EP910PC-20 - Classic EPLD, 900 Gates, 20ns DIP-24 | Altera
MPN: EP910PC-20 ✗ اختتامِ زندگیEP910PC-20 جائزہ
A Classic EPLD (Erasable Programmable Logic Device) is a one-time-programmable (windowed EPROM-based) or UV-erasable CMOS PLD that replaces discrete SSI/MSI logic and small PAL/GAL arrays. EPLDs sit in the programmable logic hierarchy below CPLDs and FPGAs, offering non-volatile, deterministic logic with predictable timing. The Classic family specifically targets pin-to-pin speeds competitive with TTL and 74-series logic while consuming CMOS standby power.
Key features of the EP910PC-20 include 24 pins, 16 dedicated inputs and 8 dedicated outputs (configurable as I/O depending on family mode), 900 usable gates, 100% TTL compatibility, and a 20 ns worst-case tPD (suffix "-20" speed grade). The part is fabricated on advanced CMOS technology and provides pin-to-pin logic delays suitable for state-machine decoding, address decoding, and bus-interface glue logic. The EP910 family integrates 300 to 900 usable gates, replacing multiple PAL/GAL devices with a single package.
The EP910 architecture combines a sum-of-products AND/OR array with output macrocells featuring programmable polarity, registered or combinatorial outputs, and feedback paths. Programming is performed via a standard EPROM programmer using the JEDEC fuse-map format, and the device is non-volatile at power-up. The Classic family includes 100% TTL I/O compatibility and supports both 5V-only and mixed-voltage system designs.
Typical applications include address decoding for microprocessor systems, bus arbitration, state-machine controllers, peripheral interface glue logic, and replacement of multiple PAL/GAL devices with a single EPLD. The PDIP-24 footprint supports through-hole PCB assembly, breadboard prototyping, and legacy system maintenance where socketed logic must remain in place.
Designers should select the -20 speed grade when a 20 ns maximum tPD is sufficient for the target system clock or address-to-enable timing. Slower grades (-25, -30, -35) offer lower cost where timing margins permit. Faster -15 and -12 grades exist for tighter timing budgets.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
کے لیے ڈراپ اِن متبادل EP910PC-20 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں EP910PC-20 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Programming Method, Supply Voltage (VCC), Mounting Type, Usable Gates.
EP910PC-15
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EP910PC-12
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
EP910PC-0
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EP910IPC-25
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EP910IPC-15
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EP910PC-20 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Family | Altera Classic EPLD |
| Device | EP910 |
| Usable Gates | 900 |
| Pin-to-Pin Delay (tPD) | 20 ns |
| پیکیج | PDIP-24 (PC suffix) |
| پن کی تعداد | 24 |
| Supply Voltage (VCC) | 5 V |
| Technology | CMOS EPROM (UV-erasable) |
| I/O Compatibility | 100% TTL |
| آپریٹنگ درجہ حرارت | 0C to +70C (commercial) |
| Programming Method | EPROM programmer, JEDEC fuse map |
| ماؤنٹنگ ٹائپ | Through-Hole (DIP) |
EP910PC-20 پن کنفیگریشن
| پن 1 | I/O — Bidirectional I/O pin (programmable) |
| پن 2 | I/O — Bidirectional I/O pin (programmable) |
| پن 3 | I/O — Bidirectional I/O pin (programmable) |
| پن 4 | I/O — Bidirectional I/O pin (programmable) |
| پن 5 | I/O — Bidirectional I/O pin (programmable) |
| پن 6 | I/O — Bidirectional I/O pin (programmable) |
| پن 7 | I/O — Bidirectional I/O pin (programmable) |
| پن 8 | I/O — Bidirectional I/O pin (programmable) |
| پن 9 | I/O — Bidirectional I/O pin (programmable) |
| پن 10 | GND — Ground (0 V) |
| پن 11 | I/O — Bidirectional I/O pin (programmable) |
| پن 12 | I/O — Bidirectional I/O pin (programmable) |
| پن 13 | I/O — Bidirectional I/O pin (programmable) |
| پن 14 | I/O — Bidirectional I/O pin (programmable) |
| پن 15 | I/O — Bidirectional I/O pin (programmable) |
| پن 16 | I/O — Bidirectional I/O pin (programmable) |
| پن 17 | I/O — Bidirectional I/O pin (programmable) |
| پن 18 | I/O — Bidirectional I/O pin (programmable) |
| پن 19 | I/O — Bidirectional I/O pin (programmable) |
| پن 20 | VCC — +5 V supply voltage |
| پن 21 | I/O — Bidirectional I/O pin (programmable) |
| پن 22 | I/O — Bidirectional I/O pin (programmable) |
| پن 23 | I/O — Bidirectional I/O pin (programmable) |
| پن 24 | I/O — Bidirectional I/O pin (programmable) |
عام استعمالات
EP910PC-20 کے لیے موزوں ہے 6 ایپلیکیشنs: Microprocessor Address Decoding, Bus Arbitration Logic, State Machine Controllers, PAL/GAL Replacement, Peripheral Interface Glue Logic, Legacy System Maintenance.
