TLC252ACD CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The TLC252ACD is a CMOS amplifier integrated circuit manufactured by Texas Instruments, configured as a dual-channel operational amplifier in an 8-SOIC surface mount package. This device operates within a supply voltage range of 1.4V to 16V and is specified for industrial temperature applications (0°C to 70°C). The product carries a Last Time Buy status, indicating that Texas Instruments has discontinued active production. This status necessitates identification of equivalent and substitute components to ensure design continuity and long-term supply chain reliability for applications currently utilizing the TLC252ACD.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	2.9	V/µs
Gain Bandwidth Product	2.2	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	900	µV
Current - Supply (per 2 Channels)	1.9	mA
Voltage - Supply Span (Min)	1.4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC252ACD is determined by strict alignment of electrical and mechanical parameters. The following criteria establish valid substitute relationships:

Primary Substitution Criteria:

Amplifier Type: CMOS
Number of Circuits: 2
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage - Supply Span (Min): ≤ 1.4V
Voltage - Supply Span (Max): ≥ 16V
Current - Input Bias: ≤ 1 pA
Voltage - Input Offset: ≤ 900 µV (nominal specification)

Secondary Compatibility Parameters:

Slew Rate: ≥ 2.9 V/µs (for signal fidelity preservation)
Gain Bandwidth Product: ≥ 2.2 MHz (for frequency response compatibility)
Current - Supply: ≤ 1.9 mA per 2 channels (for power budget compatibility)

Substitute parts are grouped into two categories based on product status and operational temperature range:

Category A - Active Production Substitutes (Preferred): Parts with Active product status and extended temperature ranges (-40°C to 125°C) provide superior long-term availability and operational flexibility.

Category B - Last Time Buy Substitutes (Secondary): Parts with Last Time Buy or Obsolete status offer electrical compatibility but present future supply constraints.

Parameter Comparison

Parameter	TLC252ACD	TS272ACDT	TS272AIDT	TS272BIDT	TS272CDT	TS272IDT	TS27L2ACDT	TS27L2AIDT	TLV9152IDR	LPC662IM/NOPB	LM432MA/NOPB
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	General Purpose	CMOS	General Purpose
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	2.9	5.5	5.5	5.5	5.5	5.5	0.04	0.04	20	0.11	—
Gain Bandwidth Product (MHz)	2.2	3.5	3.5	3.5	3.5	3.5	0.1	0.1	4.5	0.35	1
Current - Input Bias (pA)	1	1	1	1	1	1	1	1	10	0.002	3000
Voltage - Input Offset (µV)	900	900	900	250	1100	1100	900	1100	125	1000	600
Current - Supply per 2 Channels (mA)	1.9	1	1	1	1	1	0.01	0.01	0.56	0.086	0.15
Voltage - Supply Span Min (V)	1.4	3	3	3	3	3	3	3	2.7	4.75	2.5
Voltage - Supply Span Max (V)	16	16	16	16	16	16	16	16	16	15.5	16
Operating Temperature (°C)	0 to 70	0 to 70	-40 to 125	-40 to 125	0 to 70	-40 to 125	0 to 70	-40 to 125	-40 to 125	-40 to 85	-40 to 85
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active	Active	Active	Last Time Buy	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1 - Recommended Substitutes (Active Production, Full Compatibility):

The TS272 series from STMicroelectronics represents the primary substitution path for TLC252ACD applications. Parts TS272AIDT, TS272BIDT, and TS272IDT maintain CMOS amplifier architecture with dual-channel configuration in 8-SOIC packaging. These devices demonstrate electrical parameter alignment within acceptable tolerances:

Slew Rate: 5.5 V/µs (exceeds TLC252ACD minimum of 2.9 V/µs)
Gain Bandwidth Product: 3.5 MHz (exceeds TLC252ACD minimum of 2.2 MHz)
Input Bias Current: 1 pA (matches TLC252ACD specification)
Supply voltage range: 3V to 16V (accommodates TLC252ACD operating envelope above 3V minimum)
Current consumption: 1 mA per 2 channels (reduces from TLC252ACD 1.9 mA)

TS272AIDT and TS272IDT extend operating temperature to -40°C to 125°C, providing superior environmental coverage. TS272BIDT offers improved input offset voltage (250 µV versus 900 µV nominal), enhancing precision in low-signal applications.

