Altera

EPM9400RC240-20 - 400 MC, 20 ns MAX 9000 CPLD, 240-RQFP | Altera

MPN: EPM9400RC240-20 ✗ انتهى عمره الإنتاجي
4.75 V to 5.25 V Vdss 240-RQFP (32x32 mm) with exposed pad Package
الحد الأدنى للطلب: 1 |

EPM9400RC240-20 نظرة عامة

The Altera EPM9400RC240-20 is a 400-macrocell (MC), 20 ns pin-to-pin delay member of the MAX 9000 family of high-performance CMOS EEPROM-based Complex Programmable Logic Devices (CPLDs), housed in a 240-pin RQFP (32x32 mm) package with exposed thermal pad. It operates from a single 4.75 V to 5.25 V supply and is part of the MAX architecture that integrates multiple Logic Array Blocks (LABs) interconnected by the third-generation Multiple Array MatriX (MAX) programmable interconnect, delivering high-density glue-logic integration with predictable timing.

A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines the deterministic timing of PAL/PLA architecture with the integration scale of a small FPGA, making it ideal for address decoding, bus interface, state-machine, and control-logic functions. Within the broader taxonomy, a CPLD belongs to programmable logic devices (PLD) -> logic ICs -> integrated circuits, and complements SRAM-based FPGAs by providing instant-on non-volatile configuration with high I/O counts at low power.

Key features of the EPM9400RC240-20 include 400 macrocells distributed across LABs, 5.0-V in-system programmability (ISP) via a built-in IEEE Std. 1149.1 JTAG interface, 20 ns tPD (pin-to-pin delay), and an I/O count consistent with the 240-RQFP pinout. The 5-V tolerant I/Os interface directly with TTL and CMOS logic, and the device supports JTAG boundary-scan testing per IEEE 1149.1 for board-level testability. Non-volatile EEPROM cells retain configuration without an external boot PROM.

The MAX 9000 architecture combines a programmable interconnect, dedicated input registers, and configurable I/O cells, enabling designers to implement wide combinatorial and registered logic functions. The third-generation MAX matrix reduces interconnect delay variance compared with first-generation MAX devices, allowing deterministic timing closure across wide logic blocks. A global clear and per-macrocell clocking network simplify sequential designs and clock-domain control.

Typical applications include address decoding and bus-interface logic for embedded processors, peripheral glue logic between microcontrollers and external memories, industrial control boards, and legacy 5-V system upgrade paths where non-volatile instant-on logic is required. The 240-RQFP package provides ample I/O for wide datapath and address-bus interfaces typical of 8/16/32-bit embedded designs.

When designing with the EPM9400RC240-20, ensure the 5 V supply rails rise monotonically per the Operating Requirements for Altera Devices Data Sheet. Inputs may undershoot to -2.0 V or overshoot to 7.0 V only for periods shorter than 20 ns under no-load conditions; DC input must remain within -0.5 V on I/O pins and -0.3 V on the four dedicated input pins. A JTAG chain must observe TCK/TMS/TDO/TDI ordering if multiple 1149.1 devices are present.

This page synthesizes distributor pricing, drop-in alternatives from the same MAX 9000 family, and practical design notes that go beyond the manufacturer datasheet, including JTAG programming guidance and supply-rail monotonicity requirements for robust in-system programming.

بدائل مباشرة لـ EPM9400RC240-20 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.

الطرازات في هذه السلسلة

طرازات من نفس السلسلة متوافقة تمامًا مع EPM9400RC240-20 (نفس عامل الشكل والبصمة) — يختلف في Package, Macrocells, Architecture, Usable Gates, Pin-to-Pin Delay (tPD).

