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Texas Instruments CD4050BDE4
- Part No.:
- CD4050BDE4
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD4050BDE4.pdf
- Description:
- IC BUFFER NON-INVERT 18V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,999
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Product details
Overview
CD4050BDE4 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 output low voltage, and supports –55°C to +125°C industrial temperature range - used in voltage translation interfaces for microcontroller I/O expansion and legacy logic interfacing.
For engineers reviewing the CD4050BDE4 datasheet, CD4050BDE4 pinout, CD4050BDE4 application, or CD4050BDE4 equivalent, this page provides verified functional role, validated DC/AC specifications across supply voltages, confirmed SOIC-16 package mapping, real-world level-shifting use cases, and two technically documented alternative parts with explicit functional and application differences.
Technical Context
The CD4050BDE4 implements six independent noninverting buffer stages in a single monolithic CMOS die, each with symmetrical output drive capability and input thresholds referenced to VCC. Its logic-level conversion capability arises from input high-voltage tolerance (VIH up to 12.5V at VCC = 15V) while maintaining TTL-compatible VOL ≤ 0.05V and VOH ≥ 4.95V at VCC = 5V.
It uses standard CMOS gate structures with no internal clamping diodes to VCC - inputs must remain ≤ VCC - and achieves propagation delays of 70–140ns (tPLH) and 55–110ns (tPHL) at 5V, scaling inversely with supply voltage. Quiescent current remains ≤0.02µA at 25°C across 5V/10V/15V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 18V - enables direct interface between 3.3V/5V microcontrollers and 12V industrial logic without external level shifters. |
| Output Sink Current (IOL) | ≥3.2mA at VCC = 5V, TA = 25°C - sufficient to directly drive two standard TTL loads (each ~1.6mA). |
| Output Low Voltage (VOL) | ≤0.05V at VCC = 5V - ensures robust noise margin (>0.4V) against TTL VIH(min) = 2.0V. |
| Propagation Delay (tPLH) | 70–140ns at VCC = 5V - defines maximum operating frequency (~3.6MHz) for clean digital signal buffering. |
| Input Current (IIN) | ±0.1µA max at 18V, –55°C to +125°C - minimizes loading on high-impedance sensor or analog switch outputs. |
| Operating Temperature | –55°C to +125°C - qualified for under-hood automotive, industrial control, and military-grade embedded systems. |
| Input Capacitance (CIN) | 5–7.5pF - low capacitive loading preserves signal integrity in high-speed or long-trace applications. |
Pinout & Package
CD4050BDE4 is supplied in a 16-pin SOIC (D) package measuring 9.90mm × 3.91mm, with standard JEDEC MS-012AC footprint and RoHS-compliant NiPdAu lead finish. Pin 1 is bottom-left corner (notch-side indicator), and pins are numbered counter-clockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Positive supply rail | Single power connection; requires local 0.1µF bypass capacitor to GND for stable operation. |
| 2 (G) | Noninverting output 1 | Buffered replica of input A; drives loads up to 3.2mA sink at 5V. |
| 3 (A) | Input 1 | CMOS input with VIH(min) = 3.5V at VCC = 5V; must not exceed VCC. |
| 4 (H) | Noninverting output 2 | Buffered replica of input B; electrically identical to pin 2. |
| 5 (B) | Input 2 | Independent CMOS input; tied to VCC or GND if unused to prevent floating. |
| 6 (I) | Noninverting output 3 | Buffered replica of input C; shares same drive strength and timing as other outputs. |
| 7 (C) | Input 3 | Third independent input channel; supports mixed-voltage domain translation when VCC ≠ input logic level. |
| 8 (VSS) | Negative supply / ground | Reference return path for all inputs and outputs; must be low-impedance. |
| 9 (D) | Input 4 | Fourth input; usable for parallel data bus conditioning or address line buffering. |
| 10 (J) | Noninverting output 4 | Buffered replica of input D; matches AC/DC specs of pins 2/4/6. |
| 11 (E) | Input 5 | Fifth input; supports multi-channel isolation in sensor interface modules. |
| 12 (K) | Noninverting output 5 | Buffered replica of input E; fully characterized for –55°C to +125°C operation. |
| 14 (F) | Input 6 | Sixth input; enables full hex-buffer utilization in I/O expander designs. |
| 15 (L) | Noninverting output 6 | Buffered replica of input F; completes the set of six independent noninverting drivers. |
