My Inquiry
My Account
Microchip Technology 24LC04BHT-I/ST
- Part No.:
- 24LC04BHT-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC04BHT-I/ST.pdf
- Description:
- IC EEPROM 4KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,916
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24LC04BHT-I/ST from Microchip Technology Inc. is a 4-Kbit I²C-compatible serial EEPROM organized as two 256 × 8-bit blocks, operating from 2.5V to 5.5V with industrial temperature range (–40°C to +85°C), 400 kHz max clock frequency, and hardware write-protect for half-array (100h–1FFh). It is used in embedded systems for parameter storage, calibration data retention, and configuration backup.
For engineers reviewing the 24LC04BHT-I/ST datasheet, 24LC04BHT-I/ST pinout, 24LC04BHT-I/ST application, or 24LC04BHT-I/ST equivalent, this page delivers verified electrical specs, package mapping to ST (8-lead SOIC), I²C timing compliance, endurance (1M cycles), and real-world use context - all confirmed against Microchip DS20002119C.
Technical Context
The 24LC04BHT-I/ST implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address counter supports current-address, random, and sequential read modes, while the 16-byte page buffer enables efficient multi-byte writes.
Write protection is implemented via the WP pin: tied to VCC, it disables writes to addresses 100h–1FFh (half-array); tied to VSS, full-array access is enabled. The device uses self-timed erase/write cycles with 5 ms maximum page write time and supports ACK polling to detect write completion without fixed delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (512 bytes), organized as two 256 × 8-bit blocks - enables segmented firmware/config storage with independent block addressing. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains; excludes sub-2.5V operation unlike 24AA04H. |
| Max Clock Frequency | 400 kHz - supports standard-mode I²C; not rated for 1 MHz (reserved for 24FC04H). |
| Write Endurance | 1,000,000 cycles - ensures reliable reprogramming over product lifetime in field-updatable systems. |
| Data Retention | 200 years - guarantees nonvolatile storage integrity across extended deployment periods without refresh. |
| Page Write Buffer | 16 bytes - reduces I²C transaction count for bulk writes; requires software boundary checking to avoid wraparound. |
| Standby Current | 1 µA (I-temp.) - minimizes quiescent power in battery-backed or low-power sleep states. |
Pinout & Package
24LC04BHT-I/ST is packaged in an 8-lead SOIC (SN) with 3.90 mm body width per Microchip drawing C04-057-SN Rev F. Pin 1 is marked by a beveled corner or dot; pins A0–A2 are unconnected (NC) and may be left floating or tied to VSS/VCC without functional impact.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Address Input (NC) | No internal connection; unused for device addressing - simplifies PCB routing and eliminates external pull-up/down requirements. |
| VSS | Ground Reference | Primary return path for I²C bus and internal circuitry; must be low-impedance to support noise immunity and stable logic thresholds. |
| SDA | Serial Data I/O | Open-drain bidirectional line requiring external pull-up (2 kΩ typical for 400 kHz); carries address, data, and ACK/NACK signals. |
| SCL | Serial Clock Input | Input-only clock line synchronized to host controller; edge-sensitive for Start/Stop detection and data sampling. |
| WP | Write-Protect Control | Logic-level input: VSS enables full-array writes; VCC protects addresses 100h–1FFh - provides hardware-level security for critical configuration data. |
| VCC | Power Supply | Single 2.5–5.5V supply powering EEPROM core and I/O buffers; decoupling capacitor (0.1 µF) required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt Trigger Inputs | 5% hysteresis (0.05×VCC) on SDA/SCL - rejects high-frequency noise and prevents false edge detection on noisy PCBs or long traces. |
| Output Slope Control | Controlled rise/fall times (TR/TF ≤300 ns at 5V) - eliminates ground bounce and EMI during signal transitions. |
| Hardware Write-Protect | Dedicated WP pin enabling half-array (100h–1FFh) lock - prevents accidental overwrite of calibrated or safety-critical parameters without firmware involvement. |
| Page Write Buffer | 16-byte internal buffer - allows up to 16 bytes to be written in one I²C transaction, reducing bus overhead and improving throughput vs. byte-write mode. |
| ESD Protection | >4,000 V HBM - withstands handling and system-level ESD events without latch-up or parametric shift. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offsets and gain coefficients in programmable pressure transducers. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during power-up or recalibration routines via I²C. Use Value: Enables field-replaceable sensors with persistent calibration data; WP pin locks coefficients against runtime corruption. |
Use Scenario: Retaining user-selected therapy parameters and device ID in portable infusion pumps. IC Role / Device Role / Timing Role: Secure parameter store supporting audit trails and regulatory traceability requirements. Use Value: 200-year data retention meets FDA long-term medical device record-keeping mandates; 1 µA standby current extends battery life. |
| Automotive Body Control Module | Consumer Appliance Settings |
Use Scenario: Saving seat/mirror position presets and lighting profiles in AEC-Q100-compliant BCMs. IC Role / Device Role / Timing Role: I²C slave device interfacing with MCU over shared vehicle bus; operates across –40°C to +85°C. Use Value: AEC-Q100 qualification ensures reliability under automotive thermal cycling; 400 kHz speed supports responsive UI updates. |
