LT1014DN Equivalent & Substitute Parts

Part Overview

The LT1014DN is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in a 14-pin DIP package. This component is classified as a Last Time Buy product, indicating discontinued production status. The LT1014DN operates across a wide supply voltage range of 4V to 30V and is suitable for applications requiring low input bias current and moderate bandwidth characteristics. Due to its Last Time Buy status, identifying equivalent and 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	—
Slew Rate	0.4	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	12	nA
Voltage - Input Offset	60	µV
Current - Supply (per 4 Channels)	350	µA
Current - Output / Channel	25	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	0 to 70	°C
Mounting Type	Through Hole	—
Package / Case	14-DIP (0.300", 7.62mm)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the LT1014DN is determined by electrical and mechanical compatibility across the following critical parameters:

Primary Substitution Criteria:

Number of circuits (4 required)
Amplifier type (General Purpose)
Slew rate (0.4 V/µs nominal)
Gain bandwidth product (1 MHz nominal)
Input bias current (12 nA nominal)
Input offset voltage (60 µV nominal)
Supply current per 4 channels (350 µA nominal)
Output current per channel (25 mA nominal)
Supply voltage range (4V to 30V minimum)
Operating temperature range (0°C to 70°C minimum)
Package type (14-DIP through-hole)

Secondary Compatibility Factors:

Mounting type (through-hole vs. surface mount)
Packaging format (tube vs. cut tape)
Product status (active vs. last time buy)
RoHS and REACH compliance

Substitutes are grouped into two categories: direct pin-compatible replacements maintaining identical electrical specifications, and functional equivalents with minor parameter variations that remain within acceptable operating margins for general-purpose amplifier applications.

Parameter Comparison

Part Number	Manufacturer	Package Type	Mounting	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Status
LT1014DN	Texas Instruments	14-DIP	Through Hole	0.4	1	12	60	350	25	4	30	0 to 70	Last Time Buy
LT1014DDWR	Texas Instruments	16-SOIC	Surface Mount	0.4	1	12	60	350	25	4	30	0 to 70	Active
LT1014ACN#PBF	Analog Devices Inc.	14-DIP	Through Hole	0.4	1	12	60	350	20	4	44	0 to 70	Active
LT1014CN#PBF	Analog Devices Inc.	14-DIP	Through Hole	0.4	1	15	60	350	20	4	44	0 to 70	Active
LT1014DN#PBF	Analog Devices Inc.	14-DIP	Through Hole	0.4	1	15	60	350	20	4	44	0 to 70	Active
LT1014IN#PBF	Analog Devices Inc.	14-DIP	Through Hole	0.4	1	15	60	350	20	4	44	-40 to 85	Active
LT1179ACN#PBF	Analog Devices Inc.	14-DIP	Through Hole	0.04	0.085	3	80	16	—	5	30	0 to 70	Active
LT1179CN#PBF	Analog Devices Inc.	14-DIP	Through Hole	0.04	0.085	3	100	17	—	5	30	0 to 70	Active
LT1179IN#PBF	Analog Devices Inc.	14-DIP	Through Hole	0.04	0.085	3	100	17	—	5	30	-40 to 85	Active
OP400HPZ	Analog Devices Inc.	14-DIP	Through Hole	0.15	0.5	0.75	80	600	—	6	36	-40 to 85	Active

Engineering Selection Recommendations

Direct Pin-Compatible Replacements (14-DIP Through-Hole Package):

The LT1014ACN#PBF, LT1014CN#PBF, and LT1014DN#PBF from Analog Devices Inc. maintain identical electrical specifications to the LT1014DN across all critical parameters. These parts are manufactured to the same base product number (LT1014) and are available in active product status with ROHS3 compliance. The LT1014ACN#PBF and LT1014CN#PBF support an extended maximum supply voltage of 44V compared to the original 30V specification, providing additional design margin. The LT1014IN#PBF extends the operating temperature range to -40°C to 85°C, suitable for applications requiring industrial or military temperature specifications.

Surface-Mount Alternative:

The LT1014DDWR provides electrical equivalence in a 16-SOIC surface-mount package. This part maintains identical electrical performance to the LT1014DN but requires PCB redesign for surface-mount assembly. Selection of this part is appropriate for new designs or board revisions where surface-mount technology is preferred.

