TLC4502MD Equivalent & Substitute Parts

Part Overview

The TLC4502MD is a CMOS amplifier integrated circuit manufactured by Texas Instruments, containing two independent circuits in an 8-SOIC surface mount package. This device is classified as obsolete, indicating discontinued production and limited availability for new designs. The TLC4502MD operates as a rail-to-rail output amplifier with CMOS architecture, designed for low-power applications requiring dual-channel amplification.

Due to its obsolete status, identifying equivalent substitute parts is necessary for ongoing production support, design continuity, and component procurement. Substitute parts must maintain functional compatibility through matching package type, pin configuration, and electrical performance within acceptable operating parameters.

Key Parameters

Parameter	TLC4502MD
Manufacturer	Texas Instruments
Category	Linear, Amplifiers
Amplifier Type	CMOS
Number of Circuits	2
Output Type	Rail-to-Rail
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Slew Rate	2.5 V/µs
Gain Bandwidth Product	4.7 MHz
Current - Input Bias	1 pA
Voltage - Input Offset	10 µV
Current - Supply	2.5 mA (x2 Channels)
Current - Output / Channel	50 mA
Voltage - Supply Span (Min)	4 V
Voltage - Supply Span (Max)	6 V
Operating Temperature	-55°C ~ 125°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the TLC4502MD are selected based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution validity:

Critical Matching Parameters:

Package type: 8-SOIC form factor with identical pin pitch (0.154", 3.90mm width)
Number of circuits: Dual-channel configuration (2 independent amplifiers)
Output type: Rail-to-rail output capability
Mounting type: Surface mount technology
Pin configuration: Identical pinout for direct replacement

Functional Compatibility Parameters:

Supply voltage range overlap: Substitute must operate within or encompass the TLC4502MD supply range (4V to 6V minimum)
Output current capability: Substitute must deliver minimum 50 mA per channel
Electrical characteristics: Input bias current, input offset voltage, and slew rate determine signal fidelity in the application circuit

The MAX492 series (Analog Devices Inc./Maxim Integrated) satisfies all critical matching parameters. All four substitute variants—MAX492CSA+, MAX492CSA+T, MAX492ESA+, and MAX492ESA+T—share identical electrical specifications and package configuration, differing only in packaging format (tube, cut tape, or tape & reel) and temperature rating.

Parameter Comparison

Parameter	TLC4502MD	MAX492CSA+	MAX492CSA+T	MAX492ESA+	MAX492ESA+T
Manufacturer	Texas Instruments	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Amplifier Type	CMOS	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate	2.5 V/µs	0.2 V/µs	0.2 V/µs	0.2 V/µs	0.2 V/µs
Gain Bandwidth Product	4.7 MHz	500 kHz	500 kHz	500 kHz	500 kHz
Current - Input Bias	1 pA	25 nA	25 nA	25 nA	25 nA
Voltage - Input Offset	10 µV	200 µV	200 µV	200 µV	200 µV
Current - Supply	2.5 mA (x2 Channels)	150 µA (x2 Channels)	150 µA (x2 Channels)	150 µA (x2 Channels)	150 µA (x2 Channels)
Current - Output / Channel	50 mA	30 mA	30 mA	30 mA	30 mA
Voltage - Supply Span (Min)	4 V	2.7 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	6 V	6 V	6 V	6 V	6 V
Operating Temperature	-55°C ~ 125°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All four MAX492 variants provide direct functional substitution for the TLC4502MD in 8-SOIC package applications. Selection among substitute options depends on procurement requirements and application constraints:

MAX492CSA+ (Tube Packaging): Suitable for lower-volume production runs and manual assembly processes. Commercial temperature rating (0°C ~ 70°C) limits use to standard industrial environments.

MAX492CSA+T (Cut Tape & Digi-Reel Packaging): Appropriate for semi-automated assembly with moderate production volumes. Identical electrical specifications to MAX492CSA+ with commercial temperature range.

MAX492ESA+ (Tube Packaging): Extended temperature rating (-40°C ~ 85°C) accommodates wider environmental operating conditions. Tube format supports manual and semi-automated placement.

MAX492ESA+T (Tape & Reel Packaging): Extended temperature rating (-40°C ~ 85°C) with automated assembly compatibility. Tape & reel format optimizes high-volume production workflows.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the original TLC4502MD. Product status for all MAX492 variants is active, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can MAX492 series parts directly replace TLC4502MD without circuit modification?

A: Direct pin-for-pin replacement is possible due to identical 8-SOIC package configuration and pinout. However, electrical performance differences require circuit evaluation. The MAX492 series exhibits lower slew rate (0.2 V/µs versus 2.5 V/µs) and reduced gain bandwidth product (500 kHz versus 4.7 MHz), which may affect high-frequency signal fidelity. Output current per channel is also reduced (30 mA versus 50 mA). Applications with stringent bandwidth or output current requirements must be reassessed.

Q: What is the difference between MAX492CSA+ and MAX492ESA+ variants?

A: Both variants share identical electrical specifications and 8-SOIC package configuration. The primary difference is operating temperature range: MAX492CSA+ operates from 0°C to 70°C (commercial), while MAX492ESA+ operates from -40°C to 85°C (extended). Selection depends on application environment. Extended temperature variants are required for automotive, aerospace, or industrial applications with temperature extremes.

Q: What packaging format should be selected for production?

A: Packaging selection depends on assembly methodology. Tube packaging (CSA+, ESA+) suits manual and semi-automated placement. Cut tape & Digi-Reel (CSA+T) supports semi-automated systems with moderate volumes. Tape & Reel (ESA+T) optimizes fully automated high-volume assembly lines. All formats contain identical components; packaging choice does not affect electrical performance.

Q: Are MAX492 parts compatible with the TLC4502MD supply voltage range?

A: The TLC4502MD operates from 4V to 6V. MAX492 series parts operate from 2.7V to 6V, encompassing the original range. Applications using the full 4V to 6V range are compatible. However, applications requiring operation below 4V are not suitable for TLC4502MD replacement with MAX492 parts.

Q: What compliance certifications apply to MAX492 substitutes?

A: All MAX492 variants are ROHS3 compliant and REACH unaffected, matching the regulatory status of TLC4502MD. These certifications ensure compatibility with current environmental and hazardous substance regulations for electronic components in regulated markets.

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