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Texas Instruments CD4050BDRG4
- Part No.:
- CD4050BDRG4
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD4050BDRG4.pdf
- Description:
- IC BUFFER NON-INVERT 18V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,576
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Product details
Overview
CD4050BDRG4 from Texas Instruments is a noninverting hex buffer IC designed for CMOS-to-TTL/DTL logic-level conversion and high-sink-current driving in single-supply systems. It operates from 3V to 18V, delivers ≥3.2mA sink current at VCC = 5V and TA = 25°C, features ≤0.05V VOL (max), and supports –55°C to +125°C industrial temperature range - used in voltage translation interfaces for microcontroller I/O expansion.
For engineers reviewing the CD4050BDRG4 datasheet, CD4050BDRG4 pinout, CD4050BDRG4 application, or CD4050BDRG4 equivalent, this page provides verified functional specifications, validated SOIC-16 pin mapping, confirmed logic-level conversion capability, and two manufacturer-validated alternative parts for direct design-in evaluation.
Technical Context
The CD4050BDRG4 implements six independent noninverting buffer stages with symmetrical output drive strength and rail-to-rail input tolerance up to VCC. Its input high threshold (VIH) is 3.5V min at VCC = 5V, enabling reliable interfacing with 3.3V or 5V logic families while powered from higher supply rails.
Each buffer provides low-output impedance (VOL ≤ 0.05V at IOL = 3.2mA), high-input impedance (IIN ≤ 0.1µA at 18V, –55°C), and propagation delays of 70–140ns (tPLH/tPHL) under 5V/50pF conditions - optimized for noise-immune level shifting without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Noninverting hex buffer for logic-level translation and TTL load driving |
| Supply Voltage Range | 3V to 18V - enables direct interface between 3.3V/5V controllers and 12V/15V peripherals |
| Output Sink Current | ≥3.2mA at VCC = 5V, TA = 25°C - sufficient to drive two standard TTL loads directly |
| Input Leakage Current | ≤0.1µA at 18V, –55°C - ensures stable operation in high-impedance sensing or battery-powered circuits |
| Propagation Delay | 70–140ns (tPLH/tPHL) at VCC = 5V, CL = 50pF - suitable for medium-speed digital control and address/data bus buffering |
| Operating Temperature | –55°C to +125°C - qualified for automotive under-hood, industrial motor control, and aerospace environments |
| VOL (Max) | 0.05V at IOL = 3.2mA - guarantees solid LOW-state margin for downstream TTL inputs |
Pinout & Package
CD4050BDRG4 is housed in a 16-pin SOIC (D) package measuring 9.90mm × 3.91mm, with gull-wing leads and RoHS-compliant NiPdAu finish. Thermal resistance RθJA = 81.6°C/W supports moderate power dissipation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Positive supply rail | Single power input; must be bypassed with 0.1µF capacitor near pin for noise immunity |
| 2 (G) | Noninverting output 1 | Buffered replica of input A; drives TTL/DTL loads directly |
| 3 (A) | Input 1 | CMOS-compatible input; VIH ≥ 3.5V at VCC = 5V, no overvoltage tolerance beyond VCC |
| 4 (H) | Noninverting output 2 | Buffered replica of input B; electrically isolated from other outputs |
| 5 (B) | Input 2 | Independent input channel; tied to GND or VCC if unused to prevent floating |
| 6 (I) | Noninverting output 3 | Output stage with identical DC/AC specs as G and H |
| 7 (C) | Input 3 | Third input; supports logic-level translation from 3.3V sources to 5V/12V domains |
| 8 (VSS) | Negative supply / ground | Reference return path; requires low-impedance connection to system ground plane |
| 9 (D) | Input 4 | Fourth input; compatible with slow-rising signals per TI's floating-input guidelines |
| 10 (J) | Noninverting output 4 | Drives loads up to 24mA total across all six buffers (per device absolute max) |
| 11 (E) | Input 5 | Fifth input; shares same VIH/VIL thresholds and leakage spec as A–D |
| 12 (K) | Noninverting output 5 | Provides rail-to-rail output swing: VOH ≥ 4.95V at VCC = 5V |
| 14 (F) | Input 6 | Sixth input; fully characterized for –55°C to +125°C operation |
| 15 (L) | Noninverting output 6 | Final buffer stage; matches tPLH/tPHL specs of earlier outputs |
| 13, 16 (NC) | No connection | Internally unconnected; may be left floating or grounded - no electrical impact |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply level translation | Accepts input voltages up to VCC, enabling 3.3V→5V, 5V→12V, or 12V→15V translation without dual supplies |
| High sink current drive | Delivers ≥3.2mA per output at 5V - eliminates need for discrete transistor drivers in TTL interfacing |
| Ultra-low input leakage | ≤0.1µA at 18V and –55°C - preserves signal integrity in high-impedance sensor or battery-monitoring circuits |
| Wide temperature qualification | Specified from –55°C to +125°C - meets extended industrial and automotive under-hood requirements |
| Rail-to-rail output swing | VOH ≥ 4.95V and VOL ≤ 0.05V at VCC = 5V - ensures full noise margin for downstream TTL receivers |
Applications
| Microcontroller I/O Expansion | Industrial Sensor Interface |
|---|---|
Use Scenario: A 3.3V ARM Cortex-M0 microcontroller needs to drive six 5V TTL inputs on legacy PLC modules. IC Role / Device Role / Timing Role: CD4050BDRG4 acts as a noninverting level-shifting buffer, translating 3.3V logic highs to 5V-compatible outputs while maintaining timing integrity. Use Value: Eliminates need for six discrete MOSFET level shifters; reduces BOM count, PCB area, and layout complexity. | Use Scenario: An analog temperature sensor with open-collector output requires pull-up to 12V, but its controller operates at 3.3V. IC Role / Device Role / Timing Role: CD4050BDRG4 buffers and translates the 12V sensor signal down to 3.3V logic levels for safe MCU input. Use Value: Provides robust voltage translation without external resistors or clamping diodes - simplifies isolation and improves ESD resilience. |
| Automotive Body Control Module | Legacy Equipment Retrofit |
