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Texas Instruments CD4050BPW
- Part No.:
- CD4050BPW
- Manufacturer:
- Texas Instruments
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CD4050BPW.pdf
- Description:
- IC BUFFER NON-INVERT 18V 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:713
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Product details
Overview
CD4050BPW from Texas Instruments is a noninverting hex buffer IC designed for CMOS-to-TTL/DTL logic-level conversion using a single supply (3V–18V). It delivers 24mA sink current at 15V, supports –55°C to 125°C operation, and features 1µA max input current at 18V over full temperature range - enabling direct drive of two TTL loads in industrial control and legacy interface applications.
For engineers reviewing the CD4050BPW datasheet, CD4050BPW pinout, CD4050BPW application, or CD4050BPW equivalent, this page provides verified pin functions, voltage transfer characteristics, thermal resistance (RθJA = 108.4°C/W), propagation delay (tPHL = 15–50 ns), and real-world level-shifting use cases without requiring external biasing or dual supplies.
Technical Context
The CD4050BPW implements six independent noninverting buffer stages with symmetrical output drive capability and rail-to-rail input tolerance up to VCC. Its logic-level conversion operates with VIH(Min) = 3.5V (at VCC = 5V) and VIL(Max) = 1.5V, allowing reliable interfacing between 3.3V/5V CMOS controllers and 5V TTL peripherals.
Each buffer exhibits low quiescent current (0.02 µA typical at 25°C), high noise immunity, and input clamp diodes referenced to VCC - requiring input signals to remain ≤ VCC. The device replaces CD4010B with identical pinout and enhanced sink/source drive across extended voltage and temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 18V - enables single-supply operation in mixed-voltage systems without level translators. |
| Output Sink Current | 24mA at VCC = 15V, VOUT = 1.5V - sufficient to directly drive two standard TTL loads (IOL ≥ 16mA). |
| Propagation Delay | tPHL = 15ns (min), tPLH = 30ns (min) at VCC = 15V - supports reliable signal buffering up to ~10 MHz in clean digital paths. |
| Input Current | ±0.1µA max at 18V, –55°C to 125°C - ensures minimal loading on high-impedance CMOS sources. |
| Operating Temperature | –55°C to +125°C - qualified for automotive under-hood, industrial PLC, and aerospace power management subsystems. |
| Input Capacitance | 5pF typical - reduces capacitive loading on driving gates and preserves signal edge integrity. |
| Quiescent Current | 0.02µA typical at 25°C, VCC = 5V - enables ultra-low-power standby in battery-backed monitoring circuits. |
Pinout & Package
PW package: 16-pin TSSOP (5.00mm × 4.40mm), thin shrink small-outline package with exposed pad not connected internally. Pin 16 (NC) and Pin 13 (NC) are unconnected; VCC (Pin 1) and VSS (Pin 8) must be decoupled with 0.1µF ceramic capacitors placed adjacent to the package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A (Pin 3) | Input 1 | CMOS-compatible input accepting 0–VCC logic levels; must not exceed VCC due to internal clamp diodes. |
| G (Pin 2) | Output 1 | Noninverting buffered output; drives TTL/DTL loads directly with VOH ≥ 4.95V (VCC = 5V). |
| B (Pin 5) | Input 2 | Independent input channel; electrically isolated from other inputs unless externally tied. |
| H (Pin 4) | Output 2 | Matched output stage with identical DC/AC specs to G; supports parallel load sharing. |
| VCC (Pin 1) | Positive Supply | Single power rail (3–18V); all six buffers share this supply - no separate logic or I/O rails required. |
| VSS (Pin 8) | Negative Supply / Ground | Reference node for all inputs and outputs; must be low-impedance to sustain sink current performance. |
| NC (Pins 13, 16) | No Connection | Internally unconnected; may be left floating or tied to VSS for mechanical stability - no electrical effect. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply level translation | Converts 3.3V/5V CMOS logic to 5V TTL using only VCC - eliminates need for dual-rail or resistor-divider interfaces. |
| High sink current drive | 24mA output capability at 15V allows direct connection to TTL inputs without external pull-up resistors or driver transistors. |
| Rail-to-rail input tolerance | Accepts input voltages up to VCC (not beyond), simplifying interface design while maintaining robustness against overshoot. |
| Wide temperature qualification | Specified from –55°C to +125°C - suitable for deployment in uncontrolled environments like motor drives and outdoor instrumentation. |
| Low input leakage | ≤0.1µA max over full temperature and voltage range - prevents false triggering in high-impedance sensor or switch matrix applications. |
Applications
| Industrial PLC I/O Expansion | Legacy Microcontroller Bus Interface |
|---|---|
Use Scenario: Interfacing a modern 3.3V ARM microcontroller GPIO bank to legacy 5V TTL-based relay modules and optocoupler inputs in factory automation cabinets. IC Role / Device Role / Timing Role: Noninverting buffer providing voltage translation and current gain; each CD4050BPW handles six independent signal lines with matched propagation delays. Use Value: Eliminates discrete transistor arrays or dedicated level-shifter ICs, reducing BOM count and PCB area while maintaining timing predictability across all six channels. | Use Scenario: Driving multiple 74LS-series address/data bus lines from a low-power MSP430 MCU operating at 3.6V in a portable test instrument. IC Role / Device Role / Timing Role: Hex buffer isolating MCU outputs from bus capacitance and fan-out demands; operates within 15ns tPHL/tPLH window at 5V VCC. Use Value: Enables direct connection without timing skew between channels, preserving setup/hold margins on synchronous bus transactions. |
| Automotive Body Control Module | High-Voltage Sensor Signal Conditioning |
