TLV2404CD Equivalent & Substitute Parts

Part Overview

The TLV2404CD is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a quad (4-circuit) rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The TLV2404CD operates across a supply voltage range of 2.5 V to 16 V and is suitable for low-power analog signal processing applications requiring rail-to-rail output capability. Due to its Last Time Buy status, identification of functionally equivalent substitute parts is necessary for design continuity and long-term component availability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Slew Rate	0.0025	V/µs
Gain Bandwidth Product	5.5	kHz
Current - Input Bias	100	pA
Voltage - Input Offset	390	µV
Current - Supply	900	nA (x4 Channels)
Current - Output / Channel	200	µA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	0 to 70	°C
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLV2404CD is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Package type: 14-SOIC surface mount form factor
Circuit configuration: Quad (4-circuit) amplifier
Output architecture: Rail-to-rail capability
Supply voltage compatibility: Minimum 2.5 V, maximum 16 V overlap
Mounting type: Surface mount

Secondary Compatibility Factors:

Input bias current characteristics
Voltage input offset specifications
Supply current consumption per channel
Output current per channel capability
Operating temperature range overlap

Substitute parts are grouped into two functional categories based on amplifier technology:

Category 1: General Purpose Amplifiers (TLV Series) The TLV2404IDR represents the direct functional equivalent with identical electrical specifications but extended operating temperature range (-40°C to 125°C) and Active product status. Packaging differs only in format (Tape & Reel versus Tube).

Category 2: CMOS Amplifiers (AD8548, AD8659, LMC6464 Series) These parts share the 14-SOIC package, quad-circuit configuration, and rail-to-rail output. However, they exhibit significantly different electrical performance characteristics, including higher slew rates, increased gain bandwidth products, and lower input bias currents. These parts are suitable for applications where the TLV2404CD's performance envelope is exceeded by design requirements.

Parameter Comparison

Parameter	TLV2404CD	TLV2404IDR	AD8548ARZ	AD8659ARZ	LMC6464BIMX/NOPB
Amplifier Type	General Purpose	General Purpose	CMOS	CMOS	CMOS
Number of Circuits	4	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Slew Rate (V/µs)	0.0025	0.0025	0.08	0.08	0.028
Gain Bandwidth Product (kHz)	5.5	5.5	200	200	50
Current - Input Bias (pA)	100	100	5	5	0.15
Voltage - Input Offset (µV)	390	390	3000	350	250
Current - Supply (nA/µA per 4 Channels)	900 nA	900 nA	18 µA	18 µA	90 µA
Current - Output / Channel (µA/mA)	200 µA	200 µA	12 mA	12 mA	75 mA
Voltage - Supply Span Min (V)	2.5	2.5	2.7	2.7	3
Voltage - Supply Span Max (V)	16	16	18	18	15.5
Operating Temperature (°C)	0 to 70	-40 to 125	-40 to 125	-40 to 125	-40 to 85
Product Status	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Recommended for Pin-Compatible Designs):

The TLV2404IDR is the primary substitute for the TLV2404CD. Both parts share identical electrical specifications, including slew rate (0.0025 V/µs), gain bandwidth product (5.5 kHz), input bias current (100 pA), and input offset voltage (390 µV). The TLV2404IDR is manufactured by Texas Instruments with Active product status, ensuring long-term availability. The only functional difference is extended operating temperature range (-40°C to 125°C versus 0°C to 70°C) and packaging format (Tape & Reel versus Tube). This part is suitable for direct substitution in all applications where the TLV2404CD was originally specified.

Alternative Substitutes (Performance Enhancement):

The AD8659ARZ, AD8659ARZ-R7, and AD8659ARZ-RL represent functionally compatible alternatives with enhanced performance characteristics. These Analog Devices CMOS amplifiers maintain the 14-SOIC package and quad-circuit configuration. Key differences include higher slew rate (0.08 V/µs), increased gain bandwidth product (200 kHz), and lower input bias current (5 pA). These parts are suitable for applications requiring improved frequency response or reduced input bias current effects. All variants are Active products with ROHS3 compliance.