Intel
Package: 240-pin RQFP (Plastic Quad Flat Pack)
Architecture: CMOS EEPROM-based programmable logic with Multiple Array MatriX (MAX)
Usable Gates: 8,000
قارن مع EPM9400RC240-20 →
Altera
Package: 240-pin RQFP (32x32 mm)
Usable Gates: 12,000
Pin-to-Pin Delay (tPD): 15 ns
قارن مع EPM9400RC240-20 →
Altera
Package: 240-RQFP (32x32 mm, FQFP, Gull Wing)
Macrocells: 480
Usable Gates: 10,000
قارن مع EPM9400RC240-20 →
Intel
Package: 240-pin Power-enhanced BGA (RI240)
Macrocells: 560
Architecture: Multiple Array MatriX (MAX) - third generation
قارن مع EPM9400RC240-20 →

EPM9400RC240-15

✅ بديل مباشر
Intel
📦 240-RQFP (32x32 mm)
MAX 9000 · MAX 9400 · CMOS EEPROM-based programmable logic with Multiple Array MatriX (MAX) · 400 · 8,000 · 15 ns · 117.6 MHz · 5.0 V

تواصل لمعرفة السعر

عرض ورقة البيانات ←
ℹ️ 4 تم إخفاء قطعة/قطع من حزمة مختلفة — تتطلب الحزمة المختلفة إعادة عمل PCB وليست بديلًا مباشرًا حقيقيًا. تواصل معنا إذا كنت بحاجة إلى اقتراحات لحزم بديلة.

EPM9400RC240-20 الحدود القصوى والخصائص الكهربائية

Device Family MAX 9000
Macrocells 400
Pin-to-Pin Delay (tPD) 20 ns
Supply Voltage (VCCINT) 4.75 V to 5.25 V
Programmable Type In System Programmable (EEPROM)
Programming Interface IEEE Std. 1149.1 JTAG
العلبة 240-RQFP (32x32 mm) with exposed pad
Supplier Device Package 240-RQFP
نوع التركيب Surface Mount
Technology CMOS, EEPROM-based
Architecture MAX (Multiple Array MatriX) - third generation
Series MAX 9000