Use Scenario: Preserving user preferences (temperature, cycle type, language) in smart washing machines after power loss. IC Role / Device Role / Timing Role: Low-cost, low-power configuration memory accessible during boot and menu navigation. Use Value: 1M write cycles tolerate frequent setting changes; 2.5V minimum VCC ensures compatibility with brown-out tolerant 3.3V rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA04HT-I/ST | Wider VCC range (1.7–5.5V); same 400 kHz max clock but de-rates to 100 kHz below 2.5V. | Supports ultra-low-voltage systems (e.g., coin-cell powered devices) where 24LC04BHT-I/ST cannot operate. | Select when sub-2.5V operation is required; otherwise, 24LC04BHT-I/ST offers tighter VCC tolerance and identical pinout/package. |
| AT24C04-PU | Same 4-Kbit size, 2.5–5.5V, 400 kHz, and SOIC-8 package; but only 100k write cycles and 100-year retention. | Lacks AEC-Q100 qualification and half-array write-protect; suitable for cost-sensitive consumer-grade designs. | Choose for non-automotive, non-critical applications where endurance and qualification are secondary to BOM cost. |
Compared with 24AA04HT-I/ST, the 24LC04BHT-I/ST trades voltage flexibility for guaranteed 400 kHz performance across its full 2.5–5.5V range; versus AT24C04-PU, it delivers 10× higher endurance, 2× longer data retention, and automotive qualification - making it optimal for industrial and safety-aware systems.
Availability
24LC04BHT-I/ST is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant EEPROMs.
Supply support for 24LC04BHT-I/ST includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on reliability, longevity, and embedded system integration.
The 24LC04BH family is designed for robust, low-power nonvolatile storage in space-constrained, noise-prone environments - targeting industrial automation, automotive subsystems, and medical instrumentation where data integrity and qualification matter.
FAQ
What is the maximum I²C clock frequency supported by the 24LC04BHT-I/ST?
The 24LC04BHT-I/ST supports a maximum I²C clock frequency of 400 kHz across its full 2.5V to 5.5V VCC range. Unlike the 24FC04H variant, it is not rated for 1 MHz operation. This 400 kHz limit applies under industrial temperature conditions (–40°C to +85°C) and ensures reliable timing margins per Table 1-2 of DS20002119C.
Does the 24LC04BHT-I/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC04BHT-I/ST requires external pull-up resistors on both SDA and SCL because these pins are open-drain. For 400 kHz operation, a 2 kΩ resistor to VCC is recommended. Pull-up strength directly affects rise time and noise immunity - undersized resistors increase susceptibility to bus glitches, while oversized ones slow transitions beyond AC limits.
How does the write-protect (WP) pin function on the 24LC04BHT-I/ST?
When the WP pin of the 24LC04BHT-I/ST is tied to VCC, write operations to memory addresses 100h–1FFh (half-array) are inhibited; reads remain fully functional. When tied to VSS, full-array write access is enabled. This hardware-level protection operates independently of firmware, preventing accidental or malicious overwrite of critical configuration data.
What is the endurance rating of the 24LC04BHT-I/ST, and how is it tested?
The 24LC04BHT-I/ST is rated for 1,000,000 write/erase cycles at 25°C and 5.5V, measured in page mode per Note 4 in DS20002119C. This endurance is ensured by characterization (not 100% tested per lot) and reflects real-world usage where page writes dominate over single-byte operations - a key factor in determining field lifetime for frequently updated parameters.
Is the 24LC04BHT-I/ST AEC-Q100 qualified, and what grade does it meet?
Yes, the 24LC04BHT-I/ST is AEC-Q100 qualified for automotive applications. It meets Grade 3 (–40°C to +85°C), matching its industrial temperature rating. This qualification covers stress testing for reliability, including HTOL, TCT, and ESD - confirming suitability for body electronics, infotainment, and other non-powertrain automotive subsystems.
24LC04BHT-I/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 4Kbit
- Memory Organization:
- 256 x 8 x 2
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24LC04BHT-I/ST FAQ
1.How can I place an order for 24LC04BHT-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC04BHT-I/ST on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 24LC04BHT-I/ST reliable?
The price and inventory of 24LC04BHT-I/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC04BHT-I/ST is usually 5 days.
3.What payment methods are accepted for 24LC04BHT-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC04BHT-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC04BHT-I/ST?
24LC04BHT-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC04BHT-I/ST order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 24LC04BHT-I/ST?
For technical support, including 24LC04BHT-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC04BHT-I/ST requirements.
6.How does Aetrix verify that 24LC04BHT-I/ST is sourced from the original manufacturer or authorized distributors?
All 24LC04BHT-I/ST products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 24LC04BHT-I/ST meets industry standards.
7.What is the process for return or replacement of 24LC04BHT-I/ST?
All 24LC04BHT-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC04BHT-I/ST, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 24LC04BHT-I/ST part is unused and in its original packaging.
Return procedure for 24LC04BHT-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC04BHT-I/ST Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
