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Renesas IDT71016S15PHI8
- Part No.:
- IDT71016S15PHI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
IDT71016S15PHI8.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,562
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Product details
Overview
IDT71016S15PHI8 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 8-bit subsystem interfacing - used in industrial embedded controllers requiring deterministic memory access without refresh.
For engineers reviewing the IDT71016S15PHI8 datasheet, IDT71016S15PHI8 pinout, IDT71016S15PHI8 application, or IDT71016S15PHI8 equivalent, key selection criteria include 15 ns read cycle time, SOJ-44 package compatibility, industrial temperature range (–40°C to +85°C), and byte-selectable 16-bit data bus architecture.
Technical Context
The IDT71016S15PHI8 implements fully static asynchronous circuitry with no clocks or refresh required. Its address decoding supports 16-bit word, high-byte-only, low-byte-only, and high-impedance states via independent BHE, BLE, OE, and CS control logic.
Timing is governed by three distinct write-enable modes (WE-, CS-, or byte-enable-controlled), each with validated setup/hold and transition timing windows. Output drivers support 8 mA sink and 4 mA source capability under TTL voltage thresholds at VCC = 4.5 V minimum.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 16-bit (1,048,576 bits), enabling direct 16-bit microprocessor bus interface without external data multiplexing |
| Access Time (tAA) | 15 ns maximum - guarantees deterministic read latency for real-time control loops in industrial PLCs |
| Supply Voltage | 5.0 V ±10% - compatible with legacy 5 V logic families and eliminates need for level-shifting circuitry |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor drives and factory automation equipment |
| Package | 44-pin Plastic SOJ (SO44-1), JEDEC-standard footprint with 0.050″ lead pitch - supports wave soldering and long-term mechanical reliability |
| Standby Current (ISB1) | 10 µA maximum at CMOS-level chip deselect - enables ultra-low-power sleep mode in battery-backed systems |
| I/O Compatibility | TTL input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and output drive (VOH ≥ 2.4 V @ –4 mA, VOL ≤ 0.4 V @ 8 mA) - ensures direct connection to 74LS/ALS logic |
Pinout & Package
44-pin Plastic SOJ (SO44-1) package per JEDEC MS-025, 400-mil body width, gull-wing leads, 0.050″ pitch. Pin 1 marked by notch or dot; top-view orientation shown in datasheet Figure 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus accepting full 64K-word space; fully static - no minimum clock or pulse width requirement |
| CS | Chip Select | Active-low global enable; deassertion places all outputs in high-Z and reduces ICC to ISB1 (10 µA) |
| OE | Output Enable | Active-low read strobe; tOE = 8 ns max ensures fast data valid window after enable assertion |
| WE | Write Enable | Active-low write strobe; controls bidirectional I/O direction and write latching independent of CS or byte enables |
| BHE / BLE | Byte Enable Inputs | Independent high/low byte gating - enables 8-bit peripheral interfacing on shared 16-bit bus without glue logic |
| I/O0–I/O7 / I/O8–I/O15 | Bidirectional Data I/O | True bidirectional TTL-compatible ports; internally isolated during write cycles to prevent bus contention |
| VCC / VSS | Power / Ground | Single 5 V supply; decoupling required within 0.5 inch of pins 13 and 28 per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Equal access and cycle times | tRC = tAA = 15 ns - simplifies timing budgeting in synchronous bus designs with no distinction between read/write latency |
| Dual byte enable (BHE/BLE) | Enables selective 8-bit writes to upper or lower byte lanes - eliminates need for external byte-mask logic in x86 or Z80-based systems |
| Low standby current (ISB1) | 10 µA at CMOS-level CS disable - extends hold-up time in battery-backed SRAM applications such as RTC memory or configuration storage |
| TTL-compatible I/O | Direct interface to 74LS/ALS families without level shifters - reduces BOM count and PCB area in legacy industrial control boards |
| Fully static operation | No clocks, no refresh, no dynamic timing constraints - eliminates system-level timing jitter and simplifies power management |
Applications
| Industrial PLC Memory Buffer | Legacy Microprocessor System Cache |
|---|---|
Use Scenario: Real-time I/O scanning and ladder logic execution in programmable logic controllers operating in factory-floor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary working memory for CPU instruction and data storage, accessed directly over 16-bit parallel bus with deterministic 15 ns latency. Use Value: Industrial temperature rating (–40°C to +85°C) and 44-pin SOJ mechanical robustness ensure uninterrupted operation during thermal cycling and vibration exposure. |
Use Scenario: High-speed scratchpad memory for Z8000, 80286, or 68020-based development systems where external cache or buffer memory is required. IC Role / Device Role / Timing Role: Asynchronous SRAM acting as zero-wait-state memory extension, eliminating pipeline stalls during burst instruction fetches. Use Value: Equal tAA/tRC timing and TTL-compatible I/O allow plug-in replacement of older 2K×8 or 8K×8 SRAMs without redesigning address decode or bus termination. |
| Communications Protocol Stack Buffer | Test Equipment Data Capture Memory |
Use Scenario: Temporary frame buffering in serial protocol analyzers or fieldbus gateways handling Modbus RTU or Profibus DP messages. IC Role / Device Role / Timing Role: Dual-port-like behavior enabled by BHE/BLE for concurrent high/low byte updates during packet assembly/disassembly. Use Value: Byte-selectable write capability allows atomic 8-bit register updates without disturbing adjacent data - critical for protocol state machine integrity. |
