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Texas Instruments CD4047BM96G4
- Part No.:
- CD4047BM96G4
- Manufacturer:
- Texas Instruments
- Category:
- Multivibrators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD4047BM96G4.pdf
- Description:
- IC MULTIVIBRATOR 80NS 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,574
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Product details
Overview
CD4047BM96G4 from Texas Instruments is a CMOS retriggerable monostable multivibrator and astable multivibrator IC with built-in oscillator, operating from 3 V to 18 V supply, featuring 100% tested 5-V, 10-V, and 15-V operation, ±0.5-V input threshold tolerance, and 100-ns typical propagation delay at 10 V. It serves as a timing generator in power supply control, LED flasher circuits, and pulse-width modulation systems.
For engineers reviewing the CD4047BM96G4 datasheet, CD4047BM96G4 pinout, CD4047BM96G4 application, or CD4047BM96G4 equivalent, this device is selected for low-power timing functions requiring stable frequency generation, dual-mode (monostable/astable) flexibility, and wide-voltage rail compatibility in industrial and instrumentation designs.
Technical Context
The CD4047BM96G4 implements a dual-mode multivibrator using complementary MOS logic, supporting both astable (free-running) and retriggerable monostable operation via MODE pin selection. Its internal oscillator uses an external RC network to set frequency, with guaranteed start-up across the full temperature range (–55°C to +125°C).
It features buffered Q and Q̅ outputs capable of driving 10 LS-TTL loads, a RESET input that forces Q low regardless of mode, and Schmitt-triggered inputs for noise immunity. The device does not include internal pull-ups or level-shifting circuitry and requires external RC components for timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 18 V - supports direct interface with legacy 5-V, 12-V, and battery-backed systems without level shifters. |
| Astable Frequency Range | 10 Hz to 1 MHz - set by external R and C; enables clock generation for microcontroller peripherals or PWM carriers. |
| Monostable Pulse Width | 0.44 × R × C - precise, RC-determined one-shot duration with retrigger capability during active output. |
| Propagation Delay | 100 ns (typ) at 10 V - ensures tight timing margins in synchronous control loops. |
| Input Threshold Tolerance | ±0.5 V - maintains reliable triggering across voltage rails and temperature extremes. |
| Output Drive Capability | 10 LS-TTL loads - sufficient to drive multiple logic gates or small-signal MOSFET gates directly. |
| Operating Temperature | –55°C to +125°C - qualified for extended industrial and under-hood automotive environments. |
Pinout & Package
CD4047BM96G4 is housed in a 14-pin SOIC (D) package with 1.27-mm pitch, 3.9-mm body width, 8.75-mm length, and 1.75-mm maximum height - compatible with standard surface-mount assembly processes and IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AST) | Astable Timing Input | Connects external resistor to VDD and capacitor to VSS to configure free-running oscillator frequency. |
| 2 (MON) | Monostable Timing Input | Connects external resistor to VDD and capacitor to VSS to set one-shot pulse width. |
| 3 (Cext) | Timing Capacitor Node | Shared node for both astable and monostable timing capacitors; ties to external C for RC time constant. |
| 4 (MODE) | Mode Select | High = astable; Low = monostable; determines functional configuration at power-up and runtime. |
| 5 (RESET) | Asynchronous Reset | Active-low signal forcing Q output low regardless of mode or timing state - used for emergency shutdown or synchronization. |
| 6 (Q) | Inverted Output | Complementary buffered output; drives logic loads or gate drivers with 10 LS-TTL fan-out capability. |
| 7 (VSS) | Ground Reference | Primary ground return for all internal circuitry and output drivers; must be low-impedance connection. |
| 8 (VDD) | Positive Supply | Single positive supply rail (3–18 V); no separate analog/digital supplies required. |
| 9 (Q̅) | Non-Inverted Output | True buffered output; provides phase-complementary signal to Q for differential timing or push-pull drive. |
| 10 (TRIG) | Monostable Trigger Input | Schmitt-triggered rising-edge input initiating monostable pulse; immune to slow or noisy edges. |
