HCPL-0738-060E Equivalent & Substitute Parts

Part Overview

The HCPL-0738-060E is a Logic Output Optoisolator manufactured by Broadcom Limited, featuring 2 channels with open collector output configuration, 3750Vrms isolation voltage, and 15MBd data rate capability. This component is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The open collector output topology and electrical specifications define the substitution parameters for this device category.

Substiute Parts

HCPL-0738-060E

Broadcom LimitedIn Stock: 1119HCPL-0738-060E Datasheet

Current PartRFQ

ACPL-074L-060E

Broadcom LimitedIn Stock: 787ACPL-074L-060E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HCPL-0738-060E is determined by the following critical parameters that must remain consistent or compatible:

• Channel Configuration: 2 channels with 2 inputs on Side 1, 0 inputs on Side 2
• Isolation Voltage: 3750Vrms minimum
• Common Mode Transient Immunity: 10kV/µs minimum
• Data Rate: 15MBd minimum
• Package: 8-SOIC (0.154", 3.90mm Width) surface mount
• Input Type: DC
• Voltage Supply: 4.5V ~ 5.5V compatibility

The ACPL-074L-060E qualifies as a substitute based on matching isolation voltage, CMTI rating, data rate, channel count, package form factor, and supply voltage range. The primary difference is output topology: the substitute features push-pull/totem pole output instead of open collector output. This substitution is valid only in applications where the push-pull output configuration is compatible with the circuit design.

Parameter Comparison

Engineering Selection Recommendations

The ACPL-074L-060E is the manufacturer-recommended substitute for the obsolete HCPL-0738-060E. Selection of this substitute is supported by the following factors:

• Product Status: The ACPL-074L-060E maintains Active status, ensuring continued availability and manufacturing support, whereas the HCPL-0738-060E is Obsolete.
• Regulatory Compliance: The ACPL-074L-060E is ROHS3 Compliant, meeting current environmental and regulatory requirements.
• Electrical Equivalence: Both devices maintain identical isolation voltage (3750Vrms), CMTI rating (10kV/µs), data rate (15MBd), and package form factor (8-SOIC).
• Performance Enhancement: The ACPL-074L-060E provides improved propagation delay (50ns vs. 60ns) and extended operating temperature range (-40°C ~ 105°C vs. -40°C ~ 100°C).
• Supply Voltage Flexibility: The substitute supports dual supply voltage ranges (3V ~ 3.6V and 4.5V ~ 5.5V), providing additional design flexibility.

The critical design consideration is output topology: the HCPL-0738-060E uses open collector output, while the ACPL-074L-060E uses push-pull/totem pole output. This substitution is valid only when the receiving circuit is designed to accept push-pull output characteristics.

Frequently Asked Questions (FAQ)

Q: Can the ACPL-074L-060E directly replace the HCPL-0738-060E in existing designs?

A: Direct replacement is possible only if the circuit design accommodates push-pull/totem pole output. The HCPL-0738-060E open collector output requires external pull-up resistors and operates differently from the ACPL-074L-060E push-pull configuration. Circuit redesign may be necessary.

Q: Are the isolation voltage and CMTI ratings identical between these parts?

A: Yes. Both devices provide 3750Vrms isolation voltage and 10kV/µs common mode transient immunity, meeting the same high-speed isolation requirements.

Q: What is the difference in propagation delay between these optoisolators?

A: The ACPL-074L-060E provides faster propagation delay (50ns maximum) compared to the HCPL-0738-060E (60ns maximum). This 10ns improvement may benefit timing-critical applications.

Q: Does the ACPL-074L-060E support the same supply voltage as the HCPL-0738-060E?

A: The ACPL-074L-060E supports the 4.5V ~ 5.5V range of the HCPL-0738-060E, plus an additional 3V ~ 3.6V range. Existing 5V supply designs are fully compatible.

Q: Are both devices available in the same package?

A: Yes. Both the HCPL-0738-060E and ACPL-074L-060E use the 8-SOIC (0.154", 3.90mm Width) surface mount package, enabling identical PCB footprints.

Q: What is the operating temperature range difference?

A: The ACPL-074L-060E extends the upper operating temperature limit to 105°C, compared to 100°C for the HCPL-0738-060E. Both maintain the same -40°C lower limit.

Q: Is the ACPL-074L-060E RoHS compliant?

A: Yes. The ACPL-074L-060E is ROHS3 Compliant, meeting current environmental regulations. RoHS status for the HCPL-0738-060E is not specified.