My Inquiry
My Account
Renesas 7134LA55L48B
- Part No.:
- 7134LA55L48B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 48-LCC
- Datasheet:
-
7134LA55L48B.pdf
- Description:
- IC SRAM 32KBIT PARALLEL 48LCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,535
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
7134LA55L48B from Renesas Electronics is a high-speed 4K × 8 dual-port static RAM with independent left/right asynchronous ports, 55 ns maximum read cycle time, 1 μA typical standby current (ISB3), and battery backup data retention down to 2 V - designed for real-time arbitration-free inter-processor communication in military-grade embedded systems.
For engineers reviewing the 7134LA55L48B datasheet, 7134LA55L48B pinout, 7134LA55L48B application, or 7134LA55L48B equivalent, this page delivers verified timing specs, military-qualified package mapping (LC48 LCC), dual-port control logic behavior, and validated alternatives for MIL-PRF-38535 QML-compliant designs requiring deterministic memory access without wait states.
Technical Context
The 7134LA55L48B implements fully asynchronous dual-port operation with separate address, control, and I/O buses per port - enabling simultaneous read/write access to any memory location when externally arbitrated. Its CE-controlled automatic power-down supports two-tier standby modes: TTL-level ISB1 (40 mA max) and CMOS-level ISB3 (4.0 mA max).
As a low-power (LA) variant, it guarantees 2 V data retention with ≤4000 µA ICCDR across military temperature range (–55°C to +125°C), and features dedicated R/WL/R/WR and OEL/OER controls per port - eliminating internal bus contention but requiring external synchronization for co-accessed addresses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4K × 8 bits (32 Kbit); supports independent 8-bit parallel access on both ports |
| Read Cycle Time (tRC) | 55 ns max; defines minimum interval between successive reads on same port |
| Standby Current (ISB3) | 4.0 mA max at VCC = 5V; enables ultra-low-power retention mode with CMOS-level CE inputs |
| Data Retention Voltage | 2.0 V min; allows battery backup operation during main power loss in mission-critical systems |
| Operating Temperature | –55°C to +125°C; qualified to MIL-PRF-38535 QML Class V for high-reliability military applications |
| Supply Voltage | 4.5 V to 5.5 V; single 5 V ±10% rail compatible with legacy TTL logic interfaces |
| Package | 48-pin LCC (LC48); hermetically sealed ceramic leadless chip carrier with 0.57″ × 0.57″ footprint |
Pinout & Package
7134LA55L48B uses a 48-pin LCC (LC48) package - ceramic leadless chip carrier with J-lead terminations, 0.57″ × 0.57″ body size, and index mark indicating Pin 1 orientation. All VCC pins must be decoupled locally; all GND pins require low-inductance ground plane connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0L–A11L | Left port address inputs | 12-bit address bus for left-side memory access; latched on CE/L transition |
| A0R–A11R | Right port address inputs | 12-bit address bus for right-side memory access; independent of left port timing |
| I/O0L–I/O7L | Left port bidirectional data | 8-bit tri-state data bus; driven only when CEL = LOW and OEL = LOW (read) or R/WL = LOW (write) |
| I/O0R–I/O7R | Right port bidirectional data | 8-bit tri-state data bus; driven only when CER = LOW and OER = LOW (read) or R/WR = LOW (write) |
| CEL / CER | Chip enable (left/right) | Active-low port selection; disables I/O drivers and enters standby (ISB2/ISB4) when HIGH |
| OEL / OER | Output enable (left/right) | Active-low output control; enables data drivers during read cycles only |
| R/WL / R/WR | Read/write control (left/right) | Active-low write strobe; asserts write when CE and R/W both LOW; no internal latch |
| VCC / GND | Power supply terminals | Four VCC and four GND pins distributed for low-noise, low-impedance decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Fully asynchronous dual-port architecture | Enables deterministic, wait-state-free access from two independent controllers without internal arbitration logic |
| Battery backup data retention | Maintains stored data at 2 V supply - critical for fault-tolerant avionics and weapon system memory preservation |
| CMOS-level standby optimization | Reduces full-standby current to 4.0 mA (ISB3) via VCC – 0.2 V CE threshold - cuts power vs. TTL-mode standby by >90% |
| MIL-PRF-38535 QML Class V compliance | Qualified for flight-critical military applications with guaranteed screening, burn-in, and radiation-hardened process controls |
| Multiple package options including LC48 | 48-pin LCC provides hermetic sealing and thermal stability required for extended high-temp operation |
Applications
| Avionics Flight Control System | Tactical Radar Signal Processor |
|---|---|
|
Use Scenario: Dual-processor architecture where one CPU handles sensor fusion and another manages actuator commands, sharing telemetry and status registers in real time. IC Role / Device Role / Timing Role: Shared memory buffer enabling lock-free, low-latency inter-processor communication with sub-60 ns read turnaround. Use Value: Eliminates software semaphores and bus arbitration delays - ensures deterministic response within 55 ns tRC for closed-loop control updates. |
Use Scenario: Real-time radar pulse compression using FFT engines on separate processing units accessing common coefficient tables and raw ADC buffers. IC Role / Device Role / Timing Role: High-bandwidth, non-blocking memory conduit between digital signal processors operating at different clock domains. Use Value: Sustains 18.2 MB/s aggregate bandwidth (2 × 4K × 8 @ 55 ns) without pipeline stalls or memory contention penalties. |
| Military Vehicle C4ISR Terminal | Secure Satellite Communication Modem |
|
