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Texas Instruments CD74HC4050EG4
- Part No.:
- CD74HC4050EG4
- Manufacturer:
- Texas Instruments
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
CD74HC4050EG4.pdf
- Description:
- IC BUFFER NON-INVERT 6V 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,294
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Product details
Overview
CD74HC4050EG4 from Texas Instruments is a non-inverting hex buffer IC designed for logic-level translation and signal buffering in mixed-voltage systems. It supports 2V–6V VCC operation, accepts input voltages up to 15V (enabling high-to-low level conversion), and delivers 6ns typical propagation delay at 5V/15pF. It operates across –55°C to 125°C and drives up to 15 LSTTL loads.
For engineers reviewing the CD74HC4050EG4 datasheet, CD74HC4050EG4 pinout, CD74HC4050EG4 application, or CD74HC4050EG4 equivalent, key selection considerations include its 15V-tolerant inputs, rail-to-rail output swing, wide temperature range, and compatibility with both HC-logic and legacy TTL loads in industrial control, sensor interfacing, and microcontroller I/O expansion designs.
Technical Context
The CD74HC4050EG4 implements six independent non-inverting buffer stages using high-speed silicon-gate CMOS technology. Its modified input protection structure enables safe operation with input voltages exceeding VCC - up to 15V - while powered from a lower supply (e.g., 3.3V or 5V), making it suitable for bidirectional voltage translation without external components.
Each buffer features balanced propagation delay (tPLH ≈ tPHL) and transition times (tTLH ≈ tTHL), with specified performance across full temperature and voltage ranges. Input leakage remains ≤±1 µA at 6V, and output drive capability is ±25mA per pin under DC conditions, supporting robust fanout and noise immunity (NIL/NIL = 30% of VCC at 5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2V to 6V - Enables operation from low-power 3.3V rails up to legacy 5V systems. |
| Input Voltage Max | 15V - Allows direct interface to higher-voltage logic (e.g., 12V sensors or industrial I/O) without clamping diodes. |
| Propagation Delay | 6ns typical at VCC = 5V, CL = 15pF - Supports high-speed digital signal routing in timing-critical paths. |
| Output Drive | ±25mA per pin - Sufficient to drive 15 LSTTL loads or moderate capacitive loads without external buffers. |
| Operating Temp | –55°C to +125°C - Qualified for extended industrial, automotive under-hood, and military-grade applications. |
| Input Leakage | ≤±1 µA at 6V - Minimizes loading on high-impedance sources such as analog comparators or open-drain signals. |
| Noise Immunity | NIL/NIL = 30% of VCC at 5V - Resists false triggering in electrically noisy environments like motor controls. |
Pinout & Package
CD74HC4050EG4 is supplied in a 16-pin plastic dual in-line package (PDIP), with 0.3-inch body width and standard through-hole mounting. Pin 1 is located at the top-left corner adjacent to the notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A, 4A, 5A, 6A | Buffer Inputs | Independent logic inputs accepting 0–15V; tolerant of voltages above VCC for level translation. |
| 1Y, 2Y, 3Y, 4Y, 5Y, 6Y | Buffer Outputs | Non-inverting outputs swinging from GND to VCC; each capable of ±25mA DC drive. |
| VCC | Positive Supply | CMOS core supply pin (2–6V); powers internal logic and defines output high level. |
| GND | Ground Reference | Common return path for all inputs, outputs, and internal circuitry. |
| NC (Pins 9 & 13) | No Connect | Internally unconnected; must remain floating - no external connection required or recommended. |
Key Features
| Feature | Design Value |
|---|---|
| High-Voltage Input Tolerance | Supports 15V inputs while operating from 3.3V or 5V supply - eliminates need for external level-shifting circuitry. |
| Rail-to-Rail Output Swing | Outputs swing fully from GND to VCC - ensures maximum noise margin and compatibility with downstream CMOS/TTL inputs. |
| Wide Temperature Operation | –55°C to +125°C rating - validated for use in harsh environments including industrial automation and aerospace subsystems. |
| Low Quiescent Current | ICC ≤ 40 µA max over full temperature range - reduces standby power in battery-backed or energy-sensitive systems. |
| ESD-Protected Inputs | Modified input structure withstands negative ESD events - improves reliability during handling and system integration. |
Applications
| Industrial Sensor Interface | Microcontroller I/O Expansion |
|---|---|
|
Use Scenario: Interfacing 12V industrial proximity sensors to a 3.3V microcontroller GPIO bank. IC Role / Device Role / Timing Role: Non-inverting level translator and signal conditioner - shifts 0–12V sensor outputs down to 0–3.3V logic levels without inversion or timing distortion. Use Value: Eliminates discrete resistor-divider networks and Schottky clamps, reducing BOM count and PCB area while preserving signal integrity and propagation delay consistency. |
Use Scenario: Expanding limited GPIO count on an ARM Cortex-M0+ MCU for driving multiple LED indicators and relay drivers. IC Role / Device Role / Timing Role: Signal buffer and fanout amplifier - isolates MCU pins from capacitive and current loads while maintaining logic state fidelity. Use Value: Prevents MCU output voltage droop and timing skew when driving >3 parallel loads, enabling reliable simultaneous control of six independent peripherals. |
| Legacy System Integration | Automotive Body Control Module |
|
Use Scenario: Connecting modern 3.3V FPGA I/O banks to legacy 5V TTL bus lines in test equipment upgrades. IC Role / Device Role / Timing Role: Bidirectional voltage-compatible buffer - provides level-adapted, non-inverting signal pass-through between mismatched logic families. Use Value: Avoids timing violations caused by RC-based translators; guarantees sub-10ns delay matching across all six channels for synchronous bus operation. |
