CD4521BM96 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD4521BM96 is a CMOS 24-stage binary ripple counter and frequency divider from the 4000-series logic family, providing tapped outputs from the last 7 stages for flexible divide ratios. It operates over a wide voltage range in a 16-pin SOIC package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD4521BM96 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2623(MOQ 250)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 24-stage binary counter with outputs available from the last 7 stages (stages 18–24) enables divide-by ratios from 262,144 to 16,777,216
- Wide CMOS supply voltage range (3 V to 15 V typical for 4000-series) allows direct interfacing with both 5 V TTL and 3.3 V logic systems
- Low quiescent power consumption inherent to CMOS technology makes it ideal for battery-powered clock divider and timing applications
- Upward count direction with ripple-carry architecture provides a simple, reliable frequency division solution with minimal external components
Applications
The CD4521BM96 is widely used as a crystal oscillator frequency divider to generate sub-Hz timing references from standard MHz oscillator crystals in real-time clocks and long-interval timers. It also serves as a programmable clock prescaler in microcontroller-based systems where a lower-frequency clock is derived from a high-speed system oscillator. The device is additionally used in industrial timers, pulse counters, and sequential event generators where large integer divide ratios are required.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | OUTPUTS FROM LAST 7 STAGES AVAILABLE |
| 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 | BINARY COUNTER |
| Max Frequency@Nom-Sup | 2000000Hz |
| Max I(ol) | 0.0024A |
| Mode of Operation | ASYNCHRONOUS |
| Number of Bits | 24 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 3mA |
| Prop. Delay@Nom-Sup | 4500ns |
| Propagation Delay (tpd) | 12000ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | NEGATIVE EDGE |
| fmax-Min | 6.5MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD4521BM96:
Binary Counter, 4000/14000/40000 Series, Asynchronous, Negative Edge Triggered, 24-Bit, Up Direction, CMOS, PDSO16
Binary Counter, 4000/14000/40000 Series, Asynchronous, Negative Edge Triggered, 24-Bit, Up Direction, CMOS, PDSO16
Binary Counter, 4000/14000/40000 Series, Asynchronous, Negative Edge Triggered, 24-Bit, Up Direction, CMOS, PDSO16
Frequently Asked Questions
What divide ratios are available from the CD4521BM96?
The CD4521BM96 provides output taps from stages 18 through 24, corresponding to divide-by ratios of 262,144 (2^18) through 16,777,216 (2^24). These large division factors are ideal for generating very low frequency signals from standard MHz crystal oscillators in timing and clock generation circuits.
What supply voltage range does the CD4521BM96 support?
As a member of the CMOS 4000-series family, the CD4521BM96 operates over a wide supply voltage range, typically 3 V to 15 V, making it compatible with 3.3 V, 5 V, and 12 V logic systems. This versatility simplifies integration into both legacy and modern low-voltage designs.
What is the package type of the CD4521BM96?
The CD4521BM96 is housed in a 16-pin SOIC (M96 suffix indicates the SOIC package on tape and reel). The surface-mount SOIC package is suitable for automated PCB assembly and provides a smaller footprint than through-hole DIP alternatives while remaining easy to hand-solder for prototyping.
Can the CD4521BM96 be used with a 32.768 kHz watch crystal?
Yes, the CD4521BM96 can divide a 32.768 kHz crystal oscillator output. Using the stage-15 equivalent or combining it with other dividers produces 1 Hz and other useful sub-second timing signals. However, for a 1 Hz output from 32.768 kHz, a 15-stage divider (like the CD4521 used at stage 15) or a CD4060 is more commonly used, and the CD4521 covers even larger division factors.
What is the difference between the CD4521 and the CD4060?
The CD4521BM96 is a 24-stage binary counter with no built-in oscillator, requiring an external clock source, and provides taps from the last 7 stages (stages 18–24). The CD4060 is a 14-stage binary counter with an integrated oscillator/inverter circuit, providing taps from stages 4–10 and 12–14. The CD4521 is preferred when a very large divide ratio is needed from an existing clock signal, while the CD4060 integrates the oscillator for standalone timer applications.
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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 |
|---|---|---|
| 250+ | $0.3161 | $79.02 |
| 500+ | $0.3018 | $150.91 |
| 1000+ | $0.2953 | $295.29 |
| 2500+ | $0.2850 | $712.50 |
| 5000+ | $0.2780 | $1390.00 |
| 12500+ | $0.2623 | $3278.75 |
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