. From $0.45, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD4520BE Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1294(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 CD4520BE?
- Dual independent 4-bit binary up-counters in a single 16-pin DIP, replacing two separate counter ICs and halving package count in frequency divider chains
- Schmitt trigger on the clock input rejects slow-rise or noisy clock edges, enabling direct connection to RC oscillators and mechanical switch inputs without external conditioning
- 3 V to 15 V supply range covers battery (9 V), 5 V TTL-compatible, and 12 V industrial control systems within a single CD4000 CMOS family device
What is CD4520BE used for?
The CD4520BE is used in frequency divider chains, event counters, and timer circuits in industrial automation panels, consumer appliances, and educational electronics labs where two independent 4-bit counters are needed in a compact through-hole package. Its Schmitt trigger clock input allows it to count pulses directly from slow sensors, rotary encoders, or debounced switches without external waveform shaping circuitry. Cascading two CD4520BE devices creates an 8-bit or larger counter suitable for longer time-base or position-tracking applications.
What are the specifications of CD4520BE?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | GATED CLOCK; SCHMITT TRIGGER ON CLOCK INPUT |
| Count Direction | UP |
| Family | 4000/14000/40000 |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | NO |
| Logic IC Type | BINARY 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 | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| 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 | 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 | 4MHz |
| ## CD4520BE 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 CD4520BE datasheet?
CD4520BE Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD4520BE?
Compatible alternatives and drop-in replacements for CD4520BE:
suggested
suggested
suggested
suggested
suggested
Binary Counter, 4000/14000/40000 Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, CDIP16
Binary Counter, 4000/14000/40000 Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, PDIP16
Binary Counter, 4000/14000/40000 Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, CDIP16
Frequently Asked Questions
What does the Schmitt trigger on the CD4520BE clock input provide compared to a standard CMOS clock input?
The Schmitt trigger adds approximately 0.5 V to 1.5 V of hysteresis to the clock input threshold, allowing the CD4520BE to accept slowly rising or noisy signals from RC oscillators, open-collector sensors, or mechanical contacts without spurious counting, eliminating the need for an external Schmitt buffer IC in most practical event-counting circuits.
How can two CD4520BE counters be cascaded to form an 8-bit counter?
Each of the two independent 4-bit counters inside the CD4520BE produces a carry-out at the Q4 output; connecting Q4 of the first counter to the CLOCK input of the second counter chains both 4-bit stages into an 8-bit ripple counter, and a second CD4520BE package then extends the chain to 16 bits covering count ranges up to 65,535.
What supply voltage range does the CD4520BE support, and how does this compare to HC-family counters?
The CD4520BE operates from 3 V to 15 V, which is broader than the 2 V to 6 V range of HC-family counters, making it the preferred choice for designs powered from 9 V batteries or 12 V industrial rails, while HC-family counters are faster and preferred in 5 V systems where propagation delay below 20 ns is required.
Can the CD4520BE count pulses from a mechanical rotary switch directly?
Yes. The on-chip Schmitt trigger clock input handles the slow edges and contact bounce characteristic of mechanical rotary switches; combined with a simple RC debounce network of approximately 10 kΩ and 100 nF, the CD4520BE reliably counts switch actuation events up to several hundred Hz without requiring a separate Schmitt-trigger or one-shot IC.
Is the CD4520BE in a 16-pin DIP suitable for breadboard prototyping and lab experiments?
Yes, the 16-pin 0.3-inch-row DIP package fits standard breadboards and IC sockets directly, and the 3 V to 15 V supply tolerance means it works from a 9 V bench supply or battery without a voltage regulator, making it a convenient choice for digital electronics courses demonstrating binary counting, frequency division, and cascaded counter chains.
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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+ | $0.6900 | $0.69 |
| 25+ | $0.4500 | $11.25 |
| 100+ | $0.4163 | $41.63 |
| 250+ | $0.3600 | $90.00 |
| 1495+ | $0.1339 | $200.18 |
| 1935+ | $0.1294 | $250.39 |
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