DS1670E/T&R Equivalent & Substitute Parts

Part Overview

The DS1670E/T&R is a Real Time Clock (RTC) IC Portable System Controller manufactured by Analog Devices Inc./Maxim Integrated. This device provides system timing and control functions with a 3-Wire Serial interface in a 20-TSSOP surface mount package. The main part number DS1670E/T&R is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing system support and procurement.

Substiute Parts

DS1670E/T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 2362DS1670E/T&R Datasheet

Current PartRFQ

DS1670E+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 1123DS1670E+T&R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1670E/T&R is determined by the following critical parameters:

• Base Product Number: Must be DS1670 to ensure functional equivalence
• Package / Case: Must be 20-TSSOP (0.173", 4.40mm Width) for mechanical and electrical compatibility
• Interface: Must be 3-Wire Serial for circuit integration compatibility
• Voltage - Supply: Must match 2.97V ~ 3.63V range
• Voltage - Supply, Battery: Must match 2.5V ~ 3.7V range
• Current - Timekeeping (Max): Must not exceed 100µA @ 3.3V
• Operating Temperature: Must support 0°C ~ 70°C range
• Mounting Type: Must be Surface Mount
• Time Format: Must support HH:MM:SS (12/24 hr)
• Date Format: Must support YY-MM-DD-dd
• Features: Must include Alarm, Leap Year, and Watchdog Timer

Parameter Comparison

Engineering Selection Recommendations

The DS1670E+T&R is a direct functional equivalent to the DS1670E/T&R. Both parts share identical electrical specifications, package geometry, and feature sets. The primary distinction is product status and regulatory compliance.

The DS1670E/T&R is obsolete and RoHS non-compliant. The DS1670E+T&R is currently active and ROHS3 compliant, making it the appropriate selection for new designs and ongoing procurement where regulatory compliance is required. Both parts maintain identical moisture sensitivity levels and export classifications.

Frequently Asked Questions (FAQ)

Q: Can DS1670E+T&R be used as a direct replacement for DS1670E/T&R?

A: Yes. Both parts are functionally identical with matching electrical specifications, package dimensions, interface protocols, and feature sets. The DS1670E+T&R is the active equivalent.

Q: What is the difference between DS1670E/T&R and DS1670E+T&R?

A: The primary differences are product status and regulatory compliance. DS1670E/T&R is obsolete and RoHS non-compliant. DS1670E+T&R is active and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 20-TSSOP (0.173", 4.40mm Width) package with identical pinout and mechanical dimensions.

Q: What are the supply voltage requirements?

A: Operating supply voltage is 2.97V ~ 3.63V. Battery backup supply voltage is 2.5V ~ 3.7V.

Q: What is the maximum timekeeping current consumption?

A: Maximum timekeeping current is 100µA at 3.3V supply voltage.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both parts operate across 0°C ~ 70°C.

Q: What interface protocol does this RTC use?

A: The DS1670 series uses a 3-Wire Serial interface for system communication.

Q: What time and date formats are supported?

A: Time format is HH:MM:SS with 12/24 hour selection. Date format is YY-MM-DD-dd with automatic leap year compensation.