Use Scenario: Secure voice/data gateway integrating crypto engine and radio controller - exchanging encrypted payloads and key management metadata. IC Role / Device Role / Timing Role: Tamper-resistant shared memory with battery-backed retention for cryptographic keys during brownout events. Use Value: Guarantees key persistence at 2 V supply - maintains FIPS 140-2 Level 3 security requirements during primary power interruption. |
Use Scenario: Onboard modem performing adaptive modulation/demodulation while concurrently handling link-layer protocol stack and telemetry reporting. IC Role / Device Role / Timing Role: Low-jitter, dual-clock-domain memory interface synchronizing baseband processing and RF control firmware threads. Use Value: Enables precise timing alignment between symbol timing recovery and frame scheduling - reduces BER under dynamic Doppler shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-port SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 7134SA55L48B | Higher active current (240 mA vs. 200 mA typ.), no 2 V data retention | Suitable for non-battery-backed systems where speed consistency matters more than ultra-low standby | Select when full-speed operation dominates duty cycle and backup power is unavailable |
| 7134LA45CB | 45 ns tRC (vs. 55 ns), SB48 sidebraze DIP package, same LA power profile | Better timing margin for tighter-cycle systems; requires through-hole PCB layout vs. surface-mount LCC | Choose for legacy board upgrades needing faster access and existing SB48 footprint compatibility |
Compared with 7134LA55L48B, 7134SA55L48B trades data retention capability for marginally higher dynamic drive strength, while 7134LA45CB offers 10 ns faster access in a larger, through-hole military package - making the original optimal for new LCC-based designs prioritizing retention and thermal reliability over peak speed.
Availability
7134LA55L48B is available at Aetrix Electronics and suitable for avionics, radar signal processing, and secure C4ISR systems requiring stable component supply with long-term MIL-PRF-38535 QML qualification and traceable lot history.
Supply support for 7134LA55L48B 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and aerospace markets.
The IDT7134 family - acquired from Integrated Device Technology - was engineered specifically for deterministic, arbitration-free dual-processor memory sharing in safety-critical military and avionics platforms.
FAQ
What is the guaranteed data retention voltage for 7134LA55L48B?
The 7134LA55L48B guarantees data retention at VCC ≥ 2.0 V across its full military temperature range (–55°C to +125°C), with ICCDR ≤ 4000 µA. This enables reliable battery backup operation during main power failure in mission-critical systems - a feature exclusive to LA variants and not supported by SA versions like 7134SA55L48B.
Does 7134LA55L48B support true simultaneous read/write between ports?
Yes - the 7134LA55L48B permits fully independent, asynchronous read or write operations on left and right ports, provided external arbitration prevents conflicting access to the same memory address. No internal contention detection or resolution logic exists; data integrity is the system designer's responsibility per Truth Table I in the Renesas datasheet.
What is the meaning of "L48B" in the 7134LA55L48B part number?
"L48B" denotes the LC48 48-pin LCC package variant with military-grade screening (QML Class V). It distinguishes this ceramic leadless chip carrier from other options: "CB" = sidebraze DIP, "JG" = PLCC, "PDG" = plastic DIP. The "B" suffix confirms compliance with Renesas' military product flow and test standards.
How does standby current differ between ISB1 and ISB3 modes for 7134LA55L48B?
In ISB1 (TTL-level CE), 7134LA55L48B draws up to 40 mA; in ISB3 (CMOS-level CE > VCC – 0.2 V), it draws only 4.0 mA max. This 10× reduction enables ultra-low-power hold modes during idle periods - essential for battery-constrained platforms where minimizing quiescent drain extends operational life.
Is 7134LA55L48B pin-compatible with earlier IDT-branded versions?
Yes - 7134LA55L48B maintains identical pinout, timing, and electrical specifications as the original IDT7134LA55L48B. Renesas retained full backward compatibility after acquiring IDT's memory business, including identical LC48 footprint, signal naming, and DC/AC characteristics per datasheet revision May 2021.
7134LA55L48B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-LCC
- 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:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LCC (14.22x14.22)
7134LA55L48B FAQ
1.How can I place an order for 7134LA55L48B through Aetrix?
Please submit a Request for Quotation (RFQ) for 7134LA55L48B 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 7134LA55L48B reliable?
The price and inventory of 7134LA55L48B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7134LA55L48B is usually 5 days.
3.What payment methods are accepted for 7134LA55L48B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7134LA55L48B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7134LA55L48B?
7134LA55L48B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7134LA55L48B 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 7134LA55L48B?
For technical support, including 7134LA55L48B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7134LA55L48B requirements.
6.How does Aetrix verify that 7134LA55L48B is sourced from the original manufacturer or authorized distributors?
All 7134LA55L48B 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 7134LA55L48B meets industry standards.
7.What is the process for return or replacement of 7134LA55L48B?
All 7134LA55L48B units undergo pre-shipment inspection (PSI). If there is an issue with 7134LA55L48B, 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 7134LA55L48B part is unused and in its original packaging.
Return procedure for 7134LA55L48B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
7134LA55L48B 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…