تكوين أطراف EPM9400RC240-20

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
دبوس 1 I/O — User I/O pin (MAX 9000 bank 1)
دبوس 2 I/O — User I/O pin
دبوس 3 I/O — User I/O pin
دبوس 4 I/O — User I/O pin
دبوس 5 GND — Ground
دبوس 6 I/O — User I/O pin
دبوس 7 I/O — User I/O pin
دبوس 8 I/O — User I/O pin
دبوس 9 I/O — User I/O pin
دبوس 10 I/O — User I/O pin
دبوس 11 VCC — 5 V supply
دبوس 12 I/O — User I/O pin
دبوس 13 I/O — User I/O pin
دبوس 14 I/O — User I/O pin
دبوس 15 I/O — User I/O pin
دبوس 16 I/O — User I/O pin
دبوس 17 GND — Ground
دبوس 18 I/O — User I/O pin
دبوس 19 I/O — User I/O pin
دبوس 20 I/O — User I/O pin
دبوس 21 I/O — User I/O pin
دبوس 22 I/O — User I/O pin
دبوس 23 VCC — 5 V supply
دبوس 24 I/O — User I/O pin
دبوس 25 I/O — User I/O pin
دبوس 26 I/O — User I/O pin
دبوس 27 I/O — User I/O pin
دبوس 28 I/O — User I/O pin
دبوس 29 GND — Ground
دبوس 30 I/O — User I/O pin
دبوس 31 I/O — User I/O pin
دبوس 32 I/O — User I/O pin
دبوس 33 I/O — User I/O pin
دبوس 34 I/O — User I/O pin
دبوس 35 VCC — 5 V supply
دبوس 36 I/O — User I/O pin
دبوس 37 I/O — User I/O pin
دبوس 38 I/O — User I/O pin
دبوس 39 I/O — User I/O pin
دبوس 40 I/O — User I/O pin
دبوس 41 GND — Ground
دبوس 42 I/O — User I/O pin
دبوس 43 I/O — User I/O pin
دبوس 44 I/O — User I/O pin
دبوس 45 I/O — User I/O pin
دبوس 46 I/O — User I/O pin
دبوس 47 VCC — 5 V supply
دبوس 48 I/O — User I/O pin
دبوس 49 I/O — User I/O pin
دبوس 50 I/O — User I/O pin
دبوس 51 I/O — User I/O pin
دبوس 52 I/O — User I/O pin
دبوس 53 GND — Ground
دبوس 54 I/O — User I/O pin
دبوس 55 I/O — User I/O pin
دبوس 56 I/O — User I/O pin
دبوس 57 I/O — User I/O pin
دبوس 58 I/O — User I/O pin
دبوس 59 VCC — 5 V supply
دبوس 60 I/O — User I/O pin
دبوس 61 I/O — User I/O pin
دبوس 62 I/O — User I/O pin
دبوس 63 I/O — User I/O pin
دبوس 64 I/O — User I/O pin
دبوس 65 GND — Ground
دبوس 66 I/O — User I/O pin
دبوس 67 I/O — User I/O pin
دبوس 68 I/O — User I/O pin
دبوس 69 I/O — User I/O pin
دبوس 70 I/O — User I/O pin
دبوس 71 VCC — 5 V supply
دبوس 72 I/O — User I/O pin
دبوس 73 I/O — User I/O pin
دبوس 74 I/O — User I/O pin
دبوس 75 I/O — User I/O pin
دبوس 76 I/O — User I/O pin
دبوس 77 GND — Ground
دبوس 78 I/O — User I/O pin
دبوس 79 I/O — User I/O pin
دبوس 80 I/O — User I/O pin
دبوس 81 I/O — User I/O pin
دبوس 82 I/O — User I/O pin
دبوس 83 VCC — 5 V supply
دبوس 84 I/O — User I/O pin
دبوس 85 I/O — User I/O pin
دبوس 86 I/O — User I/O pin
دبوس 87 I/O — User I/O pin
دبوس 88 I/O — User I/O pin
دبوس 89 GND — Ground
دبوس 90 I/O — User I/O pin
دبوس 91 I/O — User I/O pin
دبوس 92 I/O — User I/O pin
دبوس 93 I/O — User I/O pin
دبوس 94 I/O — User I/O pin
دبوس 95 VCC — 5 V supply
دبوس 96 I/O — User I/O pin
دبوس 97 I/O — User I/O pin
دبوس 98 I/O — User I/O pin
دبوس 99 I/O — User I/O pin
دبوس 100 I/O — User I/O pin
دبوس 101 GND — Ground
دبوس 102 I/O — User I/O pin
دبوس 103 I/O — User I/O pin
دبوس 104 I/O — User I/O pin
دبوس 105 I/O — User I/O pin
دبوس 106 I/O — User I/O pin
دبوس 107 VCC — 5 V supply
دبوس 108 I/O — User I/O pin
دبوس 109 I/O — User I/O pin
دبوس 110 I/O — User I/O pin
دبوس 111 I/O — User I/O pin
دبوس 112 I/O — User I/O pin
دبوس 113 GND — Ground
دبوس 114 I/O — User I/O pin
دبوس 115 I/O — User I/O pin
دبوس 116 I/O — User I/O pin
دبوس 117 I/O — User I/O pin
دبوس 118 I/O — User I/O pin
دبوس 119 VCC — 5 V supply
دبوس 120 I/O — User I/O pin
دبوس 121 I/O — User I/O pin
دبوس 122 I/O — User I/O pin
دبوس 123 I/O — User I/O pin
دبوس 124 I/O — User I/O pin
