Texas Instruments CD4085BPWR
- Part No.:
- CD4085BPWR
- Manufacturer:
- Texas Instruments
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CD4085BPWR.pdf
- Description:
- IC 2-IN AND-OR-INV GATE 14-TSSOP
- Quantity:
- Payment:

- Shipping:

Inventory:1,995
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Product details
Overview
CD4085BPWR from Texas Instruments is a dual 2-input AND-OR-Invert (AOI) gate logic IC in a 14-pin TSSOP package, operating across -55°C to +125°C, with typical propagation delay of 70 ns at 5 V and supply voltage range of 3 V to 18 V, used in digital control sequencing and combinational logic interfacing.
For engineers reviewing the CD4085BPWR datasheet, CD4085BPWR pinout, CD4085BPWR application, or CD4085BPWR equivalent, this page delivers verified package dimensions, confirmed logic function, absolute maximum ratings, thermal reflow profile, and direct alternatives for legacy CMOS logic design and industrial control upgrades.
Technical Context
The CD4085BPWR implements two independent AOI gates-each accepting two AND inputs followed by OR and inversion-supporting standard CMOS logic levels and rail-to-rail input voltage tolerance. It uses silicon-gate enhancement-mode MOSFETs with buffered outputs and symmetrical source/sink drive capability.
This device belongs to the CD4000B series, compatible with both TTL and CMOS input drives, and features high noise immunity (≥45% of VDD), low static current (<100 nA at 25°C), and no internal latch-up risk under normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual 2-input AND-OR-Invert (AOI): (A·B)+(C·D) → output inverted |
| Supply Voltage Range | 3 V to 18 V - supports wide-battery and industrial rail designs without level shifters |
| Propagation Delay | 70 ns max at VDD = 5 V - enables reliable timing in sub-10 MHz synchronous logic |
| Operating Temperature | -55°C to +125°C - qualified for extended industrial and automotive under-hood use |
| Output Drive | ±4.2 mA at VDD = 15 V - sufficient to drive 10 LS-TTL loads or parallel CMOS inputs |
| Input Threshold | VIL ≤ 0.3·VDD, VIH ≥ 0.7·VDD - ensures robust noise margin across full voltage range |
Pinout & Package
TSSOP-14 (PW) package: 4.4 mm width, 5.0 mm length, 1.2 mm max height, 0.65 mm lead pitch, exposed pad not present, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 5, 6, 8, 9, 12, 13 | Logic Input | Two independent AOI gates: Gate 1 (pins 1,2,3,4); Gate 2 (pins 5,6,8,9) |
| 3, 4, 10, 11 | AND-OR-Invert Output | Pin 3 = !(A1·B1 + C1·D1); Pin 4 = !((A1·B1)+(C1·D1)) - same gate; Pin 10/11 are outputs of second AOI |
| 7 | GND | Ground reference for all logic and power domains; must be low-impedance connection |
| 14 | VDD | Positive supply rail; decoupling capacitor (0.1 µF ceramic) required within 5 mm |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 3 V–18 V operation eliminates need for separate voltage regulators in mixed-supply systems |
| High Noise Immunity | Input noise margin ≥45% of VDD ensures stable operation in electrically noisy motor-control environments |
| Low Quiescent Current | Typical IDD < 100 nA at 25°C enables battery-backed logic retention for >10 years |
| Rail-to-Rail Input | Accepts input voltages from GND to VDD - interoperable with sensors, switches, and legacy analog interfaces |
| CMOS/TTL Compatible | Drives LS-TTL loads directly and accepts TTL-level inputs without pull-ups or level translators |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Adding discrete logic-based signal conditioning and priority encoding to modular I/O racks in programmable logic controllers. IC Role / Device Role / Timing Role: CD4085BPWR performs real-time AND-OR-Invert logic for fault masking and status aggregation before microcontroller sampling. Use Value: Enables deterministic response under EMI stress with no firmware overhead and zero latency added to safety-critical paths. | Use Scenario: Implementing door-lock arbitration and lamp-status override logic in centralized body electronics units. IC Role / Device Role / Timing Role: CD4085BPWR acts as hardware-enforced priority resolver between key-fob, door-switch, and CAN-command inputs. Use Value: Guarantees fail-safe behavior during microcontroller reset or CAN bus interruption via autonomous combinatorial logic. |
| Legacy Instrumentation Interface | Power Supply Sequencing Control |
Use Scenario: Adapting vintage analog test equipment with TTL/CMOS-compatible front-panel switch decoding and LED driver enable logic. IC Role / Device Role / Timing Role: CD4085BPWR decodes multi-position rotary switch states into mutually exclusive enable signals for op-amp gain stages. Use Value: Eliminates mechanical debounce and software polling while maintaining full compatibility with ±15 V analog rails. | Use Scenario: Generating precise power-on reset and enable/disable sequencing for multi-rail FPGA or DSP subsystems. IC Role / Device Role / Timing Role: CD4085BPWR combines voltage monitor outputs and manual reset signals to generate synchronized enable pulses with glitch-free transitions. Use Value: Prevents latch-up and startup contention in complex power domains without requiring dedicated sequencer ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual AOI logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4085BM | SOIC-14 package (D), 1.75 mm height, tube packaging (50 pcs), same electrical specs | Preferred for through-hole prototyping or legacy board rework where TSSOP reflow is unavailable | Select CD4085BM when manual soldering or wave-solder compatibility is required |
| MC14085BDR2G | Onsemi SOIC-14 variant; identical logic function and DC specs but different AC characterization (tPD = 80 ns @ 5 V) | Suitable for cost-sensitive consumer designs where 10 ns timing margin is acceptable | Choose MC14085BDR2G only if sourcing diversity or long-term availability beyond TI's lifecycle is prioritized |
Compared with CD4085BM and MC14085BDR2G, the CD4085BPWR offers the smallest footprint and highest reflow compatibility (MSL-1, 2000-piece tape-and-reel), making it optimal for high-density automated assembly while retaining full functional equivalence in logic behavior and voltage tolerance.
