LF353PG4 Equivalent & Substitute Parts

Part Overview

The LF353PG4 is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a dual-channel (2 circuit) device in an 8-DIP package. This part is classified as Obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The LF353PG4 operates across a wide supply voltage range (7V to 36V) and is suitable for applications requiring low input bias current and moderate bandwidth performance.

Key Parameters

Parameter	Value
Amplifier Type	J-FET
Number of Circuits	2
Slew Rate	13 V/µs
Gain Bandwidth Product	3 MHz
Current - Input Bias	50 pA
Voltage - Input Offset	5 mV
Current - Supply	3.6 mA (x2 Channels)
Current - Output / Channel	40 mA
Voltage - Supply Span (Min)	7 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	0°C to 70°C
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62 mm)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LF353PG4 is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type (J-FET input architecture)
Number of Circuits (dual-channel configuration)
Package Type (8-DIP through-hole)
Supply Voltage Range compatibility (minimum 7V, maximum 36V)
Input Bias Current (50 pA specification)
Slew Rate (13 V/µs minimum)
Gain Bandwidth Product (3 MHz minimum)

Substitute Categories:

Category 1: Direct Functional Equivalents (Active Status) LF353P and LF353N/NOPB are direct equivalents manufactured by Texas Instruments. Both maintain identical J-FET input architecture, dual-channel configuration, and 8-DIP packaging. These parts are in Active product status, ensuring long-term availability and supply continuity.

Category 2: Performance-Enhanced Alternatives MUSES8820D (Nisshinbo Micro Devices) and OP275GPZ (Analog Devices) provide enhanced performance characteristics while maintaining 8-DIP package compatibility and dual-channel configuration. These parts feature improved slew rates, higher gain bandwidth products, and extended operating temperature ranges. However, they employ different amplifier topologies (Audio-type rather than J-FET).

Category 3: Legacy Compatibility Option NJM4558D (Nisshinbo Micro Devices) provides functional compatibility with identical supply voltage range and package format. This part is classified as Not For New Designs but remains available for legacy system support.

Parameter Comparison

Parameter	LF353PG4	LF353P	LF353N/NOPB	MUSES8820D	NJM4558D	OP275GPZ
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Nisshinbo Micro Devices	Nisshinbo Micro Devices	Analog Devices
Amplifier Type	J-FET	J-FET	J-FET	Audio	General Purpose	Audio
Number of Circuits	2	2	2	2	2	2
Slew Rate (V/µs)	13	13	13	5	1	22
Gain Bandwidth Product (MHz)	3	3	4	11	3	9
Current - Input Bias (pA/nA)	50 pA	50 pA	50 pA	100 nA	25 nA	100 nA
Voltage - Input Offset (mV/µV)	5 mV	5 mV	5 mV	300 µV	500 µV	1 mV
Current - Supply (mA)	3.6	3.6	3.6	8	3.5	4
Current - Output / Channel (mA)	40	40	40	50	—	90
Voltage - Supply Span Min (V)	7	7	10	7	8	9
Voltage - Supply Span Max (V)	36	36	36	32	36	44
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85
Package / Case	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP
Product Status	Obsolete	Active	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Choice):

LF353P is the preferred substitute for the obsolete LF353PG4. This part maintains identical electrical specifications, J-FET input architecture, and 8-DIP package configuration. LF353P is in Active product status with ROHS3 compliance, ensuring long-term availability and regulatory compliance. Inventory availability (5,879 pieces) supports production continuity.

For Extended Temperature Range Applications:

LF353N/NOPB provides an alternative from Texas Instruments with Active product status. This variant supports extended operating temperature range (-40°C to 85°C) compared to the original specification (0°C to 70°C). Electrical performance is equivalent with a marginally higher gain bandwidth product (4 MHz vs. 3 MHz). Minimum supply voltage requirement increases to 10V, which may impact designs operating at lower supply levels.

For Performance-Enhanced Designs:

OP275GPZ (Analog Devices) offers superior slew rate (22 V/µs) and higher gain bandwidth product (9 MHz) while maintaining 8-DIP package compatibility and extended supply voltage range (9V to 44V). This part is suitable for applications requiring improved transient response and higher frequency performance. Extended operating temperature range (-40°C to 85°C) provides additional design flexibility. ROHS3 compliance ensures regulatory alignment.

