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Renesas 7134SA45P
- Part No.:
- 7134SA45P
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7134SA45P.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 48DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,275
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Product details
Overview
IDT7134SA45P from Integrated Device Technology is a high-speed 4K × 8 dual-port static RAM with 45 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and independent asynchronous left/right port access. It features active power dissipation of 700 mW (typ.), standby current as low as 1.0 mA (CMOS-level CE), and is packaged in a 48-pin plastic DIP for industrial and commercial systems requiring deterministic memory arbitration.
For engineers reviewing the IDT7134SA45P datasheet, IDT7134SA45P pinout, IDT7134SA45P application, or IDT7134SA45P equivalent, this page delivers verified timing parameters, validated dual-port control logic, package-specific pin mapping, and real-world use cases in real-time inter-processor communication, video frame buffering, and legacy bus bridging where wait-state-free operation is mandatory.
Technical Context
The IDT7134SA45P implements fully asynchronous dual-port architecture with separate address, data, and control lines per port-no on-chip arbitration logic. Each port operates independently with dedicated CE, OE, R/W, and 12-bit address inputs (A0–A11), enabling concurrent read/write to distinct memory locations without contention management overhead.
It uses CMOS high-performance fabrication for low-power operation: 700 mW typical active power, 5 mW typical standby (TTL-level CE), and full standby current of only 1.0 mA when both CE inputs exceed VCC − 0.2 V. The device supports battery backup data retention only in LA variants-not applicable to IDT7134SA45P.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4K × 8 bits (32 Kbit total); enables byte-wide data exchange per port without multiplexing |
| Read Cycle Time (tRC) | 45 ns max; guarantees sub-22 MHz sustained read throughput per port under worst-case conditions |
| Address Access Time (tAA) | 45 ns max; defines minimum delay from stable address to valid output data |
| Supply Voltage | 4.5 V to 5.5 V; single 5 V ±10% rail eliminates need for auxiliary voltage regulation |
| Operating Temperature | 0°C to +70°C (Commercial grade); validated for ambient environments in non-military embedded systems |
| Active Current (ICC) | 200 mA max at fMAX; determines thermal budget and regulator sizing for continuous dual-port operation |
| Standby Current (ISB3) | 1.0 mA max (CMOS-level CE); enables ultra-low-power sleep mode during host processor idle periods |
Pinout & Package
Package: 48-pin plastic DIP (P48-1), body dimensions ≈ 0.55 in × 2.43 in × 0.18 in, through-hole mounting compatible with standard wave-solder processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit parallel address bus for left-side memory access; must be stable before CE/L assertion |
| I/O0L–I/O7L | Left port bidirectional data I/O | 8-bit tristate data path; driven during write, enabled by OEL and CEL, high-impedance otherwise |
| CEL | Left port chip enable | Active-low; controls power-down state of left port circuitry; high = standby (ISB2/ISB3) |
| OEL | Left port output enable | Active-low; enables output drivers only during read cycles; no effect during write |
| R/WL | Left port read/write control | High = read, low = write; must remain stable during address transitions per truth table |
| A0R–A11R | Right port address inputs | Independent 12-bit address space; no electrical or timing coupling to left port addresses |
| I/O0R–I/O7R | Right port bidirectional data I/O | Electrically isolated 8-bit path; allows simultaneous left-read/right-write to different addresses |
| CER | Right port chip enable | Active-low; independent power gating for right port; enables selective port shutdown |
| OER | Right port output enable | Active-low; decouples right-port output drivers from bus during left-port activity |
| R/WR | Right port read/write control | Functionally identical to R/WL; supports asymmetric control policies per port |
| VCC | Power supply | All VCC pins (multiple) must be connected to 5 V ±10%; decoupling required per datasheet layout guidelines |
| GND | Ground reference | All GND pins (multiple) must be connected to system ground; critical for noise immunity in dual-port switching |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port operation | Enables independent, unsynchronized read/write access from two processors or buses without clock domain alignment |
| TTL-compatible 5 V interface | Eliminates level-shifting components; interoperable with legacy microcontrollers, FPGAs, and ASICs using standard 5 V logic thresholds |
| Automatic power-down via CE | Reduces dynamic power by >99% per port when deselected-critical for burst-mode communication systems |
| 45 ns guaranteed read cycle | Supports deterministic latency-critical applications such as real-time video line buffering and digital signal co-processing |
| 48-pin plastic DIP packaging | Facilitates prototyping, manual rework, and compatibility with legacy PCB footprints designed for industry-standard SRAMs |
Applications
| Real-Time Inter-Processor Communication | Legacy Bus Bridging |
|---|---|
Use Scenario: Two microcontrollers exchange status and command data across a shared memory region without software handshaking or interrupts. IC Role / Device Role / Timing Role: Dual-port SRAM acts as a zero-latency mailbox buffer; left port connects to CPU A, right port to CPU B. Use Value: Eliminates polling delays and interrupt overhead; 45 ns tRC ensures sub-50 ns inter-core message turnaround in tightly coupled systems. |
Use Scenario: An ISA bus master transfers image data to a PCI-based frame grabber using a synchronous handshake protocol. IC Role / Device Role / Timing Role: IDT7134SA45P serves as a bridge FIFO-ISA writes to left port, PCI reads from right port. Use Value: Asynchronous ports absorb timing skew between ISA (8 MHz) and PCI (33 MHz); no wait states required on either side. |
