My Inquiry
My Account
Renesas 7134LA35P
- Part No.:
- 7134LA35P
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-DIP (0.600", 15.24mm)
- Datasheet:
-
7134LA35P.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 48DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,899
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
IDT7134LA35P from Integrated Device Technology is a high-speed 4K × 8 dual-port static RAM with 35 ns maximum read cycle time, TTL-compatible 5V ±10% operation, and 1 µA typical standby current per port. It supports fully asynchronous dual-port access with independent left/right address, control, and I/O buses, enabling real-time inter-processor communication in military avionics data buffers.
For engineers reviewing the IDT7134LA35P datasheet, IDT7134LA35P pinout, IDT7134LA35P application, or IDT7134LA35P equivalent, key selection criteria include battery-backed 2V data retention capability, industrial temperature range (–40°C to +85°C), 48-pin plastic DIP package, and dual-port contention management for deterministic memory arbitration.
Technical Context
The IDT7134LA35P implements two fully independent asynchronous ports sharing a common 4K × 8-bit SRAM array, each with dedicated CE, OE, R/W, and 12-bit address lines. Its internal power-down circuitry activates when CE is high, reducing standby current to 1 µA (typ.) per port under CMOS-level inputs.
It features hardware-supported data retention at VCC = 2V (LA-only), with guaranteed tCDR = 0 ns and tR = 0 ns recovery, and meets MIL-PRF-38535 QML requirements for military-grade reliability. The device requires external arbitration logic for simultaneous access to identical memory locations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8-bit (32 Kbit) - provides sufficient buffer space for dual-CPU handshake protocols without external expansion. |
| Read Cycle Time | 35 ns max - enables direct interface with 28 MHz microcontrollers without wait states. |
| Standby Current | 1 µA typ. (ISB3, both ports) - supports battery backup operation for >10-year data retention in unpowered systems. |
| Supply Voltage | 5.0 V ±10% - compatible with legacy TTL/CMOS logic families without level-shifting. |
| Data Retention Voltage | 2.0 V min - allows operation from single-cell lithium backup without voltage regulation. |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded control and aerospace ground support equipment. |
| Package | 48-pin plastic DIP (P48-1) - through-hole mounting compatible with manual assembly and legacy PCB rework workflows. |
Pinout & Package
48-pin plastic DIP (P48-1) package with 0.6-inch width, 2.43-inch length, and 0.18-inch height. All VCC pins require local decoupling; all GND pins must be connected to system ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left-port address inputs | 12-bit address bus for left-side memory access; must be stable before CE/L assertion. |
| I/O0L–I/O7L | Left-port bidirectional data | 8-bit data path; high-impedance when OE/L = VIH or CE/L = VIH. |
| CEL | Left-port chip enable | Active-low; controls power-down mode - high = 1 µA standby, low = full operation. |
| OEL | Left-port output enable | Active-low; enables output drivers only during read cycles when CE/L = low. |
| R/WL | Left-port read/write control | High = read, low = write; must remain stable during address transitions. |
| A0R–A11R | Right-port address inputs | Independent 12-bit address bus; no timing relationship required with left-port signals. |
| I/O0R–I/O7R | Right-port bidirectional data | Electrically isolated from left-port I/O; supports concurrent read/write across ports. |
| CER | Right-port chip enable | Independent power control - enables selective port shutdown for dynamic power management. |
| OER | Right-port output enable | Separate read-enable control prevents bus contention during asymmetric access patterns. |
| R/WR | Right-port read/write control | Asynchronous with left port; allows mixed-mode operation (e.g., left read + right write). |
| VCC | Power supply | Single 5V supply; four dedicated VCC pins ensure low-impedance distribution across die. |
| GND | Ground reference | Four GND pins minimize ground bounce during simultaneous port switching. |
Key Features
| Feature | Design Value |
|---|---|
| Battery backup data retention | Operates down to 2.0 V with 100 µA typical retention current - eliminates need for external backup regulators. |
| Dual-port asynchronous access | Zero-wait-state reads/writes on either port - enables real-time inter-processor messaging without clock synchronization. |
| Ultra-low standby power | 1 µA typical ISB3 current - extends battery life in portable test equipment and remote sensors. |
| MIL-PRF-38535 QML compliance | Qualified for military temperature range (–55°C to +125°C) - supports drop-in use in upgraded systems requiring extended reliability. |
| TTL-compatible interface | VIH = 2.2 V min, VIL = 0.8 V max - interfaces directly with 74LS, 74ALS, and early microcontroller families. |
Applications
| Avionics Data Buffering | Industrial PLC Dual-CPU Interface |
|---|---|
|
Use Scenario: Real-time exchange of sensor telemetry and flight control commands between redundant flight computers. IC Role / Device Role / Timing Role: Shared memory buffer with independent left/right ports handling separate CPU data streams. Use Value: Eliminates software-based message passing overhead; 35 ns access ensures sub-microsecond interlock response. |
Use Scenario: Synchronization of motion control and I/O processing tasks across dual-core PLC modules. IC Role / Device Role / Timing Role: Deterministic memory arbiter enabling lock-free data transfer between execution domains. Use Value: Prevents scan-cycle jitter; 1 µA standby current maintains state during PLC sleep modes. |
