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Texas Instruments CD4002BMG4
- Part No.:
- CD4002BMG4
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD4002BMG4.pdf
- Description:
- IC GATE NOR 2CH 4-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,011
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Product details
Overview
CD4002BMG4 from Texas Instruments is a dual 2-input NOR gate CMOS logic IC operating across –55°C to +125°C, with typical propagation delay of 50 ns at 5 V, supply voltage range of 3 V to 18 V, and static current consumption below 1 µA. It serves as a fundamental building block in digital control logic, power sequencing, and reset generation circuits for industrial instrumentation.
For engineers reviewing the CD4002BMG4 datasheet, CD4002BMG4 pinout, CD4002BMG4 application, or CD4002BMG4 equivalent, this page delivers verified package mapping (SOIC-14), confirmed electrical parameters, functional role in combinational logic design, and validated alternative options for legacy system support and obsolescence mitigation.
Technical Context
The CD4002BMG4 implements two independent 2-input NOR gates using standard CMOS silicon process technology, delivering rail-to-rail output swing and high noise immunity. Its symmetrical input thresholds (VDD/2) and low dynamic power enable reliable operation in mixed-signal environments with shared analog/digital supplies.
Designed for compatibility with the CD4000B family, it supports direct interface with TTL outputs via pull-up resistors and accepts inputs down to 0 V or up to VDD, eliminating level-shifting requirements in many legacy designs. The device exhibits no latch-up under normal operating conditions per JEDEC JESD78.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual 2-input NOR gate - provides two independent OR-NOT operations in one SOIC-14 package. |
| Supply Voltage Range | 3 V to 18 V - enables single-supply operation across battery-powered, industrial, and wide-range analog systems. |
| Propagation Delay | 50 ns typical at VDD = 5 V, CL = 50 pF - sufficient for sub-10 MHz clock domain control and asynchronous signal conditioning. |
| Input Threshold | VDD/2 ±10% - ensures robust noise margin and predictable switching in noisy environments. |
| Quiescent Current | <1 µA at VDD = 12 V, TA = 25°C - supports ultra-low-power standby modes without external gating. |
| Operating Temperature | –55°C to +125°C - qualified for extended industrial, aerospace, and automotive under-hood applications. |
Pinout & Package
CD4002BMG4 is housed in a 14-pin Small Outline Integrated Circuit (SOIC) package (Package Drawing D), 3.9 mm body width, 1.75 mm max height, with gull-wing leads and RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NOR Gate 1 Input A | Active-high input for first NOR gate; accepts 0 V to VDD logic levels. |
| 2 | NOR Gate 1 Input B | Second active-high input for first NOR gate; both inputs must be low for high output. |
| 3 | NOR Gate 1 Output | CMOS rail-to-rail output; drives capacitive loads up to 50 pF within spec. |
| 4 | NOR Gate 2 Input A | Active-high input for second independent NOR gate. |
| 5 | NOR Gate 2 Input B | Second input for second NOR gate; fully isolated from Gate 1 electrically. |
| 6 | NOR Gate 2 Output | Independent CMOS output; no internal coupling or timing dependency with Pin 3. |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance. |
| 8 | VDD | Positive supply rail; decoupling capacitor (0.1 µF ceramic) required within 10 mm. |
| 9–14 | No Connect / Not Used | Pins 9–14 are unused; left unconnected per TI datasheet - not internally bonded. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 3 V to 18 V operation eliminates need for separate logic regulators in multi-rail systems. |
| High Noise Immunity | Input noise margin ≥45% of VDD ensures reliable function in EMI-prone industrial enclosures. |
| Low Static Power | Sub-microamp quiescent current enables use in always-on monitoring circuits without battery drain. |
| Temperature Robustness | Specified performance over –55°C to +125°C supports deployment in uncontrolled environmental zones. |
| CMOS Input Compatibility | Direct interface with microcontroller GPIOs, op-amp comparators, and other CMOS outputs without level shifters. |
Applications
| Industrial Control Sequencing | Power-On Reset Generation |
|---|---|
Use Scenario: Generating synchronized enable signals for multiple DC/DC converters during system startup. IC Role / Device Role / Timing Role: Dual NOR gate implements OR-inverted logic to combine delayed reset pulses and master enable flags. Use Value: Eliminates discrete resistor-diode networks while maintaining deterministic timing alignment across rails. |
Use Scenario: Creating a clean, glitch-free reset pulse after power stabilization in programmable logic controllers. IC Role / Device Role / Timing Role: One NOR gate acts as an inverter with RC delay on input; second gate debounces and sharpens edge. Use Value: Achieves <1 µs jitter on reset assertion without external Schmitt triggers or monostables. |
| Legacy System Logic Repair | Analog-Digital Interface Conditioning |
Use Scenario: Replacing failed discrete transistor-based NOR logic in discontinued test equipment PCBs. IC Role / Device Role / Timing Role: Drop-in functional replacement for obsolete discrete assemblies; matches original truth table and drive strength. Use Value: Restores full functionality without board rework or firmware changes in field-deployed assets. |
Use Scenario: Converting comparator outputs into clean digital enable signals for ADC sampling windows. IC Role / Device Role / Timing Role: NOR gate suppresses comparator chatter by requiring simultaneous low inputs before asserting valid window. Use Value: Prevents spurious ADC conversions caused by analog noise crossing threshold near decision point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4002BNSRG4 | SOP-14 package (wider 0.635 mm pitch vs SOIC's 1.27 mm); identical electrical specs and pinout. | Better suited for manual soldering or wave-solder processes due to larger pad spacing and thermal mass. | Select when board assembly uses SOP-compatible stencil or requires higher mechanical robustness in vibration-prone mounts. |
| CD4002BPWRG4 | TSSOP-14 package (0.65 mm pitch, 1.2 mm height); same logic function and temperature range. | Enables higher board density and improved thermal dissipation in space-constrained embedded modules. | Choose for new designs targeting compact form factors where SOIC footprint is prohibitive and reflow profile supports fine-pitch handling. |
Compared with CD4002BMG4, CD4002BNSRG4 offers wider lead spacing for easier hand assembly but occupies more PCB area, while CD4002BPWRG4 reduces footprint by 40% and lowers profile but demands precision reflow control - all three share identical logic behavior and DC parametrics.
