TL494CNSRG4 Equivalent & Substitute Parts

Part Overview

The TL494CNSRG4 is a Power Management IC (PMIC) functioning as a multi-topology DC-DC controller. It operates as a transistor driver supporting Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, and Push-Pull topologies with positive output configuration. The device generates two output phases for step-up, step-down, and step-up/step-down conversion applications.

The TL494CNSRG4 is discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

TL494CNSRG4

Texas InstrumentsIn Stock: 986TL494CNSRG4 Datasheet

Current PartRFQ

TL494CNSR

Texas InstrumentsIn Stock: 5283TL494CNSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL494CNSRG4 is determined by strict equivalence across the following critical parameters:

• Manufacturer & Base Product: Texas Instruments TL494 series
• Output Type & Function: Transistor driver with step-up, step-down, and step-up/step-down capability
• Topology Support: Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
• Electrical Specifications: Supply voltage 7V ~ 40V, switching frequency 1kHz ~ 300kHz, 45% maximum duty cycle
• Control Features: Dead time control and frequency control
• Package & Mounting: 16-SOIC surface mount package with identical physical dimensions
• Compliance: ROHS3 compliant, MSL 1 rating

The TL494CNSR meets all substitution criteria as a direct equivalent part from the same manufacturer and product line.

Parameter Comparison

Engineering Selection Recommendations

The TL494CNSR is the direct manufacturer-recommended substitute for the discontinued TL494CNSRG4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, control features, and package specifications.

The TL494CNSR maintains active product status, ensuring ongoing availability and supply chain continuity. Both parts carry ROHS3 compliance and MSL 1 ratings, meeting regulatory and environmental requirements for industrial and commercial applications.

Selection of the TL494CNSR as a replacement requires no design modifications, as all functional parameters, pin configurations, and electrical operating ranges are equivalent to the original TL494CNSRG4.

Frequently Asked Questions (FAQ)

Q: Can the TL494CNSR be used as a direct replacement for the TL494CNSRG4?

A: Yes. The TL494CNSR is the manufacturer-recommended substitute. Both parts are identical in electrical specifications, control features, topology support, and 16-SOIC package configuration. No circuit modifications are required.

Q: What is the difference between TL494CNSRG4 and TL494CNSR?

A: The primary difference is product status. The TL494CNSRG4 is discontinued, while the TL494CNSR remains in active production. The packaging designation differs (Digi-Reel for TL494CNSR versus standard packaging for TL494CNSRG4), but electrical and functional specifications are identical.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist. Both parts operate within the same supply voltage range (7V ~ 40V), switching frequency range (1kHz ~ 300kHz), and support identical topologies and control features. Pin-to-pin compatibility is maintained.

Q: What topologies does the TL494CNSR support?

A: The TL494CNSR supports Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, and Push-Pull converter topologies with positive output configuration.

Q: Is the TL494CNSR compliant with environmental and regulatory standards?

A: Yes. The TL494CNSR is ROHS3 compliant and carries an MSL 1 (Unlimited) moisture sensitivity rating, meeting environmental and reliability requirements for industrial applications.