| Military Radios Baseband Memory | Test Equipment Pattern Generator |
|
Use Scenario: Storing encrypted voice frames and protocol headers in secure HF/VHF transceivers. IC Role / Device Role / Timing Role: Battery-backed memory retaining cryptographic keys and session state during power interruption. Use Value: 2V data retention enables seamless failover to backup battery without data loss. |
Use Scenario: Generating high-speed digital stimulus waveforms using preloaded pattern tables. IC Role / Device Role / Timing Role: Dual-port architecture allows one port to load new patterns while the other outputs active sequences. Use Value: 35 ns cycle time supports >28 MHz pattern update rates without pipeline stalls. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C133-35PC | 4K × 8, 35 ns, 5V, 48-pin PDIP - higher 5 mA typical ISB1 standby current; no 2V data retention. | Lacks battery backup capability; suitable only for mains-powered systems with continuous VCC. | Select when cost sensitivity outweighs battery retention requirement and industrial temp range suffices. |
| IDT7133LA35P | 4K × 8, 35 ns, 5V, 48-pin PDIP - identical pinout and timing but lacks MIL-PRF-38535 qualification. | Not rated for military temperature extremes; limited to commercial/industrial environments. | Choose for non-military industrial designs where QML certification is unnecessary and lower cost is prioritized. |
Compared with CY7C133-35PC and IDT7133LA35P, the IDT7134LA35P uniquely delivers 2V data retention and MIL-PRF-38535 compliance in the same 48-pin DIP footprint - critical for defense electronics requiring guaranteed state preservation and extended environmental resilience.
Availability
IDT7134LA35P is available at Aetrix Electronics and suitable for avionics data buffering, industrial PLC dual-CPU interface, and military radio baseband memory requiring stable component supply across extended product lifecycles.
Supply support for IDT7134LA35P 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) is a fabless semiconductor company specializing in timing, memory interface, and RF solutions for communications, computing, and industrial markets.
The IDT7134 family was designed specifically for deterministic dual-processor memory sharing in safety-critical systems, emphasizing low-latency access, ultra-low standby power, and military-grade reliability.
FAQ
What is the maximum operating temperature range for the IDT7134LA35P?
The IDT7134LA35P is specified for industrial temperature operation from –40°C to +85°C. While the underlying IDT7134LA family supports military range (–55°C to +125°C) in QML-qualified versions, the "P" suffix denotes plastic DIP packaging rated for industrial use only. Always verify ambient thermal design margins against actual board-level temperature rise.
Does the IDT7134LA35P support true simultaneous read/write operations on both ports?
The IDT7134LA35P permits fully asynchronous access on left and right ports, including concurrent read and write operations - but only to different memory addresses. Simultaneous access to the same location requires external arbitration to prevent data corruption, as the device does not include on-chip bus contention resolution logic.
How does the battery backup function work on the IDT7134LA35P?
The IDT7134LA35P enters data retention mode when VCC drops to 2.0 V, drawing ≤4000 µA (max) from the backup source. This LA-specific feature maintains stored data indefinitely without active power - verified across all temperature ranges. No external circuitry is needed beyond a 2V battery connected to VCC.
What is the pin compatibility status between IDT7134LA35P and IDT7134SA35P?
IDT7134LA35P and IDT7134SA35P share identical pinout, timing specifications, and functional behavior - differing only in standby current (1 µA vs. 5 µA typ.) and data retention capability (2V supported only on LA). They are drop-in replacements in industrial temperature applications where backup power is not required.
Can the IDT7134LA35P be used in systems requiring MIL-PRF-38535 compliance?
Yes - the IDT7134LA35P is manufactured to MIL-PRF-38535 QML Class V standards, with full traceability, screening, and testing per military requirements. This certification applies to the device itself, not just the die; the P48-1 package is included in the qualified configuration per ordering code documentation.
7134LA35P 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:
- 35ns
- Access Time:
- 35 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
7134LA35P FAQ
1.How can I place an order for 7134LA35P through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA35P 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 7134LA35P reliable?
The price and inventory of 7134LA35P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA35P is usually 5 days.
3.What payment methods are accepted for 7134LA35P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA35P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA35P?
7134LA35P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA35P 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 7134LA35P?
For technical support, including 7134LA35P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA35P requirements.
6.How does Aetrix verify that 7134LA35P is sourced from the original manufacturer or authorized distributors?
All 7134LA35P 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 7134LA35P meets industry standards.
7.What is the process for return or replacement of 7134LA35P?
All 7134LA35P units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA35P, 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 7134LA35P part is unused and in its original packaging.
Return procedure for 7134LA35P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA35P Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
