LMH6642MF Equivalent & Substitute Parts

Part Overview

The LMH6642MF is a voltage feedback operational amplifier manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This single-circuit rail-to-rail amplifier is designed for high-speed signal conditioning applications requiring 130 MHz bandwidth and 135 V/µs slew rate. The LMH6642MF carries a Last Time Buy product status, indicating discontinued production. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LMH6642MF
Category	Linear, Amplifiers
Amplifier Type	Voltage Feedback
Number of Circuits	1
Output Type	Rail-to-Rail
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-23-5
Mounting Type	Surface Mount
Slew Rate	135 V/µs
-3dB Bandwidth	130 MHz
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	12.8 V
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LMH6642MF is determined by the following critical parameters: amplifier topology (voltage feedback), single circuit configuration, rail-to-rail output capability, SOT-23-5 package compatibility, surface mount mounting type, and operating temperature range of -40°C to 85°C. All substitute parts must maintain these core electrical and mechanical specifications to ensure functional equivalence in circuit applications.

Substitute parts are grouped into two categories:

Category 1: Direct Texas Instruments Equivalents Parts LMH6642MF/NOPB and LMH6642MFX/NOPB are direct variants of the LMH6642MF base product. These parts maintain identical electrical specifications and differ only in packaging format (Cut Tape & Digi-Reel versus Cut Tape). Both carry Active product status, ensuring continued availability.

Category 2: Cross-Manufacturer Alternatives Parts from Analog Devices Inc. (LT6205 series) and Maxim Integrated (MAX4214EUK+T) provide functional substitution based on matching electrical parameters within acceptable tolerances. These parts share the same package type, mounting method, and supply voltage range, enabling direct circuit board replacement.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	-3dB Bandwidth (MHz)	Supply Voltage Min (V)	Supply Voltage Max (V)	Output Type	Package	Product Status	Inventory (Pcs)
LMH6642MF	Texas Instruments	Voltage Feedback	135	130	2.7	12.8	Rail-to-Rail	SOT-23-5	Last Time Buy	5,310
LMH6642MF/NOPB	Texas Instruments	Voltage Feedback	135	130	2.7	12.8	Rail-to-Rail	SOT-23-5	Active	38,300
LMH6642MFX/NOPB	Texas Instruments	Voltage Feedback	135	130	2.7	12.8	Rail-to-Rail	SOT-23-5	Active	23,400
LT6205CS5#TRMPBF	Analog Devices Inc.	Voltage Feedback	600	N/A	2.7	12.6	Rail-to-Rail	TSOT-23-5	Active	1,800
LT6205CS5#TRPBF	Analog Devices Inc.	Voltage Feedback	600	N/A	2.7	12.6	Rail-to-Rail	TSOT-23-5	Active	1,693
LT6205HS5#TRMPBF	Analog Devices Inc.	Voltage Feedback	600	N/A	2.7	12.6	Rail-to-Rail	TSOT-23-5	Active	1,690
LT6205HS5#TRPBF	Analog Devices Inc.	Voltage Feedback	600	N/A	2.7	12.6	Rail-to-Rail	TSOT-23-5	Active	1,328
LT6205IS5#TRMPBF	Analog Devices Inc.	Voltage Feedback	600	N/A	2.7	12.6	Rail-to-Rail	TSOT-23-5	Active	1,283
LT6205IS5#TRPBF	Analog Devices Inc.	Voltage Feedback	600	N/A	2.7	12.6	Rail-to-Rail	TSOT-23-5	Active	2,318
MAX4214EUK+T	Analog Devices Inc./Maxim Integrated	Buffer	600	230	3.15	11	Rail-to-Rail	SOT-23-5	Active	2,700

Engineering Selection Recommendations

Primary Selection: LMH6642MF/NOPB or LMH6642MFX/NOPB

For applications requiring exact electrical and performance equivalence to the LMH6642MF, select either LMH6642MF/NOPB or LMH6642MFX/NOPB. Both parts are manufactured by Texas Instruments, carry Active product status, and maintain identical specifications including 135 V/µs slew rate and 130 MHz bandwidth. LMH6642MF/NOPB offers the highest inventory availability (38,300 units), making it the preferred choice for volume production. LMH6642MFX/NOPB provides an alternative with 23,400 units in stock. Both parts are ROHS3 compliant and carry MSL 1 rating.

