LM4308SQ Texas Instruments Integrated Circuit (Other) In Stock

Name: LM4308SQ
Brand: Texas Instruments
SKU: LM4308SQ
Availability: InStock

The LM4308SQ is an 18-bit dot-matrix LCD driver IC from Texas Instruments designed for parallel-interface CPU-driven display applications. It supports multiplexed driving of LCD panels with 18 segment outputs and is housed in a 40-pin QFP package.

OBSOLETEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

LM4308SQOther

Quick Facts

Manufacturer: Texas Instruments
Package: Other
Pin Count: 40
Lifecycle: OBSOLETE
Datasheet: LM4308SQ Datasheet PDF
Category: Integrated Circuit
Temp Range: -40.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LM4308SQ?

18-segment dot-matrix LCD driver with multiplexed display capability for multi-character panels
Parallel CPU interface allows direct connection to 8-bit or 16-bit microcontroller data buses
40-pin QFP package provides sufficient I/O density for medium-complexity LCD panel connections
Multiplexed drive reduces required GPIO count, enabling larger displays from fewer microcontroller pins
On-chip display RAM and timing control reduce firmware complexity for real-time display refresh

What is LM4308SQ used for?

The LM4308SQ is suited for industrial panel meters, medical device displays, and consumer appliance interfaces requiring a dot-matrix LCD driven from a parallel microcontroller bus. Its 18-segment multiplexed output supports character or custom-symbol LCDs used in point-of-sale terminals, HVAC controllers, and measurement instruments. The direct parallel CPU interface simplifies firmware development on platforms such as 8051 or 8-bit PIC microcontrollers that natively support parallel memory-mapped peripherals.

What are the specifications of LM4308SQ?

YTEOL	0
Data Input Mode	PARALLEL
Display Mode	DOT MATRIX
Interface IC Type	LIQUID CRYSTAL DISPLAY DRIVER
JESD-30 Code	S-XQCC-N40
JESD-609 Code	e3
Multiplexed Display Capability	YES
Number of Functions	1
Number of Segments	18
Package Body Material	UNSPECIFIED
Package Shape	SQUARE
Package Style	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Supply Voltage-Max	2V
Supply Voltage-Min	1.6V
Supply Voltage-Nom	1.8V
Surface Mount	YES
Temperature Grade	INDUSTRIAL
Terminal Finish	Matte Tin (Sn)
Terminal Form	NO LEAD
Terminal Pitch	0.4mm
Terminal Position	QUAD
Time@Peak Reflow Temperature-Max (s)	40
Package	Other

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.60

Where can I find the LM4308SQ datasheet?

LM4308SQ Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for LM4308SQ?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

How many LCD segments can the LM4308SQ drive, and what display configurations does that support?

The LM4308SQ provides 18 segment outputs with multiplexed drive capability, supporting dot-matrix character LCDs with multiple rows. With a 1/4 or 1/8 multiplex ratio, 18 segment lines can address panels containing 72 to 144 individual pixel elements, sufficient for 2-line alphanumeric or custom icon displays.

What interface does the LM4308SQ use to communicate with a host microcontroller, and what bus width is required?

The LM4308SQ uses a parallel data input mode, compatible with 8-bit parallel buses typical of 8051, AVR, or PIC microcontrollers. The 40-pin QFP package accommodates all segment, common, and data bus lines while keeping the PCB footprint compact relative to the pin count.

In which product categories is the LM4308SQ commonly used as a display driver?

The LM4308SQ is deployed in industrial instrumentation panels, home appliance control boards, and medical monitoring equipment where a dot-matrix LCD must display alphanumeric data updated at rates up to several tens of Hz. Its on-chip multiplexing allows a microcontroller with as few as 8 data-bus pins to drive an 18-segment multi-row display.

What package does the LM4308SQ ship in, and how does that affect PCB design for a display driver circuit?

The LM4308SQ is in a 40-pin QFP (JESD-30 S-XQCC-N40) with a fine-pitch lead arrangement requiring standard SMD reflow placement. Designers should place 100 nF decoupling capacitors within 2 mm of each VDD pin and route LCD segment traces with matched lengths under 50 mm to maintain uniform contrast across all 18 segments.

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.

Aug 6, 2026

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.

Aug 6, 2026

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.

Aug 4, 2026

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.

Aug 4, 2026

Why Buy from FindMyChip

Authorized Source

Verified supply chain with full traceability & inspection

Competitive Pricing

Factory-direct from China distributors, low MOQ

Fast Shipping

DHL Express 3–5 days · FedEx/UPS 5–7 days worldwide

Quality Guaranteed

30-day replacement for defective parts, no questions asked

About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

View all Texas Instruments parts →

More from Texas Instruments

SN74HC138PWT

Small Outline Packages

Integrated Circuit

MCP6292IDGKT

Small Outline Packages

Integrated Circuit

CD4511BMN

Dual-In-Line Packages

Integrated Circuit

UCC2803DG4

Small Outline Packages

Integrated Circuit

MC33078DRE4

Small Outline Packages

Integrated Circuit

TLV6710DDCT

SOT23 (6-Pin)

Integrated Circuit

AvailabilityIn Stock

Reference Price (USD)

Contact for Price

Buy from 1pc · Factory-direct pricing

pcs

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”

Rajesh Patel

Procurement Manager, VoltEdge Energy, India

LM4308SQ Texas Instruments Integrated Circuit (Other) In Stock

What are the key features of LM4308SQ?

What is LM4308SQ used for?

What are the specifications of LM4308SQ?

Compliance & Regulatory

Where can I find the LM4308SQ datasheet?

What are equivalent replacements for LM4308SQ?

Frequently Asked Questions

How many LCD segments can the LM4308SQ drive, and what display configurations does that support?

What interface does the LM4308SQ use to communicate with a host microcontroller, and what bus width is required?

In which product categories is the LM4308SQ commonly used as a display driver?

What package does the LM4308SQ ship in, and how does that affect PCB design for a display driver circuit?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

You May Also Like