MAX414BESD+ Equivalent & Substitute Parts

Part Overview

The MAX414BESD+ is a general purpose operational amplifier integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This device contains four independent amplifier circuits in a 14-SOIC surface mount package and is designed for applications requiring moderate bandwidth and low input bias current characteristics. The MAX414BESD+ is classified as an obsolete product, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility within the 14-SOIC package form factor while meeting the electrical performance envelope of the original specification.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Slew Rate	4.5	V/µs
Gain Bandwidth Product	28	MHz
Current - Input Bias	80	nA
Voltage - Input Offset	150	µV
Current - Supply (per 4 Channels)	2.5	mA
Current - Output / Channel	35	mA
Voltage - Supply Span (Min)	4.8	V
Voltage - Supply Span (Max)	10.5	V
Operating Temperature	-40 to 85	°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MAX414BESD+ is determined by the following critical parameters: package form factor (14-SOIC), number of circuits (4), surface mount mounting type, operating temperature range (-40°C to 85°C), supply voltage compatibility (4.8V to 10.5V minimum span), and regulatory compliance (ROHS3, REACH Unaffected, EAR99 classification).

The substitute parts are grouped into two functional categories:

Category 1: General Purpose Rail-to-Rail Amplifiers MAX4472ESD+T operates as a direct functional replacement with rail-to-rail output capability, reduced supply current, and lower input bias current. This part maintains the 14-SOIC package and four-circuit configuration but operates at lower supply voltages (1.8V to 5.5V) and exhibits significantly reduced bandwidth characteristics.

Category 2: Current Feedback Amplifiers AD8004ARZ-14, AD8004ARZ-14-REEL7, LT1397CS#PBF, and LT1397CS#TRPBF are current feedback topology amplifiers that provide higher slew rates and bandwidth performance compared to the original general purpose design. These parts maintain the 14-SOIC package, four-circuit configuration, and surface mount characteristics. AD8004 variants support supply voltages from 4V to 12V. LT1397 variants support supply voltages from 4V to 12V but operate within a narrower temperature range (0°C to 70°C).

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, REACH unaffected status, and EAR99 classification.

Parameter Comparison

Parameter	MAX414BESD+	MAX4472ESD+T	AD8004ARZ-14	AD8004ARZ-14-REEL7	LT1397CS#PBF	LT1397CS#TRPBF
Amplifier Type	General Purpose	General Purpose	Current Feedback	Current Feedback	Current Feedback	Current Feedback
Number of Circuits	4	4	4	4	4	4
Output Type	—	Rail-to-Rail	—	—	—	—
Slew Rate (V/µs)	4.5	0.002	3000	3000	800	800
Gain Bandwidth Product (MHz)	28	0.009	30	30	—	—
-3dB Bandwidth (MHz)	—	—	250	250	400	400
Current - Input Bias (nA/µA)	80 nA	200 pA	40 µA	40 µA	10 µA	10 µA
Voltage - Input Offset (µV)	150	500	1000	1000	1000	1000
Current - Supply (mA)	2.5	0.75	14	14	4.6	4.6
Current - Output / Channel (mA)	35	36	50	50	80	80
Voltage - Supply Span Min (V)	4.8	1.8	4	4	4	4
Voltage - Supply Span Max (V)	10.5	5.5	12	12	12	12
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	0 to 70	0 to 70
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Option	Tube	Tape & Reel (TR)	Tube	Cut Tape (CT) & Digi-Reel®	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Functional Replacement with Active Product Status:

MAX4472ESD+T is the recommended substitute when the application requires a general purpose amplifier topology with active product status and extended temperature range (-40°C to 85°C). This part maintains the four-circuit configuration and 14-SOIC package. However, the MAX4472ESD+T operates at significantly reduced bandwidth (9 kHz gain bandwidth product versus 28 MHz) and exhibits substantially lower slew rate (0.002 V/µs versus 4.5 V/µs). Selection of this part is appropriate only for low-frequency signal conditioning applications where the reduced bandwidth does not compromise circuit performance.

