TLC27M7CDG4 Equivalent & Substitute Parts

Part Overview

The TLC27M7CDG4 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 is classified as a LinCMOS™ series component and is discontinued at DiGi Electronics, with 1035 units currently in stock as new original inventory.

The TLC27M7CDG4 has reached end-of-life status, necessitating identification of functionally equivalent substitute components for ongoing design support and production requirements. Substitute parts must maintain compatibility across electrical performance parameters, package form factor, and supply voltage specifications to ensure direct replacement capability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	0.62	V/µs
Gain Bandwidth Product	635	kHz
Current - Input Bias	0.7	pA
Voltage - Input Offset	190	µV
Current - Supply (x2 Channels)	285	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	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

Substitute parts for the TLC27M7CDG4 are evaluated based on the following critical parameters that determine functional equivalence:

Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB layout compatibility and automated assembly process alignment.

Supply Voltage Range: Substitute parts must support the minimum 3 V and maximum 16 V supply voltage span to maintain operation across the original design envelope.

Circuit Configuration: All substitutes must provide dual-channel (2 circuit) amplifier functionality to match the original part's channel count.

Amplifier Type: CMOS amplifier topology is required to maintain the low input bias current characteristic (sub-nanoampere range) essential for high-impedance signal conditioning applications.

Electrical Performance Boundaries: Substitute parts are grouped into two categories based on performance tier:

Tier 1 - Direct Electrical Match (TLC27M7CD): Maintains identical slew rate (0.62 V/µs), gain bandwidth product (635 kHz), input bias current (0.7 pA), and input offset voltage (190 µV). This part represents the closest functional equivalent with matching supply current specifications.

Tier 2 - Enhanced Performance Substitutes (TS272 series, TS27L2 series): These STMicroelectronics components provide superior electrical performance with higher slew rates (5.5 V/µs for TS272; 0.04 V/µs for TS27L2), increased gain bandwidth products, and higher output current capability (45 mA vs. 30 mA). These parts are suitable for applications where improved performance margins are beneficial.

Compliance and Availability: All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status, ensuring regulatory alignment with the original component.

Parameter Comparison

Parameter	TLC27M7CDG4	TLC27M7CD	TS272ACDT	TS272BIDT	TS272CDT	TS272IDT	TS27L2ACDT	TS27L2BIDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	0.62	0.62	5.5	5.5	5.5	5.5	0.04	0.04
Gain Bandwidth Product (kHz)	635	635	3500	3500	3500	3500	100	100
Current - Input Bias (pA)	0.7	0.7	1	1	1	1	1	1
Voltage - Input Offset (µV)	190	190	900	250	1100	1100	900	250
Current - Supply x2 Channels (µA)	285	285	1000	1000	1000	1000	10	10
Current - Output / Channel (mA)	30	30	45	45	45	45	45	45
Voltage - Supply Span Min (V)	3	3	3	3	3	3	3	3
Voltage - Supply Span Max (V)	16	16	16	16	16	16	16	16
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	-40 to 125	0 to 70	-40 to 125	0 to 70	-40 to 125
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Discontinued	Last Time Buy	Active	Active	Active	Active	Active	Active
Inventory (Pcs)	1035	1042	25400	1977	17007	21553	10400	10353

Engineering Selection Recommendations

Primary Substitute: TLC27M7CD

The TLC27M7CD is the recommended primary substitute for the TLC27M7CDG4. This part maintains identical electrical specifications across all critical parameters: slew rate (0.62 V/µs), gain bandwidth product (635 kHz), input bias current (0.7 pA), input offset voltage (190 µV), and supply current (285 µA). The TLC27M7CD is manufactured by Texas Instruments under the LinCMOS™ series designation, ensuring design continuity and performance predictability. With 1042 units in stock and Last Time Buy status, this part provides a direct replacement path with minimal design verification requirements. Both parts share identical package specifications (8-SOIC) and operating temperature range (0°C to 70°C).

