CD4085BF3A Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
CD4085BF3A is a Texas Instruments CMOS 2-wide 4-input AND-OR-INVERT (AOI) gate in a 14-pin ceramic DIP package, offering two expandable gate functions. Operates from 3 V to 18 V with 50 pF load capacitance rating. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD4085BF3A 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
What are the key features of CD4085BF3A?
- Expandable AND-OR-INVERT architecture allows combining multiple CD4085 devices to implement complex Boolean functions without additional logic ICs
- Wide supply range of 3 V to 18 V makes CD4085BF3A compatible with both 5 V TTL-level and 12 V/15 V CMOS system voltages
- 14-pin ceramic DIP package provides hermetic protection, making it suitable for military-grade and high-reliability industrial environments
- CMOS technology yields extremely low quiescent current in static conditions, ideal for battery-backed and energy-sensitive control logic
What is CD4085BF3A used for?
CD4085BF3A implements sum-of-products Boolean expressions in programmable logic, glue-logic circuits, and legacy CMOS system designs operating from 3 V to 18 V. Its expandable AOI gate structure is used in address decoding, arithmetic carry-lookahead logic, and state-machine combinatorial output stages where minimizing gate count is important. The ceramic DIP package suits aerospace, defense, and industrial equipment where hermetic sealing and extended temperature operation are required.
What are the specifications of CD4085BF3A?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | EXPANDABLE |
| Family | 4000/14000/40000 |
| JESD-30 Code | R-CDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | AND-OR-INVERT GATE |
| Max I(ol) | 0.0015A |
| Number of Functions | 2 |
| Number of Inputs | 4 |
| Package Body Material | CERAMIC, METAL-SEALED COFIRED |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.6mA |
| Prop. Delay@Nom-Sup | 620ns |
| Propagation Delay (tpd) | 620ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| 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 | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the CD4085BF3A datasheet?
CD4085BF3A Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD4085BF3A?
Compatible alternatives and drop-in replacements for CD4085BF3A:
Frequently Asked Questions
How does the expandable AOI structure of CD4085BF3A reduce gate count compared to discrete AND and OR gates?
CD4085BF3A implements 2-wide, 4-input AND-OR-INVERT in a single 14-pin package, replacing up to four separate 2-input AND gates plus one OR gate plus one inverter. Chaining two CD4085 devices through the expansion inputs can implement an 8-wide AND-OR-INVERT function without any additional ICs, reducing component count and propagation delay in address-decode and sum-of-products logic by roughly 30 to 50 percent.
What supply voltage range does CD4085BF3A support, and does it interface directly with 5 V TTL logic?
CD4085BF3A operates from 3 V to 18 V supply. At 5 V, it meets standard CMOS logic levels (VIH ≥ 3.5 V, VIL ≤ 1.5 V at VDD = 5 V), making it compatible with TTL-output signals that swing to 2.4 V high. However, the output drive current is limited to 1.5 mA, so a buffer is needed when driving more than one standard TTL load or a 50 pF trace longer than a few centimeters.
For a military or aerospace design, why is the ceramic DIP package of CD4085BF3A preferred over plastic alternatives?
The 14-pin CDIP (ceramic DIP) package of CD4085BF3A provides hermetic sealing that blocks moisture ingress to below 5,000 ppm, meeting MIL-STD-883 requirements. Plastic DIP devices absorb atmospheric moisture and can suffer oxide corrosion or delamination at temperatures above 125°C, while the ceramic package reliably operates across -55°C to +125°C, which is mandatory for avionics and satellite ground-support equipment qualification.
How does CD4085BF3A compare to a standard CD4082 quad AND gate for implementing a 2-of-4 address decoder?
A CD4082 provides two independent 4-input AND gates with no OR stage, requiring an external OR gate to complete an AND-OR-INVERT decoder. CD4085BF3A integrates the AND, OR, and INVERT stages in one 14-pin device, producing an active-low decoded output in approximately 125 ns at 5 V and 50 pF load. This saves one IC package and reduces board space by at least 30 mm² in a legacy CMOS design.
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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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