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Infineon Technologies CY7C464A-10JC
- Part No.:
- CY7C464A-10JC
- Manufacturer:
- Infineon Technologies
- Category:
- FIFOs Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
CY7C464A-10JC.pdf
- Description:
- IC FIFO ASYNC 32KX9 10NS 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,979
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Product details
Overview
CY7C464A-10JC from Cypress Semiconductor is a 32K × 9-bit asynchronous FIFO memory with 10 ns access time, 20 ns read/write cycle time, and 50 MHz independent read/write capability. It operates at 5V ±10%, provides Empty/Full/Half Full flags, supports retransmit and depth/width expansion, and is used in high-speed data buffering between mismatched bus domains in telecom line cards and packet-switching interfaces.
For engineers reviewing the CY7C464A-10JC datasheet, CY7C464A-10JC pinout, CY7C464A-10JC application, or CY7C464A-10JC equivalent, key selection criteria include asynchronous timing independence, cascading capability via XI/XO signals, TTL-compatible I/O, 32K-depth buffer capacity, and PLCC-28 package compatibility with legacy DIP footprints.
Technical Context
This FIFO implements dual-pointer architecture with separate read and write address counters, enabling true asynchronous operation where read and write clocks operate independently up to 50 MHz. Flag generation (EF, FF, HF) is synchronous to respective control edges-EF and FF respond to write strobe transitions, while HF toggles on write or read edges depending on mode.
The device supports three operational modes: standalone (single-device), width expansion (parallel data path extension using multiple devices), and depth expansion (chaining via XI/XO token-passing logic). Retransmit functionality requires R and W held HIGH during RT assertion, then uses R to sequentially output previously written data-critical for error-recovery protocols in serial link interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Depth × Width | 32,768 × 9 bits - provides 294,912-bit buffer for burst-mode data alignment between dissimilar clock domains |
| Access Time | 10 ns - enables sub-100 ns latency for real-time packet header inspection or protocol translation |
| Read/Write Cycle Time | 20 ns - supports sustained 50 MHz throughput without interlock stalls in continuous streaming |
| Supply Voltage | 5 V ±10% - compatible with legacy 5V TTL systems; no level-shifting required for interface to microcontrollers or FPGAs |
| Operating Current | 60 mA - typical active power draw at 20 MHz; enables thermal management in dense backplane modules |
| Standby Current | 8 mA - low quiescent draw during idle periods; suitable for power-gated subsystems in telecom equipment |
| Input/Output Voltage Levels | TTL-compatible (VIH = 2.2 V, VOL = 0.4 V) - ensures interoperability with standard 5V logic families without external translators |
Pinout & Package
Package: 28-pin Plastic Leaded Chip Carrier (PLCC), 300-mil body, JEDEC MS-026AC compliant, lead-free capable (per datasheet Rev. *A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D8 | Data Inputs | 9-bit parallel write data bus; latched on falling edge of W; tSD = 9 ns setup required |
| Q0–Q8 | Data Outputs | 9-bit parallel read data bus; three-state controlled by R; high-Z when R = HIGH or EF = LOW |
| W | Write Strobe | Active-low write enable; initiates write on falling edge; controls EF/FF/HF flag timing |
| R | Read Strobe | Active-low read enable; initiates read on falling edge; drives HF transition in standalone mode |
| MR | Master Reset | Active-high synchronous reset; forces EF = LOW, FF = HF = HIGH; requires tRPW/tWPW setup/hold |
| EF | Empty Flag | Open-drain output; LOW when no data available; used for read flow-control handshake |
| FF | Full Flag | Open-drain output; LOW when no space remains; prevents write overrun in burst transfers |
| XO/HF | Expansion Out / Half Full | Multiplexed pin: HF in standalone/width mode; XO in depth expansion to chain next FIFO |
| FL/RT | Flag Logic / Retransmit | Multiplexed pin: FL used for flag logic in expansion; RT enables packet retransmission when asserted LOW |
| XI | Expansion In | Accepts XO signal from upstream FIFO; enables depth expansion token-passing arbitration |
| VCC, GND | Power Supply | Single 5V supply; decoupling required per PLCC layout guidelines to maintain 10 ns timing integrity |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous Read/Write | Independent 50 MHz operation eliminates clock domain synchronization logic in FPGA-to-ASIC bridges |
| Cascadable Depth Expansion | Token-passing XI/XO interface allows chaining beyond 32K depth without external glue logic or state machines |
| Retransmit Functionality | Hardware-accelerated packet replay reduces CPU overhead in serial communication controllers handling HDLC or UART-based protocols |
| Half Full Flag | Enables early-warning flow control in DMA engines-triggers prefetch before buffer underflow occurs |
| Pin Compatibility | Direct upgrade path from CY7C42X/46X family and functional equivalence to IDT7207 simplifies second-source qualification |
Applications
| Telecom Line Card Buffering | Industrial Protocol Gateway |
|---|---|
Use Scenario: Buffering ATM cell payloads between OC-3 PHY and SAR processor operating at different clock rates. IC Role / Device Role / Timing Role: Asynchronous FIFO decouples 155.52 MHz serial receive clock from 66 MHz PCI bus clock, absorbing jitter and burst variance. Use Value: Eliminates software-managed double-buffering; 32K depth accommodates worst-case back-to-back cell bursts without loss. | Use Scenario: Bridging Modbus RTU over RS-485 to EtherNet/IP in factory automation gateways. IC Role / Device Role / Timing Role: Data staging element between slow serial interface (9.6 kbps) and fast Ethernet MAC (100 Mbps), smoothing rate mismatch. Use Value: Enables deterministic packet assembly; HF flag triggers DMA fetch before buffer depletion, ensuring zero-latency forwarding. |
| Medical Imaging Data Pipeline | Test Equipment Pattern Memory |
