TLC27L9IDR Equivalent & Substitute Parts

Part Overview

The TLC27L9IDR is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-SOIC surface-mount package. This LinCMOS™ series device operates across a 4V to 16V supply range with low input bias current (0.7 pA) and is designed for applications requiring low-power, precision analog signal processing. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when addressing supply chain constraints, inventory availability, or specific application requirements that align with alternative manufacturer offerings while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Manufacturer	Texas Instruments	—
Part Number	TLC27L9IDR	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	0.03	V/µs
Gain Bandwidth Product	110	kHz
Current - Input Bias	0.7	pA
Voltage - Input Offset	1.1	mV
Current - Supply	57	µA (x4 Channels)
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-40 to 85	°C
RoHS Status	ROHS3 Compliant	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution eligibility for the TLC27L9IDR is determined by the following critical parameters:

Mechanical Compatibility:

Package type: 14-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Pin count and footprint alignment

Electrical Compatibility:

Number of circuits: 4 independent amplifier channels
Supply voltage range: Minimum 4V, Maximum 16V (substitute must support this span or be contained within it)
Output current per channel: Minimum 30 mA
Input bias current: Maximum 0.7 pA (lower values acceptable)
Voltage input offset: Maximum 1.1 mV (lower values acceptable)

Regulatory & Compliance:

RoHS3 compliance required
REACH unaffected status
Active product status

All four substitute parts (TS27L4AIDT, TS27L4CDT, TS27L4IDT, TS27M4IDT) share the identical 14-SOIC package footprint and surface-mount configuration. Each substitute operates within or exceeds the supply voltage requirements and meets all compliance certifications. Differences in slew rate, gain bandwidth product, and supply current reflect performance variations that may be advantageous or neutral depending on application requirements.

Parameter Comparison

Parameter	TLC27L9IDR	TS27L4AIDT	TS27L4CDT	TS27L4IDT	TS27M4IDT	Unit
Manufacturer	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	—
Number of Circuits	4	4	4	4	4	—
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	—
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	—
Slew Rate	0.03	0.04	0.04	0.04	0.6	V/µs
Gain Bandwidth Product	110	100	100	100	1000	kHz
Current - Input Bias	0.7	1	1	1	1	pA
Voltage - Input Offset	1.1	0.9	1.1	1.1	1.1	mV
Current - Supply	57	10	10	10	150	µA (x4 Channels)
Current - Output / Channel	30	45	45	45	45	mA
Voltage - Supply Span (Min)	4	3	3	3	3	V
Voltage - Supply Span (Max)	16	16	16	16	16	V
Operating Temperature	-40 to 85	-40 to 125	0 to 70	-40 to 125	-40 to 125	°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—
Product Status	Active	Active	Active	Active	Active	—

Engineering Selection Recommendations

TS27L4AIDT (STMicroelectronics)

This substitute provides the widest operating temperature range (-40°C to 125°C) among the STMicroelectronics options, extending beyond the TLC27L9IDR specification. Supply current is significantly reduced to 10 µA per channel (versus 57 µA), offering power efficiency advantages. Output current capability increases to 45 mA per channel. Input offset voltage improves to 0.9 mV. All compliance certifications match the original part. Packaging is Tape & Reel (TR), identical to the main part.

TS27L4CDT (STMicroelectronics)

This variant operates within a narrower temperature range (0°C to 70°C), suitable for commercial-grade applications. Supply current matches TS27L4AIDT at 10 µA per channel. Packaging is Cut Tape (CT) rather than Tape & Reel. Inventory availability is highest among substitutes at 30,200 pieces. All compliance requirements are satisfied.

TS27L4IDT (STMicroelectronics)

This option combines the extended temperature range of TS27L4AIDT (-40°C to 125°C) with dual packaging options (Cut Tape & Digi-Reel®). Supply current remains at 10 µA per channel. Inventory is substantial at 23,400 pieces. This part bridges packaging flexibility with temperature performance.

TS27M4IDT (STMicroelectronics)

This substitute features enhanced performance specifications: slew rate of 0.6 V/µs (20× faster than TLC27L9IDR) and gain bandwidth product of 1 MHz (9× higher). Supply current increases to 150 µA per channel, reflecting higher performance capability. Operating temperature extends to -40°C to 125°C. This part is suitable for applications requiring faster signal processing. Inventory is 7,910 pieces.

All substitutes maintain RoHS3 compliance, REACH unaffected status, and Active product status. Selection depends on temperature requirements, power budget constraints, and performance specifications needed for the target application.

Frequently Asked Questions (FAQ)

Q: Can TS27L4CDT replace TLC27L9IDR in all applications?

A: TS27L4CDT is mechanically and electrically compatible within its specified operating temperature range (0°C to 70°C). If your application operates within this range, substitution is valid. Applications requiring operation below 0°C or above 70°C require TS27L4AIDT or TS27L4IDT instead.

Q: What is the primary difference between TS27L4AIDT and TS27L4IDT?

A: Both parts are electrically identical with -40°C to 125°C operating range and 10 µA supply current. The difference is packaging: TS27L4AIDT uses Tape & Reel (TR), while TS27L4IDT offers Cut Tape (CT) and Digi-Reel® options. Select based on your assembly process requirements.

Q: Why does TS27M4IDT have higher supply current?

A: TS27M4IDT delivers significantly higher performance: 0.6 V/µs slew rate and 1 MHz gain bandwidth product versus 0.03 V/µs and 110 kHz for TLC27L9IDR. The increased supply current (150 µA per channel) reflects the additional circuitry required for faster signal processing. Use this part only if your application requires these enhanced specifications.

Q: Are all substitutes pin-compatible with TLC27L9IDR?

A: Yes. All substitutes use the identical 14-SOIC (0.154", 3.90mm Width) package with surface-mount configuration. PCB footprints are directly compatible without modification.

Q: What is the minimum supply voltage for each substitute?

A: TLC27L9IDR requires minimum 4V. All STMicroelectronics substitutes (TS27L4AIDT, TS27L4CDT, TS27L4IDT, TS27M4IDT) operate at minimum 3V. If your circuit uses 3V to 4V supply, only the substitutes are suitable.

Q: Do all parts meet RoHS3 compliance?

A: Yes. TLC27L9IDR and all four substitutes are RoHS3 compliant with REACH unaffected status. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute offers the best power efficiency?

A: TS27L4AIDT, TS27L4CDT, and TS27L4IDT all consume 10 µA per channel (versus 57 µA for TLC27L9IDR), representing 82% reduction in supply current. TS27M4IDT consumes 150 µA per channel and is not suitable for power-constrained applications.

Q: Can I use TS27M4IDT as a direct replacement for general-purpose applications?

A: TS27M4IDT is electrically compatible but offers higher performance specifications. It is suitable as a replacement if your application can tolerate increased supply current (150 µA per channel). For general-purpose, low-power applications, TS27L4AIDT, TS27L4CDT, or TS27L4IDT are more appropriate.

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