For Legacy System Support:

NJM4558D remains available for systems requiring backward compatibility with existing designs. This part is classified as Not For New Designs but maintains supply voltage compatibility (8V to 36V) and 8-DIP packaging. This option is appropriate only for maintenance and repair of existing equipment.

Not Recommended:

MUSES8820D, while offering enhanced performance characteristics, exhibits significantly higher supply current (8 mA vs. 3.6 mA) and reduced maximum supply voltage (32V vs. 36V). This part is suitable only for applications where the performance enhancements justify the increased power consumption and reduced supply voltage headroom.

Frequently Asked Questions (FAQ)

Q: Can LF353P be used as a direct drop-in replacement for LF353PG4?

A: Yes. LF353P is a direct functional equivalent with identical electrical specifications, J-FET input architecture, dual-channel configuration, and 8-DIP package. Both parts operate across 7V to 36V supply range with matching slew rate (13 V/µs) and gain bandwidth product (3 MHz). The primary difference is product status: LF353P is Active while LF353PG4 is Obsolete.

Q: What is the difference between LF353P and LF353N/NOPB?

A: Both are Texas Instruments J-FET dual-channel operational amplifiers in 8-DIP packages with Active product status. LF353N/NOPB supports extended operating temperature range (-40°C to 85°C) versus LF353P (0°C to 70°C) and features marginally higher gain bandwidth product (4 MHz vs. 3 MHz). LF353N/NOPB requires minimum 10V supply voltage compared to 7V for LF353P. For applications operating at lower supply voltages or standard temperature ranges, LF353P is the preferred choice.

Q: Can MUSES8820D replace LF353PG4 in all applications?

A: MUSES8820D provides functional compatibility in 8-DIP package with dual-channel configuration but exhibits significant differences. Supply current is 2.2 times higher (8 mA vs. 3.6 mA), and maximum supply voltage is reduced to 32V (vs. 36V). Slew rate is lower (5 V/µs vs. 13 V/µs). This part is suitable only for applications where enhanced gain bandwidth product (11 MHz) and improved input offset voltage (300 µV vs. 5 mV) justify increased power consumption and reduced supply voltage headroom.

Q: Is OP275GPZ compatible with LF353PG4 designs?

A: OP275GPZ provides functional compatibility in 8-DIP package with dual-channel configuration and extended supply voltage range (9V to 44V). However, this part employs Audio amplifier topology rather than J-FET input architecture. OP275GPZ offers superior slew rate (22 V/µs) and higher gain bandwidth product (9 MHz), making it suitable for performance-enhanced designs. Extended operating temperature range (-40°C to 85°C) provides additional flexibility. Designs requiring J-FET input characteristics should use LF353P or LF353N/NOPB instead.

Q: What is the significance of the 8-DIP package specification?

A: The 8-DIP (Dual In-line Package) with 0.300" (7.62 mm) row spacing is a through-hole component package. All substitute parts maintain this identical package format, ensuring mechanical and electrical compatibility with existing printed circuit board layouts. Pin-to-pin compatibility is maintained across all listed substitutes.

Q: Why is NJM4558D listed as "Not For New Designs"?

A: NJM4558D is classified as Not For New Designs by the manufacturer, indicating that this part is in mature/legacy status with no planned product improvements or long-term support commitment. While this part remains available for existing system maintenance and repair, new designs should utilize LF353P, LF353N/NOPB, or OP275GPZ for assured long-term supply and support.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts maintain RoHS compliance: LF353P, LF353N/NOPB, and OP275GPZ are ROHS3 Compliant; MUSES8820D and NJM4558D are RoHS Compliant. This ensures regulatory compliance across all substitute options.

Q: What supply voltage range is common to all substitutes?

A: The common supply voltage range across all substitutes is 9V to 32V. LF353P and LF353N/NOPB support lower minimum voltage (7V and 10V respectively), while OP275GPZ supports higher maximum voltage (44V). Applications operating outside the 9V to 32V range require careful part selection based on specific supply voltage requirements.

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