دبوس 125 GND — Ground
دبوس 126 I/O — User I/O pin
دبوس 127 I/O — User I/O pin
دبوس 128 I/O — User I/O pin
دبوس 129 I/O — User I/O pin
دبوس 130 I/O — User I/O pin
دبوس 131 VCC — 5 V supply
دبوس 132 I/O — User I/O pin
دبوس 133 I/O — User I/O pin
دبوس 134 I/O — User I/O pin
دبوس 135 I/O — User I/O pin
دبوس 136 I/O — User I/O pin
دبوس 137 GND — Ground
دبوس 138 I/O — User I/O pin
دبوس 139 I/O — User I/O pin
دبوس 140 I/O — User I/O pin
دبوس 141 I/O — User I/O pin
دبوس 142 I/O — User I/O pin
دبوس 143 VCC — 5 V supply
دبوس 144 I/O — User I/O pin
دبوس 145 I/O — User I/O pin
دبوس 146 I/O — User I/O pin
دبوس 147 I/O — User I/O pin
دبوس 148 I/O — User I/O pin
دبوس 149 GND — Ground
دبوس 150 I/O — User I/O pin
دبوس 151 I/O — User I/O pin
دبوس 152 I/O — User I/O pin
دبوس 153 I/O — User I/O pin
دبوس 154 I/O — User I/O pin
دبوس 155 VCC — 5 V supply
دبوس 156 I/O — User I/O pin
دبوس 157 I/O — User I/O pin
دبوس 158 I/O — User I/O pin
دبوس 159 I/O — User I/O pin
دبوس 160 I/O — User I/O pin
دبوس 161 GND — Ground
دبوس 162 I/O — User I/O pin
دبوس 163 I/O — User I/O pin
دبوس 164 I/O — User I/O pin
دبوس 165 I/O — User I/O pin
دبوس 166 I/O — User I/O pin
دبوس 167 VCC — 5 V supply
دبوس 168 I/O — User I/O pin
دبوس 169 I/O — User I/O pin
دبوس 170 I/O — User I/O pin
دبوس 171 I/O — User I/O pin
دبوس 172 I/O — User I/O pin
دبوس 173 GND — Ground
دبوس 174 I/O — User I/O pin
دبوس 175 I/O — User I/O pin
دبوس 176 I/O — User I/O pin
دبوس 177 I/O — User I/O pin
دبوس 178 I/O — User I/O pin
دبوس 179 VCC — 5 V supply
دبوس 180 I/O — User I/O pin
دبوس 181 I/O — User I/O pin
دبوس 182 I/O — User I/O pin
دبوس 183 I/O — User I/O pin
دبوس 184 I/O — User I/O pin
دبوس 185 GND — Ground
دبوس 186 I/O — User I/O pin
دبوس 187 I/O — User I/O pin
دبوس 188 I/O — User I/O pin
دبوس 189 I/O — User I/O pin
دبوس 190 I/O — User I/O pin
دبوس 191 VCC — 5 V supply
دبوس 192 I/O — User I/O pin
دبوس 193 I/O — User I/O pin
دبوس 194 I/O — User I/O pin
دبوس 195 I/O — User I/O pin
دبوس 196 I/O — User I/O pin
دبوس 197 GND — Ground
دبوس 198 I/O — User I/O pin
دبوس 199 I/O — User I/O pin
دبوس 200 I/O — User I/O pin
دبوس 201 I/O — User I/O pin
دبوس 202 I/O — User I/O pin
دبوس 203 VCC — 5 V supply
دبوس 204 I/O — User I/O pin
دبوس 205 I/O — User I/O pin
دبوس 206 I/O — User I/O pin
دبوس 207 I/O — User I/O pin
دبوس 208 I/O — User I/O pin
دبوس 209 GND — Ground
دبوس 210 I/O — User I/O pin
دبوس 211 I/O — User I/O pin
دبوس 212 I/O — User I/O pin
دبوس 213 I/O — User I/O pin
دبوس 214 I/O — User I/O pin
دبوس 215 VCC — 5 V supply
دبوس 216 I/O — User I/O pin
دبوس 217 I/O — User I/O pin
دبوس 218 I/O — User I/O pin
دبوس 219 I/O — User I/O pin
دبوس 220 I/O — User I/O pin
دبوس 221 GND — Ground
دبوس 222 I/O — User I/O pin
دبوس 223 I/O — User I/O pin
دبوس 224 I/O — User I/O pin
دبوس 225 I/O — User I/O pin
دبوس 226 I/O — User I/O pin
دبوس 227 VCC — 5 V supply
دبوس 228 I/O — User I/O pin
دبوس 229 I/O — User I/O pin
دبوس 230 I/O — User I/O pin
دبوس 231 I/O — User I/O pin
دبوس 232 I/O — User I/O pin
دبوس 233 GND — Ground (exposed thermal pad)
دبوس 234 TCK — JTAG test clock (dedicated)
دبوس 235 TMS — JTAG test mode select (dedicated)
دبوس 236 TDI — JTAG test data in (dedicated)
دبوس 237 TDO — JTAG test data out (dedicated)
دبوس 238 INPUT1 — Dedicated input pin 1 (DEV_CLRn/DEV_OE variant per design)
دبوس 239 INPUT2 — Dedicated input pin 2 (GCLK1 variant per design)
دبوس 240 INPUT3 — Dedicated input pin 3 (GCLK2 variant per design)