Low-Power Alternatives (LT1179 Series):

The LT1179ACN#PBF, LT1179CN#PBF, and LT1179IN#PBF represent functional alternatives with significantly reduced power consumption (16-17 µA vs. 350 µA supply current). These parts operate at lower slew rates (0.04 V/µs vs. 0.4 V/µs) and reduced gain-bandwidth product (85 kHz vs. 1 MHz). Selection of LT1179 variants is appropriate for battery-powered or power-constrained applications where the reduced bandwidth and slew rate are acceptable.

Differential Output Alternative:

The OP400HPZ provides a general-purpose amplifier with differential output configuration. This part exhibits different electrical characteristics including lower input bias current (0.75 pA), higher supply current (600 µA), and reduced gain-bandwidth product (500 kHz). The OP400HPZ is suitable for applications requiring differential signal processing but is not a direct functional replacement for single-ended applications.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original LT1014DN. Active product status ensures long-term availability and supply chain continuity. Selection should prioritize parts with active status to avoid future obsolescence.

Frequently Asked Questions (FAQ)

Q: Can the LT1014DDWR replace the LT1014DN in existing designs?

A: The LT1014DDWR provides electrical equivalence but requires PCB redesign. The original LT1014DN uses a 14-pin DIP through-hole package, while the LT1014DDWR uses a 16-pin SOIC surface-mount package. Pin assignments differ between packages, necessitating circuit board layout modifications. Direct socket substitution is not possible.

Q: What is the difference between LT1014ACN#PBF and LT1014CN#PBF?

A: Both parts are pin-compatible 14-DIP through-hole packages with identical electrical performance. The primary difference is input bias current specification: LT1014ACN#PBF specifies 12 nA, while LT1014CN#PBF specifies 15 nA. Both parts support the extended supply voltage range of 4V to 44V and are suitable for direct substitution in the LT1014DN socket.

Q: Is the LT1014IN#PBF suitable for military or aerospace applications?

A: The LT1014IN#PBF extends the operating temperature range to -40°C to 85°C, which accommodates industrial and extended-temperature applications. However, military and aerospace applications typically require additional qualifications such as MIL-PRF specifications, burn-in testing, and traceability documentation. Verify specific application requirements with the component supplier.

Q: Why would I select the LT1179 series over the LT1014 series?

A: The LT1179 series is selected for applications where power consumption is critical. Supply current is reduced from 350 µA to 16-17 µA, a 20-fold reduction. This selection is appropriate for battery-powered instruments, portable medical devices, or remote sensing applications. The trade-off is reduced slew rate (0.04 V/µs vs. 0.4 V/µs) and lower gain-bandwidth product (85 kHz vs. 1 MHz), which may limit high-frequency signal processing capability.

Q: Can the OP400HPZ replace the LT1014DN?

A: The OP400HPZ is not a direct replacement. While both are 4-circuit general-purpose amplifiers in 14-DIP packages, the OP400HPZ features differential output configuration and significantly different electrical characteristics. Input bias current is 0.75 pA (vs. 12 nA), supply current is 600 µA (vs. 350 µA), and gain-bandwidth product is 500 kHz (vs. 1 MHz). Selection of the OP400HPZ is appropriate only for applications specifically requiring differential output topology.

Q: What is the significance of the #PBF suffix in part numbers?

A: The #PBF suffix indicates lead-free (Pb-free) packaging, consistent with ROHS3 compliance requirements. All substitute parts listed include this designation, confirming compliance with European Union Restriction of Hazardous Substances regulations. This suffix does not affect electrical performance or pin compatibility.

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

A: No. The LT1014 series variants (LT1014ACN#PBF, LT1014CN#PBF, LT1014DN#PBF, LT1014IN#PBF) are available in tube packaging for through-hole mounting. The LT1014DDWR is available in cut tape and Digi-Reel format for surface-mount assembly. The LT1179 series and OP400HPZ are available in tube packaging. Verify packaging format availability with the component supplier based on assembly requirements.

Q: What is the maximum supply voltage for each substitute part?

A: The original LT1014DN supports 4V to 30V. The LT1014 series from Analog Devices (ACN, CN, DN, IN variants) extends this to 4V to 44V. The LT1179 series supports 5V to 30V. The OP400HPZ supports 6V to 36V. Design circuits to operate within the specified supply voltage range of the selected part.

Q: Can I use LT1014IN#PBF in a design specified for 0°C to 70°C operation?

A: Yes. The LT1014IN#PBF supports -40°C to 85°C operation, which encompasses the 0°C to 70°C specification. This part is backward-compatible with designs requiring the narrower temperature range and provides additional margin for environmental variations.

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