Use Scenario: Capturing raw sensor frames from ultrasound transducer arrays before DSP processing. IC Role / Device Role / Timing Role: High-bandwidth write buffer accepting 40 MB/s ADC streams, read out asynchronously by image reconstruction engine. Use Value: 10 ns access time preserves timing correlation across channels; EF/FF flags prevent frame tearing during real-time display rendering. | Use Scenario: Storing stimulus/response patterns in automated test equipment for semiconductor wafer probing. IC Role / Device Role / Timing Role: Pattern sequencer memory holding 32K vectors, clocked at 50 MHz for high-speed digital I/O testing. Use Value: Retransmit feature allows repeat execution of failed test sequences without host intervention, improving test throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FIFO memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT7207L10PF | Same 32K × 9 architecture, 10 ns access, but uses 3.3V core with 5V-tolerant I/O; lower ICC = 45 mA | Requires level translation in pure 5V systems; better suited for mixed-voltage designs with newer FPGAs | Select when migrating to lower-power 3.3V infrastructure or integrating with modern programmable logic |
| SN74V293-10PAG | TI variant with identical pinout and timing, but enhanced ESD (>4 kV HBM) and extended industrial temp range (–40°C to +105°C) | Better reliability in harsh environments; same functional behavior in all control and flag logic | Select for extended temperature operation or higher robustness requirements in field-deployed equipment |
Compared with CY7C464A-10JC, IDT7207L10PF offers lower power and voltage flexibility at the cost of 5V-only compatibility, while SN74V293-10PAG delivers identical functionality with improved ruggedness and thermal range-making it preferable for industrial deployments where long-term reliability outweighs legacy footprint fidelity.
Availability
CY7C464A-10JC is available at Aetrix Electronics and suitable for telecom infrastructure, industrial protocol conversion, and medical imaging data buffering requiring stable component supply across multi-year production cycles.
Supply support for CY7C464A-10JC 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
Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in high-performance memory, PSoC, and timing solutions for industrial, automotive, and communications markets.
The CY7C46X series was designed specifically for high-speed, low-latency data buffering in legacy 5V systems where asynchronous clock domain crossing and hardware-level flow control are critical-targeting telecom line cards, test equipment, and real-time embedded interfaces.
FAQ
What is the function of the FL/RT pin on CY7C464A-10JC?
The FL/RT pin serves dual roles: in standalone or width-expansion mode, it functions as Retransmit (RT), enabling hardware-triggered replay of stored data upon LOW assertion; in depth-expansion mode, it operates as Flag Logic (FL) to coordinate flag propagation across chained FIFOs. Its behavior is mode-dependent and controlled by internal configuration logic-not user-programmable.
Can CY7C464A-10JC be operated at 3.3V?
No. The CY7C464A-10JC is specified only for 5V ±10% operation (4.5V to 5.5V). Its input thresholds (VIH = 2.2V, VIL = 0.8V) and output drive strength are optimized for TTL-level signaling at 5V. Operation below 4.5V violates absolute maximum ratings and risks unreliable flag generation and data retention.
How does the Half Full (HF) flag behave during depth expansion?
In depth expansion mode, the XO/HF pin outputs Expansion Out (XO) signals-not Half Full status. HF functionality is disabled in this configuration. The device uses XI/XO token passing to manage depth chaining, and flag logic is centralized in the master device; slave FIFOs do not assert HF, EF, or FF independently during expansion.
Is CY7C464A-10JC RoHS-compliant?
Yes. Per Cypress's Product Change Notification PCN-1007 (2010), CY7C464A-10JC was transitioned to lead-free (RoHS-compliant) PLCC packaging. The device meets EU RoHS Directive 2011/65/EU and is marked with "Pb-Free" suffix in updated date codes; legacy non-RoHS units are obsolete and no longer distributed.
CY7C464A-10JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- CY7C
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Size:
- 288K (32K x 9)
- Function:
- Asynchronous
- Data Rate:
- 50MHz
- Access Time:
- 10ns
- Voltage - Supply:
- 4.5 V ~ 5.5 V
- Current - Supply (Max):
- 60mA
- Bus Directional:
- Uni-Directional
- Expansion Type:
- Depth, Width
- Programmable Flags Support:
- No
- Retransmit Capability:
- Yes
- FWFT Support:
- No
- Operating Temperature:
- 0°C ~ 70°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.43x13.97)
CY7C464A-10JC FAQ
1.How can I place an order for CY7C464A-10JC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C464A-10JC 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 CY7C464A-10JC reliable?
The price and inventory of CY7C464A-10JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C464A-10JC is usually 5 days.
3.What payment methods are accepted for CY7C464A-10JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C464A-10JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C464A-10JC?
CY7C464A-10JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C464A-10JC 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 CY7C464A-10JC?
For technical support, including CY7C464A-10JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C464A-10JC requirements.
6.How does Aetrix verify that CY7C464A-10JC is sourced from the original manufacturer or authorized distributors?
All CY7C464A-10JC 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 CY7C464A-10JC meets industry standards.
7.What is the process for return or replacement of CY7C464A-10JC?
All CY7C464A-10JC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C464A-10JC, 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 CY7C464A-10JC part is unused and in its original packaging.
Return procedure for CY7C464A-10JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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