Secondary Selection: Analog Devices LT6205 Series

The LT6205 series (LT6205CS5#TRMPBF, LT6205CS5#TRPBF, LT6205HS5#TRMPBF, LT6205HS5#TRPBF, LT6205IS5#TRMPBF, LT6205IS5#TRPBF) provides functional substitution for applications where higher slew rate (600 V/µs) is acceptable or beneficial. These parts maintain voltage feedback topology, rail-to-rail output, and compatible supply voltage range (2.7 V to 12.6 V). Package compatibility is confirmed through TSOT-23-5 designation, which is mechanically equivalent to SOT-23-5. All LT6205 variants carry Active product status and ROHS3 compliance. Selection among LT6205 variants depends on temperature grade and packaging format requirements.

Tertiary Selection: MAX4214EUK+T

The MAX4214EUK+T functions as a buffer amplifier alternative with 600 V/µs slew rate and 230 MHz bandwidth. This part is suitable for applications where buffer amplification topology is acceptable and higher bandwidth is required. Supply voltage range (3.15 V to 11 V) is narrower than the LMH6642MF but overlaps the typical operating window. MAX4214EUK+T carries Active status and ROHS3 compliance with 2,700 units available.

Frequently Asked Questions (FAQ)

Q1: Can LMH6642MF/NOPB be used as a direct replacement for LMH6642MF?

Yes. LMH6642MF/NOPB is a direct equivalent variant of the LMH6642MF base product. Both parts share identical electrical specifications, including 135 V/µs slew rate, 130 MHz bandwidth, and -40°C to 85°C operating temperature range. The difference lies in packaging format: LMH6642MF/NOPB is supplied in Cut Tape & Digi-Reel format, while LMH6642MF uses Cut Tape. Both are surface mount SOT-23-5 packages suitable for automated assembly.

Q2: What are the key differences between LMH6642MF and LT6205 series parts?

The primary differences are slew rate and bandwidth. LMH6642MF provides 135 V/µs slew rate and 130 MHz bandwidth, while LT6205 series parts deliver 600 V/µs slew rate. The LMH6642MF is optimized for general-purpose voltage feedback applications, whereas LT6205 series is designed for video amplification with higher slew rate capability. Both maintain rail-to-rail output and compatible supply voltage ranges. Package compatibility is confirmed through SOT-23-5 and TSOT-23-5 equivalence.

Q3: Is MAX4214EUK+T a suitable substitute for LMH6642MF?

MAX4214EUK+T functions as a buffer amplifier rather than a voltage feedback amplifier. While it shares SOT-23-5 packaging, rail-to-rail output, and similar supply voltage operation, the amplifier topology differs. MAX4214EUK+T is suitable only for applications where buffer amplification is acceptable and higher bandwidth (230 MHz) is required. Direct substitution in voltage feedback circuits requires circuit redesign.

Q4: What packaging formats are available for LMH6642 equivalents?

LMH6642MF is supplied in Cut Tape (CT) format. LMH6642MF/NOPB and LMH6642MFX/NOPB are available in Cut Tape & Digi-Reel format. All three variants use SOT-23-5 surface mount package. LT6205 series parts are supplied in Tape & Reel (TR) format with TSOT-23-5 package designation. Packaging format selection depends on assembly equipment compatibility and volume requirements.

Q5: Are all substitute parts RoHS3 compliant?

Yes. All substitute parts listed—LMH6642MF/NOPB, LMH6642MFX/NOPB, LT6205 series variants, and MAX4214EUK+T—carry ROHS3 compliance certification. All parts also maintain MSL 1 (Unlimited) moisture sensitivity level and REACH Unaffected status.

Q6: Which substitute part offers the best inventory availability?

LMH6642MF/NOPB provides the highest inventory availability with 38,300 units in stock, followed by LMH6642MFX/NOPB with 23,400 units. Among cross-manufacturer alternatives, MAX4214EUK+T offers 2,700 units, while LT6205 series variants range from 1,283 to 2,318 units. For volume production requiring immediate availability, LMH6642MF/NOPB is the recommended choice.

Q7: What is the operating temperature range for all substitute parts?

LMH6642MF, LMH6642MF/NOPB, and LMH6642MFX/NOPB operate across -40°C to 85°C. LT6205 series and MAX4214EUK+T also support -40°C to 85°C operating range. All parts are suitable for industrial and commercial temperature environments.

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