Altera EPS448PC-16 MICROPROGRAM SEQUENCER PDIP28 - Detailed Product Specifications & Features
The Altera EPS448PC-16 is a high-performance Microprogram Sequencer designed for precision control in digital systems. Housed in a 28-pin PDIP (Plastic Dual Inline Package), this EPLD (Erasable Programmable Logic Device) operates within a 4.75V 5.25V voltage range, ensuring compatibility with standard TTL logic levels. Its 0 C to 70 C operating temperature range makes it suitable for both industrial and consumer applications. With through-hole mounting and a robust 28-PDIP package, the EPS448PC-16 offers reliable connectivity for prototyping and production environments. As an Active product from Altera, it guarantees long-term availability and support.
This sequencer excels in managing complex logic sequences, featuring programmable control for timing-critical operations. While exact macrocell or gate counts aren't specified, its EPLD architecture provides flexibility for custom logic implementations. The device's 16MHz speed (implied by '-16' suffix) ensures efficient real-time processing. Engineers appreciate its 5V operation, eliminating the need for voltage level shifters in legacy systems. The 7.62mm DIP spacing simplifies breadboarding, while Altera's proven design ensures low power consumption and high noise immunity.
Key technical specifications include 28 programmable I/O pins (typical for PDIP28), though the exact distribution between inputs, outputs, and bidirectional lines depends on configuration. Its non-volatile memory retains programming during power cycles, crucial for mission-critical systems. The EPS448PC-16 supports JTAG programming (common for Altera EPLDs), enabling in-circuit updates. While newer CPLDs may offer higher density, this device remains popular for its rugged through-hole design and deterministic timing essential for industrial control systems where reliability trumps miniaturization.
The EPS448PC-16 shines in embedded control applications requiring deterministic sequencing. Typical uses include microcontroller address sequencing, communication protocol state machines (UART, SPI), and industrial automation timing controllers. Its 5V tolerance makes it ideal for interfacing with legacy equipment, while the PDIP package simplifies repairs in field service scenarios. Unlike FPGAs, this EPLD delivers instant-on operation critical for automotive or power-grid systems. Designers leverage its glue logic consolidation capability to replace dozens of discrete ICs, reducing board space and improving reliability. For applications demanding radiation-hardened or extended-temperature variants, check Altera's military-grade offerings.
When compared to modern CPLDs, the EPS448PC-16 trades density for proven reliability in harsh environments. Its EPLD structure offers faster compile times than FPGAs for simple control tasks. The device pairs well with 8/16-bit microprocessors like 8051 or 68000 families, offloading timing-critical tasks. For new designs, consider power efficiency; while robust, this 5V device consumes more current than 3.3V alternatives. However, for retro-computing or industrial retrofit projects, the EPS448PC-16 remains unmatched in balancing programmability with analog-era durability. Always cross-reference with Altera's latest documentation for migration paths to MAX series CPLDs.
