Request Quote
(Ships tomorrow)
Equivalent & Substitute Parts for 24AA024HT-I/ST
Part Overview
The 24AA024HT-I/ST is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring I2C interface with 400 kHz clock frequency and 900 ns access time. This non-volatile memory device is packaged in 8-TSSOP surface mount configuration and operates across a wide voltage range of 1.7V to 5.5V with temperature range of -40°C to 85°C. The part is ROHS3 compliant and currently active in production with 3204 units in stock. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package type, and electrical operating parameters that ensure functional interchangeability in circuit applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Memory Size | 2Kbit |
| Memory Organization | 256 x 8 |
| Memory Interface | I2C |
| Clock Frequency | 400 kHz |
| Access Time | 900 ns |
| Write Cycle Time | 5ms |
| Voltage Supply Range | 1.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Package Type | 8-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the 24AA024HT-I/ST are categorized into two groups based on substitution criteria:
Group 1: Parametric Equivalents (Direct Substitutes) These parts maintain identical electrical and mechanical specifications as the main part, including 2Kbit memory capacity, 256 x 8 organization, I2C interface, 400 kHz clock frequency, 900 ns access time, 5ms write cycle time, 1.7V to 5.5V supply voltage, -40°C to 85°C operating temperature, and 8-TSSOP package. Parts in this group are functionally interchangeable without circuit modification.
Group 2: Manufacturer Recommended Substitutes (Enhanced Performance) These parts share the core specifications (2Kbit capacity, 256 x 8 organization, I2C interface, 8-TSSOP package, 1.7V to 5.5V supply voltage, -40°C to 85°C operating temperature) but feature enhanced clock frequency (1 MHz instead of 400 kHz) and faster access time (550 ns instead of 900 ns). These parts are backward compatible and provide performance improvement while maintaining electrical and mechanical compatibility.
Group 3: Alternative Manufacturer Substitutes Parts from Rohm Semiconductor and STMicroelectronics that meet the same memory capacity, interface, and package requirements with variations in supply voltage range, operating temperature, and performance characteristics.
Parameter Comparison
| Part Number | Manufacturer | Memory Size | Clock Frequency | Access Time | Supply Voltage | Operating Temp | Package | Status |
|---|---|---|---|---|---|---|---|---|
| 24AA024HT-I/ST | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | Active |
| 24AA024T-I/ST | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | Active |
| 24AA02T-I/ST | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | Active |
| 34AA02T-E/ST | Microchip Technology | 2Kbit | 400 kHz | 900 ns | 1.7V ~ 5.5V | -40°C ~ 125°C | 8-TSSOP | Active |
| AT24CS02-XHM-T | Microchip Technology | 2Kbit | 1 MHz | 550 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | Active |
| AT24HC02C-XHM-T | Microchip Technology | 2Kbit | 1 MHz | 550 ns | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | Active |
| AT34C02D-XHM-T | Microchip Technology | 2Kbit | 1 MHz | Not Specified | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP | Active |
| BR24G02FVT-3AGE2 | Rohm Semiconductor | 2Kbit | 1 MHz | Not Specified | 1.6V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP-B | Active |
| BR24G02FVT-3GE2 | Rohm Semiconductor | 2Kbit | 400 kHz | Not Specified | 1.6V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP-B | Active |
| BR34E02FVT-3E2 | Rohm Semiconductor | 2Kbit | 400 kHz | Not Specified | 1.7V ~ 5.5V | -40°C ~ 85°C | 8-TSSOP-B | Active |
| M24C02-DRDW8TP/K | STMicroelectronics | 2Kbit | 1 MHz | 450 ns | 1.8V ~ 5.5V | -40°C ~ 105°C | 8-TSSOP | Active |
Engineering Selection Recommendations
Direct Substitution (No Circuit Modification Required)
The parts 24AA024T-I/ST and 24AA02T-I/ST are parametric equivalents to the 24AA024HT-I/ST. These Microchip Technology devices maintain identical electrical specifications including 400 kHz clock frequency, 900 ns access time, and -40°C to 85°C operating temperature range. All three parts are ROHS3 compliant with MSL rating of 1 (Unlimited) and are suitable for direct pin-for-pin replacement.