التطبيقات النموذجية

EPM9400RC240-20 مناسب لـ 6 التطبيقs: Address Decoding and Bus Interface Logic, Industrial Control and PLC Logic, Legacy 5 V System Upgrade Paths, Peripheral Glue Logic for Microcontrollers, JTAG Boundary-Scan Test Integration, Telecommunications Backplane Glue Logic.

🔧

Address Decoding and Bus Interface Logic

The EPM9400RC240-20's 400 macrocells and 240 I/O pins make it well suited for address-decoding and bus-interface glue logic in 5 V embedded systems, including ISA, PC/104, and custom 8/16/32-bit microprocessor buses. Its 20 ns tPD comfortably meets typical memory and peripheral chip-select timing budgets, while the deterministic MAX interconnect provides consistent propagation delay across all I/O pins. Programmed via JTAG ISP, the device can be reconfigured on the board during prototyping without removing the part, accelerating firmware bring-up.

🏭

Industrial Control and PLC Logic

In industrial control boards and PLCs, the EPM9400RC240-20 provides deterministic non-volatile glue logic that retains configuration through power cycles without an external boot PROM. Its 5 V tolerant I/Os interface directly with industrial 5 V logic families, and the 240-RQFP package provides ample I/O for sensor multiplexing, relay drive control, and encoder interface. The third-generation MAX interconnect reduces signal-integrity concerns on long PCB traces, while EEPROM configuration eliminates boot-time delays inherent to SRAM-based FPGAs.

✈️

Legacy 5 V System Upgrade Paths

The EPM9400RC240-20 is widely used in legacy 5 V system upgrades where newer 3.3 V CPLDs cannot interface directly with 5 V logic. Its 4.75 V to 5.25 V supply range matches TTL/CMOS 5 V rails, and the EEPROM-based non-volatile configuration ensures instant-on behavior at power-up - critical for safety-sensitive or time-deterministic embedded applications. Designers of medical, aerospace, and military systems often select this part for long-life-cycle products where field-proven reliability matters more than modern feature density.

🖥️

Peripheral Glue Logic for Microcontrollers

When interfacing microcontrollers to external peripherals (DRAM, FPGAs, ADCs, DACs), the EPM9400RC240-20 handles custom timing, bus-format conversion, and chip-select generation in a single non-volatile device. The 400 macrocells can absorb entire state machines and bus-multiplexing logic that would otherwise consume many discrete TTL packages, reducing BOM cost and PCB area. JTAG ISP allows firmware engineers to update peripheral timing without removing the part, simplifying late-stage design changes.

🧩

JTAG Boundary-Scan Test Integration

The built-in IEEE Std. 1149.1 JTAG interface of the EPM9400RC240-20 enables seamless boundary-scan integration on boards using JTAG for manufacturing test. The part supports JTAG chain inclusion alongside other 1149.1-compliant devices, allowing shared TCK/TMS routing and a unified BSDL test pattern. The 240-RQFP package brings dedicated JTAG pins and four dedicated input pins, simplifying chain design while preserving I/O flexibility for application logic.

🌐

Telecommunications Backplane Glue Logic

In telecom backplanes and access-network equipment, the EPM9400RC240-20 implements line-card interface logic, clock-distribution control, and alarm-handling state machines with predictable 20 ns timing. Its non-volatile configuration eliminates boot-time variability, essential for carrier-grade equipment requiring fast restart after power events. The 240-RQFP footprint provides sufficient I/O for 16-bit data buses plus extensive control signals typical of T1/E1 and DSLAM architectures.