Use Scenario: High-fidelity waveform capture buffer in digital storage oscilloscopes or logic analyzers requiring non-refreshed, glitch-free memory reads. IC Role / Device Role / Timing Role: Static acquisition memory holding sampled analog-to-digital data prior to host transfer, accessed via DMA bursts. Use Value: 15 ns access time enables sampling rates up to 66.7 MHz equivalent when interleaved across multiple banks - sufficient for 100 MS/s digitizers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62167EV30LL-45ZSXI | 3.3 V supply, 45 ns access, 512K × 16 organization, TSOP-II package | Requires level-shifting for 5 V systems; larger capacity but slower timing - suitable only for non-real-time buffering | Select only if migrating to 3.3 V architecture and latency tolerance >30 ns |
| AS6C1008-15PCN | 5 V supply, 15 ns access, 128K × 8 organization, SOJ-32 package | 8-bit data bus and smaller density - requires two devices for 16-bit width and increases board area | Use only when board layout restricts 44-pin SOJ footprint or 16-bit bus width is not required |
Compared with CY62167EV30LL-45ZSXI and AS6C1008-15PCN, the IDT71016S15PHI8 uniquely delivers 15 ns 16-bit parallel access in an industrial-rated 44-pin SOJ at 5 V - making it the sole option for legacy 5 V real-time systems needing single-chip 1 Mbit density and byte-selectable writes.
Availability
IDT71016S15PHI8 is available at Aetrix Electronics and suitable for industrial automation, legacy test equipment, and communications protocol gateway designs requiring stable component supply and long-lifecycle support.
Supply support for IDT71016S15PHI8 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) was a fabless semiconductor company specializing in timing, memory interface, and RF solutions before its acquisition by Renesas in 2019. It pioneered high-performance CMOS SRAM architectures for industrial and telecom infrastructure.
The IDT71016 product line was designed specifically for 5 V microprocessor systems needing deterministic, low-power, byte-controllable static memory - targeting industrial control, instrumentation, and embedded computing markets prior to the industry-wide shift to DDR and serial interfaces.
FAQ
What is the maximum operating frequency supported by the IDT71016S15PHI8?
The IDT71016S15PHI8 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 cycle rate is 66.7 MHz (1 / 15 ns). This represents the upper bound for consecutive read/write operations under worst-case conditions.
Does the IDT71016S15PHI8 require external refresh circuitry?
No, the IDT71016S15PHI8 requires no refresh circuitry. It uses fully static CMOS memory cells that retain data indefinitely as long as power is applied and CS remains asserted. This eliminates refresh overhead, timing uncertainty, and associated system design complexity found in DRAM-based solutions.
Can the IDT71016S15PHI8 be used in a 3.3 V system?
No, the IDT71016S15PHI8 is specified only for 5.0 V ±10% operation (4.5 V to 5.5 V). Its input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and output drive levels (VOH ≥ 2.4 V, VOL ≤ 0.4 V) are optimized for 5 V TTL compatibility. Using it with 3.3 V supplies risks unreliable operation and violates absolute maximum ratings.
What is the function of the BHE and BLE pins on the IDT71016S15PHI8?
BHE (High Byte Enable) and BLE (Low Byte Enable) are independent active-low inputs that gate access to the upper (I/O8–I/O15) and lower (I/O0–I/O7) byte lanes. When only one is asserted, the IDT71016S15PHI8 performs an 8-bit write or read - enabling seamless integration with 8-bit peripherals or partial-word updates without external logic.
Is the IDT71016S15PHI8 still recommended for new designs?
No - the IDT71016S15PHI8 was marked "Not recommended for new designs" in August 2000 and removed from that notice in February 2001. While actively manufactured at that time, it is now obsolete. Aetrix Electronics provides legacy supply support, but new designs should consider modern alternatives with extended lifecycle assurance and RoHS compliance.
IDT71016S15PHI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
IDT71016S15PHI8 FAQ
1.How can I place an order for IDT71016S15PHI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71016S15PHI8 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 IDT71016S15PHI8 reliable?
The price and inventory of IDT71016S15PHI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71016S15PHI8 is usually 5 days.
3.What payment methods are accepted for IDT71016S15PHI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71016S15PHI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71016S15PHI8?
IDT71016S15PHI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71016S15PHI8 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 IDT71016S15PHI8?
For technical support, including IDT71016S15PHI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71016S15PHI8 requirements.
6.How does Aetrix verify that IDT71016S15PHI8 is sourced from the original manufacturer or authorized distributors?
All IDT71016S15PHI8 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 IDT71016S15PHI8 meets industry standards.
7.What is the process for return or replacement of IDT71016S15PHI8?
All IDT71016S15PHI8 units undergo pre-shipment inspection (PSI). If there is an issue with IDT71016S15PHI8, 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 IDT71016S15PHI8 part is unused and in its original packaging.
Return procedure for IDT71016S15PHI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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