Use Scenario: A vehicle BCM uses 12V logic for lamp drivers but integrates a 5V CAN microcontroller. IC Role / Device Role / Timing Role: CD4050BDRG4 converts 5V control signals to 12V-compatible levels for direct connection to lamp driver ICs. Use Value: Enables seamless integration without redesigning power domains; supports –40°C to +125°C ambient operation. | Use Scenario: Upgrading a 1980s industrial panel with modern 3.3V FPGA while retaining original 5V DTL logic boards. IC Role / Device Role / Timing Role: CD4050BDRG4 serves as bidirectional buffer (with external direction control) to interconnect mismatched logic families. Use Value: Preserves legacy hardware investment; avoids costly board replacement or custom ASIC development. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4050BE | Same function and pinout; PDIP-16 package instead of SOIC-16; higher RθJA (49.5°C/W vs 81.6°C/W) | Preferred for through-hole prototyping or legacy wave-solder assembly; not suitable for space-constrained SMT designs | Select CD4050BE only when manual assembly or socket-based testing is required. |
| SN74HC244N | Octal noninverting buffer; 2V–6V supply; lower drive (±7.8mA); no high-voltage translation capability | Optimized for 3.3V/5V-only systems; lacks 12V/15V compatibility and wide-temp rating | Choose SN74HC244N only for cost-sensitive, low-voltage consumer applications where voltage translation is unnecessary. |
Compared with CD4050BE and SN74HC244N, CD4050BDRG4 uniquely combines SOIC-16 packaging, 3V–18V operation, –55°C to +125°C qualification, and TTL-load drive - making it the only option for high-reliability, multi-voltage industrial retrofits.
Availability
CD4050BDRG4 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, industrial sensor interface, automotive body control modules, and legacy equipment retrofit requiring stable component supply across extended temperature and voltage ranges.
Supply support for CD4050BDRG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
CD4050BDRG4 belongs to TI's legacy CMOS logic family, engineered for robust voltage-level translation and TTL/DTL interfacing in harsh environments - emphasizing reliability, wide supply range, and long-term manufacturability.
FAQ
What is the maximum supply voltage supported by CD4050BDRG4?
CD4050BDRG4 supports a maximum supply voltage of 18V under recommended operating conditions, with absolute maximum rating at 20V. Operation above 18V is not guaranteed and may reduce reliability. The device is fully characterized from 3V to 18V, enabling use in 5V, 12V, and 15V systems without level-shifting circuitry - a key advantage over 5V-only logic families like 74HC.
Can CD4050BDRG4 translate 3.3V logic to 5V TTL levels?
Yes, CD4050BDRG4 can reliably translate 3.3V logic to 5V TTL levels when powered from a 5V supply. Its VIH(min) is 3.5V at VCC = 5V, ensuring recognition of 3.3V HIGH inputs, and its VOH(min) is 4.95V - well within TTL's 2.4V minimum HIGH threshold. This makes CD4050BDRG4 ideal for interfacing modern low-voltage MCUs with legacy 5V TTL peripherals.
Is CD4050BDRG4 pin-compatible with CD4010B?
Yes, CD4050BDRG4 is pin-compatible with CD4010B and is explicitly designated by Texas Instruments as its replacement. Both share identical 16-pin SOIC (D) pinout, function table, and electrical behavior. TI states that CD4050BDRG4 "can be substituted for [CD4010B] in existing as well as new designs" - confirming drop-in compatibility without PCB changes.
What is the input leakage current specification for CD4050BDRG4 at 125°C?
At TA = 125°C and VCC = 18V, CD4050BDRG4 exhibits a maximum input leakage current of ±1µA, as specified in Section 5.5 of the datasheet. This ultra-low leakage ensures stable operation in high-temperature sensor conditioning or battery-monitoring circuits where input bias errors must be minimized - significantly better than typical bipolar-input alternatives.
Does CD4050BDRG4 require external pull-up or pull-down resistors on unused inputs?
Yes, all unused inputs on CD4050BDRG4 must be externally tied to either VCC or VSS (GND) to prevent floating states, as stated in Section 8.4.1 of the datasheet. Floating CMOS inputs cause increased power consumption, noise susceptibility, and potential oscillation. TI recommends connecting unused pins directly to supply rails - no resistor required - due to the device's high input impedance and internal protection structure.
CD4050BDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 6
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Push-Pull
- Current - Output High, Low:
- 8mA, 48mA
- Voltage - Supply:
- 3V ~ 18V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CD4050BDRG4 FAQ
1.How can I place an order for CD4050BDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4050BDRG4 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 CD4050BDRG4 reliable?
The price and inventory of CD4050BDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4050BDRG4 is usually 5 days.
3.What payment methods are accepted for CD4050BDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4050BDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4050BDRG4?
CD4050BDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4050BDRG4 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 CD4050BDRG4?
For technical support, including CD4050BDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4050BDRG4 requirements.
6.How does Aetrix verify that CD4050BDRG4 is sourced from the original manufacturer or authorized distributors?
All CD4050BDRG4 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 CD4050BDRG4 meets industry standards.
7.What is the process for return or replacement of CD4050BDRG4?
All CD4050BDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with CD4050BDRG4, 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 CD4050BDRG4 part is unused and in its original packaging.
Return procedure for CD4050BDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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