Use Scenario: Level-shifting PWM signals from an automotive-grade 5V microcontroller to 12V solenoid drivers in a body control unit exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Robust noninverting buffer rated for –40°C to +125°C; withstands 12V VCC operation with 10mA sink per output into MOSFET gate drivers. Use Value: Replaces discrete FET+resistor solutions with AEC-Q100-compatible performance and guaranteed parametric behavior across temperature extremes. | Use Scenario: Buffering analog-comparator outputs (0–15V swing) into a 5V ADC input stage in a high-voltage power supply monitor. IC Role / Device Role / Timing Role: Logic-level translator converting comparator hysteresis thresholds to clean 5V logic; VIH(Min) = 11V at VCC = 15V ensures reliable detection. Use Value: Avoids external voltage dividers that degrade noise immunity and adds no propagation delay uncertainty to fault-response timing. |
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 functionality and pinout in 16-pin PDIP (6.35mm × 19.30mm); higher RθJA (49.5°C/W) but better thermal mass for low-duty-cycle use. | Through-hole mounting; suited for prototyping, repair, or legacy board rework where TSSOP reflow is unavailable. | Select CD4050BE when manual soldering or socket-based testing is required; verify layout clearance for larger footprint. |
| SN74HC244N | Octal noninverting buffer (8 channels), 2V–6V supply, 3-state outputs; no high-voltage support (max VCC = 6V), lower sink current (24mA only at 4.5V). | Designed for 3.3V/5V digital buses with output enable control; lacks CD4050BPW's 3–18V range and true level-shifting capability. | Choose SN74HC244N for cost-sensitive 5V-only systems needing 3-state control; avoid for >6V or mixed-voltage translation. |
Compared with CD4050BE and SN74HC244N, the CD4050BPW uniquely combines TSSOP space efficiency, 18V operation, and guaranteed 24mA sink at 15V - making it optimal for compact, high-voltage industrial interfaces where thermal dissipation and voltage flexibility are critical.
Availability
CD4050BPW is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, legacy microcontroller bus interface, and high-voltage sensor signal conditioning requiring stable component supply across extended temperature and voltage ranges.
Supply support for CD4050BPW 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.
The CD4050B product line targets legacy interface bridging and high-voltage logic translation, emphasizing single-supply simplicity, wide temperature resilience, and direct TTL/DTL compatibility - continuing the CD4000-series heritage for robust, long-lifecycle designs.
FAQ
What is the maximum supply voltage rating for CD4050BPW?
The CD4050BPW has an absolute maximum supply voltage (VCC to VSS) of 20V, with recommended operating range from 3V to 18V. Operation at 20V is limited to short-duration transients; sustained use above 18V risks exceeding absolute maximum ratings and may compromise reliability or parametric performance over temperature.
Can CD4050BPW drive TTL loads directly without external components?
Yes, CD4050BPW can drive two standard TTL loads directly: at VCC = 5V, it guarantees IOL ≥ 3.2mA and VOL ≤ 0.05V, meeting TTL input requirements. At VCC = 15V, it delivers IOL ≥ 24mA with VOL ≤ 0.05V - sufficient for most 5V TTL families without pull-up resistors or buffer transistors.
Is CD4050BPW pin-compatible with older CD4010B devices?
Yes, CD4050BPW is pin-compatible with CD4010B in the same package variant (TSSOP-16). Both share identical pin numbering, function mapping (A/G, B/H, etc.), and NC pin locations (13, 16). TI explicitly states CD4050B is the designated replacement for CD4010B in new and existing designs.
What is the thermal resistance (RθJA) of CD4050BPW in the PW package?
The CD4050BPW in the PW (TSSOP-16) package has a junction-to-ambient thermal resistance (RθJA) of 108.4°C/W, measured per JESD 51-7. This value assumes standard JEDEC high-K test board conditions; actual board-level performance depends on copper area, via count, and airflow.
Does CD4050BPW support input voltages higher than VCC?
No, CD4050BPW does not support input voltages exceeding VCC. Internal input clamp diodes connect to VCC, so applying VIN > VCC risks forward-biasing these diodes and causing excessive current flow. Inputs must remain within 0V to VCC for safe and specified operation.
CD4050BPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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-TSSOP
CD4050BPW FAQ
1.How can I place an order for CD4050BPW through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4050BPW 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 CD4050BPW reliable?
The price and inventory of CD4050BPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4050BPW is usually 5 days.
3.What payment methods are accepted for CD4050BPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4050BPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4050BPW?
CD4050BPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4050BPW 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 CD4050BPW?
For technical support, including CD4050BPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4050BPW requirements.
6.How does Aetrix verify that CD4050BPW is sourced from the original manufacturer or authorized distributors?
All CD4050BPW 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 CD4050BPW meets industry standards.
7.What is the process for return or replacement of CD4050BPW?
All CD4050BPW units undergo pre-shipment inspection (PSI). If there is an issue with CD4050BPW, 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 CD4050BPW part is unused and in its original packaging.
Return procedure for CD4050BPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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