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

Analog Devices Inc./Maxim Integrated DS1230Y-200+

Name: DS1230Y-200+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1230Y-200+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS1230Y-200+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Memory

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

Datasheet:: DS1230Y-200+.pdf

Description:: IC NVSRAM 256KBIT PAR 28EDIP

Quantity:: RFQ Add To RFQ list

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Inventory:4,198

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Product details

Overview

DS1230Y-200+ 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 serves as a drop-in replacement for volatile SRAMs in real-time clock and configuration memory systems where power loss resilience is critical.

For engineers reviewing the DS1230Y-200+ datasheet, DS1230Y-200+ pinout, DS1230Y-200+ application, or DS1230Y-200+ equivalent, key selection factors include its self-contained battery switchover at ~3.0 V, automatic write protection during brownout, JEDEC-standard 28-pin DIP footprint, and compatibility with legacy 32k × 8 SRAM sockets.

Technical Context

The DS1230Y-200+ integrates SRAM, lithium battery, and voltage-monitoring control circuitry into a single monolithic module. Its power-fail detection triggers unconditional write protection and high-impedance outputs when V_CC drops below 4.25 V, and switches to battery power below ~3.0 V.

It operates in three distinct modes: normal read/write (V_CC ≥ 4.5 V), data retention (V_CC < 3.0 V), and transitional power-down/power-up (3.0 V ≤ V_CC < 4.5 V), with t_REC = 125 ms recovery to full functionality after V_CC restoration.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	262,144 bits (32,768 × 8), directly replaces standard 32k × 8 SRAM sockets
Access Time	70 ns - enables direct interface with 14 MHz microcontrollers without wait states
V_CC Range	4.5 V to 5.5 V (±10%) - supports wide-input industrial power rails
Data Retention	10 years without external power - guaranteed by factory-sealed lithium cell and low ICCS2 standby current (50–150 µA)
Write Protection Threshold	V_TP = 4.25–4.5 V - initiates automatic lockout before logic levels become unreliable
Operating Temp	0°C to +70°C (Commercial) - validated across full range with no derating
Package	28-pin 740-mil Extended DIP (EDIP) - JEDEC-standard footprint, wave/hand solderable

Pinout & Package

DS1230Y-200+ uses a JEDEC-standard 28-pin 740-mil Extended DIP (EDIP) package with integrated lithium battery and control circuitry. The package is wave- or hand-solderable only (not reflow-compatible).

Pin/Terminal	Circuit Role	Design Meaning
A0–A14	Address Inputs	15-bit address bus supporting full 32k-word addressing; TTL-compatible inputs
DQ0–DQ7	Data I/O	Bidirectional 8-bit data bus with 2.0 mA sink / -1.0 mA source drive capability
CE	Chip Enable	Active-low chip select; controls device enable and write-protection timing (t_PD = 1.5 µs)
WE	Write Enable	Active-low write strobe; determines write start/stop edges with CE per t_WP = 55 ns
OE	Output Enable	Active-low output control; enables tristate drivers independently of WE/CE state
V_CC	Power Supply	+5 V supply input; monitored continuously for brownout detection and battery switchover
GND	Ground	Reference return path for all signals and internal battery circuitry
NC	No Connect	Pins 1, 3, 4, and 33 are unconnected; must remain floating or grounded per layout guidelines

Key Features

Feature	Design Value
Self-contained lithium backup	Freshness seal ensures full battery capacity until first V_CC application >4.25 V; no external battery management required
Automatic power-fail response	Sub-µs detection (t_PD = 1.5 µs) and unconditional write protection prevent corruption during V_CC decay
Unlimited write cycles	No endurance limit - unlike EEPROM/Flash, supports continuous logging or buffer updates without wear-out
Standardized pinout compatibility	Matches both 28-pin 32k × 8 SRAMs and 28256 EEPROMs, enabling drop-in upgrades in existing designs
Low-power retention mode	ICCS2 = 50–150 µA at V_CC = V_CC−0.5 V - minimizes system standby power draw during battery backup

Applications

Real-Time Clock (RTC) Backup Memory	Industrial PLC Configuration Storage
Use Scenario: Maintaining calendar, alarm, and calibration data in battery-powered RTC modules during AC mains failure. IC Role / Device Role / Timing Role: Nonvolatile SRAM providing glitch-free, zero-wait-state memory for timekeeping registers and shadow RAM. Use Value: Eliminates need for external battery management ICs and EEPROM write-delay logic while guaranteeing 10-year data integrity.	Use Scenario: Storing ladder logic parameters, I/O mapping, and firmware update staging in programmable logic controllers. IC Role / Device Role / Timing Role: Configuration memory that survives unexpected power loss during runtime or firmware upload. Use Value: Enables immediate resumption of control sequences post-reboot with no initialization delay or data reload overhead.
Medical Device Settings Retention	Point-of-Sale Terminal Transaction Logs
Use Scenario: Preserving user-configured therapy parameters, alarm thresholds, and usage history in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for regulatory-compliant audit trails and device personalization. Use Value: Meets IEC 62304 data persistence requirements without external capacitors or supervisory circuits.	Use Scenario: Buffering transaction records and receipt data during intermittent network outages in retail terminals. IC Role / Device Role / Timing Role: High-speed, byte-addressable scratchpad for atomic log writes prior to secure flash commit. Use Value: Prevents transaction loss during brief power interruptions, satisfying PCI-DSS data integrity mandates.