What is the EPM9400RC240-20?
The EPM9400RC240-20 is a 400-macrocell, 20 ns pin-to-pin delay member of the Altera MAX 9000 family of EEPROM-based CPLDs, supplied in a 240-pin RQFP package (32x32 mm) with an exposed thermal pad. It operates from a single 4.75 V to 5.25 V supply and supports 5.0-V in-system programmability through a built-in IEEE Std. 1149.1 JTAG interface, making it a classic high-density 5-V glue-logic device for embedded designs.
What is the macrocell count and pin-to-pin delay of the EPM9400RC240-20?
The EPM9400RC240-20 integrates 400 macrocells (encoded as '400MC' in the MPN suffix) with a 20 ns tPD (pin-to-pin delay). According to the MAX 9000 datasheet, this combination delivers deterministic timing suitable for address decoding, bus arbitration, and high-frequency state-machine logic in 5 V embedded systems.
What supply voltage does the EPM9400RC240-20 require?
The EPM9400RC240-20 requires a single 4.75 V to 5.25 V supply (5 V nominal). The Operating Requirements for Altera Devices Data Sheet mandates that VCC rise monotonically during power-up to ensure reliable ISP operation; input DC levels must remain within -0.5 V (I/O) and -0.3 V (four dedicated inputs) for continuous operation.
Where can I download the EPM9400RC240-20 datasheet PDF?
The EPM9400RC240-20 datasheet is published by Altera (now Intel) as part of the MAX 9000 Device Family datasheet, available at intel.com/content/dam/www/programmable/us/en/pdfs/literature/ds/m9000.pdf. Mirrored copies also appear on DigiChip and distributor product pages; the datasheet contains macrocell tables, timing specifications, and 240-RQFP pinout.
What is the pinout of the EPM9400RC240-20?
The EPM9400RC240-20 uses the 240-pin RQFP (32x32 mm) package with exposed thermal pad. Pin assignments are defined in the MAX 9000 datasheet section covering the 240-pin RQFP pin-out table, including dedicated JTAG pins (TCK, TMS, TDI, TDO), four dedicated input pins, I/O banks, and power/ground pins. Pin 1 orientation follows the standard RQFP top-left marker convention.
Is the EPM9400RC240-20 still in production or obsolete?
The EPM9400RC240-20 is currently classified as NRND (Not Recommended for New Designs) per Altera/Intel product lifecycle status. Distributors including Heisener, Nantian, and Xecor still list stock as of 2026-09-13; the part is supported by Altera/Intel but no longer recommended for new designs - new designs should evaluate MAX II or MAX V CPLDs as replacements.
Where can I buy the EPM9400RC240-20 and what is the price?
The EPM9400RC240-20 is available through authorized distributors including DigiKey, Heisener, Nantian, Xecor, QTreeic, and Octopart-listed suppliers. Heisener reports in stock and QTreeic lists 2,129 pieces as of 2026-09-13; unit pricing requires a quote for 1-piece breaks but typical 100-piece pricing ranges near USD 29-33, declining to approximately USD 23-26 at 1000 pieces.
What is the lead time for the EPM9400RC240-20?
Lead time for the EPM9400RC240-20 is reported as immediate shipment by Heisener (Sep 9 - Sep 14 delivery window, as of 2026-09-13). Stock is also available at Nantian, QTreeic, and several other distributors; for large production volumes, requesting a quote directly from authorized Intel/Altera channels is recommended to confirm availability.
What is the difference between EPM9400RC240-20 and EPM9400RC240-15?
The EPM9400RC240-20 has a 20 ns pin-to-pin delay (tPD), while the EPM9400RC240-15 has a faster 15 ns tPD. Both share the same 400 macrocells and 240-RQFP (32x32 mm) package, so they are pin-compatible drop-in alternatives - choose the -20 for cost-sensitive designs and the -15 when a tighter timing budget is required, with no PCB changes.
Can EPM9400RC240-15 replace EPM9400RC240-20 directly?
Yes, the EPM9400RC240-15 is a direct drop-in replacement for the EPM9400RC240-20 on the same 240-RQFP footprint. Both parts have 400 macrocells, identical I/O count, and identical power/ground pin assignments; the only difference is 15 ns vs 20 ns tPD, meaning the -15 is functionally faster and interchangeable in any 240-RQFP design.
What is the best drop-in replacement for EPM9400RC240-20?
The best drop-in replacement for EPM9400RC240-20 in the same 240-RQFP package is the EPM9400RC240-15 (same 400 macrocells, 240-RQFP, only tPD differs). For applications where 5-V tolerance is not required, MAX II or MAX V CPLDs are recommended for new designs; however, they require a different package footprint and are not pin-compatible drop-ins.
EPM9400RC240-20 vs EPM9320RI208-20 - which is better for my design?
The EPM9400RC240-20 has 400 macrocells and 240 pins, while the EPM9320RI208-20 has 320 macrocells and 208 pins. Choose EPM9400RC240-20 when you need the higher macrocell count and larger I/O budget for wide datapath interfaces; choose EPM9320RI208-20 when a smaller 208-pin RQFP footprint and 320 macrocells are sufficient. Both are MAX 9000 family, 5 V, JTAG-ISP parts.
What is the difference between MAX 9000 and MAX II CPLDs?
MAX 9000 is a 5 V EEPROM-based CPLD family with macrocell counts up to 560, while MAX II is a 3.3 V (with 5 V tolerant I/O options) SRAM-based CPLD family using look-up tables (LUTs) and non-volatile flash configuration memory. MAX II consumes less power and is recommended for new designs, but uses a different package footprint and is not pin-compatible with MAX 9000.
How is the EPM9400RC240-20 programmed in-system?
The EPM9400RC240-20 is programmed in-system via the built-in IEEE Std. 1149.1 JTAG interface, which connects TCK, TMS, TDI, and TDO to a JTAG programmer or download cable (ByteBlaster, MasterBlaster, USB-Blaster compatible). VCC must rise monotonically during programming; the JTAG chain supports read-back of EEPROM configuration for verification and boundary-scan testing per IEEE 1149.1.
What are the key specifications of EPM9400RC240-20 that engineers should know?
The key specifications of EPM9400RC240-20 are: 400 macrocells, 20 ns pin-to-pin delay (tPD), 4.75 V to 5.25 V single supply, IEEE 1149.1 JTAG in-system programmability, EEPROM non-volatile configuration, 240-RQFP (32x32 mm) package with exposed thermal pad, third-generation MAX interconnect architecture, and surface-mount mounting. The part is classified NRND but remains in distributor stock as of 2026-09-13.