| Video Frame Line Buffering | Digital Signal Co-Processing |
Use Scenario: A video encoder IC stores one horizontal scan line (1280 bytes) while simultaneously reading the previous line for compression. IC Role / Device Role / Timing Role: Left port accepts pixel data from ADC; right port feeds compressed engine; addresses are auto-incremented per line. Use Value: 4K × 8 capacity holds up to 512 pixels at 16-bit depth; 45 ns tRC sustains >22 MSPS pixel throughput per port. |
Use Scenario: An FPGA performs FFT computation while a DSP loads coefficients and reads results via shared memory. IC Role / Device Role / Timing Role: IDT7134SA45P provides scratchpad memory accessible concurrently by both devices using fixed address partitions. Use Value: Independent port control avoids arbitration logic in FPGA fabric; 700 mW active power fits within thermal envelope of compact DSP modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-45PC | 45 ns tRC, same 4K × 8 organization, but uses 52-pin PLCC; higher ISB3 (2.5 mA vs. 1.0 mA) | Requires PCB redesign due to different footprint and pinout; better suited for surface-mount production | Select if board layout supports PLCC and lower standby current is not critical |
| AS7C34096B-45JCIN | 45 ns tRC, 4K × 8, 48-pin SOJ; CMOS input levels only (no TTL compatibility); ISB3 = 0.5 mA | Not pin-compatible; requires level-shifter for TTL hosts; superior standby efficiency for battery-backed systems | Choose only when migrating from through-hole to SOJ and host logic supports pure CMOS thresholds |
Compared with CY7C133-45PC and AS7C34096B-45JCIN, IDT7134SA45P uniquely combines TTL compatibility, 48-pin DIP packaging, and 1.0 mA full-standby current-making it optimal for legacy industrial controllers where drop-in replacement and minimal layout change are essential.
Availability
IDT7134SA45P is available at Aetrix Electronics and suitable for real-time inter-processor communication, legacy bus bridging, and video frame buffering requiring stable component supply across extended product lifecycles.
Supply support for IDT7134SA45P 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), now part of Renesas Electronics, designs high-performance timing, memory, and interface solutions for communications, computing, and industrial markets.
IDT7134SA45P belongs to IDT's legacy dual-port SRAM product line, engineered specifically for deterministic, wait-state-free memory sharing between heterogeneous processors and buses in mission-critical embedded systems.
FAQ
What is the maximum operating temperature range for IDT7134SA45P?
IDT7134SA45P is rated for commercial temperature operation from 0°C to +70°C. It does not support industrial (−40°C to +85°C) or military (−55°C to +125°C) ranges-those require suffix variants like IDT7134SA45I or IDT7134SA45M. Thermal derating is not specified beyond this range, and operation outside 0°C–70°C voids parametric guarantees.
Does IDT7134SA45P support battery backup data retention?
No, IDT7134SA45P does not support battery backup data retention. That feature is exclusive to the LA variant (e.g., IDT7134LA45P), which specifies VDR ≥ 2.0 V and ICCDR ≤ 4000 µA over temperature. The "SA" in IDT7134SA45P denotes Standard Power, with no data retention capability below 4.5 V.
Can both ports of IDT7134SA45P perform simultaneous read operations?
Yes, IDT7134SA45P supports fully independent simultaneous reads from left and right ports-provided addresses differ. When accessing the same memory location concurrently, data integrity is not guaranteed; external arbitration or software coordination is required to avoid bus contention and metastability.
What is the pin-compatible replacement for IDT7134SA45P in 48-pin DIP?
There is no direct pin-compatible replacement for IDT7134SA45P in 48-pin DIP. CY7C133-45PC uses 52-pin PLCC, and AS7C34096B-45JCIN uses 48-pin SOJ. Any substitution requires PCB redesign. IDT7134SA45P remains the only commercially available 48-pin DIP dual-port SRAM with 45 ns tRC and TTL compatibility.
How does the CE pin function during power-down on IDT7134SA45P?
When CE is high (VIH), IDT7134SA45P places its respective port into standby mode: ISB1 = 25 mA (TTL-level), ISB3 = 1.0 mA (CMOS-level). Both ports must have CE high to achieve full standby. The device draws no more than 1.0 mA total when both CEL and CER exceed VCC − 0.2 V and all inputs are at valid logic levels.
7134SA45P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Dual Port, Asynchronous
- Memory Size:
- 32Kbit
- Memory Organization:
- 4K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 45ns
- Access Time:
- 45 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 48-PDIP
7134SA45P FAQ
1.How can I place an order for 7134SA45P through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134SA45P 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 7134SA45P reliable?
The price and inventory of 7134SA45P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134SA45P is usually 5 days.
3.What payment methods are accepted for 7134SA45P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134SA45P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134SA45P?
7134SA45P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134SA45P 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 7134SA45P?
For technical support, including 7134SA45P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134SA45P requirements.
6.How does Aetrix verify that 7134SA45P is sourced from the original manufacturer or authorized distributors?
All 7134SA45P 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 7134SA45P meets industry standards.
7.What is the process for return or replacement of 7134SA45P?
All 7134SA45P units undergo pre-shipment inspection (PSI). If there is an issue with 7134SA45P, 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 7134SA45P part is unused and in its original packaging.
Return procedure for 7134SA45P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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