47L04T-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 47L04T-I/SN is a 4 Kbit mixed-mode EEPROM plus SRAM memory IC with 8-bit data width, 400 ns maximum access time, and SOIC-8 package. It combines non-volatile EEPROM data retention with fast SRAM read/write speed in a single device for embedded logging applications. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 47L04T-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5330(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4 Kbit EEPROM+SRAM hybrid memory combining non-volatile storage with fast 400 ns SRAM access in one 8-pin SOIC device
- 8-bit memory width with standard serial or parallel interface enabling easy integration into 8-bit and 32-bit microcontroller designs
- RoHS-compliant JESD-609 e3 lead-finish in SOIC-8 package supporting automated SMT assembly and solderability
- 19-year estimated product longevity ensuring long-term supply chain stability for industrial embedded designs introduced in 2016
Applications
The 47L04T-I/SN is designed for embedded microcontroller applications requiring a combination of fast scratch-pad SRAM and non-volatile EEPROM in a single 8-pin SOIC package, such as data loggers, industrial sensor nodes, and IoT edge devices storing calibration coefficients. Its 400 ns maximum access time allows direct interface to 8-bit MCUs without wait states at clock frequencies up to 2.5 MHz, simplifying firmware development. The EEPROM portion provides data retention across power cycles without a battery backup, making it suitable for energy-harvesting and intermittently powered designs.
Specifications
| Manufacturer Package Code | SOIC-8 |
| Date Of Intro | 2016-10-10 |
| YTEOL | 19 |
| Access Time-Max | 400ns |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 4096bit |
| Memory IC Type | MEMORY CIRCUIT |
| Memory Width | 8 |
| Mixed Memory Type | EEPROM+SRAM |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 512words |
| Number of Words Code | 512 |
| Operating Mode | SYNCHRONOUS |
| Organization | 512X8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 47L04T-I/SN:
Microchip Technology Inc 4kbit SRAM with EEPROM backup, 2.7-3.6V
Frequently Asked Questions
What is the memory capacity and access time of the Microchip 47L04T-I/SN?
The 47L04T-I/SN provides 4096 bits (4 Kbit) of mixed EEPROM and SRAM memory with an 8-bit data width and a maximum access time of 400 ns, enabling direct interface to slow-to-mid-speed 8-bit microcontrollers. This capacity is sufficient for storing up to 512 bytes of calibration data, event logs, or system configuration parameters in non-volatile EEPROM.
How does the EEPROM+SRAM combination in the 47L04T-I/SN benefit embedded data logging designs?
Combining EEPROM and SRAM in a single 8-pin IC allows the firmware to use the SRAM portion as a fast 400 ns read/write buffer for temporary sensor data while committing finalized records to the non-volatile EEPROM without powering a separate external flash device. This reduces BOM from 2 memory ICs to 1 and simplifies the PCB layout, which is valuable in compact IoT sensor nodes running from a 2.5 V to 5 V supply.
Which microcontroller bus interfaces does the 47L04T-I/SN support for data transfer?
The 47L04T-I/SN uses a serial interface compatible with standard SPI or I2C protocols depending on the variant configuration, with an 8-bit data width that maps cleanly to byte-oriented MCU memory access patterns. At 400 ns maximum access time it sustains data rates sufficient for 8-bit AVR, PIC, and ARM Cortex-M0 hosts without software wait loops.
What product longevity does the 47L04T-I/SN offer, and why does it matter for industrial procurement?
The 47L04T-I/SN has a 19-year estimated end-of-life horizon from its 2016 introduction, projecting availability through at least 2035. This long production commitment allows industrial designers to build 10-year to 15-year service-life products such as utility meters, building automation controllers, and medical monitors without planning an EEPROM component re-qualification during the product's field life.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7600 | $0.76 |
| 10+ | $0.7560 | $7.56 |
| 63+ | $0.6300 | $39.69 |
| 1000+ | $0.6200 | $620.00 |
| 5000+ | $0.5900 | $2950.00 |
| 13200+ | $0.5330 | $7035.60 |
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