Enhanced Performance Substitution (Backward Compatible)
The Microchip Technology parts AT24CS02-XHM-T and AT24HC02C-XHM-T provide enhanced performance with 1 MHz clock frequency and 550 ns access time while maintaining full backward compatibility. These parts operate within the same voltage range (1.7V to 5.5V) and temperature range (-40°C to 85°C) as the main part. The AT34C02D-XHM-T offers similar performance enhancement with 1 MHz operation. These substitutes are suitable when improved speed performance is beneficial to the application.
Extended Temperature Range Option
The 34AA02T-E/ST from Microchip Technology extends the operating temperature range to -40°C to 125°C while maintaining all other electrical specifications identical to the main part. This option is applicable for applications requiring operation at elevated temperatures.
Alternative Manufacturer Options
Rohm Semiconductor BR24G02FVT-3GE2 and BR34E02FVT-3E2 provide 400 kHz operation in 8-TSSOP-B package with supply voltage range of 1.6V to 5.5V (lower minimum than main part). The BR24G02FVT-3AGE2 offers 1 MHz operation. STMicroelectronics M24C02-DRDW8TP/K provides 1 MHz operation with extended temperature range to 105°C and AEC-Q100 automotive qualification, with minimum supply voltage of 1.8V.
All substitute parts maintain ROHS3 compliance and MSL rating of 1 (Unlimited) except AT34C02D-XHM-T which has MSL rating of 3 (168 Hours).
Frequently Asked Questions (FAQ)
Q: Can I use 24AA024T-I/ST as a direct replacement for 24AA024HT-I/ST?
A: Yes. The 24AA024T-I/ST is a parametric equivalent with identical electrical and mechanical specifications. Both parts feature 2Kbit capacity, 400 kHz I2C interface, 900 ns access time, 1.7V to 5.5V supply voltage, -40°C to 85°C operating temperature, and 8-TSSOP package. No circuit modification is required.
Q: What is the difference between 400 kHz and 1 MHz clock frequency options?
A: The clock frequency determines the maximum I2C bus speed. The main part 24AA024HT-I/ST operates at 400 kHz, while substitute parts AT24CS02-XHM-T and AT24HC02C-XHM-T operate at 1 MHz. The 1 MHz parts also feature faster access time (550 ns versus 900 ns). These faster parts are backward compatible and can operate at lower speeds if required by the application.
Q: Are Rohm Semiconductor parts compatible with the 24AA024HT-I/ST?
A: Rohm Semiconductor BR24G02FVT-3GE2 and BR34E02FVT-3E2 are compatible substitutes. Both maintain 2Kbit capacity, 256 x 8 organization, I2C interface, 400 kHz operation, 5ms write cycle time, and 8-TSSOP package. The supply voltage range is 1.6V to 5.5V (lower minimum than the main part). Package designation is 8-TSSOP-B, which is mechanically compatible with standard 8-TSSOP footprints.
Q: What is the advantage of the STMicroelectronics M24C02-DRDW8TP/K?
A: The M24C02-DRDW8TP/K offers 1 MHz clock frequency with 450 ns access time and extended operating temperature range to 105°C. It includes AEC-Q100 automotive qualification. The minimum supply voltage is 1.8V. This part is suitable for automotive applications requiring higher performance and extended temperature operation.
Q: Does the 34AA02T-E/ST offer any advantage over the main part?
A: The 34AA02T-E/ST extends the operating temperature range to -40°C to 125°C while maintaining all other specifications identical to the main part. This option is applicable for applications requiring operation at elevated temperatures beyond 85°C.
Q: What does MSL rating 1 (Unlimited) mean?
A: MSL (Moisture Sensitivity Level) rating of 1 indicates unlimited shelf life without moisture exposure precautions. Parts with this rating do not require special moisture control during storage and handling. The AT34C02D-XHM-T has MSL rating of 3 (168 Hours), which requires moisture control measures.
Q: Can I substitute a 1 MHz part in a circuit designed for 400 kHz operation?
A: Yes. The 1 MHz parts (AT24CS02-XHM-T, AT24HC02C-XHM-T, AT34C02D-XHM-T) are backward compatible and can operate at lower I2C bus speeds. They will function correctly in circuits designed for 400 kHz operation while providing the capability for higher speed operation if needed in future applications.
Q: What is the difference between 8-TSSOP and 8-TSSOP-B packages?
A: Both packages are mechanically compatible with identical 0.173" width and 4.40mm dimensions. The 8-TSSOP-B designation used by Rohm Semiconductor indicates a variant of the standard 8-TSSOP package. Pin configuration and footprint compatibility are maintained for direct substitution.
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