Microprocessor Address Decoding
The EP910PC-20's 900 usable gates and 20 ns tPD make it suitable for microprocessor address decoding in legacy 8-bit and 16-bit systems such as 8086, 68k, and Z80 platforms. Its 24 pins provide ample I/O for decoding up to 24 address or control lines, replacing multiple 74LS138 decoder ICs. The TTL-compatible outputs drive bus buffers and chip-select lines directly without external pull-ups. JEDEC fuse-map programming simplifies integration with standard EPROM programmers.
تجویز کردہ
Bus Arbitration Logic
The EP910PC-20 integrates multi-master bus arbitration in 24-pin PDIP for systems such as ISA, VME, and Multibus. Its 100% TTL compatibility interfaces directly with bus transceivers and DMA controllers. With 20 ns tPD, the device propagates bus-request and bus-grant signals within budget for legacy bus clocks. The 900 gates replace discrete flip-flops and combinational glue logic in a single socketed package, simplifying board layout.
تجویز کردہ
State Machine Controllers
The EP910PC-20 implements complex state machines with up to 16 states in legacy control applications such as industrial controllers, test equipment, and peripherals. Its macrocell-based architecture with registered outputs and feedback simplifies FSM design. The 20 ns tPD supports state-transition rates up to 50 MHz in optimal conditions. Non-volatile EPROM-based configuration boots deterministically without external configuration memory.
تجویز کردہ
PAL/GAL Replacement
The EP910PC-20 consolidates 3 to 6 small PAL or GAL devices into a single 24-pin PDIP, reducing board area and improving reliability. Its 900 usable gates integrate AND/OR arrays with programmable polarity and registered outputs. JEDEC fuse-map compatibility supports existing design files without conversion. This application is common in cost-down redesigns of legacy systems where multiple PALCE16V8 or GAL20V8 devices occupied adjacent sockets.
تجویز کردہ
Peripheral Interface Glue Logic
The EP910PC-20 replaces discrete SSI/MSI glue logic in peripheral cards such as disk controllers, network adapters, and serial interfaces. Its 24 pins handle command decoding, interrupt steering, and control-signal conditioning. TTL-compatible outputs drive opto-isolators and line drivers directly. The 5V CMOS technology matches legacy peripheral rails; designers benefit from reduced component count versus discrete 74LS00/74LS04 implementations.
تجویز کردہ
Legacy System Maintenance
The EP910PC-20 supports field-replacement and maintenance of legacy systems where original parts are no longer manufactured. Its PDIP-24 through-hole package allows socketed substitution without PCB rework. The 20 ns speed grade matches original design timing across most legacy architectures including Multibus, VME, and STD bus systems. Long-term availability through distributors extends the operational life of industrial and aerospace systems built in the 1980s and 1990s.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا EP910PC-20 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | EP910PC-15 | EP910PC-12 | EP910PC-0 | EP910IPC-25 | EP910IPC-15 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | PDIP-24 | PDIP-24 - same | PDIP-24 - same | PDIP-24 - same | PDIP-24 - same | PDIP-24 - same |
| Usable Gates | 900 | 900 (same) | 900 (same) | 900 (same) | 900 (same) | 900 (same) |
| Operating Temperature | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Supply Voltage | 5 V | 5 V (same) | 5 V (same) | 5 V (same) | 5 V (same) | 5 V (same) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| I/O Compatibility | 100% TTL | 100% TTL (same) | 100% TTL (same) | 100% TTL (same) | 100% TTL (same) | 100% TTL (same) |
| Pin Count | 24 | 24 (same) | 24 (same) | 24 (same) | 24 (same) | 24 (same) |
اہم امتیازی خصوصیات
- Faster timing-grade alternatives exist in same package (بمقابلہEP910PC-15)
- Industrial temperature variants available in same package (بمقابلہEP910IPC-25)
- Surface-mount equivalent for SMT boards (بمقابلہEP910LC-35)
ڈیزائن نوٹس
The EP910PC-20 is obsolete and no longer factory-produced. Do not specify this part for new designs; instead, use MAX II EPM240T100C5N (TQFP-100) for active-lifecycle replacements, or same-family EP910PC-15 for direct drop-in maintenance of existing systems. Verify authenticity documentation when sourcing from secondary distributors, as obsolete parts attract counterfeit activity.
The EP910PC-20 operates from a single 5V supply. Decouple VCC (pin 20) with a 0.1uF ceramic capacitor placed within 5mm of the pin, plus a 10uF bulk capacitor near the supply entry point. The CMOS technology draws low standby current (typically tens of mA), but unused I/O pins should be configured as outputs to minimize supply current during operation.
For high-speed designs approaching the 20 ns tPD limit, place the EP910PC-20 socket close to the driven devices to minimize trace delay and ringing. The TTL-compatible outputs can drive 10 to 20 LSTTL loads, but long traces benefit from series damping resistors (22-33 ohm). Keep programming pins (if accessible) away from high-frequency signal paths to avoid noise coupling during in-circuit programming.
تعمیل کی معلومات
Compliance data not available in verified sources for this legacy part. EP910 family predates widespread RoHS adoption. Contact Intel FPGA (formerly Altera) for historical compliance documentation if required.
