CD4520BPWRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD4520BPWRE4 is a CMOS dual 4-bit binary up-counter IC with gated clock and Schmitt trigger clock input in a 16-pin TSSOP package. It features load/preset input, up to 1.5 MHz maximum frequency, and 50 pF load capacitance for reliable counting applications. Available from Texas Instruments with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD4520BPWRE4 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 binary up-counter with gated clock input allows two separate counting channels in a single 16-pin TSSOP package, doubling counting capacity without additional ICs
- Schmitt trigger on clock input provides excellent noise immunity and clean clock signal conditioning, enabling reliable counting even in electrically noisy industrial environments
- CMOS 4000-series family with load/preset input and 1.5 MHz maximum operating frequency offers low power consumption and flexible initialization for event counting and frequency division circuits
Applications
The CD4520BPWRE4 is used in event counting, frequency division, and time-base generation circuits in industrial control, consumer electronics, and digital instrumentation. Its dual counter architecture and gated clock inputs make it ideal for building up/down counters with direction control when paired with external gates, or for independent dual-channel frequency counting. The Schmitt trigger clock input enhances reliability in noisy environments such as motor control boards, relay panels, and field instrumentation.
Specifications
| 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 | YES |
| Logic IC Type | BINARY COUNTER |
| Max Frequency@Nom-Sup | 1500000Hz |
| Max I(ol) | 0.004200000000000001A |
| 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 | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Prop. Delay@Nom-Sup | 560ns |
| 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 |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD4520BPWRE4:
Counter, 4000/14000/40000 Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, PDSO16
Counter, 4000/14000/40000 Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, PDSO16
Frequently Asked Questions
How many counter channels does the CD4520BPWRE4 have and what is the count direction?
The CD4520BPWRE4 contains two independent 4-bit binary counters, each counting in the upward (incrementing) direction. The dual counter configuration allows two separate counting operations in a single 16-pin TSSOP package, useful for dual-channel event counting, cascaded 8-bit counting, or independently controlling two subsystems with separate count requirements.
What is the Schmitt trigger clock input feature of the CD4520BPWRE4?
The Schmitt trigger on the clock input of the CD4520BPWRE4 provides hysteresis, meaning the input switches at different voltage thresholds for rising and falling edges. This feature rejects slow or noisy input transitions that could cause multiple counting errors, making the device reliable in environments with electrical noise such as industrial control panels, motor drive systems, and long cable runs.
What is the maximum operating frequency of the CD4520BPWRE4?
The CD4520BPWRE4 operates at a maximum frequency of 1.5 MHz (1,500,000 Hz) at nominal supply voltage with a 50 pF load capacitance. This frequency range makes it suitable for low- to medium-speed counting and frequency division applications in instrumentation, consumer electronics timers, and digital control circuits where high-speed counting is not required.
Does the CD4520BPWRE4 have a preset or load input?
Yes, the CD4520BPWRE4 includes a load/preset input that allows the counter to be asynchronously reset or preset to a specific count value. This feature enables programmable counting modulus and counter initialization, which is useful in applications such as programmable frequency dividers, timed event controllers, and position tracking circuits that need to start counting from a defined initial value.
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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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