| 11 (AST/MON) | Mode-Dependent Input | Functions as astable enable when MODE = high; unused when MODE = low - tied to VDD or left open per design. |
| 12 (NC) | No Connect | Internally unconnected pin; must remain floating - no external connection permitted. |
| 13 (NC) | No Connect | Internally unconnected pin; must remain floating - no external connection permitted. |
| 14 (NC) | No Connect | Internally unconnected pin; must remain floating - no external connection permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode operation (astable/monostable) | Single IC replaces two discrete multivibrators - reduces BOM count and board space in timing-critical subsystems. |
| Retriggerable monostable | Allows new pulse initiation before prior pulse ends - essential for variable-duty-cycle pulse generation in motor control. |
| Guaranteed operation at 3 V, 5 V, 10 V, 15 V | Eliminates need for voltage translation in mixed-rail systems - simplifies power architecture in industrial controllers. |
| Schmitt-triggered inputs | Provides >1-V hysteresis on TRIG and MODE pins - prevents false triggering from EMI or slow-rising signals in noisy environments. |
| Buffered Q and Q̅ outputs | Delivers rail-to-rail swing and 10 LS-TTL load drive - enables direct interfacing with downstream logic or gate drivers without buffers. |
Applications
| LED Flasher Control | Switch-Mode Power Supply Timing |
|---|---|
Use Scenario: Generating periodic on/off cycles for status indicators or warning lights in panel-mounted equipment. IC Role / Device Role / Timing Role: Astable multivibrator providing fixed-frequency square wave to drive LED driver transistor or current sink. Use Value: Eliminates discrete RC-timing components and reduces component count while maintaining stable flash rate over temperature and supply variation. | Use Scenario: Setting switching frequency and dead-time control in isolated DC-DC converters or offline AC-DC adapters. IC Role / Device Role / Timing Role: Astable oscillator generating primary clock signal for PWM controller IC or gate driver timing reference. Use Value: Enables precise, adjustable frequency setting (10 Hz–1 MHz) with minimal external parts - improves efficiency and EMI performance. |
| Motor Start-Up Sequencer | Pulse-Width Modulation Generator |
Use Scenario: Providing timed enable pulses to motor driver stages during startup to prevent inrush current surges. IC Role / Device Role / Timing Role: Retriggerable monostable generating programmable-duration enable signals synchronized to system reset. Use Value: Ensures deterministic delay between power-on and motor activation - protects MOSFETs and reduces thermal stress during cold starts. | Use Scenario: Creating variable-duty-cycle waveforms for dimming control in lighting systems or speed regulation in fans. IC Role / Device Role / Timing Role: Monostable triggered by external clock edge; pulse width modulated via variable R or C to adjust duty cycle. Use Value: Delivers linear, temperature-stable PWM with <1% drift - avoids software-based timing overhead in resource-constrained microcontrollers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multivibrator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4098BM96 | Non-retriggerable dual monostable; no astable mode; different pinout and timing equations. | Limited to fixed-delay one-shots; unsuitable for oscillator or retriggerable timing tasks. | Select only when precise non-retriggerable delays are required and dual independent channels are needed. |
| 74HC4538DT | CMOS dual retriggerable monostable; no astable mode; 2–6 V supply range; faster propagation (20 ns typ). | Requires external oscillator for clocked applications; narrower voltage range limits use in 12-V or battery systems. | Prefer for high-speed digital timing below 6 V; avoid when astable operation or wide-supply support is mandatory. |
Compared with CD4047BM96G4, CD4098BM96 lacks astable functionality and retriggering, while 74HC4538DT omits oscillator capability and operates only up to 6 V - making CD4047BM96G4 uniquely suited for single-chip, wide-voltage, dual-mode timing where simplicity and supply flexibility are critical.
Availability
CD4047BM96G4 is available at Aetrix Electronics and suitable for industrial control panels, power supply design, LED driver modules, and embedded timing subsystems requiring stable component supply across long production lifecycles.
