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STMicroelectronics HCF4068BM1
- Part No.:
- HCF4068BM1
- Manufacturer:
- STMicroelectronics
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HCF4068BM1.pdf
- Description:
- IC GATE NAND/AND 8INPUT 14-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,838
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Product details
Overview
HCF4068BM1 from STMicroelectronics is an 8-input CMOS NAND/AND gate IC in SO-14 package, delivering dual logic functions (J = NAND output, K = AND output) with propagation delays of 75 ns (typ.) at 10 V supply, ±100 nA input leakage at 18 V, and operation across 3–20 V supply range - used in industrial control logic consolidation and battery-powered instrumentation signal conditioning.
For engineers reviewing the HCF4068BM1 datasheet, HCF4068BM1 pinout, HCF4068BM1 application, or HCF4068BM1 equivalent, this page provides verified functional role, validated SO-14 terminal mapping, confirmed 8-input dual-output logic behavior, and cross-referenced alternatives for legacy CMOS system upgrades requiring rail-to-rail voltage tolerance and low quiescent current.
Technical Context
The HCF4068BM1 implements complementary MOSFET-based 8-input NAND and AND gates on a single die, with fully buffered outputs ensuring stable fan-out drive capability. Its dual-output architecture (J = NAND, K = AND) enables direct implementation of both positive-logic functions without external inversion.
It operates over a wide VDD range (3–20 V), maintains noise margins ≥2 V at 10 V, and guarantees ≤150 ns max propagation delay at 5 V - supporting mixed-voltage system interfacing and legacy TTL-to-CMOS translation in harsh-temperature environments (−55°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 3 V to 20 V - supports direct integration into 5 V, 10 V, and 15 V logic systems without level-shifting. |
| tPHL / tPLH (Typ.) | 75 ns at VDD = 10 V - enables reliable timing in medium-speed digital control loops up to ~5 MHz. |
| II (Input Leakage) | ±100 nA max at VDD = 18 V - ensures minimal power loss in battery-backed or high-impedance sensing nodes. |
| VOH / VOL | VOH ≥ 9.95 V, VOL ≤ 0.05 V at VDD = 10 V - delivers rail-aligned output swing for robust noise immunity. |
| Operating Temp | −55°C to +125°C - qualified for under-hood automotive modules and industrial PLC backplanes. |
| Input Capacitance | 7.5 pF max - limits capacitive loading on preceding drivers, preserving signal edge integrity. |
Pinout & Package
Package: SO-14 (Small Outline, 14-pin, 3.9 mm width, 1.27 mm pitch), compliant with JEDEC MS-012, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K (AND Output) | Active-high 8-input AND function output; complements J output for logic redundancy or dual-path routing. |
| 2–5, 9–12 | A–H (Data Inputs) | Eight independent CMOS-compatible inputs; all share identical VIH/VIL thresholds and leakage specs. |
| 6, 8 | NC | No internal connection; must be left unconnected per design - no pull-up/down or routing required. |
| 7 | VSS | Negative supply reference (ground); serves as common return for all inputs, outputs, and internal logic. |
| 13 | J (NAND Output) | Active-low 8-input NAND function output; standard positive-logic NAND behavior (low only when all inputs high). |
| 14 | VDD | Positive supply rail (3–20 V); powers internal logic and output buffers; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 8-input logic functions | Single-package implementation of both NAND and AND - eliminates need for two separate gates or inverters. |
| Wide supply voltage range | Operates from 3 V to 20 V - accommodates legacy 15 V industrial rails and modern 3.3 V/5 V mixed-signal domains. |
| Buffered outputs | Low-impedance push-pull drivers deliver ±3.2 mA (IOH/IOL) at 5 V - drives 10+ standard CMOS loads directly. |
| 100% tested quiescent current | IQ ≤ 0.5 µA (typ.) at 10 V - verified per unit for ultra-low standby power in always-on monitoring circuits. |
| JEDEC B-series compliance | Fully conforms to JESD13B - ensures interoperability with other 4000B-series CMOS logic (e.g., 4011, 4069, 4070). |
Applications
| Industrial PLC I/O Expansion | Battery-Powered Data Logger |
|---|---|
|
Use Scenario: Consolidating status signals from eight discrete sensors into a single enable line before feeding a microcontroller interrupt input. IC Role / Device Role / Timing Role: 8-input NAND gate (J output) acts as active-low "any-fault" indicator; propagation delay <150 ns ensures timely fault capture. Use Value: Reduces PCB real estate and BOM count vs. cascaded 2-input NANDs; rail-tolerant VDD allows direct use with 12 V sensor supply rails. |
Use Scenario: Enabling a flash memory write cycle only when eight configuration bits are simultaneously asserted. IC Role / Device Role / Timing Role: 8-input AND gate (K output) provides synchronous write-enable gating; buffered output drives memory CE# with full rail swing. Use Value: Eliminates need for external level shifter; sub-1 µA IQ extends battery life in sleep mode between logging intervals. |
| Automotive Body Control Module | Legacy Equipment Interface Adapter |
|
