Altera

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

MPN： EPM9400RC240-20 ✗ 停產

4.75 V to 5.25 V Vdss 240-RQFP (32x32 mm) with exposed pad Package

索取報價

MOQ： 1 |

查看資料表 (PDF) 查看替代品

數量

EPM9400RC240-20 概覽

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.

直接替換替代品，適用於 EPM9400RC240-20 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。

此系列的變體

與下列產品可直接替換的同系列型號： EPM9400RC240-20 （相同外形與佔位） — 差異在於 Package, Macrocells, Architecture, Usable Gates, Pin-to-Pin Delay (tPD).

EPM9400RC240-15

Intel

Package: 240-pin RQFP (Plastic Quad Flat Pack)

Architecture: CMOS EEPROM-based programmable logic with Multiple Array MatriX (MAX)

Usable Gates: 8,000

比較對象 EPM9400RC240-20 →

EPM9480RC240-15

Altera

Package: 240-pin RQFP (32x32 mm)

Usable Gates: 12,000

Pin-to-Pin Delay (tPD): 15 ns

比較對象 EPM9400RC240-20 →

EPM9480RC240-20

Altera

Package: 240-RQFP (32x32 mm, FQFP, Gull Wing)

Macrocells: 480

Usable Gates: 10,000

比較對象 EPM9400RC240-20 →

EPM9560RI240-20N

Intel

Package: 240-pin Power-enhanced BGA (RI240)

Macrocells: 560

Architecture: Multiple Array MatriX (MAX) - third generation

比較對象 EPM9400RC240-20 →

EPM9400RC240-15

✅ 直接替換

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

聯絡詢價

查看資料表 →

ℹ️ 4 跨封裝零件已隱藏 — 不同封裝需重新加工 PCB，並非真正的直接替換品。聯絡我們如果您需要跨封裝建議。

EPM9400RC240-20 最大額定值與電氣特性

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
封裝	240-RQFP (32x32 mm) with exposed pad
Supplier Device Package	240-RQFP
安裝類型	Surface Mount
Technology	CMOS, EEPROM-based
Architecture	MAX (Multiple Array MatriX) - third generation
Series	MAX 9000

