CD4532BF3A Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD4532BF3A is a CMOS 8-to-3 line priority encoder from Texas Instruments in a 16-pin ceramic DIP package. It encodes the highest-priority active input among 8 lines into a 3-bit binary output code with 50 pF load capacitance support. Suited for interrupt management, keyboard encoding, and digital logic priority selection circuits.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD4532BF3A 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
- 8-to-3 line priority encoding automatically selects and encodes the highest-priority active input among 8 lines into a compact 3-bit binary output
- CMOS 4000-series compatibility allows operation across wide supply voltage ranges for flexible integration into diverse digital logic systems
- 16-pin ceramic DIP (CDIP) package provides hermetic sealing for enhanced reliability in high-temperature and harsh industrial environments
Applications
The CD4532BF3A is used in interrupt prioritization circuits, keyboard encoders, and digital control systems where multiple simultaneous input requests must be resolved to a single prioritized binary output. Its priority encoding logic simplifies the design of arbitration circuits in microprocessor and microcontroller systems that must handle overlapping or concurrent interrupt sources. The ceramic DIP package ensures long-term reliability in industrial and military electronics environments.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | 8 TO 3 LINE PRIORITY ENCODER |
| Family | 4000/14000/40000 |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | ENCODER |
| Max I(ol) | 0.0015A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Polarity | INVERTED |
| Package Body Material | CERAMIC, GLASS-SEALED |
| 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 | 110ns |
| Propagation Delay (tpd) | 440ns |
| Qualification Status | Not Qualified |
| Screening Level | 38535Q/M;38534H;883B |
| 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 | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD4532BF3A:
Frequently Asked Questions
What does the CD4532BF3A encode and how does priority work?
The CD4532BF3A is an 8-to-3 priority encoder that accepts 8 input lines and produces a 3-bit binary output representing the highest-priority active input. When multiple inputs are asserted simultaneously, the device automatically selects the one with the highest priority (typically the highest-numbered input), ensuring deterministic output in multi-input scenarios.
What is the package type of the CD4532BF3A?
The CD4532BF3A is housed in a 16-pin ceramic dual-in-line package (CDIP) with JESD-30 code R-GDIP-T16. The ceramic construction provides hermetic sealing for protection against moisture and contamination, making this package well-suited for military, aerospace, and high-reliability industrial applications requiring long operational lifetimes.
What logic family does the CD4532BF3A belong to?
The CD4532BF3A is part of the CMOS 4000/14000/40000 logic family. This family operates over a wide supply voltage range (typically 3 V to 18 V) and is known for low quiescent power consumption, making the CD4532BF3A suitable for battery-powered and low-power digital systems as well as industrial control circuits.
What are common applications for the CD4532BF3A?
The CD4532BF3A is commonly used in interrupt controller circuits for microprocessors, keyboard matrix encoders, digital multiplexing systems, and any application requiring priority resolution among 8 competing signals. It reduces the need for discrete logic gates to implement priority selection, simplifying PCB design and reducing component count in digital control systems.
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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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