Use Scenario: Conditioning switch inputs from 12V vehicle battery circuits before feeding into a 5V automotive microcontroller's wake-up interrupt pins. IC Role / Device Role / Timing Role: High-voltage tolerant input conditioner - suppresses transients and translates 0–12V switch states to clean 0–5V logic levels. Use Value: Withstands load-dump surges up to 15V and operates reliably at –40°C to +125°C, meeting AEC-Q100 stress requirements for under-hood electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G17DBVR | Single-channel Schmitt-trigger buffer; 1.65–5.5V VCC; max input 5.5V only. | Limited to single-bit conditioning; lacks 15V input tolerance and multi-channel integration. | Choose for low-power, noise-immune single-signal debouncing where voltage translation is not required. |
| CD74HC4049E | Inverting hex buffer; identical pinout, package, and voltage specs; same 15V input tolerance. | Requires logic inversion in signal path - unsuitable where polarity preservation is mandatory. | Select only when system architecture accommodates inverted logic; otherwise, CD74HC4050EG4 is the functional match. |
Compared with SN74LVC1G17DBVR and CD74HC4049E, the CD74HC4050EG4 uniquely combines six non-inverting channels, 15V input tolerance, and full industrial temperature support in a single PDIP package - making it the only drop-in solution for multi-channel high-voltage-to-low-voltage translation without logic inversion.
Availability
CD74HC4050EG4 is available at Aetrix Electronics and suitable for industrial sensor interfacing, automotive body control modules, legacy system integration, and microcontroller I/O expansion requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74HC4050EG4 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 decades of heritage in high-reliability logic families including the 74HC series.
The CD74HC4050EG4 belongs to TI's industry-standard 74HC logic family, engineered for robust performance in mixed-voltage digital systems - particularly where level translation, noise immunity, and extended temperature operation are critical.
FAQ
What is the maximum input voltage the CD74HC4050EG4 can safely accept?
The CD74HC4050EG4 supports an absolute maximum input voltage of 15V, independent of VCC. This allows direct connection to higher-voltage sources (e.g., 12V sensors or industrial I/O) while operating from a lower supply such as 3.3V or 5V - a key feature confirmed in the Absolute Maximum Ratings table of the TI datasheet SCHS205I.
Does the CD74HC4050EG4 require external pull-up or pull-down resistors on unused inputs?
No, the CD74HC4050EG4 does not require external termination on unused inputs. Its CMOS inputs have negligible static current (≤±1 µA), and floating inputs are electrically stable. However, for best noise immunity in high-noise environments, tying unused inputs to VCC or GND is still recommended - a practice consistent with standard CMOS design guidelines applied to the CD74HC4050EG4.
Can the CD74HC4050EG4 be used as a level shifter between 12V and 3.3V logic domains?
Yes, the CD74HC4050EG4 is explicitly designed for this purpose. With 15V-tolerant inputs and a VCC supply set to 3.3V, it translates 0–12V input signals to clean 0–3.3V outputs. The device's modified input protection structure - documented in the Functional Description section - ensures safe, reliable operation without external components, distinguishing it from standard logic buffers.
What is the thermal resistance (θJA) of the CD74HC4050EG4 in its PDIP package?
The CD74HC4050EG4 in the PDIP (N) package has a junction-to-ambient thermal resistance (θJA) of 67°C/W, as specified in the Thermal Information table of the datasheet. This value assumes standard JEDEC 2-layer board conditions and is critical for calculating junction temperature rise under sustained output loading - especially when driving multiple LSTTL loads near maximum current limits.
Is the CD74HC4050EG4 pin-compatible with the CD74HC4049E?
Yes, the CD74HC4050EG4 and CD74HC4049E share identical pinouts and package dimensions (16-pin PDIP), differing only in logic function: CD74HC4050EG4 provides non-inverting buffers, while CD74HC4049E provides inverting buffers. This mechanical and electrical compatibility enables direct substitution in layouts where signal polarity can be adjusted in firmware or upstream logic - a detail confirmed in TI's ordering information and pin diagrams.
CD74HC4050EG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- 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:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
CD74HC4050EG4 FAQ
1.How can I place an order for CD74HC4050EG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC4050EG4 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 CD74HC4050EG4 reliable?
The price and inventory of CD74HC4050EG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC4050EG4 is usually 5 days.
3.What payment methods are accepted for CD74HC4050EG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HC4050EG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HC4050EG4?
CD74HC4050EG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC4050EG4 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 CD74HC4050EG4?
For technical support, including CD74HC4050EG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC4050EG4 requirements.
6.How does Aetrix verify that CD74HC4050EG4 is sourced from the original manufacturer or authorized distributors?
All CD74HC4050EG4 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 CD74HC4050EG4 meets industry standards.
7.What is the process for return or replacement of CD74HC4050EG4?
All CD74HC4050EG4 units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC4050EG4, 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 CD74HC4050EG4 part is unused and in its original packaging.
Return procedure for CD74HC4050EG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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