TLC25L4CDG4 Equivalent & Substitute Parts

Part Overview

The TLC25L4CDG4 is a CMOS linear amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit single-ended amplifier in a 14-SOIC surface mount package. This device is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production needs. The part operates across a wide supply voltage range of 1.4 V to 16 V with low input bias current and moderate gain bandwidth characteristics suitable for low-power analog signal conditioning applications.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TLC25L4CDG4	—
Manufacturer	Texas Instruments	—
Amplifier Type	CMOS	—
Number of Circuits	4	—
Output Type	Single-Ended	—
Slew Rate	0.04	V/µs
Gain Bandwidth Product	110	kHz
Current - Input Bias	0.6	pA
Voltage - Input Offset	1.1	mV
Current - Supply (x4 Channels)	2.7	mA
Voltage - Supply Span (Min)	1.4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature Range	0 to 70	°C
Mounting Type	Surface Mount	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC25L4CDG4 is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: CMOS
Number of Circuits: 4
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Parameters:

Voltage - Supply Span (Min): 1.4 V minimum
Voltage - Supply Span (Max): 16 V maximum
Operating Temperature Range: 0°C to 70°C (or extended range)

Substitute parts are grouped into two categories based on electrical performance characteristics:

Group 1 - Direct Functional Equivalents (Texas Instruments LinCMOS™ Series):

TLC25L4CD: Identical electrical specifications, different packaging (Tube vs. DG4)
Maintains original slew rate (0.04 V/µs) and gain bandwidth product (110 kHz)

Group 2 - Enhanced Performance Alternatives (STMicroelectronics TS274 Series):

TS274CDT, TS274ACDT, TS274AIDT, TS274IDT
Higher slew rate (5.5 V/µs) and gain bandwidth product (3.5 MHz)
Increased output current capability (45 mA per channel)
Extended or standard operating temperature ranges
All maintain 14-SOIC package compatibility and ROHS3 compliance

Parameter Comparison

Parameter	TLC25L4CDG4	TLC25L4CD	TS274CDT	TS274ACDT	TS274AIDT	TS274IDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	4	4	4	4	4	4
Slew Rate (V/µs)	0.04	0.04	5.5	5.5	5.5	5.5
Gain Bandwidth Product (kHz)	110	110	3500	3500	3500	3500
Current - Input Bias (pA)	0.6	0.6	1	1	1	1
Voltage - Input Offset (mV)	1.1	1.1	1.1	0.9	0.9	1.1
Current - Supply (mA)	2.7	2.7	1	1	1	1
Current - Output / Channel (mA)	—	—	45	45	45	45
Voltage - Supply Span (Min)	1.4 V	1.4 V	3 V	3 V	3 V	3 V
Voltage - Supply Span (Max)	16 V	16 V	16 V	16 V	16 V	16 V
Operating Temperature Range	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	-40 to 125°C	-40 to 125°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Product Status	Discontinued	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

The TLC25L4CD is the primary substitute for the TLC25L4CDG4. Both parts maintain identical electrical specifications including slew rate, gain bandwidth product, input bias current, and supply voltage range. The TLC25L4CD carries a "Last Time Buy" product status, indicating limited future availability. This part is suitable for applications requiring the original low-speed, low-power characteristics of the TLC25L4CDG4 series.

For Enhanced Performance Applications:

The STMicroelectronics TS274 series (TS274CDT, TS274ACDT, TS274AIDT, TS274IDT) provides significantly improved electrical performance with 50× higher slew rate (5.5 V/µs vs. 0.04 V/µs) and 32× higher gain bandwidth product (3.5 MHz vs. 110 kHz). These parts are suitable for applications requiring faster signal conditioning and higher bandwidth operation. All TS274 variants maintain 14-SOIC package compatibility and ROHS3 compliance.

Temperature Range Considerations:

TS274CDT and TS274ACDT: Standard industrial temperature range (0°C to 70°C)
TS274AIDT and TS274IDT: Extended temperature range (-40°C to 125°C)

Product Status and Availability:

All substitute parts carry "Active" product status with confirmed inventory availability, ensuring long-term supply chain reliability. The TLC25L4CD, while available, is designated "Last Time Buy," indicating this option has limited production horizon.

Frequently Asked Questions (FAQ)

Q: Can the TS274 series directly replace the TLC25L4CDG4 in existing designs?

A: The TS274 series is pin-compatible and package-compatible with the TLC25L4CDG4 in the 14-SOIC form factor. However, the significantly higher slew rate and gain bandwidth product may affect circuit behavior in applications sensitive to these parameters. Circuit validation is required for designs with tight bandwidth or settling time specifications.

Q: What is the key difference between TLC25L4CD and TS274 series parts?

A: The TLC25L4CD maintains identical electrical specifications to the TLC25L4CDG4, including low slew rate (0.04 V/µs) and moderate gain bandwidth product (110 kHz). The TS274 series offers enhanced performance with 50× higher slew rate and 32× higher bandwidth, making it suitable for faster signal processing applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (TLC25L4CD, TS274CDT, TS274ACDT, TS274AIDT, TS274IDT) are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the compliance profile of the original TLC25L4CDG4.

Q: What is the difference between TS274AIDT and TS274IDT?

A: Both parts are functionally identical with identical electrical specifications. The primary difference is packaging: TS274AIDT is supplied in Cut Tape (CT) & Digi-Reel® format, while TS274IDT is supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly requirements.

Q: Does the minimum supply voltage differ between TLC25L4CD and TS274 series?

A: Yes. The TLC25L4CD operates with a minimum supply voltage of 1.4 V, while all TS274 variants require a minimum of 3 V. Applications operating below 3 V must use the TLC25L4CD or TLC25L4CDG4.

Q: Which substitute part offers the widest operating temperature range?

A: Both TS274AIDT and TS274IDT offer the extended operating temperature range of -40°C to 125°C, compared to the standard 0°C to 70°C range of the TLC25L4CDG4 and TLC25L4CD.

Q: Is the TLC25L4CD still available for new designs?

A: The TLC25L4CD carries a "Last Time Buy" product status, indicating limited future availability. For new designs requiring long-term supply assurance, the active TS274 series variants are recommended.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message