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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Analog Devices Inc./Maxim Integrated DS1230Y-150

Name: DS1230Y-150
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1230Y-150
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS1230Y-150

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Memory

Package:: 28-DIP Module (0.600", 15.24mm)

Datasheet:: DS1230Y-150.pdf

Description:: IC NVSRAM 256KBIT PAR 28EDIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DS1230Y-150 from Maxim Integrated is a 256k (32k × 8) nonvolatile static RAM with integrated lithium backup, ±10% V_CC operation (4.5V–5.5V), 70 ns access time, and 10-year data retention without external power. It functions as a drop-in replacement for volatile SRAMs in real-time clock and configuration storage applications where power loss resilience is critical.

For engineers reviewing the DS1230Y-150 datasheet, DS1230Y-150 pinout, DS1230Y-150 application, or DS1230Y-150 equivalent, key selection criteria include write-protection voltage threshold (4.25V), JEDEC-standard 28-pin DIP compatibility, battery-freshness seal behavior, and industrial-grade temperature support when ordered with IND suffix.

Technical Context

The DS1230Y-150 integrates SRAM, lithium battery, and autonomous power-fail detection circuitry into a single monolithic 28-pin DIP package. Its control logic continuously monitors V_CC, triggering automatic write protection and battery switchover when voltage falls below 4.25V - ensuring data integrity during brownout or complete power loss.

It operates as a fully static, byte-wide memory with standard parallel interface timing: CE/OE/WE control signals, 15 address lines (A0–A14), and 8 bidirectional data lines (DQ0–DQ7). No external support circuitry is required for microprocessor interfacing or battery management.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	262,144 bits (32,768 × 8), directly replaces 32k × 8 volatile SRAMs without software or address decoding changes
Access Time	70 ns - enables direct interface with 14 MHz Z80, 80C88, or 68000-class microprocessors without wait states
V_CC Range	4.5V to 5.5V (±10%) - supports wide-input industrial power rails and tolerates unregulated 5V supplies
Write Protection Threshold	4.25V (min) - triggers unconditional write lock and high-Z outputs before data corruption occurs during decay
Data Retention	10 years minimum without external power - guaranteed by sealed lithium source and internal power-switching architecture
Operating Temp	0°C to +70°C (commercial); -40°C to +85°C with IND suffix - validated across full range for embedded control systems
Package	JEDEC-standard 28-pin 740-mil Extended DIP - pin-compatible with legacy 28-pin SRAMs and 28256 EEPROMs

Pinout & Package

DS1230Y-150 uses a 28-pin JEDEC-standard Extended DIP (740-mil) package with integrated lithium battery and nonvolatile control circuitry. The package is wave-solderable only (not reflow-compatible) and features a freshness seal that electrically isolates the battery until first V_CC application above 4.25V.

Pin/Terminal	Circuit Role	Design Meaning
A0–A14	Address Inputs	15-bit address bus supporting full 32k-word addressing; TTL-compatible inputs with ≤0.8V low / ≥2.2V high thresholds
DQ0–DQ7	Data I/O	Bidirectional CMOS data bus; high-impedance on power loss or during write protection activation
CE	Chip Enable	Active-low chip select; initiates read/write cycles only when low; forces high-Z outputs when inactive
WE	Write Enable	Active-low write strobe; controls data latching; output drivers disabled when WE low and OE active
OE	Output Enable	Active-low output enable; decouples data bus from outputs during reads to prevent contention
V_CC	Power Supply	+5V supply input; powers SRAM core and control logic; monitored continuously for fail-detect response
GND	Ground	Reference return path for all signals and internal circuitry; must be low-impedance for reliable power switching
NC	No Connect	Pins 1, 3, 4, and 33 are internally unused; must remain unconnected per datasheet to avoid latch-up risk

Key Features

Feature	Design Value
Automatic Power-Fail Response	Sub-µs detection of V_CC decay below 4.25V triggers immediate write protection and battery switchover - no firmware or external supervisor required
Lithium Freshness Seal	Battery remains electrically disconnected until first V_CC >4.25V is applied - preserves full 10-year retention capacity from shipment date
Unlimited Write Cycles	No endurance limit on write operations - eliminates wear-leveling overhead and flash/EEPROM rewrite constraints
Standard Parallel Interface	Fully compatible with industry-standard SRAM timing and control signals (CE/OE/WE), enabling plug-and-play replacement
Low-Power Standby	50–150 µA standby current (CE = V_CC−0.5V) - suitable for battery-backed systems requiring multi-year shelf life