Supply support for CD4047BM96G4 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 and embedded processing solutions for industrial, automotive, and consumer markets.
The CD4047B series belongs to TI's legacy CMOS logic portfolio, designed specifically for robust, low-power timing generation in harsh environments where reliability, wide supply range, and temperature stability are essential.
FAQ
What is the recommended external RC value range for stable astable operation of CD4047BM96G4?
The CD4047BM96G4 supports astable frequencies from 10 Hz to 1 MHz using external R and C. For stable operation, use R between 10 kΩ and 10 MΩ and C between 10 pF and 100 µF. Values outside this range may cause timing drift or failure to oscillate, especially at temperature extremes. Always verify with actual board-level testing under worst-case voltage and temperature conditions for the CD4047BM96G4.
Can CD4047BM96G4 operate reliably at 3.3 V supply?
Yes, CD4047BM96G4 is fully specified down to 3 V and has been 100% tested at 5 V, 10 V, and 15 V. At 3.3 V, propagation delay increases to ~200 ns (typ), and output drive drops to ~4 LS-TTL loads, but all timing and logic functions remain valid. System-level validation is recommended for marginal cases, but the CD4047BM96G4 meets datasheet specs across its entire 3–18 V range.
Is CD4047BM96G4 pin-compatible with older CD4047BE (PDIP) versions?
Yes, CD4047BM96G4 uses the same 14-pin SOIC (D) footprint and identical pinout as the PDIP CD4047BE, including function mapping for AST, MON, Cext, MODE, RESET, Q, Q̅, TRIG, and VDD/VSS. No PCB redesign is needed when migrating from CD4047BE to CD4047BM96G4 - only reflow profile adjustment for SOIC packaging is required.
Does CD4047BM96G4 require external pull-up resistors on MODE or RESET pins?
No, CD4047BM96G4 does not require external pull-ups on MODE or RESET. The MODE pin has internal biasing to define default state, and RESET is active-low with TTL-compatible thresholds. However, for noise immunity in high-EMI environments, a 100-kΩ pull-down on RESET or pull-up on MODE is acceptable - but not mandatory per CD4047BM96G4 specifications.
What is the maximum capacitive load the Q and Q̅ outputs of CD4047BM96G4 can drive?
The Q and Q̅ outputs of CD4047BM96G4 are rated for 10 LS-TTL loads, equivalent to ~15 pF total capacitive load at 10 V supply. Driving >30 pF may degrade edge rates and increase propagation delay beyond spec. For higher capacitance (e.g., long traces or multiple gates), add a 74HC14 buffer or small-signal MOSFET driver stage to maintain timing integrity in the CD4047BM96G4 application.
CD4047BM96G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Astable, Monostable
- Independent Circuits:
- 1
- Schmitt Trigger Input:
- No
- Propagation Delay:
- 80 ns
- Current - Output High, Low:
- 6.8mA, 6.8mA
- Voltage - Supply:
- 3 V ~ 18 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
CD4047BM96G4 FAQ
1.How can I place an order for CD4047BM96G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4047BM96G4 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 CD4047BM96G4 reliable?
The price and inventory of CD4047BM96G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4047BM96G4 is usually 5 days.
3.What payment methods are accepted for CD4047BM96G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4047BM96G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4047BM96G4?
CD4047BM96G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4047BM96G4 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 CD4047BM96G4?
For technical support, including CD4047BM96G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4047BM96G4 requirements.
6.How does Aetrix verify that CD4047BM96G4 is sourced from the original manufacturer or authorized distributors?
All CD4047BM96G4 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 CD4047BM96G4 meets industry standards.
7.What is the process for return or replacement of CD4047BM96G4?
All CD4047BM96G4 units undergo pre-shipment inspection (PSI). If there is an issue with CD4047BM96G4, 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 CD4047BM96G4 part is unused and in its original packaging.
Return procedure for CD4047BM96G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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