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Product Detailed Parameters
- Description：IC FIFO SYNC 4KX18 40NS 28DIP
- Series：-
- Mfr：Cypress Semiconductor Corp
- Package：Bulk
- Memory Size：4K x 18
- Function：Synchronous
- Data Rate：20MHz
- Access Time：40ns
- Voltage - Supply：4.5 V ~ 5.5 V
- Current - Supply (Max)：115mA
- Bus Directional：Uni-Directional
- Expansion Type：Depth, Width
- Programmable Flags Support：Yes
- Retransmit Capability：Yes
- FWFT Support：No
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Through Hole
- Package / Case：28-DIP (0.600", 15.24mm)
- Supplier Device Package：28-PDIP
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Overview
The CY7C424-40PC is a synchronous FIFO memory device manufactured by Cypress Semiconductor Corp. It features a storage capacity of 4K x 18 bits, supporting unidirectional data transfer. The component operates at a maximum data rate of 20MHz with an access time of 40ns. It is housed in a 28-PDIP package and functions within a supply voltage range of 4.5 V to 5.5 V.
Feature Summary
- Synchronous operation for reliable data buffering
- Unidirectional bus direction configuration
- CMOS technology construction
Applications
- Data buffering in high-speed digital systems
- Interface bridging between asynchronous components
- Memory expansion in embedded controllers
Procurement Notes
Verify the exact datasheet version as Cypress products may have legacy documentation variations. Confirm package integrity for the 28-PDIP form factor. Check RoHS compliance status as older batches may not meet current environmental standards. Ensure supply chain authenticity through authorized distributors or verified secondary markets due to potential obsolescence.
Selection Notes
Select this part when a 4K x 18 synchronous FIFO is required with 40ns access speed. Compare against the CY7C424 series for alternative capacities like 1Kx9 or 2Kx18 if pin compatibility is needed. Consider the PDIP package constraints for PCB layout and thermal management requirements in the target application environment.
Part Context
This component belongs to the CY7C424 family of synchronous FIFOs from Cypress Semiconductor. The family offers various densities including 1K, 2K, and 4K word depths with different data widths. These devices are designed for high-performance data buffering applications requiring deterministic latency and simple interface protocols.
Replacement Considerations
Check for direct substitutes within the CY7C424 series such as CY7C424-45PC for slower timing requirements. Verify pinout compatibility before replacing with other manufacturers' FIFOs. Consult Infineon resources as they acquired Cypress's memory business.
