Texas Instruments CD74HC4050MT

Overview

CD74HC4050MT 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 operation, converts up to 15V input signals down to 0–5V logic levels, and delivers 6ns typical propagation delay at VCC = 5V with CL = 15pF - enabling robust interfacing between legacy high-voltage peripherals and modern low-voltage microcontrollers.

For engineers reviewing the CD74HC4050MT datasheet, CD74HC4050MT pinout, CD74HC4050MT application, or CD74HC4050MT equivalent, key selection criteria include its high-to-low voltage level translation capability (VI up to 15V), wide –55°C to 125°C operating temperature range, SOIC-16 package compatibility, and guaranteed ±25mA output drive per channel under industrial conditions.

Technical Context

The CD74HC4050MT implements six independent non-inverting buffer channels using silicon-gate CMOS technology with a modified input protection structure. This architecture enables safe clamping of inputs up to 15V while operating from a low-voltage VCC (2–6V), eliminating external level-shifting components in mixed-supply designs.

Each buffer provides balanced propagation delay (tPLH/tPHL ≤ 22ns max at VCC = 6V, CL = 50pF) and transition times (tTLH/tTHL ≤ 19ns max), with input leakage current ≤ ±1µA over full temperature range and noise immunity of 30% of VCC at 5V supply - ensuring reliable operation in electrically noisy industrial environments.

Key Specifications

Pinout & Package

CD74HC4050MT is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27mm pitch, 10.3mm body width, and JEDEC MS-012AC compliant footprint - compatible with automated SMT assembly and reflow profiles up to 260°C peak.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar non-inverting level translation and buffering applications.

Compared with SN74LVC1G17DBVR and CD74HC4050M96, the CD74HC4050MT offers unique 15V-tolerant inputs across six channels in a legacy SOIC tube format - making it viable for repair, legacy replacement, or low-volume prototyping where tape-and-reel logistics are impractical.

Availability

CD74HC4050MT is available at Aetrix Electronics and suitable for industrial sensor interfaces, legacy system integration, motor control feedback circuits, and automotive body electronics requiring stable component supply across extended temperature ranges.

Supply support for CD74HC4050MT 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 over 90 years of innovation in high-reliability IC design and manufacturing.

The CD74HC4050MT belongs to TI's HC-series high-speed CMOS logic family, engineered for robust level translation and signal integrity in mixed-voltage industrial and automotive systems where reliability across extreme temperatures is critical.

FAQ

What is the maximum input voltage rating for CD74HC4050MT?

The CD74HC4050MT supports DC input voltages up to 15V, independent of VCC supply level - enabling direct connection to 12V industrial sensors or legacy control signals while operating from a 3.3V or 5V rail. This is achieved via an internal modified input protection structure that safely clamps excess voltage without damage or latch-up.

Can CD74HC4050MT operate at 3.3V supply voltage?

Yes, CD74HC4050MT operates across a VCC range of 2V to 6V, including 3.3V nominal supply. At 3.3V, it maintains full functionality: VIH ≥ 2.0V, VIL ≤ 1.0V, VOH ≥ 3.15V, VOL ≤ 0.1V, and propagation delay remains within specification (≤26ns max at CL = 50pF). Its 30% noise margin at 3.3V further ensures robustness in noisy environments.

Is CD74HC4050MT pin-compatible with CD74HC4049M?

No - CD74HC4050MT and CD74HC4049M are not pin-compatible. While both are 16-pin SOIC devices with identical pin counts and package outlines, the CD74HC4049M contains six inverting buffers (A→¬Y), whereas CD74HC4050MT contains six non-inverting buffers (A→Y). Their pinouts differ: pin 1 is 1A on both, but output pin assignments (e.g., 1Y position) follow distinct functional layouts per device type.

Does CD74HC4050MT require external pull-up or pull-down resistors?

No, CD74HC4050MT does not require external biasing resistors. Its CMOS inputs have high impedance (II ≤ ±1µA) and defined VIH/VIL thresholds across the full VCC range. Unused inputs should be tied to VCC or GND to prevent floating states - but no pull-up/pull-down network is needed for functional operation of connected channels.

What is the thermal performance of CD74HC4050MT in SOIC package?

The CD74HC4050MT in SOIC (D) package has a junction-to-ambient thermal resistance (θJA) of 73°C/W. Under typical conditions (25°C ambient, 5V supply, 10mA per output), power dissipation remains below 50mW - resulting in junction temperature rise of <4°C, well within the 150°C maximum rating. Derating is recommended above 85°C ambient per TI's thermal guidelines.