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Renesas IDT71016S15PHI
- Part No.:
- IDT71016S15PHI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71016S15PHI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,543
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Product details
Overview
IDT71016S15PHI from Integrated Device Technology is a 64K × 16-bit (1 Mbit) high-speed CMOS static RAM with 15 ns access time, 5 V single-supply operation, TTL-compatible I/O, and dual byte enable (BHE/BLE) for flexible 8-bit or 16-bit data bus interfacing - used in embedded controllers, industrial PLCs, and legacy communication protocol buffers.
For engineers reviewing the IDT71016S15PHI datasheet, IDT71016S15PHI pinout, IDT71016S15PHI application, or IDT71016S15PHI equivalent, key selection criteria include verified 15 ns read cycle time, SOJ-44 package compatibility, byte-selectable I/O control, and industrial temperature support (–40°C to +85°C).
Technical Context
The IDT71016S15PHI implements fully static asynchronous architecture with no clocks or refresh required. Its address decoding uses row/column architecture across a 64K × 16 memory array, supporting independent high-byte (I/O8–I/O15) and low-byte (I/O0–I/O7) access via dedicated BHE and BLE inputs.
Operation relies on three active-low control signals - CS, WE, and OE - with combinational logic enabling six distinct functional modes: word read/write, byte read/write, and output disable. All timing parameters are specified under VCC = 5.0 V ±10% and load conditions per JEDEC AC test standards (Figure 2, 30 pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 16-bit (1,048,576 bits), enabling direct 16-bit data path interfacing without external multiplexing |
| Access Time (tAA) | 15 ns max (industrial temp), guaranteeing deterministic latency for real-time buffer applications |
| Supply Voltage | 5.0 V ±10%, compatible with legacy 5 V TTL/CMOS system rails without level-shifting |
| I/O Interface | TTL-compatible bidirectional data lines (I/O0–I/O15), eliminating need for external bus transceivers |
| Byte Enable Control | Dedicated BHE and BLE pins allow independent 8-bit writes to upper/lower bytes - critical for mixed-endian or partial-word updates |
| Operating Temperature | –40°C to +85°C industrial range, validated for use in factory automation and outdoor telecom equipment |
| Package Type | 44-pin Plastic SOJ (SO44-1), JEDEC-standard footprint with 0.050″ lead pitch for wave-solder compatibility |
Pinout & Package
Package: 44-pin Plastic SOJ (SO44-1), 400-mil body width, gull-wing leads, JEDEC MO-029 compliant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus accepting full 64K linear addressing; no internal latching - requires stable address during CS low |
| CS | Chip Select | Primary device enable; all operations require CS ≤ VIL; high-Z outputs when CS ≥ VIH |
| WE | Write Enable | Active-low write strobe; initiates write cycles only when CS and BHE/BLE are also asserted |
| OE | Output Enable | Controls output drivers independently of CS/WE; enables read data without affecting write state |
| BHE / BLE | Byte Enable | Separate controls for upper (I/O8–I/O15) and lower (I/O0–I/O7) data bytes - supports 8-bit peripheral coexistence |
| I/O0–I/O15 | Bidirectional Data | True bidirectional TTL-compatible I/O; direction determined by WE and CS states - no external direction control needed |
| VCC / VSS | Power / Ground | Single 5 V supply with dedicated power/ground pairs per JEDEC SOJ layout to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Equal Access & Cycle Times | tRC = tAA = 15 ns ensures predictable timing margins in synchronous bus designs without wait-state insertion |
| Low Standby Current | ISB1 = 10 µA at CMOS-level chip deselect (CS ≥ VHC) enables ultra-low-power sleep modes in battery-backed systems |
| Output Enable Speed | tOE = 8 ns max allows fast read bursting with minimal bus turnaround delay between successive addresses |
| Byte-Selectable Writes | Independent BHE/BLE control eliminates need for read-modify-write sequences when updating partial words |
| No Clock or Refresh Required | Fully static design removes timing-critical clock distribution and refresh arbitration logic from host controller |
Applications
| Industrial PLC Data Buffers | Legacy Network Protocol Engines |
|---|---|
|
Use Scenario: Storing frame payloads and status registers in Modbus RTU or Profibus DP slave modules operating in harsh EMI environments. IC Role / Device Role / Timing Role: Asynchronous 16-bit SRAM buffer interfacing directly to microcontroller data bus with byte-granular write control. Use Value: BHE/BLE enables efficient handling of 8-bit protocol fields without full-word overwrites; 15 ns access sustains >33 MHz bus throughput. |
Use Scenario: Holding packet descriptors and temporary payload storage in early Ethernet MAC controllers (e.g., AMD LANCE-based designs). IC Role / Device Role / Timing Role: Non-refreshing, low-latency memory mapped into CPU I/O space for DMA-accessible frame buffers. Use Value: TTL-compatible I/O eliminates level translators; SOJ-44 package supports wave-solder reflow in multi-layer industrial PCBs. |
| Embedded Controller Boot Memory | Test Equipment Pattern Generators |
|
Use Scenario: Storing boot code and runtime variables in FPGA-based motion controllers where flash read latency is unacceptable. IC Role / Device Role / Timing Role: Static RAM mapped as primary execution memory with zero-wait-state access for deterministic real-time response. Use Value: 5 V operation matches legacy microcontroller voltage domains; industrial temp rating ensures reliability across thermal cycling. |
Use Scenario: Caching stimulus patterns and expected response vectors in automated test equipment (ATE) digital I/O subsystems. IC Role / Device Role / Timing Role: High-speed burst-access memory synchronized to pattern clock edges via external address sequencer. Use Value: 15 ns tAA guarantees sub-66.7 MHz pattern update rates; dual byte enables parallel loading of 8-bit channel groups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-45ZAXI | 512K × 16-bit, 45 ns access, 3.3 V core with 5 V tolerant I/O, TSOP-II package | Higher density but slower speed; requires voltage translation if host is 5 V-only | Select when migrating to lower power and higher capacity, and board supports mixed-voltage routing |
| AS6C1008-15PCN | 128K × 8-bit, 15 ns access, 5 V only, SOP-32 package | 8-bit bus width, smaller density, different pinout - not drop-in compatible | Choose for cost-sensitive 8-bit microcontroller designs where 64K × 16 is oversized and SOJ footprint is not required |
Compared with CY62167EV30LL-45ZAXI and AS6C1008-15PCN, the IDT71016S15PHI uniquely delivers 15 ns 16-bit access in a 5 V-native SOJ-44 package - making it the only option for legacy 5 V systems requiring pin-compatible replacement without redesign.
