CD4521BE Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

Name: CD4521BE
Brand: Texas Instruments
SKU: CD4521BE
Availability: InStock

Texas Instruments CD4521BE is a CMOS 24-stage frequency divider with supply range 3 V to 18 V, 50 pF load capability, and 7 tapped output stages in a 16-pin PDIP. From $0.60 in stock worldwide shipping.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

CD4521BEDual-In-Line Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Dual-In-Line Packages
Pin Count: 16
Lifecycle: ACTIVE
Datasheet: CD4521BE Datasheet PDF
Category: Integrated Circuit
Price: From $0.2337(MOQ 316)
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 CD4521BE?

Wide supply voltage from 3 V to 18 V enabling use in 5 V TTL, 9 V battery, and 12 V industrial systems
24-stage binary counter with outputs from the last 7 stages for flexible frequency division ratios
50 pF load capacitance tolerance and CMOS logic compatibility for low-power clocking circuits

What is CD4521BE used for?

CD4521BE is commonly used as a programmable frequency divider in clocks, timers, and oscillator prescaler circuits requiring a wide supply range. Its 7 accessible output stages allow selectable division ratios from 2^17 to 2^24, suiting long-interval timing in industrial controllers and medical alarm systems. The 16-pin DIP form factor enables rapid prototyping and through-hole production without special tooling.

What are the specifications of CD4521BE?

Pbfree Code	Yes
YTEOL	15
Additional Feature	OUTPUTS FROM LAST 7 STAGES AVAILABLE
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	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	DIP16,.3
Package Shape	RECTANGULAR
Package Style	IN-LINE
Packing Method	TUBE
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	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	6.5MHz
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 CD4521BE datasheet?

CD4521BE Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for CD4521BE?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What division ratios are accessible on CD4521BE and which stages provide outputs?

CD4521BE is a 24-stage ripple-carry binary counter, with the last 7 stages providing tap outputs corresponding to division ratios of 2^17 through 2^24, ranging from 131072 to 16777216. This enables very long timing intervals from a standard crystal oscillator input at frequencies up to several megahertz.

Can CD4521BE operate in both 5 V microcontroller and 12 V industrial systems on the same design?

Yes, CD4521BE supports a supply voltage range of 3 V to 18 V, making it directly compatible with 5 V CMOS logic and 12 V industrial power rails. Output levels track the supply, so no level-shifting is required when interfacing to both 5 V microcontrollers and 12 V relay drivers in mixed-voltage industrial panels.

How does the load capacitance specification of CD4521BE affect oscillator circuit design?

The device is rated for 50 pF load capacitance on its outputs, which sets the maximum PCB trace and input capacitance budget. Exceeding 50 pF increases propagation delay and reduces maximum clock frequency. For high-speed prescaler designs above 1 MHz, keeping trace length under 10 cm and using buffer stages is recommended to stay within the 50 pF limit.

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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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AvailabilityIn Stock

Reference Price (USD)

From $0.2337

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
316+	$0.9500	$300.20
745+	$0.2696	$200.85
960+	$0.2606	$250.18
1285+	$0.2337	$300.30

pcs

Unit price: $0.9500 · Total: $300.20

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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CD4521BE Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

What are the key features of CD4521BE?

What is CD4521BE used for?

What are the specifications of CD4521BE?

Compliance & Regulatory

Where can I find the CD4521BE datasheet?

What are equivalent replacements for CD4521BE?

Frequently Asked Questions

What division ratios are accessible on CD4521BE and which stages provide outputs?

Can CD4521BE operate in both 5 V microcontroller and 12 V industrial systems on the same design?

How does the load capacitance specification of CD4521BE affect oscillator circuit design?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

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