| 13, 16 (NC) | No connection | Internally unconnected; PCB pads may be left unpopulated or grounded for mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Noninverting hex buffer architecture | Six independent channels eliminate need for external inverters in signal conditioning paths where polarity preservation is required. |
| Single-supply logic-level translation | Accepts input high levels up to 12.5V (at VCC = 15V) while outputting TTL-compatible levels - enables 12V sensor interfacing to 5V MCU without external resistors or translators. |
| High sink current (≥3.2mA @ 5V) | Directly drives two standard TTL loads per channel, reducing component count in mixed-logic-system backplanes. |
| Ultra-low input current (≤0.1µA) | Prevents loading of high-impedance sources such as potentiometers, thermistors, or CMOS analog switches in precision measurement circuits. |
| Extended temperature range (–55°C to +125°C) | Validated for deployment in automotive engine control units, industrial PLC I/O modules, and aerospace telemetry interfaces. |
Applications
| Industrial Sensor Interface | Microcontroller I/O Expansion |
|---|---|
Use Scenario: Interfacing 12V analog sensor outputs (e.g., pressure transducers) to a 3.3V/5V microcontroller ADC input via resistor-divider and buffer. IC Role / Device Role / Timing Role: Noninverting buffer isolates the divider network, prevents loading-induced offset error, and translates 0–12V sensor swing to 0–5V logic-compatible range. Use Value: Eliminates need for active op-amp level shifters; maintains signal fidelity with <0.05V VOL and <140ns delay across full temperature range. | Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU by adding six additional push-pull digital outputs for LED indicators and relay control. IC Role / Device Role / Timing Role: Hex buffer acts as level-translating driver stage, translating 3.3V MCU outputs to 5V/12V logic levels compatible with discrete MOSFET gates or optocouplers. Use Value: Provides 3.2mA sink per channel at 5V - sufficient to drive LEDs directly or bias optocoupler inputs without external transistors. |
| Legacy Logic System Integration | Automotive Body Control Module |
Use Scenario: Connecting modern 3.3V FPGA I/O banks to legacy 5V TTL-based display controller and keyboard matrix decoder. IC Role / Device Role / Timing Role: Bidirectional level translator (input-tolerant, output-TTL-compliant) ensuring reliable communication across voltage domains. Use Value: VIH(min) = 3.5V at VCC = 5V guarantees recognition of 3.3V FPGA outputs; VOL ≤ 0.05V satisfies TTL VIH(min) = 2.0V with >1.95V noise margin. | Use Scenario: Driving 12V incandescent lamp loads and solenoid valves from a 5V automotive microcontroller in door module PCB. IC Role / Device Role / Timing Role: High-current buffer stage providing controlled turn-on/turn-off of lamps via external N-channel MOSFETs, with logic-level translation from MCU to gate driver. Use Value: 24mA sink capability at VCC = 15V (per channel) enables direct gate charging of small-signal MOSFETs without gate driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar noninverting hex buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4050BM96 | Same function, SOIC-16 package, but rated only to +85°C ambient and specified with lower IOL (2.4mA min at 5V/25°C). | Limited to commercial-temperature applications; unsuitable for under-hood or industrial environments requiring –55°C to +125°C operation. | Select CD4050BDE4 when extended temperature qualification, higher sink current, or TI's enhanced process reliability are required. |
| MC74HC4050DR2G | High-speed CMOS (HC) variant with faster tPLH (19ns typ at 5V), but narrower VCC range (2–6V) and no 12V input tolerance. | Cannot translate 12V signals; limited to 5V-only systems; unsuitable for mixed-voltage sensor interfacing or industrial 12V logic domains. | Choose MC74HC4050DR2G only for high-speed, single-rail 5V applications where propagation delay dominates over voltage flexibility. |
Compared with CD4050BM96 and MC74HC4050DR2G, CD4050BDE4 uniquely combines wide 3–18V operation, 12.5V input tolerance at 15V VCC, –55°C to +125°C qualification, and 3.2mA minimum sink current - making it the only option among the three for robust, mixed-voltage, high-reliability embedded interfacing.