For High-Speed Applications Requiring Extended Bandwidth:

AD8004ARZ-14 and AD8004ARZ-14-REEL7 are functionally equivalent current feedback amplifiers offering 30 MHz gain bandwidth product, 250 MHz -3dB bandwidth, and 3000 V/µs slew rate. These parts support the full supply voltage range (4V to 12V) and maintain the -40°C to 85°C operating temperature specification. The primary trade-off is increased supply current (14 mA versus 2.5 mA) and higher input bias current (40 µA versus 80 nA). AD8004ARZ-14 is supplied in tube packaging; AD8004ARZ-14-REEL7 is supplied in cut tape and Digi-Reel format.

For Maximum Bandwidth Performance:

LT1397CS#PBF and LT1397CS#TRPBF are current feedback amplifiers providing 400 MHz -3dB bandwidth and 800 V/µs slew rate. These parts deliver the highest bandwidth performance among all substitutes. Operating temperature range is restricted to 0°C to 70°C, which may limit applicability in extended temperature environments. Supply voltage range is 4V to 12V. Output current per channel is 80 mA. LT1397CS#PBF is supplied in tube packaging; LT1397CS#TRPBF is supplied in tape and reel format.

All substitute parts maintain ROHS3 compliance and are classified as active products with current manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can MAX4472ESD+T directly replace MAX414BESD+ in all applications?

A: MAX4472ESD+T maintains package compatibility (14-SOIC), circuit count (4), and operating temperature range (-40°C to 85°C). However, the gain bandwidth product is reduced from 28 MHz to 9 kHz, and slew rate is reduced from 4.5 V/µs to 0.002 V/µs. Direct substitution is valid only for applications where these reduced bandwidth characteristics do not degrade circuit performance. Applications requiring the original 28 MHz bandwidth must select AD8004 or LT1397 current feedback amplifiers.

Q: What is the difference between AD8004ARZ-14 and AD8004ARZ-14-REEL7?

A: Both parts are electrically identical current feedback amplifiers with identical electrical specifications. The difference is packaging format: AD8004ARZ-14 is supplied in tube packaging, while AD8004ARZ-14-REEL7 is supplied in cut tape and Digi-Reel format. Selection between these variants depends on assembly line requirements and component handling procedures.

Q: Why do LT1397CS#PBF and LT1397CS#TRPBF have a narrower operating temperature range?

A: LT1397 variants operate from 0°C to 70°C, compared to the -40°C to 85°C range of the original MAX414BESD+ and other substitutes. This narrower temperature specification reflects the design characteristics of the LT1397 current feedback amplifier. Applications requiring full -40°C to 85°C operation must select MAX4472ESD+T, AD8004ARZ-14, or AD8004ARZ-14-REEL7.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (MAX4472ESD+T, AD8004ARZ-14, AD8004ARZ-14-REEL7, LT1397CS#PBF, LT1397CS#TRPBF) are ROHS3 compliant with MSL Level 1 rating, REACH unaffected status, and EAR99 export classification, matching the regulatory profile of the original MAX414BESD+.

Q: What is the primary trade-off when selecting current feedback amplifiers (AD8004, LT1397) over general purpose amplifiers?

A: Current feedback amplifiers provide significantly higher bandwidth and slew rate performance but consume higher supply current and exhibit higher input bias current. AD8004 variants consume 14 mA supply current versus 2.5 mA for MAX414BESD+. LT1397 variants consume 4.6 mA. Applications with strict power budget constraints may require evaluation of this trade-off against bandwidth requirements.

Q: Can MAX414BESD+ be used interchangeably with any of these substitutes in existing designs?

A: No. While all parts maintain the 14-SOIC package and four-circuit configuration, electrical performance characteristics differ significantly. Circuit designs must be evaluated to confirm that substitute part specifications (bandwidth, slew rate, input bias current, supply current, output current) are compatible with application requirements before substitution.

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