Lattice Semiconductor Corporation LC4384B-75TN176C

Mfr. Part

LC4384B-75TN176C

Manufacturer

Lattice Semiconductor

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Detailed Description

High-speed, in-system programmable CPLD from the Lattice ispMACH 4000B series

384 macrocells organized into 24 logic blocks for scalable, deterministic logic

128 user I/Os for rich interfacing and glue logic

Max internal propagation delay tpd 7.5 ns for fast control paths

Core supply 2.3 V to 2.7 V (typical 2.5 V), commercial junction temperature 0°C to 90°C

176-lead TQFP (24 mm x 24 mm) surface-mount package, shipped in trays

Base product number LC4384

Key Features

In-System Programmable via standard JTAG (IEEE 1149.1)

384 macrocells, 24 logic blocks for structured design

128 user I/O pins with programmable behavior (slew rate, drive strength; see datasheet)

Fast timing (tpd max 7.5 ns) for tight control loops and deterministic response

Non-volatile configuration memory for instant-on behavior

Multiple global clocks, asynchronous set/reset resources

Low-power 2.5 V core operation; flexible I/O bank voltage options (commonly 3.3 V or 2.5 V; verify per bank in datasheet)

Surface-mount TQFP package, industry-standard footprint

Supported by Lattice design tools and IP

Key Advantages

Instant-on and deterministic timing make it ideal for safety-critical control logic

Simple, fast design iteration compared to full FPGAs

Reliable non-volatile configuration, no external boot memory needed

Broad I/O count enables extensive system glue without extra devices

Proven ispMACH 4000B architecture with long field history and robust supply chain

Easy production programming and updates via JTAG, reducing rework and downtime

Lower power and simpler timing closure than many FPGA alternatives

Packaging

Type: 176-lead TQFP (also referenced as 176-LQFP), square body

Material: Molded plastic epoxy package with copper leadframe; matte-tin plated gull-wing leads; lead-free, RoHS options available

Size: Body 24 mm x 24 mm; height around 1.4 mm typical; overall footprint fits standard TQFP sockets

Lead pitch: Typically 0.5 mm for 176-TQFP (confirm exact pitch in datasheet)

Pin configuration: 176 total pins

- 128 user I/O pins

- Dedicated JTAG pins (TCK, TMS, TDI, TDO)

- Global clock and control pins

- Multiple VCCINT (core) and VCCIO (I/O bank) supply pins and grounds

Thermal characteristics: Junction temperature range 0°C to 90°C (commercial); typical thermal resistance depends on PCB and airflow; use thermal vias and solid ground planes for best results

Electrical properties:

- Core supply voltage: 2.3 V to 2.7 V (typical 2.5 V)

- Propagation delay tpd: up to 7.5 ns

- I/O voltage: banks typically support 3.3 V or 2.5 V (verify per bank)

- In-system programmable via JTAG; non-volatile configuration

Shipping: Tray packaging for assembly lines and automated pick-and-place

Lifecycle

Status: Active in production and widely deployed; considered a mature, stable family

Not currently flagged as nearing discontinuation based on latest available industry information

Equivalent or alternative models:

- Same family and density, different conditions or packages:

- LC4384B-75TN176I (industrial temp range version)

- LC4384B-100TN176C (slower speed grade, ~10 ns tpd)

- LC4384B variants in other packages (e.g., FBGA options) if your layout prefers BGA; confirm exact part codes

- Lattice newer families for new designs:

- MachXO2 (e.g., XO2-1200HC, XO2-2000HC) for low power, instant-on CPLD/FPGA-class devices

- MachXO3 (e.g., XO3LF-1300, XO3LF-2100) for higher integration and modern toolchains

- Cross-vendor functional alternatives (not pin-compatible; requalification required):

- Xilinx CoolRunner-II XC2C384 (similar macrocell class)

- Intel MAX V (e.g., 5M240, 5M570) for CPLD-like use cases

If you need exact drop-in or a vetted equivalency list for your PCB and timing, contact our sales team on the Y-IC website and we will match the best replacement or next-gen option for your project

Key Application Areas

System glue logic, bus bridging, and interface adaptation

State machines, sequencers, and control paths with tight timing

Power management and reset supervision with instant-on behavior

Sensor aggregation and pre-processing at the edge

Industrial control, motor drive enable logic, and safety interlocks

Consumer and embedded products requiring flexible I/O expansion

Communications backplane and line-card control, clock distribution gating

LED, keypad, and display scanning or multiplexing

Rapid prototyping of control logic to shorten time-to-market

Datasheet

Y-IC hosts the most authoritative datasheet and technical resources for LC4384B-75TN176C on our product page. We recommend downloading the datasheet here to verify pinouts, electrical limits, timing, and programming details.

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