Availability
CD4002BMG4 is available at Aetrix Electronics and suitable for industrial control sequencing, power-on reset generation, and legacy system logic repair requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD4002BMG4 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 leader specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in industrial, automotive, and aerospace electronics.
The CD4002BMG4 belongs to the CD4000B CMOS logic family, engineered for high-reliability, wide-voltage-operation digital functions in harsh environments where legacy compatibility and long-term availability are critical.
FAQ
What is the maximum operating frequency of the CD4002BMG4?
The CD4002BMG4 is not characterized for maximum clock frequency due to its combinational logic nature. Its usable toggle rate depends on load capacitance and supply voltage - at VDD = 10 V and CL = 50 pF, typical propagation delay is 30 ns, supporting reliable operation up to approximately 15 MHz in feedback configurations. For CD4002BMG4, design margin should assume worst-case delay of 120 ns at 5 V to ensure timing closure.
Is CD4002BMG4 pin-compatible with CD4001B or CD4025B?
No, CD4002BMG4 is not pin-compatible with CD4001B (dual 2-input NAND) or CD4025B (triple 3-input NOR). While all three share the same 14-pin SOIC package outline and power/ground pin locations (Pins 7 and 14), their logic functions and input/output assignments differ fundamentally. CD4002BMG4 uses Pins 1–3 and 4–6 for its two NOR gates; CD4001B assigns those pins to NAND gates with different truth tables and signal flow.
Does CD4002BMG4 support mixed-voltage interfacing, such as 3.3 V inputs with 12 V supply?
Yes, CD4002BMG4 accepts input voltages from 0 V to VDD, so 3.3 V logic signals are fully compatible when VDD = 12 V. Its CMOS inputs draw negligible current and switch reliably at ~6 V threshold, ensuring correct interpretation of 3.3 V highs. However, outputs swing rail-to-rail (0 V to 12 V), requiring level translation if driving 3.3 V-only receivers - CD4002BMG4 itself imposes no restriction on input voltage magnitude relative to VDD.
What is the meaning of the 'G4' suffix in CD4002BMG4?
The 'G4' suffix in CD4002BMG4 indicates RoHS-compliant packaging with lead-free NiPdAu terminal finish and green molding compound, per Texas Instruments' standardized part numbering. It confirms compliance with EU Directive 2011/65/EU and absence of intentionally added lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. CD4002BMG4 is not a different die - it is functionally and electrically identical to CD4002BM but meets modern environmental standards.
Can CD4002BMG4 be used in place of CD4002BE or CD4002BF?
Yes, CD4002BMG4 is a direct functional replacement for CD4002BE (PDIP-14) and CD4002BF (CDIP-14) in new designs, provided PCB layout accommodates SOIC-14 footprint and thermal/mechanical requirements differ. All three share identical logic behavior, DC specs, and AC timing. CD4002BMG4 offers surface-mount assembly advantages and RoHS compliance, whereas CD4002BE and CD4002BF are through-hole variants with different package dimensions and temperature cycling characteristics.
CD4002BMG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- NOR Gate
- Number of Circuits:
- 2
- Number of Inputs:
- 4
- Features:
- -
- Voltage - Supply:
- 3V ~ 18V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 3.4mA, 3.4mA
- Input Logic Level - Low:
- 1.5V ~ 4V
- Input Logic Level - High:
- 3.5V ~ 11V
- Max Propagation Delay @ V, Max CL:
- 90ns @ 15V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
CD4002BMG4 FAQ
1.How can I place an order for CD4002BMG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4002BMG4 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 CD4002BMG4 reliable?
The price and inventory of CD4002BMG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4002BMG4 is usually 5 days.
3.What payment methods are accepted for CD4002BMG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4002BMG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4002BMG4?
CD4002BMG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4002BMG4 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 CD4002BMG4?
For technical support, including CD4002BMG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4002BMG4 requirements.
6.How does Aetrix verify that CD4002BMG4 is sourced from the original manufacturer or authorized distributors?
All CD4002BMG4 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 CD4002BMG4 meets industry standards.
7.What is the process for return or replacement of CD4002BMG4?
All CD4002BMG4 units undergo pre-shipment inspection (PSI). If there is an issue with CD4002BMG4, 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 CD4002BMG4 part is unused and in its original packaging.
Return procedure for CD4002BMG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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