Availability
IDT71016S15PHI is available at Aetrix Electronics and suitable for industrial PLCs, legacy network interface cards, and embedded controller boot memory requiring stable component supply and long-term obsolescence management.
Supply support for IDT71016S15PHI 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
Integrated Device Technology (IDT), founded in 1980, pioneered high-performance memory and timing solutions for communications and computing infrastructure before its acquisition by Renesas in 2019.
The IDT71016 belongs to IDT's legacy high-speed CMOS SRAM product line, designed specifically for 5 V systems needing deterministic, no-refresh memory with byte-select capability in JEDEC-standard packages.
FAQ
What is the maximum operating frequency supported by the IDT71016S15PHI?
The IDT71016S15PHI does not operate on a clock signal - it is a fully static asynchronous SRAM. Its performance is defined by timing parameters, not frequency. With tRC = 15 ns, the maximum sustained random access rate is approximately 66.7 MHz (1 / 15 ns), assuming ideal bus conditions and no wait states. The IDT71016S15PHI achieves this using purely combinatorial address decoding and no internal clocks or refresh circuitry.
Does the IDT71016S15PHI support both commercial and industrial temperature ranges?
Yes, the IDT71016S15PHI is rated for industrial temperature operation from –40°C to +85°C, as confirmed in the "Ordering Information" and DC/AC Electrical Characteristics tables of the official datasheet. The 'I' suffix in the part number denotes industrial grade, and all timing specifications (e.g., tAA = 15 ns max) are guaranteed across this full range under VCC = 5.0 V ±10%.
Can the IDT71016S15PHI be used with a 3.3 V microcontroller?
No - the IDT71016S15PHI requires a 5.0 V ±10% supply (4.5 V to 5.5 V) and features TTL-compatible I/O thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V). Direct connection to a 3.3 V microcontroller risks violating input voltage limits and may cause unreliable reads/writes. A level-shifting interface or voltage translator is required for interoperability with 3.3 V logic systems.
What is the function of the BHE and BLE pins on the IDT71016S15PHI?
BHE (High Byte Enable) and BLE (Low Byte Enable) are independent active-low control inputs that gate access to the upper (I/O8–I/O15) and lower (I/O0–I/O7) data bytes. When only BHE is asserted, only the high byte is written or read; when only BLE is asserted, only the low byte is accessed. This enables true 8-bit partial-word operations without requiring read-modify-write cycles - a key feature for efficient protocol stack implementation in the IDT71016S15PHI.
Is the IDT71016S15PHI still recommended for new designs?
No - the original IDT datasheet (February 2001 revision) explicitly states "Not recommended for new designs" in earlier versions, though that note was removed in the final release. However, the IDT71016S15PHI remains actively supported for legacy system repair and continuity programs. Aetrix Electronics provides traceable, tested inventory and long-term supply assurance for the IDT71016S15PHI in industrial applications where redesign is impractical.
IDT71016S15PHI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 64K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
IDT71016S15PHI FAQ
1.How can I place an order for IDT71016S15PHI through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71016S15PHI 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 IDT71016S15PHI reliable?
The price and inventory of IDT71016S15PHI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71016S15PHI is usually 5 days.
3.What payment methods are accepted for IDT71016S15PHI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71016S15PHI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71016S15PHI?
IDT71016S15PHI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71016S15PHI 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 IDT71016S15PHI?
For technical support, including IDT71016S15PHI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71016S15PHI requirements.
6.How does Aetrix verify that IDT71016S15PHI is sourced from the original manufacturer or authorized distributors?
All IDT71016S15PHI 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 IDT71016S15PHI meets industry standards.
7.What is the process for return or replacement of IDT71016S15PHI?
All IDT71016S15PHI units undergo pre-shipment inspection (PSI). If there is an issue with IDT71016S15PHI, 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 IDT71016S15PHI part is unused and in its original packaging.
Return procedure for IDT71016S15PHI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71016S15PHI Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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