The AD8548ARZ, AD8548ARZ-R7, and AD8548ARZ-RL offer similar performance enhancement to the AD8659 series with identical electrical specifications. These parts are available in multiple packaging formats (Tube and Tape & Reel variants) and maintain Active product status.

Secondary Alternatives (Micropower CMOS):

The LMC6464BIMX/NOPB is an Active product offering ultra-low input bias current (0.15 pA) and reduced input offset voltage (250 µV). This part exhibits higher supply current consumption (90 µA for 4 channels) and maximum output current per channel (75 mA) compared to the TLV2404CD. The LMC6464BIM/NOPB variant is Obsolete and should not be selected for new designs.

Compliance and Regulatory Status:

All recommended substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited). All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001. No regulatory barriers exist for substitution within the provided part list.

Frequently Asked Questions (FAQ)

Q: Can the TLV2404IDR be used as a direct replacement for the TLV2404CD in existing designs?

A: Yes. The TLV2404IDR is electrically identical to the TLV2404CD across all specified parameters including slew rate, gain bandwidth product, input bias current, and supply voltage range. The only differences are extended operating temperature range and packaging format (Tape & Reel). No circuit modifications are required for substitution.

Q: What is the primary reason to consider the AD8659ARZ or AD8548ARZ series over the TLV2404IDR?

A: The AD8659ARZ and AD8548ARZ series provide significantly higher slew rate (0.08 V/µs versus 0.0025 V/µs) and gain bandwidth product (200 kHz versus 5.5 kHz). These characteristics are beneficial for applications requiring faster signal processing or higher frequency response. However, these parts consume more supply current and exhibit different input offset voltage specifications. Selection depends on application-specific performance requirements.

Q: Are all substitute parts available in the same 14-SOIC package?

A: Yes. All substitute parts listed are manufactured in the 14-SOIC (0.154", 3.90mm Width) surface mount package. Pin-to-pin compatibility is maintained across all recommended substitutes, enabling direct PCB placement without layout modifications.

Q: What is the difference between the various AD8659 packaging options (ARZ, ARZ-R7, ARZ-RL)?

A: The AD8659ARZ is supplied in Tube packaging. The AD8659ARZ-R7 is supplied in Cut Tape and Digi-Reel format. The AD8659ARZ-RL is supplied in Tape & Reel format. All three variants are electrically identical. Selection is based on procurement and assembly process requirements.

Q: Why is the LMC6464BIM/NOPB listed as Obsolete?

A: The LMC6464BIM/NOPB is classified as Obsolete and should not be selected for new designs. The LMC6464BIMX/NOPB is the Active equivalent and is the appropriate selection if CMOS micropower characteristics are required.

Q: What is the impact of supply voltage range differences between substitute parts?

A: The TLV2404CD operates from 2.5 V to 16 V. The AD8548 and AD8659 series operate from 2.7 V to 18 V, providing extended maximum supply voltage capability. The LMC6464BIMX/NOPB operates from 3 V to 15.5 V, with a higher minimum supply voltage. Designs operating below 3 V require the TLV2404IDR, AD8548, or AD8659 series.

Q: Are there temperature range considerations for substitution?

A: The TLV2404CD operates from 0°C to 70°C. The TLV2404IDR, AD8548, and AD8659 series extend to -40°C to 125°C, providing broader temperature coverage. The LMC6464BIMX/NOPB operates from -40°C to 85°C. Applications requiring operation below 0°C or above 70°C must use extended-range alternatives.

Q: What is the significance of input bias current differences between parts?

A: The TLV2404CD exhibits 100 pA input bias current. The AD8548 and AD8659 series reduce this to 5 pA, and the LMC6464BIMX/NOPB further reduces it to 0.15 pA. Lower input bias current reduces errors in high-impedance signal conditioning circuits. Selection depends on circuit impedance and accuracy requirements.

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