Applications

Real-Time Clock (RTC) Backup	Industrial PLC Configuration Storage
Use Scenario: Maintaining RTC registers and calendar data across AC mains failure or battery swap in metering and automation panels. IC Role / Device Role / Timing Role: Nonvolatile SRAM providing zero-latency, byte-accessible storage for timekeeping registers and alarm settings. Use Value: Eliminates need for separate RTC IC + EEPROM combo; retains accurate time for ≥10 years without refresh or checksum validation.	Use Scenario: Storing ladder logic parameters, calibration coefficients, and I/O mapping in programmable logic controllers deployed in factory environments. IC Role / Device Role / Timing Role: Configuration memory holding user-defined operational constants that must survive unexpected shutdowns. Use Value: Guarantees deterministic startup after power interruption - no boot-time reinitialization or parameter reload required.
Medical Device Event Logging	Avionics System State Capture
Use Scenario: Recording diagnostic timestamps, sensor fault events, and therapy delivery logs in portable infusion pumps and defibrillators. IC Role / Device Role / Timing Role: High-reliability data buffer capturing time-critical safety events with guaranteed persistence during battery depletion. Use Value: Meets IEC 62304 Class C software requirements for persistent event storage - no data loss even during rapid V_CC collapse.	Use Scenario: Capturing flight control surface positions, sensor health status, and fault flags prior to emergency power-down in unmanned aerial vehicles. IC Role / Device Role / Timing Role: Last-state snapshot memory preserving critical telemetry at the instant of power failure for post-flight analysis. Use Value: Provides deterministic, sub-70 ns capture window - ensures no state transition is missed during brownout sequences.

Real-Time Clock (RTC) Backup

Industrial PLC Configuration Storage

Use Scenario: Maintaining RTC registers and calendar data across AC mains failure or battery swap in metering and automation panels.

IC Role / Device Role / Timing Role: Nonvolatile SRAM providing zero-latency, byte-accessible storage for timekeeping registers and alarm settings.

Use Value: Eliminates need for separate RTC IC + EEPROM combo; retains accurate time for ≥10 years without refresh or checksum validation.

Use Scenario: Storing ladder logic parameters, calibration coefficients, and I/O mapping in programmable logic controllers deployed in factory environments.

IC Role / Device Role / Timing Role: Configuration memory holding user-defined operational constants that must survive unexpected shutdowns.

Use Value: Guarantees deterministic startup after power interruption - no boot-time reinitialization or parameter reload required.

Medical Device Event Logging

Avionics System State Capture

Use Scenario: Recording diagnostic timestamps, sensor fault events, and therapy delivery logs in portable infusion pumps and defibrillators.

IC Role / Device Role / Timing Role: High-reliability data buffer capturing time-critical safety events with guaranteed persistence during battery depletion.

Use Value: Meets IEC 62304 Class C software requirements for persistent event storage - no data loss even during rapid V_CC collapse.

Use Scenario: Capturing flight control surface positions, sensor health status, and fault flags prior to emergency power-down in unmanned aerial vehicles.

IC Role / Device Role / Timing Role: Last-state snapshot memory preserving critical telemetry at the instant of power failure for post-flight analysis.

Use Value: Provides deterministic, sub-70 ns capture window - ensures no state transition is missed during brownout sequences.

Equivalent & Alternatives

The following parts are listed as comparable options for similar nonvolatile SRAM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DS1230AB-70+	Narrower V_CC tolerance (±5%, 4.75–5.25V); higher write-protection threshold (4.50V min)	Better suited for regulated 5V systems where tighter supply control is available	Select DS1230AB-70+ when system V_CC variation is <±5% and higher noise immunity on power-fail detection is needed
STK12C68-AW50	Same 256k size but 50 ns access time; requires external battery and discrete control logic	Higher board area and BOM count due to external components; no integrated freshness seal	Choose STK12C68-AW50 only if faster access is mandatory and design can accommodate external battery management

Compared with DS1230AB-70+ and STK12C68-AW50, the DS1230Y-150 offers broader supply tolerance and integrated battery management at the cost of slightly slower access time - making it optimal for cost-sensitive, unregulated 5V industrial designs requiring minimal footprint and zero external components.

