Texas Instruments CD74HC4050PWRG4

Overview

CD74HC4050PWRG4 from Texas Instruments is a non-inverting hex buffer IC designed for high-to-low voltage level translation, supporting input voltages up to 15 V while operating from a 2–6 V supply. It delivers 6 ns typical propagation delay at 5 V/15 pF, operates across –55°C to +125°C, and provides 15 LSTTL fanout capability. It is used in industrial sensor interface circuits where legacy 12 V or 15 V logic signals must be safely converted to 3.3 V or 5 V microcontroller inputs.

For engineers reviewing the CD74HC4050PWRG4 datasheet, CD74HC4050PWRG4 pinout, CD74HC4050PWRG4 application, or CD74HC4050PWRG4 equivalent, key selection criteria include its 15 V tolerant inputs, rail-to-rail output swing, wide temperature range, TSSOP-16 package compatibility with high-density PCB layouts, and absence of inversion in signal path.

Technical Context

The CD74HC4050PWRG4 implements six independent non-inverting buffer stages using silicon-gate CMOS technology with modified input protection diodes that enable safe operation with input voltages exceeding V_CC - up to 15 V DC. Its input structure clamps negative ESD transients and tolerates overvoltage without latch-up under specified conditions.

Each buffer drives CMOS or TTL loads with balanced rise/fall times and low quiescent current (≤40 µA at 6 V). The device supports mixed-voltage system interfacing without external resistors or level-shifting components, and maintains logic state integrity during power sequencing due to input protection independent of V_CC.

Key Specifications

Pinout & Package

TSSOP-16 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, exposed pad optional, RoHS-compliant NiPdAu lead finish, MSL Level-1 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1T45DBVR and CD74HC4050M96, the CD74HC4050PWRG4 uniquely combines 15 V input tolerance, unidirectional non-inverting buffering, TSSOP-16 compactness, and full –55°C to +125°C qualification - making it optimal for ruggedized unidirectional level translation in space- and reliability-critical designs.

Availability

CD74HC4050PWRG4 is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control, legacy system integration, and programmable logic interface applications requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for CD74HC4050PWRG4 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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The CD74HC4050PWRG4 belongs to TI's HC-series high-speed CMOS logic family, engineered for robust mixed-voltage interfacing in harsh-environment systems where reliability, wide temperature operation, and input overvoltage tolerance are critical.

FAQ

What is the maximum input voltage the CD74HC4050PWRG4 can tolerate?

The CD74HC4050PWRG4 supports a DC input voltage range of –0.5 V to 15 V, independent of V_CC. This allows direct connection to 12 V industrial sensors or legacy logic without external protection. Exceeding 15 V risks permanent damage, as absolute maximum rating is 16 V per the datasheet.

Can the CD74HC4050PWRG4 operate with a 3.3 V supply while accepting 12 V inputs?

Yes - the CD74HC4050PWRG4 is explicitly designed for this use case. With V_CC = 3.3 V, it accepts inputs up to 15 V and outputs clean 0 V to 3.3 V logic levels. Its modified input protection structure prevents latch-up and ensures safe operation across the full temperature range.

Is the CD74HC4050PWRG4 pin-compatible with other members of the 'HC4050 family?

Yes - the CD74HC4050PWRG4 shares identical pinout and functionality with all CD74HC4050 variants (e.g., CD74HC4050E, CD74HC4050M96, CD74HC4050NSR). All use the same 16-pin arrangement: six input/output pairs, V_CC, GND, and two NC pins. Package differences affect mounting but not electrical interface.

Does the CD74HC4050PWRG4 require external pull-up or pull-down resistors on its inputs?

No - the CD74HC4050PWRG4 has no internal pull resistors, but its CMOS inputs exhibit negligible leakage (≤1 µA at 15 V), so external biasing is only needed if the source is truly floating. In most applications with driven 12 V or 5 V signals, no external resistors are required for proper logic interpretation.

What is the thermal performance of the CD74HC4050PWRG4 in its TSSOP package?

The CD74HC4050PWRG4 in TSSOP-16 (PW) has a package thermal impedance θ_JA of 108°C/W. At 25°C ambient and 6 V supply driving 10 mA per output, power dissipation remains below 30 mW, resulting in junction temperature rise <3.3°C - well within the 150°C maximum rating.