Tier 2 - Secondary Substitutes (Active Production, Parameter Deviations):

TS27L2ACDT and TS27L2AIDT provide ultra-low power operation (10 µA per 2 channels) suitable for battery-powered applications. However, reduced slew rate (0.04 V/µs) and gain bandwidth product (100 kHz) restrict use to low-frequency signal conditioning applications.

TLV9152IDR from Texas Instruments offers rail-to-rail output capability and extended temperature range (-40°C to 125°C). General Purpose amplifier classification and higher input bias current (10 pA) represent deviations from CMOS specification, requiring application-level verification.

Tier 3 - Limited Substitutes (Last Time Buy or Obsolete Status):

LPC662IM/NOPB maintains CMOS architecture with push-pull rail-to-rail output but exhibits significantly reduced slew rate (0.11 V/µs) and gain bandwidth product (350 kHz). Last Time Buy status limits long-term availability.

LM432MA/NOPB carries Obsolete product status and exhibits substantially higher input bias current (3 nA), disqualifying it from precision applications requiring sub-picoampere bias characteristics.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q1: Can TS272ACDT directly replace TLC252ACD in existing PCB designs?

TS272ACDT maintains identical 8-SOIC package geometry and pinout compatibility. Electrical parameters align within acceptable tolerances for most applications. However, minimum supply voltage requirement increases from 1.4V to 3V. Applications operating below 3V supply voltage require design modification or alternative selection.

Q2: What is the primary difference between TS272ACDT and TS272AIDT?

Both devices share identical electrical specifications and 8-SOIC packaging. The distinction lies in operating temperature range: TS272ACDT operates 0°C to 70°C (matching TLC252ACD), while TS272AIDT extends to -40°C to 125°C. Selection depends on application environmental requirements.

Q3: Why does TLV9152IDR show higher input bias current (10 pA) compared to TLC252ACD (1 pA)?

TLV9152IDR is classified as a General Purpose amplifier rather than CMOS architecture. This classification permits higher input bias current while maintaining rail-to-rail output capability and extended temperature range. Applications sensitive to input bias current effects require verification before substitution.

Q4: Is TS27L2ACDT suitable for high-frequency signal processing applications?

TS27L2ACDT exhibits gain bandwidth product of 100 kHz and slew rate of 0.04 V/µs, restricting operation to low-frequency applications below approximately 10 kHz. High-frequency applications (above 100 kHz) require TS272 series or TLV9152IDR substitutes.

Q5: What supply voltage range must be verified when substituting TLC252ACD?

TLC252ACD operates from 1.4V minimum. Most recommended substitutes (TS272 series, TS27L2 series) require minimum 3V supply. Applications utilizing 1.4V to 3V supply range require TLV9152IDR (2.7V minimum) or LM432MA/NOPB (2.5V minimum) with application-level verification.

Q6: Are all substitute parts available in identical packaging options?

All recommended substitutes utilize 8-SOIC (0.154", 3.90mm Width) surface mount packaging. Packaging variants (Cut Tape, Tape & Reel, Tube) differ by supplier and distribution channel but do not affect electrical or mechanical compatibility.

Q7: How does the Last Time Buy status of TLC252ACD affect component selection strategy?

Last Time Buy status indicates Texas Instruments has ceased active production. Existing inventory remains available but will eventually deplete. Designs currently utilizing TLC252ACD should transition to Active production substitutes (TS272 series) to ensure long-term supply chain continuity and avoid future obsolescence constraints.

Q8: Can LPC662IM/NOPB replace TLC252ACD in precision instrumentation applications?

LPC662IM/NOPB maintains CMOS architecture and dual-channel configuration but exhibits significantly reduced slew rate (0.11 V/µs versus 2.9 V/µs) and gain bandwidth product (350 kHz versus 2.2 MHz). These reductions restrict application to low-frequency, low-speed signal conditioning. Precision instrumentation requiring TLC252ACD performance characteristics should not utilize LPC662IM/NOPB.

Q9: What compliance certifications apply to all substitute parts?

All substitute parts listed maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating. REACH status is Unaffected for all devices. ECCN classification is EAR99 for all parts, indicating standard commercial electronics classification.

Q10: Should TS272BIDT be preferred over TS272ACDT for new designs?

TS272BIDT offers improved input offset voltage specification (250 µV versus 900 µV), providing enhanced precision in low-signal applications. Extended temperature range (-40°C to 125°C) versus TS272ACDT (0°C to 70°C) supports broader environmental deployment. For new designs without legacy temperature constraints, TS272BIDT or TS272IDT represent optimal selections.

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