Availability

DS1230Y-150 is available at Aetrix Electronics and suitable for real-time clock backup, industrial PLC configuration storage, and medical device event logging requiring stable component supply and long-term lifecycle assurance.

Supply support for DS1230Y-150 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

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications applications.

The DS1230Y-150 belongs to Maxim's nonvolatile SRAM product line, designed specifically to eliminate external battery and supervisor circuitry in mission-critical data retention applications.

FAQ

What is the guaranteed data retention period for DS1230Y-150?

The DS1230Y-150 guarantees a minimum 10-year data retention period in the absence of external power, measured from the time V_CC is first applied above 4.25V. This retention is ensured by the integrated lithium energy source and internal power-switching architecture - no periodic refresh or external circuitry is required to maintain stored data over this duration. The DS1230Y-150 achieves this through process-controlled component selection and hermetic sealing of the battery cell.

Does DS1230Y-150 require external components to function as a nonvolatile memory?

No, the DS1230Y-150 requires no external components to operate as a nonvolatile memory. It integrates the SRAM array, lithium backup battery, and autonomous power-fail detection and switchover circuitry into a single 28-pin DIP package. The DS1230Y-150 performs automatic write protection and battery activation without any external supervisors, capacitors, or diodes - simplifying design and reducing BOM count compared to discrete SRAM + battery solutions.

What is the difference between DS1230Y-150 and DS1230AB-70+?

The DS1230Y-150 and DS1230AB-70+ share identical memory size, speed (70 ns), and package, but differ in supply voltage tolerance and write-protection threshold. The DS1230Y-150 supports ±10% V_CC (4.5V–5.5V) and triggers write protection at 4.25V, while the DS1230AB-70+ requires ±5% (4.75V–5.25V) and protects at 4.50V. This makes the DS1230Y-150 more suitable for unregulated 5V rails, whereas DS1230AB-70+ offers tighter noise margins in clean power environments.

Can DS1230Y-150 be used in surface-mount designs?

No, the DS1230Y-150 is supplied only in a 28-pin Extended DIP (EDIP) package intended for through-hole mounting and wave soldering. It is not rated for reflow soldering due to thermal sensitivity of the integrated lithium battery. For surface-mount applications, the DS1230YP-70+ PowerCap Module variant must be used - which separates the SRAM module from the snap-on DS9034PC+ PowerCap to withstand reflow temperatures.

How does the freshness seal on DS1230Y-150 preserve battery life?

The DS1230Y-150 ships with its lithium energy source electrically disconnected via an internal switch. This "freshness seal" prevents self-discharge during storage and shipping. Only upon first application of V_CC ≥4.25V does the internal circuitry close the connection - initiating the 10-year retention countdown from that moment. This ensures the DS1230Y-150 delivers full rated retention regardless of inventory dwell time, unlike pre-connected battery solutions that degrade during shelf storage.

DS1230Y-150 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: 28-DIP Module (0.600", 15.24mm)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: NVSRAM

Technology:: NVSRAM (Non-Volatile SRAM)

Memory Size:: 256Kbit

Memory Organization:: 32K x 8

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 150ns

Access Time:: 150 ns

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 28-EDIP

DS1230Y-150 FAQ

1.How can I place an order for DS1230Y-150 through Aetrix?

Please submit a Request for Quotation (RFQ) for DS1230Y-150 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 DS1230Y-150 reliable?

The price and inventory of DS1230Y-150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1230Y-150 is usually 5 days.

3.What payment methods are accepted for DS1230Y-150?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1230Y-150 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS1230Y-150?

DS1230Y-150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS1230Y-150 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 DS1230Y-150?

For technical support, including DS1230Y-150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1230Y-150 requirements.

6.How does Aetrix verify that DS1230Y-150 is sourced from the original manufacturer or authorized distributors?

All DS1230Y-150 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 DS1230Y-150 meets industry standards.

7.What is the process for return or replacement of DS1230Y-150?

All DS1230Y-150 units undergo pre-shipment inspection (PSI). If there is an issue with DS1230Y-150, 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 DS1230Y-150 part is unused and in its original packaging.

Return procedure for DS1230Y-150:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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