CD4050 Hex Buffer Comprehensive Guide

The CD4050 is a non-inverting hex buffer IC designed for efficient signal buffering and voltage-level shifting. This article provides an in-depth overview of the CD4050, including its pinout configuration, compatible alternatives, and access to the datasheet PDF from Texas Instruments.

Catalog

Overview of CD4050

The CD4050 stands out as a multipurpose component, effectively operating as both an inverting and non-inverting hexadecimal buffer. A notable trait of the device is its adeptness at performing logic-level conversion powered by a single power supply (VCC). Its ability to handle input high level (VIH) that exceeds the VCC power level makes it well-suited for applications involving voltage conversion. Functioning as a CMOS to DTL/TTL converter, it skillfully supports two DTL/TTL loads (VCC = 5V, VOL ≤ 0.4V, IOL ≥ 3.3mA). In technological evolution, this device surpasses earlier models like the CD4009UB and CD4010B.

CD4050 Pin Configuration

Pin No.	Pin Name	Description
1	Vcc	Power supply pin; provides the necessary operating voltage for the IC.
2	G = A	Logic level input (G) and its corresponding output (A).
3	A	Logic level output corresponding to input G.
4	H = B	Logic level input (H) and its corresponding output (B).
5	B	Logic level output corresponding to input H.
6	I = C	Logic level input (I) and its corresponding output (C).
7	C	Logic level output corresponding to input I.
8	Vss	Ground pin; serves as the reference point for the circuit.
9	D	Logic level output corresponding to input J.
10	J = D	Logic level input (J) and its corresponding output (D).
11	E	Logic level output corresponding to input K.
12	K = E	Logic level input (K) and its corresponding output (E).
13	NC	No connection; not used in the circuit.
14	F	Logic level output corresponding to input L.
15	L = F	Logic level input (L) and its corresponding output (F).
16	NC	No connection; not used in the circuit.

CAD Model for CD4050

Characteristics of CD4050

The CD4050 plays a role in digital electronics, noted for its ability to maintain phase congruence. Unlike the CD4049UB , which functions in the opposite manner, the CD4050 ensures consistent phase relationships. This trait makes it highly suitable for applications where uniform phase alignment is desired. Grasping its operational scope offers a deeper understanding of its adaptability in various circuit designs.

Capability for Handling High Current

The CD4050 is designed to support increased current sinking, which allows it to manage two TTL loads effortlessly. This feature becomes especially useful in situations where robust data transmission is required. By averting common issues like circuit lag, this advanced capability contributes to stable and dependable operation across multiple TTL inputs.

Facilitation of Logic Level Conversion

The CD4050 skillfully enables high-to-low logic conversion. It adeptly manages assessments involving 20V quiescent current, demonstrating its versatility across varying voltage levels.

Effective Current Management

Limited to a maximum input current of 1μA at 18V, the CD4050 impressively showcases power management efficiency. At the same voltage and a temperature of 25°C, the input current drops to 100nA. These characteristics provide more than just technical data, as they also represent a sizable reduction in energy usage and an extension of device longevity in power-sensitive situations.

Versatile Device Parameter Ratings

The CD4050 operates across a range of voltage ratings, including 5V, 10V, and 15V. Such parameters allow for remarkable flexibility and adaptability in a variety of technological applications. Whether integrated into consumer electronics or industrial systems, the ability to function efficiently across diverse voltage levels enhances its appeal, connecting disparate engineering and design needs effectively.

Technical Attributes

The Texas Instruments CD4050BE , a CMOS integrated circuit renowned for its voltage level conversion capabilities, plays a role in mixed-voltage systems. Comprehending its technical details enhances design efficacy and eases troubleshooting across a variety of applications.

Type	Parameter
Lifecycle Status	ACTIVE (Last Updated: 5 days ago)
Factory Lead Time	6 Weeks
Contact Plating	Gold
Mount	Through Hole
Mounting Type	Through Hole
Package / Case	16-DIP (0.300, 7.62mm)
Number of Pins	16
Operating Temperature	-55°C~125°C TA
Packaging	Tube
Series	4000B
JESD-609 Code	e4
Part Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	16
Termination	Through Hole
ECCN Code	EAR99
Additional Feature	CMOS-TTL LEVEL TRANSLATOR
Voltage - Supply	3V~18V
Terminal Position	DUAL
Number of Functions	6
Supply Voltage	10V
Terminal Pitch	2.54mm
Base Part Number	CD4050
Pin Count	16
Output Type	Push-Pull
Operating Supply Voltage	18V
Polarity	Non-Inverting
Supply Voltage-Min (Vsup)	5V
Number of Channels	6
Load Capacitance	50pF
Propagation Delay	60 ns
Quiescent Current	20μA
Turn On Delay Time	140 ns
Logic Function	Buffer, Inverting
Number of Inputs	6
Logic Type	Buffer, Non-Inverting
Number of Bits per Element	1
Schmitt Trigger	NO
Height	5.08mm
Length	19.3mm
Width	6.35mm
Thickness	3.9mm
REACH SVHC	No SVHC
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

CD4050 Schematic Design

The schematic diagram illustrates the internal structure of the CD4050, a hex buffer commonly used for general-purpose logic-level voltage conversion and protection. At the input stage, the circuit features diodes and a resistor. The diodes are designed to protect the circuit from voltage spikes or reverse polarity by clamping the input voltage to a safe range. The resistor limits the current flowing into the input, ensuring the internal components are not damaged by excessive current.