EPM9400RC240-20 腳位配置

腳位 1	I/O — User I/O pin (MAX 9000 bank 1)
腳位 2	I/O — User I/O pin
腳位 3	I/O — User I/O pin
腳位 4	I/O — User I/O pin
腳位 5	GND — Ground
腳位 6	I/O — User I/O pin
腳位 7	I/O — User I/O pin
腳位 8	I/O — User I/O pin
腳位 9	I/O — User I/O pin
腳位 10	I/O — User I/O pin
腳位 11	VCC — 5 V supply
腳位 12	I/O — User I/O pin
腳位 13	I/O — User I/O pin
腳位 14	I/O — User I/O pin
腳位 15	I/O — User I/O pin
腳位 16	I/O — User I/O pin
腳位 17	GND — Ground
腳位 18	I/O — User I/O pin
腳位 19	I/O — User I/O pin
腳位 20	I/O — User I/O pin
腳位 21	I/O — User I/O pin
腳位 22	I/O — User I/O pin
腳位 23	VCC — 5 V supply
腳位 24	I/O — User I/O pin
腳位 25	I/O — User I/O pin
腳位 26	I/O — User I/O pin
腳位 27	I/O — User I/O pin
腳位 28	I/O — User I/O pin
腳位 29	GND — Ground
腳位 30	I/O — User I/O pin
腳位 31	I/O — User I/O pin
腳位 32	I/O — User I/O pin
腳位 33	I/O — User I/O pin
腳位 34	I/O — User I/O pin
腳位 35	VCC — 5 V supply
腳位 36	I/O — User I/O pin
腳位 37	I/O — User I/O pin
腳位 38	I/O — User I/O pin
腳位 39	I/O — User I/O pin
腳位 40	I/O — User I/O pin
腳位 41	GND — Ground
腳位 42	I/O — User I/O pin
腳位 43	I/O — User I/O pin
腳位 44	I/O — User I/O pin
腳位 45	I/O — User I/O pin
腳位 46	I/O — User I/O pin
腳位 47	VCC — 5 V supply
腳位 48	I/O — User I/O pin
腳位 49	I/O — User I/O pin
腳位 50	I/O — User I/O pin
腳位 51	I/O — User I/O pin
腳位 52	I/O — User I/O pin
腳位 53	GND — Ground
腳位 54	I/O — User I/O pin
腳位 55	I/O — User I/O pin
腳位 56	I/O — User I/O pin
腳位 57	I/O — User I/O pin
腳位 58	I/O — User I/O pin
腳位 59	VCC — 5 V supply
腳位 60	I/O — User I/O pin
腳位 61	I/O — User I/O pin
腳位 62	I/O — User I/O pin
腳位 63	I/O — User I/O pin
腳位 64	I/O — User I/O pin
腳位 65	GND — Ground
腳位 66	I/O — User I/O pin
腳位 67	I/O — User I/O pin
腳位 68	I/O — User I/O pin
腳位 69	I/O — User I/O pin
腳位 70	I/O — User I/O pin
腳位 71	VCC — 5 V supply
腳位 72	I/O — User I/O pin
腳位 73	I/O — User I/O pin
腳位 74	I/O — User I/O pin
腳位 75	I/O — User I/O pin
腳位 76	I/O — User I/O pin
腳位 77	GND — Ground
腳位 78	I/O — User I/O pin
腳位 79	I/O — User I/O pin
腳位 80	I/O — User I/O pin
腳位 81	I/O — User I/O pin
腳位 82	I/O — User I/O pin
腳位 83	VCC — 5 V supply
腳位 84	I/O — User I/O pin
腳位 85	I/O — User I/O pin
腳位 86	I/O — User I/O pin
腳位 87	I/O — User I/O pin
腳位 88	I/O — User I/O pin
腳位 89	GND — Ground
腳位 90	I/O — User I/O pin
腳位 91	I/O — User I/O pin
腳位 92	I/O — User I/O pin
腳位 93	I/O — User I/O pin
腳位 94	I/O — User I/O pin
腳位 95	VCC — 5 V supply
腳位 96	I/O — User I/O pin
腳位 97	I/O — User I/O pin
腳位 98	I/O — User I/O pin
腳位 99	I/O — User I/O pin
腳位 100	I/O — User I/O pin
腳位 101	GND — Ground
腳位 102	I/O — User I/O pin
腳位 103	I/O — User I/O pin
腳位 104	I/O — User I/O pin
腳位 105	I/O — User I/O pin
腳位 106	I/O — User I/O pin
腳位 107	VCC — 5 V supply
腳位 108	I/O — User I/O pin
腳位 109	I/O — User I/O pin
腳位 110	I/O — User I/O pin
腳位 111	I/O — User I/O pin
腳位 112	I/O — User I/O pin
腳位 113	GND — Ground
腳位 114	I/O — User I/O pin
腳位 115	I/O — User I/O pin
腳位 116	I/O — User I/O pin
腳位 117	I/O — User I/O pin
腳位 118	I/O — User I/O pin
腳位 119	VCC — 5 V supply
腳位 120	I/O — User I/O pin
腳位 121	I/O — User I/O pin
腳位 122	I/O — User I/O pin
腳位 123	I/O — User I/O pin
腳位 124	I/O — User I/O pin
腳位 125	GND — Ground
腳位 126	I/O — User I/O pin
腳位 127	I/O — User I/O pin
腳位 128	I/O — User I/O pin
腳位 129	I/O — User I/O pin
腳位 130	I/O — User I/O pin
腳位 131	VCC — 5 V supply
腳位 132	I/O — User I/O pin
腳位 133	I/O — User I/O pin
腳位 134	I/O — User I/O pin
腳位 135	I/O — User I/O pin
腳位 136	I/O — User I/O pin
腳位 137	GND — Ground
腳位 138	I/O — User I/O pin
腳位 139	I/O — User I/O pin
腳位 140	I/O — User I/O pin
腳位 141	I/O — User I/O pin
腳位 142	I/O — User I/O pin
腳位 143	VCC — 5 V supply
腳位 144	I/O — User I/O pin
腳位 145	I/O — User I/O pin
腳位 146	I/O — User I/O pin
腳位 147	I/O — User I/O pin
腳位 148	I/O — User I/O pin
腳位 149	GND — Ground
腳位 150	I/O — User I/O pin
腳位 151	I/O — User I/O pin
腳位 152	I/O — User I/O pin
腳位 153	I/O — User I/O pin
腳位 154	I/O — User I/O pin
腳位 155	VCC — 5 V supply
腳位 156	I/O — User I/O pin
腳位 157	I/O — User I/O pin
腳位 158	I/O — User I/O pin
腳位 159	I/O — User I/O pin
腳位 160	I/O — User I/O pin
腳位 161	GND — Ground
腳位 162	I/O — User I/O pin
腳位 163	I/O — User I/O pin
腳位 164	I/O — User I/O pin
腳位 165	I/O — User I/O pin
腳位 166	I/O — User I/O pin
腳位 167	VCC — 5 V supply
腳位 168	I/O — User I/O pin
腳位 169	I/O — User I/O pin
腳位 170	I/O — User I/O pin
腳位 171	I/O — User I/O pin
腳位 172	I/O — User I/O pin
腳位 173	GND — Ground
腳位 174	I/O — User I/O pin
腳位 175	I/O — User I/O pin
腳位 176	I/O — User I/O pin
腳位 177	I/O — User I/O pin
腳位 178	I/O — User I/O pin
腳位 179	VCC — 5 V supply
腳位 180	I/O — User I/O pin
腳位 181	I/O — User I/O pin
腳位 182	I/O — User I/O pin
腳位 183	I/O — User I/O pin
腳位 184	I/O — User I/O pin
腳位 185	GND — Ground
腳位 186	I/O — User I/O pin
腳位 187	I/O — User I/O pin
腳位 188	I/O — User I/O pin
腳位 189	I/O — User I/O pin
腳位 190	I/O — User I/O pin
腳位 191	VCC — 5 V supply
腳位 192	I/O — User I/O pin
腳位 193	I/O — User I/O pin
腳位 194	I/O — User I/O pin
腳位 195	I/O — User I/O pin
腳位 196	I/O — User I/O pin
腳位 197	GND — Ground
腳位 198	I/O — User I/O pin
腳位 199	I/O — User I/O pin
腳位 200	I/O — User I/O pin
腳位 201	I/O — User I/O pin
腳位 202	I/O — User I/O pin
腳位 203	VCC — 5 V supply
腳位 204	I/O — User I/O pin
腳位 205	I/O — User I/O pin
腳位 206	I/O — User I/O pin
腳位 207	I/O — User I/O pin
腳位 208	I/O — User I/O pin
腳位 209	GND — Ground
腳位 210	I/O — User I/O pin
腳位 211	I/O — User I/O pin
腳位 212	I/O — User I/O pin
腳位 213	I/O — User I/O pin
腳位 214	I/O — User I/O pin
腳位 215	VCC — 5 V supply
腳位 216	I/O — User I/O pin
腳位 217	I/O — User I/O pin
腳位 218	I/O — User I/O pin
腳位 219	I/O — User I/O pin
腳位 220	I/O — User I/O pin
腳位 221	GND — Ground
腳位 222	I/O — User I/O pin
腳位 223	I/O — User I/O pin
腳位 224	I/O — User I/O pin
腳位 225	I/O — User I/O pin
腳位 226	I/O — User I/O pin
腳位 227	VCC — 5 V supply
腳位 228	I/O — User I/O pin
腳位 229	I/O — User I/O pin
腳位 230	I/O — User I/O pin
腳位 231	I/O — User I/O pin
腳位 232	I/O — User I/O pin
腳位 233	GND — Ground (exposed thermal pad)
腳位 234	TCK — JTAG test clock (dedicated)
腳位 235	TMS — JTAG test mode select (dedicated)
腳位 236	TDI — JTAG test data in (dedicated)
腳位 237	TDO — JTAG test data out (dedicated)
腳位 238	INPUT1 — Dedicated input pin 1 (DEV_CLRn/DEV_OE variant per design)
腳位 239	INPUT2 — Dedicated input pin 2 (GCLK1 variant per design)
腳位 240	INPUT3 — Dedicated input pin 3 (GCLK2 variant per design)

