HCPL-7840#500 Equivalent & Substitute Parts

Part Overview

The HCPL-7840#500 is an isolation amplifier manufactured by Broadcom Limited, designed for single-circuit differential signal conditioning applications. This component operates as a linear amplifier with galvanic isolation, suitable for industrial and automotive signal acquisition systems. The part is currently in active production status with 752 units available in inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, packaging preferences, or compliance requirements.

Substiute Parts

HCPL-7840#500

Broadcom LimitedIn Stock: 832HCPL-7840#500 Datasheet

Current PartRFQ

HCPL-7840-500E

Broadcom LimitedIn Stock: 15685HCPL-7840-500E Datasheet

DirectRFQ

AMC1100DUB

Texas InstrumentsIn Stock: 2232AMC1100DUB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-7840#500 is determined by the following critical parameters:

Primary Substitution Criteria:

• Amplifier Type: Isolation
• Number of Circuits: 1
• Output Type: Differential
• -3dB Bandwidth: 100 kHz
• Mounting Type: Surface Mount
• Package / Case: 8-SMD, Gull Wing

Secondary Compatibility Parameters:

• Voltage - Supply Span: Minimum 4.5 V, Maximum 5.5 V
• Operating Temperature Range: -40°C to 85°C
• Current - Supply: 10.86 mA
• Current - Output / Channel: 15.5 mA

Two substitute parts are identified based on functional equivalence and electrical parameter alignment within the specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

HCPL-7840-500E (Broadcom Limited)

This substitute is functionally identical to the HCPL-7840#500 across all critical electrical parameters. The primary distinction is packaging format: HCPL-7840-500E is supplied in Cut Tape (CT) & Digi-Reel® format versus Tape & Reel (TR) for the main part. Both components share identical electrical specifications, operating ranges, and mechanical compatibility. HCPL-7840-500E carries ROHS3 compliance, whereas the main part is RoHS non-compliant. Inventory availability is significantly higher at 15,620 units. Selection of this substitute is appropriate when ROHS3 compliance is required or when higher inventory availability is prioritized.

AMC1100DUB (Texas Instruments)

This substitute provides functional isolation amplifier performance with differential output at 100 kHz bandwidth. Key differences include: lower supply current (5.4 mA versus 10.86 mA), higher output current capability (20 mA versus 15.5 mA), lower input offset voltage (200 µV versus 300 µV), and extended operating temperature range (-40°C to 105°C versus -40°C to 85°C). The AMC1100DUB operates across a wider supply voltage range (2.7 V to 5.5 V minimum). Supplier device package is 8-SOP rather than 8-DIP Gull Wing, requiring PCB layout modification. ROHS3 compliance is confirmed. Moisture sensitivity level is 4 (72 Hours) versus level 1 (Unlimited) for the main part. Selection of this substitute is appropriate when extended temperature operation, lower power consumption, or higher output current is required, provided PCB layout accommodates the 8-SOP package format.

Frequently Asked Questions (FAQ)

Q: Can HCPL-7840-500E be used as a direct replacement for HCPL-7840#500?

A: HCPL-7840-500E is electrically and mechanically equivalent to HCPL-7840#500. Both components share identical electrical specifications, operating parameters, and 8-DIP Gull Wing package format. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and RoHS compliance status. Direct substitution is supported without circuit modification.

Q: What are the key differences between HCPL-7840#500 and AMC1100DUB?

A: Both components function as single-circuit isolation amplifiers with differential output and 100 kHz bandwidth. AMC1100DUB offers lower supply current (5.4 mA), higher output current (20 mA), lower input offset voltage (200 µV), and extended temperature range (-40°C to 105°C). The supplier device package differs: AMC1100DUB uses 8-SOP format instead of 8-DIP Gull Wing, requiring PCB layout modification. Moisture sensitivity level is higher (MSL 4 versus MSL 1).

Q: Is PCB layout modification required when substituting with AMC1100DUB?

A: Yes. AMC1100DUB uses 8-SOP package format, whereas HCPL-7840#500 uses 8-DIP Gull Wing format. These packages have different pin configurations and footprints. PCB layout modification is necessary to accommodate the 8-SOP package. Electrical functionality remains equivalent when properly implemented.

Q: Which substitute should be selected for RoHS3 compliance applications?

A: Both HCPL-7840-500E and AMC1100DUB carry ROHS3 compliance certification. HCPL-7840#500 is RoHS non-compliant. Selection between the two compliant substitutes depends on packaging requirements, supply voltage range, operating temperature, and output current specifications.

Q: What is the impact of moisture sensitivity level differences?

A: HCPL-7840#500 and HCPL-7840-500E have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. AMC1100DUB has MSL 4 (72 Hours), requiring storage in dry conditions and limiting floor life after moisture exposure. For applications with extended storage or high-humidity environments, HCPL-7840-500E is preferred.

Q: Can AMC1100DUB operate at the same supply voltage as HCPL-7840#500?

A: AMC1100DUB operates across 2.7 V to 5.5 V supply range, which encompasses the HCPL-7840#500 range of 4.5 V to 5.5 V. AMC1100DUB supports lower minimum supply voltage (2.7 V), providing broader application flexibility. Both components function correctly within the 4.5 V to 5.5 V overlap range.