Availability
CD4050BDE4 is available at Aetrix Electronics and suitable for industrial sensor interface, microcontroller I/O expansion, legacy logic system integration, and automotive body control module applications requiring stable component supply across extended temperature ranges and mixed-voltage domains.
Supply support for CD4050BDE4 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, personal electronics, and communications markets.
CD4050BDE4 belongs to TI's legacy CMOS logic product line, engineered specifically for robust voltage-level translation, high-noise-immunity interfacing, and reliable operation in harsh thermal environments - targeting applications where long-term supply stability and extended temperature performance are critical.
FAQ
What is the maximum input voltage allowed on CD4050BDE4 inputs?
The CD4050BDE4 does not have overvoltage-tolerant inputs: absolute maximum input voltage is VCC + 0.5V. At VCC = 5V, inputs must remain ≤5.5V. However, its VIH(min) is specified up to 12.5V when VCC = 15V - meaning it can accept 12V logic signals *only* when powered at 15V. Applying 12V to inputs while VCC = 5V will damage the device due to internal clamp diode conduction. Always match input voltage range to VCC setting.
Can CD4050BDE4 drive TTL loads directly?
Yes, CD4050BDE4 can drive two standard TTL loads per channel. At VCC = 5V and TA = 25°C, its guaranteed IOL is ≥3.2mA, exceeding the 1.6mA per load requirement of LS-TTL. Its VOL ≤ 0.05V also satisfies TTL's VIH(min) = 2.0V with >1.95V noise margin. This eliminates need for additional transistor buffers in legacy system upgrades.
Is CD4050BDE4 pin-compatible with CD4010B?
Yes, CD4050BDE4 is pin-compatible with CD4010B. Both are noninverting hex buffers in 16-pin SOIC packages with identical pinout (VCC=1, G=2, A=3, H=4, B=5, I=6, C=7, VSS=8, D=9, J=10, E=11, K=12, NC=13, F=14, L=15, NC=16). TI explicitly states CD4050B replaces CD4010B in all applications, offering improved sink current and wider voltage range while maintaining drop-in compatibility.
What is the quiescent current of CD4050BDE4 at 25°C and 5V?
At VCC = 5V and TA = 25°C, the typical quiescent current (IDD) of CD4050BDE4 is 0.02µA, with a maximum of 1µA. This ultra-low standby consumption makes it ideal for battery-powered instrumentation and always-on monitoring circuits where leakage must be minimized across long idle periods.
Does CD4050BDE4 require external pull-up or pull-down resistors on unused inputs?
Yes - all unused inputs on CD4050BDE4 must be terminated to either VCC or VSS. Floating CMOS inputs cause undefined output states, increased power consumption, and potential latch-up due to intermediate voltage levels triggering both NMOS and PMOS transistors. TI recommends tying unused inputs directly to VCC or GND; no pull-up/pull-down resistors are needed unless board layout constraints require them for routing.
CD4050BDE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
CD4050BDE4 FAQ
1.How can I place an order for CD4050BDE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4050BDE4 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 CD4050BDE4 reliable?
The price and inventory of CD4050BDE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4050BDE4 is usually 5 days.
3.What payment methods are accepted for CD4050BDE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4050BDE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4050BDE4?
CD4050BDE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4050BDE4 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 CD4050BDE4?
For technical support, including CD4050BDE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4050BDE4 requirements.
6.How does Aetrix verify that CD4050BDE4 is sourced from the original manufacturer or authorized distributors?
All CD4050BDE4 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 CD4050BDE4 meets industry standards.
7.What is the process for return or replacement of CD4050BDE4?
All CD4050BDE4 units undergo pre-shipment inspection (PSI). If there is an issue with CD4050BDE4, 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 CD4050BDE4 part is unused and in its original packaging.
Return procedure for CD4050BDE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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