Temperature Sensor Digital 604-00002 Equivalent & Substitute Parts

Part Overview

The Parallax Inc. 604-00002 is a digital temperature sensor designed for local temperature measurement across the range of -55°C to 125°C. This component features a 9-bit resolution output via a 3-wire interface (CLK, DQ, RST) and operates on a supply voltage of 2.7V to 5.5V. The device is packaged in an 8-DIP through-hole configuration.

The 604-00002 is classified as an obsolete product. Identifying equivalent substitute components is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements for applications utilizing this temperature sensing solution.

Substiute Parts

604-00002

Parallax Inc.In Stock: 1002604-00002 Datasheet

Current PartRFQ

DS1621+

Analog Devices Inc./Maxim IntegratedIn Stock: 3802DS1621+ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 604-00002 is determined by the following critical parameters:

Electrical Compatibility:

• Identical sensing temperature range: -55°C to 125°C
• Identical resolution: 9 bits
• Identical supply voltage range: 2.7V to 5.5V
• Identical operating temperature range: -55°C to 125°C

Mechanical Compatibility:

• Identical package type: 8-DIP (0.300", 7.62mm)
• Identical mounting type: Through Hole

Functional Compatibility:

• Digital local temperature sensing capability
• Presence of one-shot and standby mode features

The DS1621+ from Analog Devices Inc./Maxim Integrated satisfies all critical electrical and mechanical parameters. While the output interface differs (I2C versus 3-Wire), both implementations provide digital temperature data output compatible with the specified electrical operating conditions and package footprint.

Parameter Comparison

Engineering Selection Recommendations

The DS1621+ is the identified substitute for the obsolete 604-00002 based on matching electrical specifications, identical package footprint, and compatible operating parameters.

Product Status Consideration: The 604-00002 is obsolete, while the DS1621+ maintains active product status with current manufacturing support and availability. This status difference supports the selection of DS1621+ for new designs and ongoing production requirements.

Compliance Status: Both components meet RoHS compliance requirements. The DS1621+ carries ROHS3 Compliant certification, representing current regulatory alignment. Both components maintain MSL 1 (Unlimited) moisture sensitivity classification and are unaffected by REACH regulations.

Availability: The DS1621+ is available in significantly higher inventory quantities (3750 Pcs) compared to the 604-00002 (952 Pcs), supporting sustained production schedules.

Interface Consideration: The primary technical difference is the output interface protocol. The 604-00002 uses a 3-wire interface (CLK, DQ, RST), while the DS1621+ implements I2C communication. Circuit design modifications are required to accommodate this interface change, including appropriate pull-up resistor configuration for I2C operation.

Frequently Asked Questions (FAQ)

Q: Can the DS1621+ directly replace the 604-00002 without circuit modifications?

A: The DS1621+ matches all critical electrical and mechanical parameters, including temperature range, resolution, supply voltage, and package footprint. However, the output interface differs: the 604-00002 uses a 3-wire protocol while the DS1621+ uses I2C. Circuit modifications are required to implement I2C communication, including pull-up resistor configuration and firmware/software updates to support the different protocol.

Q: Are the temperature sensing ranges identical between these components?

A: Yes. Both the 604-00002 and DS1621+ provide identical local temperature sensing across -55°C to 125°C with 9-bit resolution and identical supply voltage requirements of 2.7V to 5.5V.

Q: What is the significance of the different product statuses?

A: The 604-00002 is classified as obsolete, indicating discontinued manufacturing and limited future availability. The DS1621+ maintains active product status with ongoing manufacturing support. For new designs and sustained production, the active status of DS1621+ provides supply chain continuity.

Q: Are both components RoHS compliant?

A: Yes. The 604-00002 is RoHS Compliant, and the DS1621+ is ROHS3 Compliant, representing current regulatory standards. Both components maintain MSL 1 (Unlimited) moisture sensitivity classification.

Q: What packaging format is used for the DS1621+?

A: The DS1621+ is supplied in Tube packaging, maintaining the identical 8-DIP (0.300", 7.62mm) through-hole package configuration as the 604-00002, ensuring mechanical compatibility with existing PCB designs.

Q: Does the DS1621+ include additional features compared to the 604-00002?

A: The DS1621+ includes an Output Switch feature in addition to the One-Shot and Standby Mode features present in the 604-00002. The DS1621+ also provides specified accuracy ratings of ±0.5°C (±2°C) across the 0°C to 70°C and -55°C to 125°C test conditions.