TLC27M4IDRG4 Equivalent & Substitute Parts

Part Overview

The TLC27M4IDRG4 is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, featuring four independent amplifier circuits in a 14-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. The part operates across a supply voltage range of 4V to 16V and is suitable for applications requiring low input bias current and moderate bandwidth performance.

Key Parameters

Parameter	Value	Unit
Manufacturer	Texas Instruments	—
Part Number	TLC27M4IDRG4	—
Category	Linear, Amplifiers	—
Number of Circuits	4	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	0.62	V/µs
Gain Bandwidth Product	525	kHz
Current - Input Bias	0.7	pA
Voltage - Input Offset	1.1	mV
Current - Supply (x4 Channels)	570	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-40°C ~ 85°C	—
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC27M4IDRG4 is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 14-SOIC surface mount package with 0.154" (3.90mm) width to ensure mechanical and electrical compatibility with existing PCB layouts.

Circuit Configuration: All substitutes must provide four independent amplifier circuits to maintain functional equivalence.

Supply Voltage Range: Substitute parts must support the minimum 4V to maximum 16V supply voltage span to operate within the same power distribution architecture.

Mounting Type: Surface mount technology is required for all substitutes.

Electrical Performance Bands: Substitutes are grouped into two performance categories based on slew rate and gain bandwidth product:

Category A (Lower Performance): Slew rate 0.04V/µs, Gain bandwidth product 100 kHz
Category B (Higher Performance): Slew rate 0.6V/µs, Gain bandwidth product 1 MHz

Temperature Operating Range: Substitutes are available in two temperature grades: industrial (-40°C ~ 85°C or -40°C ~ 125°C) and commercial (0°C ~ 70°C).

Product Status: Active substitutes are preferred over obsolete components for new procurement.

Parameter Comparison

Parameter	TLC27M4IDRG4	TLC27M4IDR	TS27L4AIDT	TS27L4CDT	TS27L4IDT	TS27M4CDT	TS27M4IDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Number of Circuits	4	4	4	4	4	4	4
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate (V/µs)	0.62	0.62	0.04	0.04	0.04	0.6	0.6
Gain Bandwidth Product (kHz)	525	525	100	100	100	1000	1000
Current - Input Bias (pA)	0.7	0.7	1	1	1	1	1
Voltage - Input Offset (mV)	1.1	1.1	0.9	1.1	1.1	1.1	1.1
Current - Supply (µA, x4 Channels)	570	570	10	10	10	150	150
Current - Output / Channel (mA)	30	30	45	45	45	45	45
Voltage - Supply Span (Min, V)	4	4	3	3	3	3	3
Voltage - Supply Span (Max, V)	16	16	16	16	16	16	16
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility):

TLC27M4IDR is the primary substitute for TLC27M4IDRG4. Both parts are manufactured by Texas Instruments, share identical electrical specifications (0.62V/µs slew rate, 525 kHz gain bandwidth product, 570µA supply current), and operate across the same -40°C to 85°C temperature range. The only difference is packaging format: TLC27M4IDR is supplied in Tape & Reel (TR) format, while TLC27M4IDRG4 uses standard packaging. This part maintains active product status, ensuring long-term availability and supply chain continuity.

Performance-Matched Alternatives (STMicroelectronics):

TS27M4CDT and TS27M4IDT provide electrical performance matching the original TLC27M4IDRG4, with identical 0.6V/µs slew rate and 1 MHz gain bandwidth product. Both are manufactured by STMicroelectronics and maintain the 14-SOIC package format. TS27M4IDT supports the extended industrial temperature range (-40°C ~ 125°C), while TS27M4CDT operates within the commercial temperature range (0°C ~ 70°C). Supply current is 150µA per channel, higher than the original but within acceptable operational parameters for most applications.

Low-Power Alternatives (STMicroelectronics):

TS27L4AIDT, TS27L4CDT, and TS27L4IDT offer significantly reduced supply current (10µA per channel) at the cost of lower performance metrics. These parts feature 0.04V/µs slew rate and 100 kHz gain bandwidth product. TS27L4IDT supports the extended industrial temperature range (-40°C ~ 125°C), while TS27L4CDT operates within the commercial range (0°C ~ 70°C). TS27L4AIDT provides the extended industrial temperature range with active product status. These alternatives are suitable for power-constrained applications where bandwidth requirements are modest.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with modern manufacturing and storage requirements. All parts carry EAR99 export classification and are REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can TLC27M4IDR be used as a direct replacement for TLC27M4IDRG4 in existing designs?

A: Yes. TLC27M4IDR is electrically and functionally identical to TLC27M4IDRG4. Both parts share the same slew rate (0.62V/µs), gain bandwidth product (525 kHz), supply voltage range (4V–16V), operating temperature (-40°C ~ 85°C), and 14-SOIC package format. The primary difference is packaging format (Tape & Reel versus standard packaging), which does not affect circuit performance. PCB layout and schematic connections remain unchanged.

Q: What are the key differences between the TS27L4 and TS27M4 series substitutes?

A: The TS27L4 series (TS27L4AIDT, TS27L4CDT, TS27L4IDT) operates at lower performance levels with 0.04V/µs slew rate and 100 kHz gain bandwidth product, consuming only 10µA supply current per channel. The TS27M4 series (TS27M4CDT, TS27M4IDT) provides higher performance with 0.6V/µs slew rate and 1 MHz gain bandwidth product, consuming 150µA supply current per channel. Selection depends on application bandwidth requirements and power budget constraints.

Q: Are there temperature range limitations when substituting with STMicroelectronics parts?

A: Yes. TS27L4CDT and TS27M4CDT operate within the commercial temperature range (0°C ~ 70°C), which is narrower than the original TLC27M4IDRG4 industrial range (-40°C ~ 85°C). For applications requiring full industrial temperature operation, use TS27L4IDT or TS27M4IDT, both rated for -40°C ~ 125°C. Verify application temperature requirements before part selection.

Q: Do all substitute parts use the same 14-SOIC package?

A: Yes. All substitute parts listed use the 14-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical compatibility with existing PCB layouts. Pin assignments and package footprints are identical across all substitutes, allowing direct PCB replacement without layout modifications.

Q: What is the significance of product status (Active vs. Obsolete)?

A: Active product status indicates ongoing manufacturing and long-term availability from the manufacturer. Obsolete status indicates the part is no longer manufactured and existing inventory is limited. For new designs or long-term production requirements, active substitutes (TLC27M4IDR, TS27L4AIDT, TS27L4CDT, TS27L4IDT, TS27M4CDT, TS27M4IDT) are preferred to ensure supply chain continuity and avoid future obsolescence issues.

Q: How do supply current differences affect circuit design?

A: The original TLC27M4IDRG4 consumes 570µA total supply current (142.5µA per channel). TS27L4 series substitutes consume only 10µA per channel (40µA total), while TS27M4 series consume 150µA per channel (600µA total). Lower supply current reduces power dissipation and heat generation, beneficial for battery-powered or thermally constrained applications. Higher supply current may require larger power supply capacity but does not affect circuit functionality if adequate power is available.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating. This ensures compatibility with modern manufacturing processes and storage requirements without additional handling precautions.

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