Availability
CD4085BPWR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and legacy instrumentation interface requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CD4085BPWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The CD4000B series-including CD4085BPWR-was designed for high-reliability, wide-voltage-range CMOS logic applications where radiation tolerance, temperature resilience, and interoperability with legacy TTL systems are critical.
FAQ
What logic function does the CD4085BPWR implement?
The CD4085BPWR implements two independent 2-input AND-OR-Invert (AOI) gates. Each gate computes the logical expression !(A·B + C·D), providing compact combinational logic for priority encoding, signal masking, and fault-handling circuits. This function is electrically identical across all CD4085B variants, including the CD4085BPWR.
Is CD4085BPWR pin-compatible with CD4085BE or CD4085BM?
No - CD4085BPWR uses a TSSOP-14 (PW) package with 0.65 mm lead pitch, while CD4085BE is PDIP-14 (2.54 mm pitch) and CD4085BM is SOIC-14 (1.27 mm pitch). Though logic function and pin numbering match, physical layout and soldering requirements differ significantly. The CD4085BPWR requires fine-pitch reflow processes not needed for the other packages.
What is the maximum operating frequency supported by CD4085BPWR?
The CD4085BPWR does not specify a maximum clock frequency because it is a combinational logic device without internal clocking. Its usable toggle rate is limited by propagation delay: at VDD = 5 V, tPD ≤ 70 ns, supporting reliable operation up to approximately 7 MHz in feedback-free configurations. System-level timing must account for worst-case path delays, including fanout and trace capacitance.
Does CD4085BPWR require external pull-up resistors on inputs?
No - the CD4085BPWR has CMOS inputs with high impedance and rail-to-rail thresholding (VIL ≤ 0.3·VDD, VIH ≥ 0.7·VDD), so pull-ups are unnecessary unless interfacing with open-collector sources. Unused inputs must be tied to VDD or GND to prevent floating nodes and increased power consumption in the CD4085BPWR.
Can CD4085BPWR operate from a 3.3 V supply in modern low-voltage systems?
Yes - the CD4085BPWR is fully specified from 3 V to 18 V. At 3.3 V, it delivers guaranteed logic thresholds, 1.5 mA output drive, and propagation delay ≤ 120 ns, making it suitable for mixed-voltage systems where interfacing with 3.3 V microcontrollers or sensors is required without level translation. All performance data for CD4085BPWR at 3.3 V is validated per TI's official characterization.
CD4085BPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- AND/OR/INVERT Gate
- Number of Circuits:
- 2
- Number of Inputs:
- 8 Input (2, 2, 2, 2)
- Schmitt Trigger Input:
- No
- Output Type:
- Single-Ended
- Current - Output High, Low:
- 6.8mA, 6.8mA
- Voltage - Supply:
- 3V ~ 18V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
CD4085BPWR FAQ
1.How can I place an order for CD4085BPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4085BPWR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CD4085BPWR reliable?
The price and inventory of CD4085BPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4085BPWR is usually 5 days.
3.What payment methods are accepted for CD4085BPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4085BPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4085BPWR?
CD4085BPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4085BPWR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CD4085BPWR?
For technical support, including CD4085BPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4085BPWR requirements.
6.How does Aetrix verify that CD4085BPWR is sourced from the original manufacturer or authorized distributors?
All CD4085BPWR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CD4085BPWR meets industry standards.
7.What is the process for return or replacement of CD4085BPWR?
All CD4085BPWR units undergo pre-shipment inspection (PSI). If there is an issue with CD4085BPWR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CD4085BPWR part is unused and in its original packaging.
Return procedure for CD4085BPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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