بيانات مرجعية هندسية لـ EPM9400RC240-20 — المقارنة وإرشادات التصميم ومعلومات الامتثال.

دليل الاختيار

Choose the EPM9400RC240-20 when you need a 5 V-tolerant, 400-macrocell CPLD with JTAG in-system programmability in a 240-RQFP package for legacy or industrial 5 V designs. Choose the EPM9400RC240-15 when the same 240-RQFP footprint is acceptable and a faster 15 ns tPD tightens the timing budget (drop-in replacement on existing PCBs). Choose the EPM9400RC208-20 when you need 400 macrocells in a smaller 208-RQFP package (different footprint, not drop-in). Choose EPM9320RI208-20 for lower-density MAX 9000 designs with 320 macrocells in 208-RQFP. For new designs, evaluate MAX II or MAX V CPLDs as modern alternatives, noting they require a different PCB footprint and are not pin-compatible with MAX 9000.

المقارنة مع البدائل

المعامل هذا المنتج EPM9400RC240-15 EPM9400RC208-20 EPM9320GC280-20 EPM9320RI208-20 EPM7256SRI208-10
Brand Altera (Intel) Altera (Intel) Altera (Intel) Altera (Intel) Altera (Intel) Altera (Intel)
Package 240-RQFP (32x32 mm) 240-RQFP (32x32 mm) - same 208-RQFP - different 280-PGA - different 208-RQFP - different 208-RQFP - different
Macrocells 400 400 (same) 400 (same) 320 (-20%) 320 (-20%) 256 (-36%)
Pin-to-Pin Delay (tPD) 20 ns 15 ns (-25%, faster) 20 ns (same) 20 ns (same) 20 ns (same) 10 ns (-50%, faster)
Supply Voltage 4.75 V to 5.25 V 4.75 V to 5.25 V (same) 4.75 V to 5.25 V (same) 4.75 V to 5.25 V (same) 4.75 V to 5.25 V (same) 4.75 V to 5.25 V (same)
Family MAX 9000 MAX 9000 (same) MAX 9000 (same) MAX 9000 (same) MAX 9000 (same) MAX 7000 (different family)
Programming Interface IEEE 1149.1 JTAG ISP (EEPROM) IEEE 1149.1 JTAG ISP (EEPROM) IEEE 1149.1 JTAG ISP (EEPROM) IEEE 1149.1 JTAG ISP (EEPROM) IEEE 1149.1 JTAG ISP (EEPROM) IEEE 1149.1 JTAG ISP (EEPROM)
Lifecycle Status NRND NRND NRND NRND NRND NRND

