CHIPNOBO

Semiconductor Replacement Engineering & Supply Continuity

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PRODUCT DATASHEET

ChipNobo MPN

NB2127AT/1,518

GLOBAL BRAND CROSS-REFERENCE

NXP USA Inc.

IC RTC CLOCK/CALENDAR I2C 20SO

PCF2127AT/1,518

  • High-reliability design
  • Long-term stable supply
  • RoHS compliant
IC RTC CLOCK/CALENDAR I2C 20SO

1. PRODUCT POSITIONING

NB2127AT/1,518 is a product identity corresponding to the reference product PCF2127AT/1,518. This document presents the available product specifications, mechanical/package information and compatibility summary for engineering and procurement reference.

This document is a product information. Compatibility conclusions should be read together with the applicable Cross-Reference Identification (CID) rule, package/pin verification and engineering review record.

2. TECHNICAL SPECIFICATION COMPARISON (core parameters)
Parameter NXP USA Inc. PCF2127AT/1,518 ChipNobo NB2127AT/1,518 Match
Part Status Active Active ✓
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C ✓
Mounting Type Surface Mount Surface Mount ✓
Programmable Not Verified Not Verified ✓
Type Clock/Calendar Clock/Calendar ✓
Time Format HH:MM:SS (12/24 hr) HH:MM:SS (12/24 hr) ✓
Date Format YY-MM-DD-dd YY-MM-DD-dd ✓
Package / Case 20-SOIC (0.295", 7.50mm Width) 20-SOIC (0.295", 7.50mm Width) ✓
Supplier Device Package 20-SO 20-SO ✓
Interface I2C, 2-Wire Serial I2C, 2-Wire Serial ✓
Memory Size 512B 512B ✓
Voltage - Supply 1.8V ~ 4.2V 1.8V ~ 4.2V ✓
Voltage - Supply, Battery 1.8V ~ 4.2V 1.8V ~ 4.2V ✓
Current - Timekeeping (Max) 1.5µA @ 3.3V 1.5µA @ 3.3V ✓
Features Alarm Leap Year Square Wave Output SRAM TCXO/Crystal Watchdog Timer Alarm Leap Year Square Wave Output SRAM TCXO/Crystal Watchdog Timer ✓
RoHS Status ROHS3 Compliant ROHS3 Compliant ✓
Moisture Sensitivity Level (MSL) 3 (168 Hours) 3 (168 Hours) ✓

CHIPNOBO

Semiconductor Replacement Engineering & Supply Continuity

Real Time Clocks

PRODUCT DATASHEET

3. SUPPLY & LIFECYCLE
ChipNobo Number NB2127AT/1,518
Lifecycle status Active
NRND No
EOL No
PCN monitor No
Last buy date No Deadline
Alternate availability Sufficient
4. APPLICATION AREAS
AI Server GPU Server
Data Center Switch Vehicle Communication Network (CAN/CAN FD/LIN)
Smart Cockpit Industrial Computer
PLC Controller Semiconductor Equipment
5G Base Station IoT Gateway
Medical Monitoring Equipment Smart Home Gateway

5. ENGINEERING & COMMERCIAL NOTES

  • The ChipNobo MPN is the public product identity used by ChipNobo for this replacement reference.
  • The original manufacturer and original MPN are retained as reference identity information.
  • Product PDF data are intended for engineering, procurement and supply-continuity reference.
  • Current price, MOQ, lead time, available supply source and regional availability should be confirmed through RFQ.
  • For customer-specific qualification, PCB footprint approval, reliability requirements or design-in approval, the customer should perform the applicable validation process.

CHIPNOBO REPLACEMENT · Semiconductor Replacement Engineering & Supply Continuity Partner

Document purpose: Product Information / Replacement Reference · Generated from the product data supplied for NB2127AT/1,518.

Important Notice & Disclaimer

Document ID: 【CN-DATA-NB2127AT/1,518】 Revision: 1.0 Status: Released

The information provided by ChipNobo is intended solely for engineering evaluation, product selection, procurement, and supply continuity reference purposes. Product specifications, lifecycle status, availability, and other information are subject to change without notice. Customers should always verify relevant information against the latest official documentation published by the respective manufacturers.

Cross-reference and replacement recommendations are provided for engineering reference purposes only. They do not constitute a guarantee of pin-to-pin compatibility, interchangeability, or suitability for any particular application. Customers are responsible for conducting all necessary engineering reviews, testing, and qualification prior to product selection and use.

Manufacturer names, trademarks, and part numbers are referenced solely for product identification purposes. Their use does not imply any affiliation with, endorsement by, or authorization from the respective manufacturers, unless expressly stated otherwise.

To the maximum extent permitted by applicable law, ChipNobo makes no warranties, express or implied, regarding the completeness, accuracy, or suitability of the information provided and shall not be liable for any loss or damage arising from its use or reliance, except as otherwise expressly agreed in writing and subject to applicable law.