Secondary Substitutes: TS272 Series (TS272ACDT, TS272BIDT, TS272CDT, TS272IDT)

The TS272 series from STMicroelectronics provides enhanced electrical performance suitable for applications requiring improved dynamic response. These parts deliver 5.5 V/µs slew rate (8.9× faster than the original) and 3.5 MHz gain bandwidth product (5.5× higher). Output current capability increases to 45 mA per channel. Supply current increases to 1 mA across both channels. All TS272 variants maintain the 3 V to 16 V supply voltage range and 8-SOIC package compatibility. Temperature range variants are available: TS272ACDT and TS272CDT operate 0°C to 70°C; TS272BIDT and TS272IDT extend to -40°C to 125°C. High inventory availability (1977 to 25400 units) ensures supply continuity.

Tertiary Substitutes: TS27L2 Series (TS27L2ACDT, TS27L2BIDT)

The TS27L2 series provides ultra-low power operation with 10 µA supply current (35× lower than the original), suitable for battery-powered and energy-constrained applications. Slew rate reduces to 0.04 V/µs and gain bandwidth product to 100 kHz, representing lower performance tier. Input offset voltage improves to 250 µV (TS27L2BIDT) or 900 µV (TS27L2ACDT). Output current remains at 45 mA per channel. Temperature range variants available: TS27L2ACDT operates 0°C to 70°C; TS27L2BIDT extends to -40°C to 125°C. Inventory levels support production requirements (3120 to 10400 units).

Compliance Verification

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status, ensuring regulatory alignment with original design requirements. ECCN classification remains EAR99 across all parts.

Frequently Asked Questions (FAQ)

Q: Can the TLC27M7CD directly replace the TLC27M7CDG4 without circuit modifications?

A: Yes. The TLC27M7CD provides identical electrical specifications and package configuration. No circuit modifications are required. Both parts operate within the same parameter envelope for slew rate, gain bandwidth product, input bias current, input offset voltage, and supply current. PCB layout remains unchanged.

Q: What are the key differences between the TS272 series and the original TLC27M7CDG4?

A: The TS272 series provides significantly enhanced performance: slew rate increases from 0.62 V/µs to 5.5 V/µs, and gain bandwidth product increases from 635 kHz to 3.5 MHz. Supply current increases from 285 µA to 1 mA. Output current capability increases from 30 mA to 45 mA per channel. Input offset voltage ranges from 250 µV to 1.1 mV depending on variant. These improvements benefit applications requiring faster signal conditioning and higher output drive capability.

Q: When should the TS27L2 series be selected instead of the TS272 series?

A: The TS27L2 series is selected for applications prioritizing power consumption reduction. With 10 µA supply current versus 1 mA for TS272, the TS27L2 series reduces power dissipation by 99%. This selection is appropriate for battery-powered systems, remote sensors, and energy-harvesting applications where dynamic performance requirements are modest. The trade-off involves reduced slew rate (0.04 V/µs) and lower gain bandwidth product (100 kHz).

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package, ensuring PCB compatibility. Packaging formats differ: TLC27M7CD is supplied in Tube; TS272 variants are supplied in Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR); TS27L2 variants are supplied in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel®. These packaging differences do not affect electrical performance or board-level compatibility.

Q: What is the temperature range consideration when selecting substitutes?

A: The original TLC27M7CDG4 operates 0°C to 70°C. Substitute parts offer two temperature ranges: standard (0°C to 70°C) and extended (-40°C to 125°C). Standard-range parts (TLC27M7CD, TS272ACDT, TS272CDT, TS27L2ACDT) are suitable for commercial and industrial applications. Extended-range parts (TS272BIDT, TS272IDT, TS27L2AIDT, TS27L2BIDT) support automotive, aerospace, and extreme-environment applications.

Q: How do input offset voltage specifications affect circuit design?

A: Input offset voltage determines DC error at the amplifier output. The original TLC27M7CDG4 specifies 190 µV. Substitutes range from 190 µV (TLC27M7CD) to 1.1 mV (TS272CDT, TS272IDT). For precision DC applications, lower offset voltage reduces output error. For AC-coupled or high-gain applications, offset voltage becomes less critical. Circuit design must account for the selected substitute's offset voltage specification in error budget calculations.

Q: What inventory considerations apply to long-term production planning?

A: The original TLC27M7CDG4 is discontinued with 1035 units remaining. The recommended primary substitute TLC27M7CD has Last Time Buy status with 1042 units available. For sustained production beyond current inventory, transition to active-status parts is necessary: TS272 series (1977 to 25400 units) or TS27L2 series (3120 to 10400 units) provide long-term supply assurance. Active-status parts support indefinite production without supply discontinuation risk.

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