Real-Time Clock (RTC) Backup Memory

Industrial PLC Configuration Storage

Use Scenario: Maintaining calendar, alarm, and calibration data in battery-powered RTC modules during AC mains failure.

IC Role / Device Role / Timing Role: Nonvolatile SRAM providing glitch-free, zero-wait-state memory for timekeeping registers and shadow RAM.

Use Value: Eliminates need for external battery management ICs and EEPROM write-delay logic while guaranteeing 10-year data integrity.

Use Scenario: Storing ladder logic parameters, I/O mapping, and firmware update staging in programmable logic controllers.

IC Role / Device Role / Timing Role: Configuration memory that survives unexpected power loss during runtime or firmware upload.

Use Value: Enables immediate resumption of control sequences post-reboot with no initialization delay or data reload overhead.

Medical Device Settings Retention

Point-of-Sale Terminal Transaction Logs

Use Scenario: Preserving user-configured therapy parameters, alarm thresholds, and usage history in portable diagnostic equipment.

IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for regulatory-compliant audit trails and device personalization.

Use Value: Meets IEC 62304 data persistence requirements without external capacitors or supervisory circuits.

Use Scenario: Buffering transaction records and receipt data during intermittent network outages in retail terminals.

IC Role / Device Role / Timing Role: High-speed, byte-addressable scratchpad for atomic log writes prior to secure flash commit.

Use Value: Prevents transaction loss during brief power interruptions, satisfying PCI-DSS data integrity mandates.

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%, 4.75–5.25 V); higher write-protection threshold (4.5–4.75 V)	Better suited for tightly regulated 5 V systems; less tolerant of noisy or aging power supplies	Select DS1230AB-70+ when V_CC stability exceeds ±5% and brownout margin must exceed 0.25 V
STK12C68-55I	Same 256k size and 28-pin DIP, but uses capacitor-based backup (no lithium); 55 ns access time	Limited retention (~72 hours typical); requires external supercapacitor charging circuitry	Choose STK12C68-55I only for short-duration backup needs where RoHS battery restrictions apply

Compared with DS1230AB-70+, DS1230Y-200+ offers wider supply tolerance and lower brownout threshold-critical for field-deployed equipment with variable input rails-while STK12C68-55I trades long-term reliability for capacitor-only backup and avoids lithium handling constraints.

Availability

DS1230Y-200+ is available at Aetrix Electronics and suitable for real-time clock backup, industrial PLC configuration storage, and medical device settings retention requiring stable component supply across commercial temperature grades.

Supply support for DS1230Y-200+ 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, computing, and communications systems.

The DS1230Y-200+ belongs to Maxim's nonvolatile SRAM product line, engineered to eliminate external battery management and provide seamless, socket-compatible memory backup for mission-critical embedded systems.

FAQ

What is the guaranteed data retention period for DS1230Y-200+?

The DS1230Y-200+ guarantees 10 years of data retention in the absence of external power, measured from the time V_CC is first applied above 4.25 V. This is ensured by factory-sealed lithium cell integration, low standby current (ICCS2 = 50–150 µA), and hermetic packaging - not extrapolated or estimated.

Does DS1230Y-200+ require external circuitry for battery management?

No, DS1230Y-200+ requires no external battery management. Its internal control circuitry automatically disconnects the lithium source until first power-up (>4.25 V), monitors V_CC continuously, and switches to battery backup below ~3.0 V - all without support components.

Is DS1230Y-200+ pin-compatible with standard 28-pin 32k × 8 SRAMs?

Yes, DS1230Y-200+ uses a JEDEC-standard 28-pin 740-mil Extended DIP footprint with identical pinout to conventional 32k × 8 SRAMs and 28256 EEPROMs, enabling direct socket replacement without PCB modification.

What is the write protection voltage threshold for DS1230Y-200+?

The DS1230Y-200+ asserts unconditional write protection when V_CC falls within 4.25 V to 4.5 V (V_TP), ensuring data integrity before logic levels degrade - a tighter threshold than DS1230AB variants, optimized for less-regulated power systems.

Can DS1230Y-200+ be used in surface-mount designs?

No, DS1230Y-200+ is a through-hole 28-pin EDIP package intended for wave or hand soldering only. For surface-mount applications, use the PCM variant DS1230YP-200+, which requires a separate DS9034PC+ PowerCap.

DS1230Y-200+ 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:: Active

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:: 200ns

Access Time:: 200 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-200+ FAQ

1.How can I place an order for DS1230Y-200+ through Aetrix?

Please submit a Request for Quotation (RFQ) for DS1230Y-200+ 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-200+ reliable?

The price and inventory of DS1230Y-200+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1230Y-200+ is usually 5 days.

3.What payment methods are accepted for DS1230Y-200+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1230Y-200+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS1230Y-200+?

DS1230Y-200+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS1230Y-200+ 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-200+?

For technical support, including DS1230Y-200+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1230Y-200+ requirements.

6.How does Aetrix verify that DS1230Y-200+ is sourced from the original manufacturer or authorized distributors?

All DS1230Y-200+ 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-200+ meets industry standards.

7.What is the process for return or replacement of DS1230Y-200+?

All DS1230Y-200+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1230Y-200+, 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-200+ part is unused and in its original packaging.

Return procedure for DS1230Y-200+:

1.Submit a request within 90 days.

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

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