The transistor network forms the core of the circuit's functionality. It consists of P-channel and N-channel MOSFETs configured to switch the output signal based on the input voltage. When a high voltage is applied to the input, the N-channel MOSFET turns on, pulling the output to a low state. Conversely, when the input is low, the P-channel MOSFET activates, driving the output to a high state. This arrangement allows the CD4050 to function as a buffer or inverter while maintaining signal integrity.

The output stage is equipped with additional diodes for protection. These diodes safeguard the circuit from overvoltage or reverse currents that might flow back from the connected load. The output delivers a signal that matches the logic level required by the connected system, making the CD4050 ideal for interfacing components with different voltage levels.

Powering the circuit is straightforward, with the Vcc pin connected to the supply voltage and the Vss pin serving as the ground or negative terminal. The CD4050 operates within a defined voltage range, typically between 3V and 15V, allowing it to interface seamlessly with a variety of logic systems.

This circuit is particularly valuable for voltage level translation, ensuring compatibility between high-voltage input signals and low-voltage logic circuits. It also provides high current drive at the output, enabling it to handle connected loads effectively. The CD4050 is widely used in digital electronics for signal buffering, level shifting, and protecting low-voltage components from high-voltage signals.

CD4050 Test Circuit

CD4050 Functional Block Diagram

CD4050 Replacements and Alternatives

Part Number	Description	Manufacturer
CD4050BD	Buffer, 4000/14000/40000 Series, 6-Function, 1-Input, CMOS, CDIP16	Harris Semiconductor
CD4050BDRE4	4000/14000/40000 Series, HEX 1-INPUT NON-INVERT GATE, PDSO16, GREEN, PLASTIC, MS-012AC, SOIC-16	Texas Instruments
CD4050BDE4	6-ch, 3-V to 18-V buffers, 16-SOIC, -55 to 125	Texas Instruments
CD4050BDTG4	4000/14000/40000 Series, HEX 1-INPUT NON-INVERT GATE, PDSO16, GREEN, PLASTIC, MS-012AC, SOIC-16	Texas Instruments

Application of the CD4050

Capabilities in Signal Level Adaptation

The CD4050 excels in transforming CMOS signals to DTL/TTL-level signals, playing a remarkable role in connecting devices that operate on varying voltage baselines. It establishes compatibility among digital circuits with distinct logic levels, smoothing their communication channels. In these scenarios, aligning signal levels maintains system functionality and cohesiveness, as seen in advanced manufacturing environments where machinery exhibits diverse logic level prerequisites.

Versatile Current Management Features

Among the notable attributes of the CD4050 is its function as a current sink or source within CMOS circuits. This feature supports cases demanding meticulous current regulation, such as controlling LEDs or optimizing power flow on a circuit board. Recognizing the significance of current management is a reoccurring theme among electronics aficionados, as it aids in refining power usage efficiency and improving overall device performance.

High-to-Low Logic Level Transition

The CD4050's proficiency in managing the logic level transition from high to low provides assistance in linking circuits with varying voltage parameters. As the integration of IoT devices flourishes, this ability is for crafting systems with adaptive attributes, ensuring that high-voltage and low-voltage logic circuits communicate effectively. Efficient level transitions mitigate the risk of component miscommunication, a factor closely monitored during integration and testing phases in electronics design.

Manufacturer Overview

Situated in the heart of Dallas, Texas, Texas Instruments (TI) has earned its place as a player in the worldwide semiconductor market, distinguished for its impactful contributions to the creation and manufacture of integrated circuits. Within the industry, it holds a reputation as one of the top ten entities in semiconductor sales, mainly focusing on analog chips and embedded processors. These two components form the lifeblood of over 80% of the company's total revenue. TI has consistently pioneered new heights in advancements, illustrated by its development of digital light processing technology alongside educational tools including microcontrollers and multi-core processors. Their technological advancements are underpinned by a formidable portfolio boasting 45,000 patents as recorded in 2016.

Datasheet PDF

CD4050 Datasheets

CD4050 Details PDF
CD4050 Details PDF for FR.pdf
CD4050 Details PDF for KR.pdf
CD4050 Details PDF for DE.pdf
CD4050 Details PDF for IT.pdf
CD4050 Details PDF for ES.pdf

Frequently Asked Questions [FAQ]

1. What is the Purpose of the CD4050 Electronic Component?

The CD4050 is a non-inverting hex buffer designed for logic-level conversion, operating with a single power supply voltage (VCC). It allows the input high-level voltage (VIH) to exceed the power supply voltage (VCC). Primarily, it is used as a converter from CMOS to DTL/TTL logic levels and can directly drive up to two DTL/TTL loads.

2. Why are the Input and Output of the CD4050 the Same? What is its Purpose?

The CD4050 is used for impedance conversion. It transforms signals with high output impedance and weak drive capability into signals with low output impedance and strong drive capability, improving signal strength.

3. What Chips Can Replace the CD4050?

Compatible alternatives include CC4050, TC4050, and MC14050.

4. How Can TTL Voltage Levels be Reduced?

To interface a 5V logic circuit with a 3.3V circuit, you can use a potential divider with resistors (e.g., 3.3kΩ and 2.2kΩ) or a series FET. Alternatively, ICs like SN74AHC125 or CD4050 can be used to achieve TTL voltage level reduction.