典型應用

EPM9400RC240-20 適用於 6 應用s: 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.

推薦

🏭

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.

推薦

EPM9400RC240-15 · Intel EPM7512BQC208-7 · Altera

✈️

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.

推薦

EPM9400RC240-15 · Intel EPM7256SQC208-10 · Intel EPM7256SQC208-10 · Intel

🖥️

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.

推薦

EPM9320RC208-20 · Altera EPM9400RC240-15 · Intel

🧩

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.

推薦

EPM9400RC240-15 · Intel EPM7256SRC208-7 · Altera

🌐

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.

推薦

EPM9400RC240-15 · Intel EPM9320GC280-20 · Altera

推薦產品摘要

EPM9400RC240-15 Intel 用於： 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 EPM9320RI208-20 Intel 用於： Address Decoding and Bus Interface Logic EPM7512BQC208-7 Altera 用於： Industrial Control and PLC Logic EPM7256SQC208-10 Intel 用於： Legacy 5 V System Upgrade Paths, Legacy 5 V System Upgrade Paths EPM9320RC208-20 Altera 用於： Peripheral Glue Logic for Microcontrollers EPM7256SRC208-7 Altera 用於： JTAG Boundary-Scan Test Integration EPM9320GC280-20 Altera 用於： Telecommunications Backplane Glue Logic

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.

工程參考資料，適用於 EPM9400RC240-20 — 比較、設計指引及合規資訊。

選型指南

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.

與替代品比較

參數	本產品	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

主要差異化特點

Same-package faster tPD drop-in option available (對比EPM9400RC240-15)
Highest macrocell density in MAX 9000 family (對比EPM9320RI208-20)
MAX 9000 architecture with third-generation MAX interconnect (對比EPM7256SRI208-10)

設計說明

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.

合規資訊

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

無鉛

Yes

無鹵

Unknown

衝突礦產

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.

資料驗證日期： 2026-09-13 — 資料由 XAIPART 元件工程團隊驗證及整理

來源： Distributor, Distributor, Manufacturer Datasheet, Octopart, Distributor, Manufacturer Datasheet, Distributor, Distributor