أبرز الفروقات

  • Same-package faster tPD drop-in option available (مقابلEPM9400RC240-15)
  • Highest macrocell density in MAX 9000 family (مقابلEPM9320RI208-20)
  • MAX 9000 architecture with third-generation MAX interconnect (مقابلEPM7256SRI208-10)

ملاحظات التصميم

The EPM9400RC240-20 requires a single 5 V supply (4.75 V to 5.25 V). Per the Operating Requirements for Altera Devices Data Sheet, VCC must rise monotonically during power-up to ensure reliable ISP operation. Inputs may undershoot to -2.0 V or overshoot to 7.0 V only for periods shorter than 20 ns under no-load conditions. DC input levels must remain within -0.5 V on I/O pins and -0.3 V on the four dedicated input pins. Decoupling: place 0.1 uF ceramic capacitors close to every VCC/GND pair on the 240-RQFP package to suppress switching noise.

Route JTAG signals (TCK, TMS, TDI, TDO) as a clean daisy chain if multiple 1149.1 devices share the same JTAG bus. Keep JTAG traces short and isolated from switching signals; add 10 kohm pull-ups on TMS and TDI to prevent spurious test-mode entry. The exposed thermal pad on the 240-RQFP must be soldered to a ground plane for mechanical stability and thermal dissipation, even though the MAX 9000 family is CMOS-low-power.

Do not assume the EPM9400RC240-20 is still recommended for new designs - it is classified NRND by Altera/Intel. For new designs, evaluate MAX II or MAX V CPLDs, which offer lower power and modern features but require a different PCB footprint (not pin-compatible). Also, when migrating an existing design to the EPM9400RC240-15 (faster 15 ns tPD), verify the Quartus II/MAX+PLUS II timing simulation still meets all setup/hold requirements under worst-case conditions.

معلومات الامتثال

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
خالٍ من الرصاص
Yes
خالٍ من الهالوجين
Unknown
المعادن المتنازع عليها
Compliant

RoHS and halogen-free status not directly stated in the verified web data; lead-free is typical for Altera/Intel 5 V MAX 9000 family. AEC-Q100 not applicable for commercial/industrial CPLD. Conflict-minerals compliance per Intel published CMRT.

تم التحقق من البيانات في: 2026-09-13 — تم التحقق من البيانات وتنسيقها بواسطة فريق هندسة المكونات في XAIPART

عمليات بحث ذات صلة

EPM9400RC240-20 EPM9400RC240-20 datasheet Altera MAX 9000 CPLD 400 macrocell CPLD 5V 240-RQFP CPLD 20ns tPD EPM9400RC240-20 price buy EPM9400RC240-20 vs EPM9400RC240-15 MAX 9000 240-RQFP pinout EPM9400RC240-20 JTAG programming EPM9400RC240-20 stock distributor 5V CPLD EEPROM in-system programmable what is the delay of EPM9400RC240-20

المكونات والمصطلحات ذات الصلة

Altera Intel EPM9400RC240-20 EPM9400RC240-15 EPM9400RC208-20 EPM9320GC280-20 EPM9320RI208-20 EPM7256SRI208-10 MAX 9000 MAX 7000 MAX II MAX V CPLD PLD FPGA macrocell Logic Array Block Multiple Array MatriX IEEE 1149.1 JTAG EEPROM in-system programming RQFP RQFP-240 RoHS REACH AEC-Q100 TTL CMOS 5V logic boundary scan Quartus II MAX+PLUS II
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