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BQ2204ASNTR
Texas Instruments
IC X4 SRAM NONVOL CTRLR 16-SOIC
1755 Pcs New Original In Stock
Memory, Integrated Circuits (ICs)
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5.0 / 5.0
- (38 Ratings)
BQ2204ASNTR
Product Overview
1231653
DiGi Electronics Part Number
BQ2204ASNTR-DGManufacturer
Texas Instruments
BQ2204ASNTR
Description
IC X4 SRAM NONVOL CTRLR 16-SOICInventory
1755 Pcs New Original In Stock
Memory, Integrated Circuits (ICs)
Quantity
Minimum 1
Minimum 1
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BQ2204ASNTR Technical Specifications
Category
Memory, Controllers
Packaging
-
Series
-
Product Status
Active
Controller Type
Nonvolatile SRAM
Voltage - Supply
4.5V ~ 5.5V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.154", 3.90mm Width)
Supplier Device Package
16-SOIC
Base Product Number
BQ2204
Datasheet & Documents
HTML Datasheet
BQ2204ASNTR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
BQ2204ASNTRG4-DG
TEXTISBQ2204ASNTR
2156-BQ2204ASNTR
BQ2204ASNTRG4
Standard Package
2,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
他們的庫存管理令人驚喜，經常可以快速取得所需品，效率高超。
de desembre 02, 2025
Leurs emballages sont une garantie supplémentaire de leur fiabilité et professionnalisme.
de desembre 02, 2025
商品の安全を最優先した梱包に感動しました。
de desembre 02, 2025
対応のスピードと丁寧さに感心しました。価格も他より安く、非常にコストパフォーマンスが良いです。
de desembre 02, 2025
DiGi Electronics’ products are built to last, reflecting their focus on quality and excellence.
de desembre 02, 2025
Fast shipping keeps my projects on track—highly recommended.
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Frequently Asked Questions (FAQ)
Can the BQ2204ASNTR be used as a drop-in replacement for the DS1225A in legacy nonvolatile SRAM designs, and what design-in risks should be considered?
The BQ2204ASNTR can serve as a functional alternative to the DS1225A in nonvolatile SRAM applications, but it is not a direct drop-in replacement due to differences in control logic timing and power-switching behavior. Key risks include the BQ2204ASNTR's reliance on a specific power-supply transition profile (VCC must ramp cleanly from 5V to <3V for reliable power-down store) and lack of onboard battery supervision compared to the DS1225A. Designers should verify the host system's power sequencing and implement external monitoring if predictable save/restore cycles are critical. Additionally, confirm compatibility with existing PCB layout, as the BQ2204ASNTR uses a standard 16-SOIC but may have different pin drive strengths and noise margins.
How does the BQ2204ASNTR handle power-fail detection in environments with noisy or slowly decaying supply rails?
The BQ2204ASNTR monitors VCC directly and initiates the nonvolatile STORE operation when VCC drops below approximately 4.25V, but its effectiveness depends on clean, monotonic voltage decay. In systems with noisy or oscillating power-down profiles, the device may trigger multiple or incomplete STORE cycles, risking data corruption. To mitigate this, use a tightly regulated 5V supply with adequate bulk capacitance and consider adding hysteresis via an external supervisor IC (e.g., TLV809E) to ensure a single, controlled power-down event. Avoid long wire runs or inductive loads on VCC when using the BQ2204ASNTR in industrial environments.
What are the reliability concerns when using the BQ2204ASNTR in high-cycle write applications, and how can wear on the internal control logic be minimized?
The BQ2204ASNTR itself manages nonvolatile storage events (typically STORE and RECALL), not the SRAM cells, so SRAM endurance is not limited by the controller. However, frequent auto-store operations triggered by power cycling can stress the internal charge pump and EEPROM registers used to manage vaulting states. To maximize reliability, avoid deliberate rapid power cycling—limit to once every 10 seconds per datasheet recommendations—and ensure capacitor-backed systems use high-quality backup capacitors (e.g., 1F supercap) to prevent failed STORE events. Monitor system power stability to minimize unnecessary transitions.
What are the design trade-offs when selecting between the BQ2204ASNTR and the BQ4802L for battery-backed SRAM systems?
The BQ2204ASNTR lacks an integrated timekeeper and battery charger, making it suitable only for pure nonvolatile SRAM backup with a capacitor, while the BQ4802L includes RTC and battery management for long-term, battery-powered applications. Choose the BQ2204ASNTR when minimizing solution size and avoiding battery regulations is a priority, but be aware of its dependency on external capacitance for STORE operations. The BQ4802L offers better data retention in extended outages but requires more PCB area and battery handling. Use the BQ2204ASNTR where predictable power fail events occur and cost or regulatory compliance is a concern.
How should the RECALL function of the BQ2204ASNTR be verified during system startup, and what failures could prevent successful restore?
To ensure reliable RECALL with the BQ2204ASNTR, monitor that VCC ramps monotonically to at least 4.5V within the specified startup time and that the RECALL initiation circuit is not blocked by residual capacitance on the RST pin. Common startup failures include sluggish power ramps (due to undersized input capacitors) causing delayed or skipped RECALL, and improper decoupling leading to internal logic glitches. Add a 0.1μF ceramic capacitor close to VCC and GND pins and verify with oscilloscope capture of the RECALL timing waveform. Avoid pulling the RST pin low during power-up, as this can inhibit the restore sequence.
Quality Assurance (QC)
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BQ2204ASNTR CAD Models
Texas Instruments BQ2204ASNTR PCB symbols & footprints
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