Infineon Technologies CY7C419-15JXC

Overview

CY7C419-15JXC from Cypress Semiconductor is a 256 × 9-bit asynchronous FIFO memory IC with dual-ported RAM architecture, 50 MHz max read/write throughput, TTL-compatible I/O, and integrated Empty/Full/Half-Empty flags-used in data buffering between mismatched clock domains in industrial serial interfaces and legacy bus bridging.

For engineers reviewing the CY7C419-15JXC datasheet, CY7C419-15JXC pinout, CY7C419-15JXC application, or CY7C419-15JXC equivalent, key selection criteria include access time (15 ns), standby current (10 mA), retransmit capability, width/depth expandability, and PLCC-32 package compatibility with IDT7200-series alternatives.

Technical Context

This FIFO implements independent asynchronous read and write ports with separate control signals (R, W, MR), enabling concurrent data ingestion and egress without shared clock constraints. Its dual-ported RAM cell structure supports simultaneous access while maintaining strict first-in-first-out ordering.

Flag logic generates EF (Empty), FF (Full), and HF (Half Full) outputs to prevent underrun/overrun conditions; HF serves as expansion-out (XO) signal in depth-expansion configurations. Retransmit (RT) enables deterministic replay of buffered data when both R and W are HIGH.

Key Specifications

Pinout & Package

Package: 32-pin Plastic Leaded Chip Carrier (PLCC), 11.43 mm × 11.43 mm, JEDEC MS-026AC compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar asynchronous FIFO applications.

Compared with IDT7200L15J and AM7200-15JC, CY7C419-15JXC uniquely delivers retransmit capability in an industrial-temperature-rated PLCC-32 package, making it optimal for ruggedized serial gateways where deterministic replay and thermal resilience are mandatory.

Availability

CY7C419-15JXC is available at Aetrix Electronics and suitable for industrial serial bridges, legacy bus arbiters, automated test fixtures, and waveform capture systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY7C419-15JXC 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 programmable solutions for embedded systems, connectivity, and memory.

CY7C4xx FIFOs were designed specifically for high-reliability data buffering in industrial automation, test equipment, and communications infrastructure where asynchronous clock domain crossing must be hardware-guaranteed.

FAQ

What is the maximum operating temperature range for CY7C419-15JXC?

CY7C419-15JXC is rated for industrial temperature operation from –40°C to +85°C, verified per its datasheet specification table and supported by thermal characterization in the "Operating Range" section. This exceeds commercial-grade alternatives and suits factory-floor and outdoor deployment scenarios.

Does CY7C419-15JXC support depth expansion with other CY7C4xx devices?

Yes-CY7C419-15JXC supports depth expansion using dedicated XO (Expansion Out), XIN (Expansion In), and XOUT (Expansion Out) pins. When cascaded, control signals propagate in parallel-not serially-preserving 50 MHz throughput across multiple devices without added propagation delay penalties.

How does the Half Full (HF) flag behave during retransmit operation?

During retransmit (RT = LOW), the HF flag remains functional and reflects actual buffer occupancy relative to 128-word threshold. Its behavior is unchanged from normal operation, as confirmed in Figure 9 and associated notes stating flags remain valid at tRTC despite pointer offset effects.

Is CY7C419-15JXC RoHS-compliant and lead-free?

Yes-CY7C419-15JXC is offered in Pb-free packages, explicitly stated in the "Features" section of the datasheet. It meets JEDEC JS-069 and RoHS Directive 2011/65/EU requirements, with no lead content in terminations or die attach materials.