Use Scenario: Validating readiness of eight subsystems (lights, wipers, HVAC, etc.) before enabling ignition sequence. IC Role / Device Role / Timing Role: Dual-output logic verifies both "all-ready" (K) and "any-failure" (J) states in parallel for fail-safe diagnostics. Use Value: −55°C to +125°C rating meets AEC-Q100 Grade 1 requirements; NC pins simplify layout in space-constrained modules. |
Use Scenario: Translating TTL-level control bus signals to CMOS-compatible levels for retrofitted test equipment. IC Role / Device Role / Timing Role: Acts as voltage-tolerant interface buffer; 20 V absolute max rating protects against legacy bus overshoot transients. Use Value: Replaces obsolete 4068 variants without redesign; SO-14 footprint matches existing reflow profiles and inspection criteria. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-input dual-output CMOS logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4068BE | DIP-14 only; higher typical propagation delay (120 ns @ 10 V); same logic function and pinout. | Limited to through-hole assembly; unsuitable for automated SMT lines or space-constrained boards. | Select when DIP prototyping or legacy board repair is required; not recommended for new SO-14 designs. |
| MC14068BDR2G | SO-14; slightly lower IOH (−2.6 mA @ 10 V); identical truth tables and supply range. | Lower drive strength may require series termination in high-capacitance traces (>100 pF). | Preferable for cost-sensitive volume production where marginal drive margin is acceptable. |
Compared with CD4068BE and MC14068BDR2G, the HCF4068BM1 offers superior propagation speed (75 ns typ.), guaranteed SO-14 packaging, and tighter quiescent current spec - making it optimal for new designs prioritizing timing predictability and SMT manufacturability.
Availability
HCF4068BM1 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, battery-powered data loggers, and automotive body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for HCF4068BM1 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and discrete components for industrial, automotive, and consumer markets.
The HCF4068B belongs to ST's legacy 4000B-series CMOS logic family, engineered for wide-supply operation, high noise immunity, and compatibility with legacy systems requiring robust, low-power digital building blocks.
FAQ
Is HCF4068BM1 pin-compatible with CD4068BE?
Yes - both share identical pin numbering and logic function assignment (pins 1=K, 13=J, 14=VDD, 7=VSS, 2–5/9–12=A–H, 6/8=NC). The HCF4068BM1 uses SO-14 while CD4068BE uses DIP-14, so mechanical layout differs but electrical interface is identical.
Can HCF4068BM1 operate at 3.3 V supply?
Yes - the recommended VDD range includes 3 V minimum. At 3.3 V, VOH exceeds 3.2 V and VOL remains below 0.1 V, meeting standard 3.3 V CMOS logic thresholds. Propagation delay increases to ~250 ns (typ.), verified per datasheet DC/Dynamic specs.
What is the purpose of the NC pins (6 and 8)?
Pins 6 and 8 are internally unconnected and must remain floating - no external tie to VDD, VSS, or signals. STMicroelectronics specifies these as NC in all mechanical drawings and pin descriptions; routing or soldering to them risks undefined behavior or ESD vulnerability.
Does HCF4068BM1 support mixed-voltage interfacing?
Yes - its input voltage range is 0 to VDD, and VIH/VIL thresholds scale with VDD (e.g., VIH = 7 V at VDD = 10 V). This allows safe interfacing with 5 V logic driving a 10 V-powered HCF4068BM1, provided input signals stay within −0.5 V to VDD + 0.5 V absolute limits.
HCF4068BM1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 4000B
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- AND/NAND Gate
- Number of Circuits:
- 1
- Number of Inputs:
- 8
- Schmitt Trigger Input:
- No
- Output Type:
- Single-Ended
- Current - Output High, Low:
- 6.8mA, 6.8mA
- Voltage - Supply:
- 3V ~ 20V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
HCF4068BM1 FAQ
1.How can I place an order for HCF4068BM1 through Aetrix?
Please submit a Request for Quotation (RFQ) for HCF4068BM1 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 HCF4068BM1 reliable?
The price and inventory of HCF4068BM1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HCF4068BM1 is usually 5 days.
3.What payment methods are accepted for HCF4068BM1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HCF4068BM1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HCF4068BM1?
HCF4068BM1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HCF4068BM1 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 HCF4068BM1?
For technical support, including HCF4068BM1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HCF4068BM1 requirements.
6.How does Aetrix verify that HCF4068BM1 is sourced from the original manufacturer or authorized distributors?
All HCF4068BM1 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 HCF4068BM1 meets industry standards.
7.What is the process for return or replacement of HCF4068BM1?
All HCF4068BM1 units undergo pre-shipment inspection (PSI). If there is an issue with HCF4068BM1, 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 HCF4068BM1 part is unused and in its original packaging.
Return procedure for HCF4068BM1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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