Request Quote
(Ships tomorrow)
DS1672U-3 Equivalent & Substitute Parts
Part Overview
The DS1672U-3 is a Real Time Clock (RTC) IC Binary Counter with I2C/2-Wire Serial interface, manufactured by Analog Devices Inc./Maxim Integrated. This component provides timekeeping functionality in a compact 8-TSSOP/8-MSOP surface mount package with integrated trickle-charger capability.
The DS1672U-3 is classified as obsolete. Locating equivalent or substitute components is necessary for ongoing production support, design updates, or inventory replenishment where original stock is unavailable or depleted.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Interface | I2C, 2-Wire Serial |
| Time Format | Binary |
| Date Format | Binary |
| Voltage - Supply | 2.7V ~ 3.3V |
| Voltage - Supply, Battery | 1.3V ~ 3.63V |
| Current - Timekeeping (Max) | 500µA @ 3.3V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Mounting Type | Surface Mount |
| Features | Trickle-Charger |
Substitute Part Grouping Explanation
Substitution eligibility for the DS1672U-3 is determined by strict equivalence across the following critical parameters:
- Interface Protocol: I2C, 2-Wire Serial (mandatory match)
- Time and Date Format: Binary format (mandatory match)
- Supply Voltage Range: 2.7V ~ 3.3V (mandatory match)
- Battery Backup Voltage: 1.3V ~ 3.63V (mandatory match)
- Timekeeping Current: 500µA @ 3.3V (mandatory match)
- Operating Temperature Range: -40°C ~ 85°C (mandatory match)
- Package Type: 8-TSSOP, 8-MSOP surface mount (mandatory match)
- Functional Features: Trickle-Charger capability (mandatory match)
The DS1672U-3+ meets all substitution criteria and is classified as a direct equivalent.
Parameter Comparison
| Parameter | DS1672U-3 (Main Part) | DS1672U-3+ (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Identical |
| Category | Clock/Timing | Clock/Timing | Identical |
| Type | Binary Counter | Binary Counter | Identical |
| Interface | I2C, 2-Wire Serial | I2C, 2-Wire Serial | Identical |
| Time Format | Binary | Binary | Identical |
| Date Format | Binary | Binary | Identical |
| Voltage - Supply | 2.7V ~ 3.3V | 2.7V ~ 3.3V | Identical |
| Voltage - Supply, Battery | 1.3V ~ 3.63V | 1.3V ~ 3.63V | Identical |
| Current - Timekeeping (Max) | 500µA @ 3.3V | 500µA @ 3.3V | Identical |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | Identical |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| Features | Trickle-Charger | Trickle-Charger | Identical |
| Product Status | Obsolete | Active | Substitute is Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | Substitute is Compliant |
| Packaging | Not specified | Tube | Substitute has defined packaging |
Engineering Selection Recommendations
The DS1672U-3+ is a direct functional and electrical equivalent to the DS1672U-3. Selection of the DS1672U-3+ is supported by the following factors:
- Product Status: The DS1672U-3+ is classified as Active, ensuring ongoing manufacturer support and availability, whereas the DS1672U-3 is Obsolete.
- Regulatory Compliance: The DS1672U-3+ is ROHS3 Compliant, meeting current environmental and regulatory requirements. The DS1672U-3 is RoHS non-compliant.
- Electrical Equivalence: All electrical parameters, voltage ranges, current specifications, and operating temperature ranges are identical.
- Functional Equivalence: Both parts share identical interface protocols, time/date formats, package types, and integrated features.
- Packaging Definition: The DS1672U-3+ is supplied in Tube packaging, providing defined handling and storage specifications.
Frequently Asked Questions (FAQ)
Q: Can the DS1672U-3+ be used as a direct replacement for the DS1672U-3 in existing designs?
A: Yes. The DS1672U-3+ is electrically and functionally equivalent across all specified parameters. No design modifications are required. Both parts share identical pinouts, voltage specifications, interface protocols, and package dimensions.
Q: What is the primary advantage of selecting the DS1672U-3+ over the DS1672U-3?
A: The DS1672U-3+ is an Active product with ROHS3 compliance, whereas the DS1672U-3 is Obsolete and RoHS non-compliant. The DS1672U-3+ ensures long-term availability and regulatory compliance for new production and design updates.
Q: Are the package dimensions identical between DS1672U-3 and DS1672U-3+?
A: Yes. Both parts use the 8-TSSOP, 8-MSOP package with 0.118" width and 3.00mm height. Surface mount footprints are identical.
Q: What is the difference between the DS1672U-3 and DS1672U-3+ part numbers?
A: The DS1672U-3+ designation indicates an updated version with improved compliance status (ROHS3 Compliant) and Active product status. The electrical and functional specifications remain unchanged.
Q: Is the I2C interface protocol identical on both parts?
A: Yes. Both the DS1672U-3 and DS1672U-3+ implement I2C/2-Wire Serial interface with identical protocol specifications. No firmware or software modifications are required when substituting between these parts.
Q: What are the battery backup voltage specifications for these RTC components?
A: Both parts support battery backup operation across the voltage range of 1.3V ~ 3.63V, enabling continuous timekeeping during main power loss.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts